======================================
| [  951.775149][T20861]  #1: ff11000015338fd0 (k-sk_lock-AF_INET#2){+.+.}-{0:0}, at: __mptcp_retrans (net/mptcp/protocol.c:2763)
| [  951.775310][T20861]  #2: ff11000012560b60 (&msk->fallback_lock){+.-.}-{3:3}, at: __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [  951.775477][T20861]
| [  951.775477][T20861] stack backtrace:
[  951.775582][T20861] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  951.775583][T20861] Call Trace:
[  951.775585][T20861]  <TASK>
[  951.775587][T20861]  dump_stack_lvl (lib/dump_stack.c:122)
[  951.775592][T20861]  print_deadlock_bug.cold (kernel/locking/lockdep.c:3044)
[  951.775597][T20861]  validate_chain (kernel/locking/lockdep.c:3898)
[  951.775601][T20861]  __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[  951.775604][T20861]  lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  951.775606][T20861]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[  951.775608][T20861]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
[  951.775610][T20861]  ? lock_acquire (kernel/locking/lockdep.c:5833)
[  951.775611][T20861]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[  951.775614][T20861]  _raw_spin_lock_bh (./include/linux/spinlock_api_smp.h:127 kernel/locking/spinlock.c:178)
[  951.775616][T20861]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[  951.775618][T20861]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[  951.775621][T20861]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[  951.775624][T20861]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[  951.775625][T20861]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[  951.775628][T20861]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[  951.775631][T20861]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[  951.775633][T20861]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  951.775635][T20861]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[  951.775637][T20861]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[  951.775639][T20861]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[  951.775644][T20861]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[  951.775646][T20861]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  951.775648][T20861]  ? release_sock (net/core/sock.c:3794)
[  951.775650][T20861]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[  951.775652][T20861]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[  951.775655][T20861]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[  951.775658][T20861]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[  951.775661][T20861]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[  951.775664][T20861]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[  951.775667][T20861]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  951.775669][T20861]  ? ovl_llseek (fs/overlayfs/file.c:346)
[  951.775671][T20861]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[  951.775673][T20861]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[  951.775675][T20861]  ? ____sys_recvmsg (net/socket.c:1176)
[  951.775678][T20861]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[  951.775680][T20861]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[  951.775682][T20861]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[  951.775684][T20861]  ? ____sys_recvmsg (net/socket.c:1176)
[  951.775686][T20861]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[  951.775688][T20861]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[  951.775689][T20861]  ? new_sync_read (fs/read_write.c:584)
[  951.775691][T20861]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  951.775693][T20861]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  951.775694][T20861]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[  951.775697][T20861]  vfs_write (fs/read_write.c:686)
[  951.775699][T20861]  ksys_write (fs/read_write.c:739)
[  951.775701][T20861]  ? __ia32_sys_read (fs/read_write.c:728)
[  951.775703][T20861]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  951.775706][T20861]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[  951.775708][T20861]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  951.775710][T20861] RIP: 0033:0x7f814975fc5e
[  951.775713][T20861] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[  951.775715][T20861] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  951.775718][T20861] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[  951.775719][T20861] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[  951.775720][T20861] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[  951.775721][T20861] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[  951.775722][T20861] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [  976.394769][    C2] hardirqs last  enabled at (21232): _raw_spin_unlock_irqrestore (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 ./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
| [  976.394779][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [  976.394781][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [  976.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[  976.394794][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  976.394795][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[  976.394799][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[  976.394800][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[  976.394803][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[  976.394804][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[  976.394805][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[  976.394806][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[  976.394807][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[  976.394809][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[  976.394813][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  976.394814][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[  976.394814][    C2] PKRU: 55555554
[  976.394815][    C2] Call Trace:
[  976.394819][    C2]  <TASK>
[  976.394823][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[  976.394828][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[  976.394831][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[  976.394835][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[  976.394839][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[  976.394841][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[  976.394843][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[  976.394846][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[  976.394849][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[  976.394851][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[  976.394853][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[  976.394856][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[  976.394858][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  976.394860][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[  976.394862][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[  976.394865][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[  976.394869][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[  976.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  976.394873][    C2]  ? release_sock (net/core/sock.c:3794)
[  976.394876][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[  976.394878][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[  976.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[  976.394884][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[  976.394886][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[  976.394890][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[  976.394893][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  976.394895][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[  976.394897][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[  976.394899][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[  976.394901][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[  976.394904][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[  976.394905][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[  976.394908][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[  976.394909][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[  976.394911][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[  976.394914][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[  976.394915][    C2]  ? new_sync_read (fs/read_write.c:584)
[  976.394917][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  976.394918][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  976.394920][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[  976.394922][    C2]  vfs_write (fs/read_write.c:686)
[  976.394925][    C2]  ksys_write (fs/read_write.c:739)
[  976.394927][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[  976.394929][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  976.394931][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[  976.394934][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  976.394937][    C2] RIP: 0033:0x7f814975fc5e
[  976.394942][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[  976.394943][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  976.394945][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[  976.394946][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[  976.394946][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[  976.394947][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[  976.394948][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [  977.773627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [  977.773871][    C2] rcu: 2-....: (25990 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=5995
| [  977.774155][    C2] rcu: (t=26001 jiffies g=521497 q=5294 ncpus=4)
| [  977.774312][    C2] Tainted: [L]=SOFTLOCKUP
[  977.774314][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  977.774316][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[  977.774325][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[  977.774327][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[  977.774330][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[  977.774332][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[  977.774333][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[  977.774333][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[  977.774334][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[  977.774337][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[  977.774340][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  977.774341][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[  977.774342][    C2] PKRU: 55555554
[  977.774342][    C2] Call Trace:
[  977.774343][    C2]  <TASK>
[  977.774344][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[  977.774349][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[  977.774351][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[  977.774356][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[  977.774359][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[  977.774361][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[  977.774364][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[  977.774366][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[  977.774369][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[  977.774371][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[  977.774374][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[  977.774376][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[  977.774378][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  977.774380][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[  977.774382][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[  977.774384][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[  977.774389][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[  977.774391][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  977.774393][    C2]  ? release_sock (net/core/sock.c:3794)
[  977.774395][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[  977.774397][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[  977.774400][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[  977.774403][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[  977.774405][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[  977.774409][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[  977.774411][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  977.774413][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[  977.774415][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[  977.774418][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[  977.774419][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[  977.774422][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[  977.774423][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[  977.774426][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[  977.774428][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[  977.774429][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[  977.774431][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[  977.774433][    C2]  ? new_sync_read (fs/read_write.c:584)
[  977.774434][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  977.774436][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  977.774437][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[  977.774440][    C2]  vfs_write (fs/read_write.c:686)
[  977.774442][    C2]  ksys_write (fs/read_write.c:739)
[  977.774444][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[  977.774445][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  977.774448][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[  977.774450][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  977.774452][    C2] RIP: 0033:0x7f814975fc5e
[  977.774456][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[  977.774457][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  977.774459][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[  977.774460][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[  977.774461][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[  977.774462][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[  977.774463][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1004.394781][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1004.394782][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1004.394786][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1004.394796][    C2] Tainted: [L]=SOFTLOCKUP
[ 1004.394797][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1004.394800][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1004.394804][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1004.394805][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1004.394808][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1004.394809][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1004.394810][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1004.394811][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1004.394812][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1004.394814][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1004.394818][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1004.394819][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1004.394820][    C2] PKRU: 55555554
[ 1004.394821][    C2] Call Trace:
[ 1004.394824][    C2]  <TASK>
[ 1004.394828][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1004.394833][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1004.394836][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1004.394840][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1004.394844][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1004.394846][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1004.394848][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1004.394851][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1004.394854][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1004.394856][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1004.394858][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1004.394861][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1004.394863][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1004.394865][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1004.394867][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1004.394870][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1004.394874][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1004.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1004.394878][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1004.394881][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1004.394883][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1004.394886][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1004.394890][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1004.394892][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1004.394895][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1004.394898][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1004.394900][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1004.394902][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1004.394905][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1004.394907][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1004.394909][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1004.394911][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1004.394913][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1004.394915][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1004.394917][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1004.394919][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1004.394921][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1004.394923][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1004.394924][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1004.394926][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1004.394928][    C2]  vfs_write (fs/read_write.c:686)
[ 1004.394931][    C2]  ksys_write (fs/read_write.c:739)
[ 1004.394933][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1004.394935][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1004.394937][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1004.394940][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1004.394944][    C2] RIP: 0033:0x7f814975fc5e
[ 1004.394949][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1004.394950][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1004.394951][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1004.394952][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1004.394953][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1004.394954][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1004.394955][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1017.168963][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1017.169103][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1017.169251][    C2] NMI backtrace for cpu 2
| [ 1017.169268][    C2] Tainted: [L]=SOFTLOCKUP
[ 1017.169269][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1017.169272][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 1017.169280][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 1017.169282][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 1017.169285][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 1017.169286][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 1017.169287][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 1017.169288][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 1017.169289][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 1017.169292][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1017.169296][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1017.169297][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1017.169298][    C2] PKRU: 55555554
[ 1017.169299][    C2] Call Trace:
[ 1017.169302][    C2]  <IRQ>
[ 1017.169307][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 1017.169309][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 1017.169314][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 1017.169316][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 1017.169319][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1017.169322][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1017.169326][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1017.169330][    C2]  </IRQ>
[ 1017.169331][    C2]  <TASK>
[ 1017.169332][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1017.169335][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1017.169338][    C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:141 mm/kasan/generic.c:172 mm/kasan/generic.c:191 mm/kasan/generic.c:200)
[ 1017.169342][    C2] Code: 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff 48 39 c7 0f 82 d1 00 00 00 4c 8d 4c 37 ff 48 89 f9 4c 8d 74 37 ff <48> b8 00 00 00 00 00 fc ff df 49 c1 e9 03 48 c1 e9 03 4e 8d 54 08
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	00 ff                	add    %bh,%bh
   8:	eb 0a                	jmp    0x14
   a:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  11:	80 ff ff 
  14:	48 39 c7             	cmp    %rax,%rdi
  17:	0f 82 d1 00 00 00    	jb     0xee
  1d:	4c 8d 4c 37 ff       	lea    -0x1(%rdi,%rsi,1),%r9
  22:	48 89 f9             	mov    %rdi,%rcx
  25:	4c 8d 74 37 ff       	lea    -0x1(%rdi,%rsi,1),%r14
  2a:*	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax		<-- trapping instruction
  31:	fc ff df 
  34:	49 c1 e9 03          	shr    $0x3,%r9
  38:	48 c1 e9 03          	shr    $0x3,%rcx
  3c:	4e                   	rex.WRX
  3d:	8d                   	.byte 0x8d
  3e:	54                   	push   %rsp
  3f:	08                   	.byte 0x8

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	49 c1 e9 03          	shr    $0x3,%r9
   e:	48 c1 e9 03          	shr    $0x3,%rcx
  12:	4e                   	rex.WRX
  13:	8d                   	.byte 0x8d
  14:	54                   	push   %rsp
  15:	08                   	.byte 0x8
[ 1017.169343][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000206
[ 1017.169344][    C2] RAX: ff00000000000000 RBX: ff11000012560b48 RCX: ff11000012560b48
[ 1017.169345][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1017.169345][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ff11000012560b4b
[ 1017.169346][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1017.169347][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 1017.169348][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1017.169353][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1017.169355][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1017.169358][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1017.169360][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1017.169364][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1017.169367][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1017.169369][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1017.169372][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1017.169375][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1017.169378][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1017.169380][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1017.169382][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1017.169385][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1017.169387][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1017.169389][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1017.169391][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1017.169394][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1017.169398][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1017.169400][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1017.169402][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1017.169404][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1017.169406][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1017.169409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1017.169413][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1017.169414][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1017.169418][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1017.169420][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1017.169422][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1017.169424][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1017.169427][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1017.169429][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1017.169431][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1017.169433][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1017.169435][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1017.169437][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1017.169438][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1017.169441][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1017.169442][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1017.169444][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1017.169446][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1017.169447][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1017.169450][    C2]  vfs_write (fs/read_write.c:686)
[ 1017.169452][    C2]  ksys_write (fs/read_write.c:739)
[ 1017.169454][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1017.169456][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1017.169458][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1017.169460][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1017.169462][    C2] RIP: 0033:0x7f814975fc5e
[ 1017.169467][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1017.169468][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1017.169469][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1017.169470][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1017.169471][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1017.169472][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1017.169472][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1044.394779][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1044.394780][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1044.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1044.394794][    C2] Tainted: [L]=SOFTLOCKUP
[ 1044.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1044.394797][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1044.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1044.394802][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1044.394804][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1044.394806][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1044.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1044.394807][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1044.394808][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1044.394811][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1044.394814][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1044.394815][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1044.394816][    C2] PKRU: 55555554
[ 1044.394817][    C2] Call Trace:
[ 1044.394821][    C2]  <TASK>
[ 1044.394825][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1044.394830][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1044.394832][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1044.394837][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1044.394840][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1044.394842][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1044.394845][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1044.394847][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1044.394851][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1044.394852][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1044.394855][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1044.394858][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1044.394860][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1044.394862][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1044.394864][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1044.394866][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1044.394871][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1044.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1044.394874][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1044.394877][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1044.394879][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1044.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1044.394886][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1044.394888][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1044.394891][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1044.394894][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1044.394896][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1044.394898][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1044.394901][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1044.394902][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1044.394905][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1044.394907][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1044.394909][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1044.394911][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1044.394913][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1044.394919][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1044.394921][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1044.394923][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1044.394924][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1044.394926][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1044.394928][    C2]  vfs_write (fs/read_write.c:686)
[ 1044.394931][    C2]  ksys_write (fs/read_write.c:739)
[ 1044.394933][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1044.394934][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1044.394937][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1044.394940][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1044.394943][    C2] RIP: 0033:0x7f814975fc5e
[ 1044.394948][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1044.394949][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1044.394951][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1044.394952][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1044.394953][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1044.394953][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1044.394954][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1055.776628][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1055.776889][    C2] rcu: 2-....: (103958 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=24334
| [ 1055.777171][    C2] rcu: (t=104004 jiffies g=521497 q=7705 ncpus=4)
| [ 1055.777306][    C2] Tainted: [L]=SOFTLOCKUP
[ 1055.777307][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1055.777309][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1055.777319][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1055.777321][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1055.777324][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1055.777325][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1055.777326][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1055.777327][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1055.777328][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1055.777330][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1055.777333][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1055.777334][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1055.777335][    C2] PKRU: 55555554
[ 1055.777336][    C2] Call Trace:
[ 1055.777337][    C2]  <TASK>
[ 1055.777338][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1055.777343][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1055.777346][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1055.777350][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1055.777353][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1055.777355][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1055.777358][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1055.777361][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1055.777364][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1055.777365][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1055.777368][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1055.777370][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1055.777373][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1055.777375][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1055.777377][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1055.777379][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1055.777383][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1055.777385][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1055.777387][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1055.777390][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1055.777391][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1055.777394][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1055.777398][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1055.777399][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1055.777403][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1055.777406][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1055.777407][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1055.777409][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1055.777412][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1055.777414][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1055.777416][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1055.777418][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1055.777420][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1055.777422][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1055.777424][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1055.777426][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1055.777427][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1055.777429][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1055.777431][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1055.777432][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1055.777434][    C2]  vfs_write (fs/read_write.c:686)
[ 1055.777437][    C2]  ksys_write (fs/read_write.c:739)
[ 1055.777438][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1055.777440][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1055.777443][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1055.777445][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1055.777447][    C2] RIP: 0033:0x7f814975fc5e
[ 1055.777451][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1055.777452][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1055.777454][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1055.777455][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1055.777456][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1055.777456][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1055.777457][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1080.394778][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1080.394780][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1080.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1080.394794][    C2] Tainted: [L]=SOFTLOCKUP
[ 1080.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1080.394797][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1080.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1080.394803][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1080.394805][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1080.394806][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1080.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1080.394808][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1080.394809][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1080.394811][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1080.394815][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1080.394816][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1080.394817][    C2] PKRU: 55555554
[ 1080.394818][    C2] Call Trace:
[ 1080.394822][    C2]  <TASK>
[ 1080.394825][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1080.394830][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1080.394833][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1080.394837][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1080.394841][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1080.394843][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1080.394845][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1080.394848][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1080.394851][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1080.394853][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1080.394855][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1080.394858][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1080.394861][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1080.394862][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1080.394864][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1080.394867][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1080.394871][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1080.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1080.394876][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1080.394878][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1080.394880][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1080.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1080.394887][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1080.394889][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1080.394893][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1080.394895][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1080.394897][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1080.394899][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1080.394902][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1080.394904][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1080.394907][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1080.394908][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1080.394911][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1080.394912][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1080.394914][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1080.394916][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1080.394918][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1080.394920][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1080.394921][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1080.394923][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1080.394925][    C2]  vfs_write (fs/read_write.c:686)
[ 1080.394928][    C2]  ksys_write (fs/read_write.c:739)
[ 1080.394930][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1080.394932][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1080.394934][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1080.394937][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1080.394941][    C2] RIP: 0033:0x7f814975fc5e
[ 1080.394944][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1080.394945][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1080.394947][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1080.394948][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1080.394949][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1080.394950][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1080.394950][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1108.394778][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1108.394780][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1108.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1108.394794][    C2] Tainted: [L]=SOFTLOCKUP
[ 1108.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1108.394798][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1108.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1108.394803][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1108.394805][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1108.394806][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1108.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1108.394808][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1108.394809][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1108.394811][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1108.394815][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1108.394816][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1108.394817][    C2] PKRU: 55555554
[ 1108.394818][    C2] Call Trace:
[ 1108.394822][    C2]  <TASK>
[ 1108.394826][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1108.394831][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1108.394833][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1108.394837][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1108.394841][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1108.394843][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1108.394846][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1108.394848][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1108.394852][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1108.394853][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1108.394856][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1108.394859][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1108.394861][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1108.394863][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1108.394865][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1108.394867][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1108.394872][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1108.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1108.394876][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1108.394878][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1108.394880][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1108.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1108.394887][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1108.394889][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1108.394892][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1108.394895][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1108.394897][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1108.394899][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1108.394902][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1108.394904][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1108.394906][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1108.394908][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1108.394910][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1108.394912][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1108.394914][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1108.394916][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1108.394918][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1108.394920][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1108.394921][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1108.394923][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1108.394925][    C2]  vfs_write (fs/read_write.c:686)
[ 1108.394928][    C2]  ksys_write (fs/read_write.c:739)
[ 1108.394930][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1108.394932][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1108.394934][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1108.394937][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1108.394940][    C2] RIP: 0033:0x7f814975fc5e
[ 1108.394945][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1108.394946][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1108.394948][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1108.394949][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1108.394949][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1108.394950][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1108.394951][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1115.471987][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1115.472104][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1115.472281][    C2] NMI backtrace for cpu 2
| [ 1115.472300][    C2] Tainted: [L]=SOFTLOCKUP
[ 1115.472301][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1115.472303][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 1115.472312][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 1115.472314][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 1115.472317][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 1115.472319][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 1115.472320][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 1115.472320][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 1115.472321][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 1115.472324][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1115.472328][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1115.472330][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1115.472331][    C2] PKRU: 55555554
[ 1115.472332][    C2] Call Trace:
[ 1115.472337][    C2]  <IRQ>
[ 1115.472349][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 1115.472352][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 1115.472357][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 1115.472359][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 1115.472362][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1115.472366][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1115.472369][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1115.472374][    C2]  </IRQ>
[ 1115.472375][    C2]  <TASK>
[ 1115.472376][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1115.472379][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1115.472383][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1115.472384][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1115.472385][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1115.472386][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1115.472387][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1115.472388][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1115.472388][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1115.472390][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1115.472393][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1115.472396][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1115.472398][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1115.472403][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1115.472407][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1115.472409][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1115.472414][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1115.472417][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1115.472420][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1115.472422][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1115.472424][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1115.472427][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1115.472429][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1115.472431][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1115.472433][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1115.472435][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1115.472439][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1115.472441][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1115.472443][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1115.472446][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1115.472448][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1115.472451][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1115.472455][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1115.472457][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1115.472462][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1115.472466][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1115.472467][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1115.472469][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1115.472472][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1115.472474][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1115.472476][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1115.472478][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1115.472480][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1115.472482][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1115.472484][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1115.472486][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1115.472488][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1115.472490][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1115.472491][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1115.472493][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1115.472495][    C2]  vfs_write (fs/read_write.c:686)
[ 1115.472497][    C2]  ksys_write (fs/read_write.c:739)
[ 1115.472499][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1115.472501][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1115.472503][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1115.472506][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1115.472508][    C2] RIP: 0033:0x7f814975fc5e
[ 1115.472512][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1115.472513][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1115.472515][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1115.472517][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1115.472518][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1115.472519][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1115.472521][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1133.780627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1133.780865][    C2] rcu: 2-....: (181927 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=42244
| [ 1133.781108][    C2] rcu: (t=182008 jiffies g=521497 q=9354 ncpus=4)
| [ 1133.781223][    C2] Tainted: [L]=SOFTLOCKUP
[ 1133.781224][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1133.781227][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:201)
[ 1133.781236][    C2] Code: 48 39 c1 74 20 80 38 00 74 f2 b9 01 00 00 00 48 85 c0 74 2e 48 39 c3 75 19 45 89 f2 41 83 e2 07 44 3a 13 7d 0d b9 01 00 00 00 <5b> 41 5e 89 c8 41 5f c3 4c 89 c1 0f b6 d2 e8 df e9 ff ff 83 f0 01
All code
========
   0:	48 39 c1             	cmp    %rax,%rcx
   3:	74 20                	je     0x25
   5:	80 38 00             	cmpb   $0x0,(%rax)
   8:	74 f2                	je     0xfffffffffffffffc
   a:	b9 01 00 00 00       	mov    $0x1,%ecx
   f:	48 85 c0             	test   %rax,%rax
  12:	74 2e                	je     0x42
  14:	48 39 c3             	cmp    %rax,%rbx
  17:	75 19                	jne    0x32
  19:	45 89 f2             	mov    %r14d,%r10d
  1c:	41 83 e2 07          	and    $0x7,%r10d
  20:	44 3a 13             	cmp    (%rbx),%r10b
  23:	7d 0d                	jge    0x32
  25:	b9 01 00 00 00       	mov    $0x1,%ecx
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	41 5e                	pop    %r14
  2d:	89 c8                	mov    %ecx,%eax
  2f:	41 5f                	pop    %r15
  31:	c3                   	ret
  32:	4c 89 c1             	mov    %r8,%rcx
  35:	0f b6 d2             	movzbl %dl,%edx
  38:	e8 df e9 ff ff       	call   0xffffffffffffea1c
  3d:	83 f0 01             	xor    $0x1,%eax

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	41 5e                	pop    %r14
   3:	89 c8                	mov    %ecx,%eax
   5:	41 5f                	pop    %r15
   7:	c3                   	ret
   8:	4c 89 c1             	mov    %r8,%rcx
   b:	0f b6 d2             	movzbl %dl,%edx
   e:	e8 df e9 ff ff       	call   0xffffffffffffe9f2
  13:	83 f0 01             	xor    $0x1,%eax
[ 1133.781238][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000246
[ 1133.781241][    C2] RAX: ffe21c00024ac16a RBX: ffe21c00024ac169 RCX: 0000000000000001
[ 1133.781243][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1133.781244][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1133.781244][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1133.781245][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 1133.781248][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1133.781251][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1133.781252][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1133.781253][    C2] PKRU: 55555554
[ 1133.781254][    C2] Call Trace:
[ 1133.781255][    C2]  <TASK>
[ 1133.781256][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1133.781261][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1133.781265][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1133.781268][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1133.781272][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1133.781275][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1133.781277][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1133.781281][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1133.781283][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1133.781286][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1133.781288][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1133.781290][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1133.781292][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1133.781295][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1133.781296][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1133.781298][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1133.781301][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1133.781305][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1133.781307][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1133.781309][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1133.781311][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1133.781313][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1133.781316][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1133.781319][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1133.781321][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1133.781325][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1133.781327][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1133.781328][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1133.781331][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1133.781333][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1133.781335][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1133.781337][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1133.781339][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1133.781341][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1133.781343][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1133.781345][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1133.781346][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1133.781348][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1133.781350][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1133.781351][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1133.781353][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1133.781355][    C2]  vfs_write (fs/read_write.c:686)
[ 1133.781357][    C2]  ksys_write (fs/read_write.c:739)
[ 1133.781359][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1133.781361][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1133.781363][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1133.781365][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1133.781368][    C2] RIP: 0033:0x7f814975fc5e
[ 1133.781372][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1133.781373][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1133.781374][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1133.781375][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1133.781376][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1133.781377][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1133.781378][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1160.394779][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1160.394781][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1160.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1160.394794][    C2] Tainted: [L]=SOFTLOCKUP
[ 1160.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1160.394798][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1160.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1160.394803][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1160.394805][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1160.394806][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1160.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1160.394808][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1160.394809][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1160.394811][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1160.394814][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1160.394815][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1160.394816][    C2] PKRU: 55555554
[ 1160.394817][    C2] Call Trace:
[ 1160.394821][    C2]  <TASK>
[ 1160.394825][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1160.394830][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1160.394832][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1160.394836][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1160.394840][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1160.394842][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1160.394844][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1160.394847][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1160.394850][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1160.394852][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1160.394854][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1160.394857][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1160.394860][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1160.394861][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1160.394863][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1160.394866][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1160.394870][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1160.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1160.394874][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1160.394876][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1160.394879][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1160.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1160.394886][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1160.394887][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1160.394891][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1160.394894][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1160.394896][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1160.394898][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1160.394901][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1160.394902][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1160.394905][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1160.394906][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1160.394909][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1160.394911][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1160.394912][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1160.394915][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1160.394916][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1160.394918][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1160.394920][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1160.394921][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1160.394923][    C2]  vfs_write (fs/read_write.c:686)
[ 1160.394926][    C2]  ksys_write (fs/read_write.c:739)
[ 1160.394928][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1160.394930][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1160.394932][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1160.394935][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1160.394939][    C2] RIP: 0033:0x7f814975fc5e
[ 1160.394944][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1160.394945][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1160.394947][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1160.394948][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1160.394948][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1160.394949][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1160.394950][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1188.394778][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1188.394783][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1188.394787][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1188.394797][    C2] Tainted: [L]=SOFTLOCKUP
[ 1188.394798][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1188.394800][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1188.394804][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1188.394806][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1188.394808][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1188.394809][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1188.394810][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1188.394811][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1188.394812][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1188.394814][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1188.394818][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1188.394819][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1188.394820][    C2] PKRU: 55555554
[ 1188.394821][    C2] Call Trace:
[ 1188.394825][    C2]  <TASK>
[ 1188.394828][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1188.394834][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1188.394836][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1188.394841][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1188.394845][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1188.394847][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1188.394849][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1188.394852][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1188.394855][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1188.394857][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1188.394859][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1188.394862][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1188.394864][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1188.394866][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1188.394868][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1188.394870][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1188.394875][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1188.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1188.394879][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1188.394881][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1188.394883][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1188.394886][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1188.394890][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1188.394892][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1188.394895][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1188.394898][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1188.394900][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1188.394902][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1188.394905][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1188.394907][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1188.394909][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1188.394911][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1188.394913][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1188.394915][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1188.394916][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1188.394919][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1188.394920][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1188.394922][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1188.394924][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1188.394925][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1188.394928][    C2]  vfs_write (fs/read_write.c:686)
[ 1188.394930][    C2]  ksys_write (fs/read_write.c:739)
[ 1188.394932][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1188.394934][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1188.394936][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1188.394939][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1188.394943][    C2] RIP: 0033:0x7f814975fc5e
[ 1188.394946][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1188.394947][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1188.394949][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1188.394950][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1188.394951][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1188.394952][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1188.394952][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1211.784627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1211.784919][    C2] rcu: 2-....: (259909 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=60089
| [ 1211.785132][    C2] rcu: (t=260012 jiffies g=521497 q=10531 ncpus=4)
| [ 1211.785257][    C2] Tainted: [L]=SOFTLOCKUP
[ 1211.785258][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1211.785261][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:201)
[ 1211.785270][    C2] Code: 48 39 c1 74 20 80 38 00 74 f2 b9 01 00 00 00 48 85 c0 74 2e 48 39 c3 75 19 45 89 f2 41 83 e2 07 44 3a 13 7d 0d b9 01 00 00 00 <5b> 41 5e 89 c8 41 5f c3 4c 89 c1 0f b6 d2 e8 df e9 ff ff 83 f0 01
All code
========
   0:	48 39 c1             	cmp    %rax,%rcx
   3:	74 20                	je     0x25
   5:	80 38 00             	cmpb   $0x0,(%rax)
   8:	74 f2                	je     0xfffffffffffffffc
   a:	b9 01 00 00 00       	mov    $0x1,%ecx
   f:	48 85 c0             	test   %rax,%rax
  12:	74 2e                	je     0x42
  14:	48 39 c3             	cmp    %rax,%rbx
  17:	75 19                	jne    0x32
  19:	45 89 f2             	mov    %r14d,%r10d
  1c:	41 83 e2 07          	and    $0x7,%r10d
  20:	44 3a 13             	cmp    (%rbx),%r10b
  23:	7d 0d                	jge    0x32
  25:	b9 01 00 00 00       	mov    $0x1,%ecx
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	41 5e                	pop    %r14
  2d:	89 c8                	mov    %ecx,%eax
  2f:	41 5f                	pop    %r15
  31:	c3                   	ret
  32:	4c 89 c1             	mov    %r8,%rcx
  35:	0f b6 d2             	movzbl %dl,%edx
  38:	e8 df e9 ff ff       	call   0xffffffffffffea1c
  3d:	83 f0 01             	xor    $0x1,%eax

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	41 5e                	pop    %r14
   3:	89 c8                	mov    %ecx,%eax
   5:	41 5f                	pop    %r15
   7:	c3                   	ret
   8:	4c 89 c1             	mov    %r8,%rcx
   b:	0f b6 d2             	movzbl %dl,%edx
   e:	e8 df e9 ff ff       	call   0xffffffffffffe9f2
  13:	83 f0 01             	xor    $0x1,%eax
[ 1211.785272][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000246
[ 1211.785275][    C2] RAX: ffe21c00024ac16a RBX: ffe21c00024ac169 RCX: 0000000000000001
[ 1211.785277][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1211.785278][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1211.785279][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1211.785279][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 1211.785282][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1211.785286][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1211.785287][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1211.785288][    C2] PKRU: 55555554
[ 1211.785289][    C2] Call Trace:
[ 1211.785290][    C2]  <TASK>
[ 1211.785291][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1211.785296][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1211.785300][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1211.785303][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1211.785306][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1211.785310][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1211.785311][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1211.785315][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1211.785317][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1211.785320][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1211.785322][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1211.785324][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1211.785327][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1211.785329][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1211.785331][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1211.785333][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1211.785335][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1211.785339][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1211.785341][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1211.785344][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1211.785346][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1211.785347][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1211.785350][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1211.785354][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1211.785356][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1211.785359][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1211.785362][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1211.785363][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1211.785365][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1211.785368][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1211.785370][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1211.785372][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1211.785374][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1211.785376][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1211.785378][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1211.785379][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1211.785381][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1211.785383][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1211.785384][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1211.785386][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1211.785388][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1211.785390][    C2]  vfs_write (fs/read_write.c:686)
[ 1211.785392][    C2]  ksys_write (fs/read_write.c:739)
[ 1211.785394][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1211.785396][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1211.785398][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1211.785400][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1211.785402][    C2] RIP: 0033:0x7f814975fc5e
[ 1211.785407][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1211.785408][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1211.785409][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1211.785410][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1211.785411][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1211.785411][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1211.785412][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1213.775995][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1213.776166][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1213.776292][    C2] NMI backtrace for cpu 2
| [ 1213.776309][    C2] Tainted: [L]=SOFTLOCKUP
[ 1213.776310][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1213.776312][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 1213.776322][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 1213.776323][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 1213.776327][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 1213.776328][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 1213.776329][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 1213.776330][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 1213.776331][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 1213.776334][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1213.776337][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1213.776338][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1213.776339][    C2] PKRU: 55555554
[ 1213.776340][    C2] Call Trace:
[ 1213.776343][    C2]  <IRQ>
[ 1213.776345][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 1213.776350][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 1213.776355][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1213.776359][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1213.776362][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1213.776366][    C2]  </IRQ>
[ 1213.776367][    C2]  <TASK>
[ 1213.776368][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1213.776371][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1213.776374][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1213.776375][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1213.776376][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1213.776377][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1213.776377][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1213.776378][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1213.776379][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1213.776380][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1213.776383][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1213.776386][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1213.776388][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1213.776391][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1213.776395][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1213.776396][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1213.776400][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1213.776403][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1213.776406][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1213.776407][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1213.776410][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1213.776413][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1213.776415][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1213.776416][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1213.776418][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1213.776421][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1213.776425][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1213.776427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1213.776429][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1213.776431][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1213.776433][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1213.776437][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1213.776440][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1213.776442][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1213.776446][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1213.776448][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1213.776450][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1213.776452][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1213.776455][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1213.776457][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1213.776459][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1213.776461][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1213.776463][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1213.776465][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1213.776466][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1213.776469][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1213.776470][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1213.776472][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1213.776474][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1213.776475][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1213.776478][    C2]  vfs_write (fs/read_write.c:686)
[ 1213.776480][    C2]  ksys_write (fs/read_write.c:739)
[ 1213.776482][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1213.776484][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1213.776486][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1213.776488][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1213.776490][    C2] RIP: 0033:0x7f814975fc5e
[ 1213.776494][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1213.776495][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1213.776497][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1213.776497][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1213.776498][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1213.776499][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1213.776500][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1240.394777][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1240.394779][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1240.394783][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1240.394793][    C2] Tainted: [L]=SOFTLOCKUP
[ 1240.394794][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1240.394796][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1240.394800][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1240.394802][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1240.394804][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1240.394805][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1240.394806][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1240.394807][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1240.394807][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1240.394810][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1240.394814][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1240.394815][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1240.394816][    C2] PKRU: 55555554
[ 1240.394816][    C2] Call Trace:
[ 1240.394820][    C2]  <TASK>
[ 1240.394824][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1240.394829][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1240.394831][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1240.394836][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1240.394840][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1240.394842][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1240.394844][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1240.394847][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1240.394850][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1240.394852][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1240.394854][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1240.394857][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1240.394860][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1240.394861][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1240.394864][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1240.394866][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1240.394871][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1240.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1240.394875][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1240.394877][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1240.394880][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1240.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1240.394886][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1240.394888][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1240.394892][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1240.394895][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1240.394896][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1240.394899][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1240.394902][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1240.394903][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1240.394906][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1240.394908][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1240.394910][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1240.394912][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1240.394914][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1240.394916][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1240.394918][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1240.394920][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1240.394921][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1240.394923][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1240.394925][    C2]  vfs_write (fs/read_write.c:686)
[ 1240.394927][    C2]  ksys_write (fs/read_write.c:739)
[ 1240.394929][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1240.394931][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1240.394933][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1240.394936][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1240.394940][    C2] RIP: 0033:0x7f814975fc5e
[ 1240.394943][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1240.394944][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1240.394946][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1240.394947][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1240.394948][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1240.394948][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1240.394949][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1268.394775][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1268.394777][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1268.394780][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1268.394790][    C2] Tainted: [L]=SOFTLOCKUP
[ 1268.394791][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1268.394793][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1268.394797][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1268.394798][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1268.394800][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1268.394802][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1268.394802][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1268.394803][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1268.394804][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1268.394807][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1268.394810][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1268.394811][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1268.394812][    C2] PKRU: 55555554
[ 1268.394813][    C2] Call Trace:
[ 1268.394816][    C2]  <TASK>
[ 1268.394820][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1268.394825][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1268.394827][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1268.394831][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1268.394835][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1268.394837][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1268.394839][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1268.394842][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1268.394845][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1268.394847][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1268.394849][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1268.394852][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1268.394854][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1268.394856][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1268.394858][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1268.394860][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1268.394865][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1268.394867][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1268.394869][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1268.394871][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1268.394873][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1268.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1268.394879][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1268.394881][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1268.394885][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1268.394888][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1268.394889][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1268.394891][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1268.394894][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1268.394896][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1268.394898][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1268.394900][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1268.394903][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1268.394904][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1268.394906][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1268.394909][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1268.394910][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1268.394912][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1268.394914][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1268.394915][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1268.394918][    C2]  vfs_write (fs/read_write.c:686)
[ 1268.394920][    C2]  ksys_write (fs/read_write.c:739)
[ 1268.394922][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1268.394924][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1268.394926][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1268.394929][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1268.394932][    C2] RIP: 0033:0x7f814975fc5e
[ 1268.394935][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1268.394936][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1268.394938][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1268.394939][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1268.394940][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1268.394940][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1268.394941][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1289.788628][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1289.788915][    C2] rcu: 2-....: (337880 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=78405
| [ 1289.789106][    C2] rcu: (t=338016 jiffies g=521497 q=12120 ncpus=4)
| [ 1289.789239][    C2] Tainted: [L]=SOFTLOCKUP
[ 1289.789240][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1289.789242][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1289.789251][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1289.789253][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1289.789256][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1289.789257][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1289.789259][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1289.789259][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1289.789260][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1289.789262][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1289.789266][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1289.789267][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1289.789268][    C2] PKRU: 55555554
[ 1289.789269][    C2] Call Trace:
[ 1289.789269][    C2]  <TASK>
[ 1289.789271][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1289.789275][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1289.789278][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1289.789282][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1289.789285][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1289.789287][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1289.789290][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1289.789292][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1289.789295][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1289.789297][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1289.789299][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1289.789302][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1289.789304][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1289.789306][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1289.789308][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1289.789310][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1289.789314][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1289.789316][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1289.789318][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1289.789321][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1289.789322][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1289.789325][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1289.789328][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1289.789330][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1289.789334][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1289.789337][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1289.789339][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1289.789341][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1289.789343][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1289.789345][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1289.789348][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1289.789349][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1289.789352][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1289.789353][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1289.789355][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1289.789357][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1289.789358][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1289.789360][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1289.789362][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1289.789363][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1289.789366][    C2]  vfs_write (fs/read_write.c:686)
[ 1289.789368][    C2]  ksys_write (fs/read_write.c:739)
[ 1289.789369][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1289.789371][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1289.789374][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1289.789376][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1289.789378][    C2] RIP: 0033:0x7f814975fc5e
[ 1289.789382][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1289.789383][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1289.789385][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1289.789386][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1289.789387][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1289.789387][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1289.789388][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1312.080963][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1312.081139][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1312.081249][    C2] NMI backtrace for cpu 2
| [ 1312.081268][    C2] Tainted: [L]=SOFTLOCKUP
[ 1312.081269][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1312.081271][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 1312.081280][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 1312.081282][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 1312.081285][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 1312.081287][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 1312.081288][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 1312.081288][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 1312.081289][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 1312.081292][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1312.081296][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1312.081297][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1312.081298][    C2] PKRU: 55555554
[ 1312.081299][    C2] Call Trace:
[ 1312.081303][    C2]  <IRQ>
[ 1312.081307][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 1312.081309][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 1312.081315][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 1312.081316][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 1312.081319][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1312.081323][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1312.081326][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1312.081331][    C2]  </IRQ>
[ 1312.081331][    C2]  <TASK>
[ 1312.081332][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1312.081336][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1312.081339][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1312.081340][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1312.081341][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1312.081342][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1312.081343][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1312.081344][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1312.081344][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1312.081346][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1312.081349][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1312.081352][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1312.081354][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1312.081357][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1312.081361][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1312.081363][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1312.081366][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1312.081369][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1312.081372][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1312.081374][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1312.081376][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1312.081379][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1312.081381][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1312.081383][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1312.081385][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1312.081387][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1312.081392][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1312.081393][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1312.081396][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1312.081398][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1312.081400][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1312.081404][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1312.081407][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1312.081409][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1312.081412][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1312.081415][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1312.081417][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1312.081419][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1312.081422][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1312.081424][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1312.081426][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1312.081428][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1312.081430][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1312.081432][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1312.081434][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1312.081436][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1312.081438][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1312.081439][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1312.081441][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1312.081443][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1312.081445][    C2]  vfs_write (fs/read_write.c:686)
[ 1312.081447][    C2]  ksys_write (fs/read_write.c:739)
[ 1312.081449][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1312.081451][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1312.081454][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1312.081456][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1312.081457][    C2] RIP: 0033:0x7f814975fc5e
[ 1312.081462][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1312.081463][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1312.081464][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1312.081465][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1312.081466][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1312.081466][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1312.081467][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1336.394778][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1336.394780][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1336.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1336.394793][    C2] Tainted: [L]=SOFTLOCKUP
[ 1336.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1336.394797][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1336.394800][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1336.394802][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1336.394804][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1336.394806][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1336.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1336.394807][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1336.394808][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1336.394811][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1336.394814][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1336.394815][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1336.394816][    C2] PKRU: 55555554
[ 1336.394816][    C2] Call Trace:
[ 1336.394820][    C2]  <TASK>
[ 1336.394824][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1336.394829][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1336.394831][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1336.394836][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1336.394839][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1336.394841][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1336.394844][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1336.394846][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1336.394849][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1336.394851][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1336.394853][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1336.394856][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1336.394858][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1336.394860][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1336.394862][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1336.394865][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1336.394869][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1336.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1336.394873][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1336.394875][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1336.394877][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1336.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1336.394884][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1336.394886][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1336.394890][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1336.394892][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1336.394894][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1336.394896][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1336.394899][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1336.394901][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1336.394903][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1336.394905][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1336.394907][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1336.394909][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1336.394911][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1336.394914][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1336.394915][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1336.394917][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1336.394918][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1336.394920][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1336.394922][    C2]  vfs_write (fs/read_write.c:686)
[ 1336.394925][    C2]  ksys_write (fs/read_write.c:739)
[ 1336.394927][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1336.394928][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1336.394931][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1336.394933][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1336.394937][    C2] RIP: 0033:0x7f814975fc5e
[ 1336.394941][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1336.394943][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1336.394946][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1336.394947][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1336.394948][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1336.394949][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1336.394951][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1364.394783][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1364.394785][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1364.394788][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1364.394798][    C2] Tainted: [L]=SOFTLOCKUP
[ 1364.394799][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1364.394801][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1364.394805][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1364.394806][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1364.394809][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1364.394810][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1364.394811][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1364.394812][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1364.394813][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1364.394815][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1364.394818][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1364.394819][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1364.394820][    C2] PKRU: 55555554
[ 1364.394821][    C2] Call Trace:
[ 1364.394825][    C2]  <TASK>
[ 1364.394829][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1364.394834][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1364.394836][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1364.394841][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1364.394845][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1364.394846][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1364.394849][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1364.394851][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1364.394855][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1364.394856][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1364.394859][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1364.394862][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1364.394864][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1364.394866][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1364.394868][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1364.394870][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1364.394875][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1364.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1364.394879][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1364.394881][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1364.394883][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1364.394887][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1364.394890][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1364.394892][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1364.394895][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1364.394898][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1364.394900][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1364.394902][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1364.394905][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1364.394907][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1364.394909][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1364.394911][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1364.394913][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1364.394915][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1364.394917][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1364.394919][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1364.394921][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1364.394923][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1364.394924][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1364.394926][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1364.394928][    C2]  vfs_write (fs/read_write.c:686)
[ 1364.394930][    C2]  ksys_write (fs/read_write.c:739)
[ 1364.394932][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1364.394934][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1364.394937][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1364.394940][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1364.394943][    C2] RIP: 0033:0x7f814975fc5e
[ 1364.394948][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1364.394949][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1364.394951][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1364.394952][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1364.394953][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1364.394953][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1364.394954][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1367.792626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1367.792852][    C2] rcu: 2-....: (415850 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=96746
| [ 1367.793046][    C2] rcu: (t=416020 jiffies g=521497 q=13711 ncpus=4)
| [ 1367.793243][    C2] Tainted: [L]=SOFTLOCKUP
[ 1367.793244][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1367.793247][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1367.793256][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1367.793258][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1367.793262][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1367.793264][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1367.793265][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1367.793265][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1367.793266][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1367.793269][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1367.793274][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1367.793275][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1367.793277][    C2] PKRU: 55555554
[ 1367.793278][    C2] Call Trace:
[ 1367.793279][    C2]  <TASK>
[ 1367.793281][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1367.793286][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1367.793288][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1367.793292][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1367.793295][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1367.793297][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1367.793301][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1367.793303][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1367.793306][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1367.793308][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1367.793310][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1367.793313][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1367.793315][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1367.793317][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1367.793319][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1367.793321][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1367.793325][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1367.793327][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1367.793329][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1367.793331][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1367.793333][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1367.793336][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1367.793340][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1367.793341][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1367.793345][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1367.793348][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1367.793349][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1367.793352][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1367.793354][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1367.793356][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1367.793358][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1367.793360][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1367.793362][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1367.793364][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1367.793366][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1367.793368][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1367.793369][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1367.793371][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1367.793372][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1367.793374][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1367.793376][    C2]  vfs_write (fs/read_write.c:686)
[ 1367.793379][    C2]  ksys_write (fs/read_write.c:739)
[ 1367.793380][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1367.793382][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1367.793384][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1367.793387][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1367.793390][    C2] RIP: 0033:0x7f814975fc5e
[ 1367.793396][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1367.793397][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1367.793400][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1367.793401][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1367.793402][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1367.793403][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1367.793403][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1392.394777][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1392.394779][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1392.394782][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1392.394792][    C2] Tainted: [L]=SOFTLOCKUP
[ 1392.394793][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1392.394796][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1392.394799][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1392.394801][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1392.394803][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1392.394804][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1392.394805][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1392.394806][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1392.394807][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1392.394809][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1392.394813][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1392.394814][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1392.394815][    C2] PKRU: 55555554
[ 1392.394815][    C2] Call Trace:
[ 1392.394818][    C2]  <TASK>
[ 1392.394822][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1392.394827][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1392.394829][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1392.394833][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1392.394837][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1392.394838][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1392.394841][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1392.394844][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1392.394847][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1392.394848][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1392.394851][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1392.394854][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1392.394856][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1392.394858][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1392.394860][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1392.394862][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1392.394866][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1392.394868][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1392.394870][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1392.394872][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1392.394874][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1392.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1392.394881][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1392.394883][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1392.394886][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1392.394889][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1392.394891][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1392.394893][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1392.394896][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1392.394898][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1392.394900][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1392.394902][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1392.394904][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1392.394906][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1392.394907][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1392.394910][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1392.394912][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1392.394913][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1392.394915][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1392.394917][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1392.394919][    C2]  vfs_write (fs/read_write.c:686)
[ 1392.394921][    C2]  ksys_write (fs/read_write.c:739)
[ 1392.394923][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1392.394925][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1392.394927][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1392.394930][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1392.394933][    C2] RIP: 0033:0x7f814975fc5e
[ 1392.394937][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1392.394939][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1392.394940][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1392.394941][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1392.394942][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1392.394943][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1392.394944][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1410.385134][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1410.385262][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1410.385373][    C2] NMI backtrace for cpu 2
| [ 1410.385392][    C2] Tainted: [L]=SOFTLOCKUP
[ 1410.385393][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1410.385395][    C2] RIP: 0010:native_apic_msr_read (./arch/x86/include/asm/msr.h:75 ./arch/x86/include/asm/msr.h:108 ./arch/x86/include/asm/apic.h:227)
[ 1410.385404][    C2] Code: 08 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 ff ff ff ff 81 ff e0 00 00 00 74 15 c1 ef 04 8d 8f 00 08 00 00 0f 32 <48> c1 e2 20 48 09 d0 66 90 c3 c3 48 83 ec 08 48 89 c6 31 d2 89 cf
All code
========
   0:	08 00                	or     %al,(%rax)
   2:	00 66 66             	add    %ah,0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	f3 0f 1e fa          	endbr64
  12:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  17:	81 ff e0 00 00 00    	cmp    $0xe0,%edi
  1d:	74 15                	je     0x34
  1f:	c1 ef 04             	shr    $0x4,%edi
  22:	8d 8f 00 08 00 00    	lea    0x800(%rdi),%ecx
  28:	0f 32                	rdmsr
  2a:*	48 c1 e2 20          	shl    $0x20,%rdx		<-- trapping instruction
  2e:	48 09 d0             	or     %rdx,%rax
  31:	66 90                	xchg   %ax,%ax
  33:	c3                   	ret
  34:	c3                   	ret
  35:	48 83 ec 08          	sub    $0x8,%rsp
  39:	48 89 c6             	mov    %rax,%rsi
  3c:	31 d2                	xor    %edx,%edx
  3e:	89 cf                	mov    %ecx,%edi

Code starting with the faulting instruction
===========================================
   0:	48 c1 e2 20          	shl    $0x20,%rdx
   4:	48 09 d0             	or     %rdx,%rax
   7:	66 90                	xchg   %ax,%ax
   9:	c3                   	ret
   a:	c3                   	ret
   b:	48 83 ec 08          	sub    $0x8,%rsp
   f:	48 89 c6             	mov    %rax,%rsi
  12:	31 d2                	xor    %edx,%edx
  14:	89 cf                	mov    %ecx,%edi
[ 1410.385406][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000012
[ 1410.385409][    C2] RAX: 0000000000000001 RBX: ff11000002980428 RCX: 0000000000000819
[ 1410.385411][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000019
[ 1410.385412][    C2] RBP: ff11000002980438 R08: ffffffffaa2da398 R09: fff3fc00000431df
[ 1410.385413][    C2] R10: 0000000000000003 R11: 1fe2200006a6666a R12: ff110000027b3040
[ 1410.385413][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 1410.385416][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1410.385419][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1410.385420][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1410.385421][    C2] PKRU: 55555554
[ 1410.385422][    C2] Call Trace:
[ 1410.385426][    C2]  <IRQ>
[ 1410.385427][    C2]  ioapic_ack_level (./arch/x86/include/asm/apic.h:404 arch/x86/kernel/apic/io_apic.c:1700)
[ 1410.385433][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 1410.385438][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1410.385441][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1410.385444][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1410.385448][    C2]  </IRQ>
[ 1410.385449][    C2]  <TASK>
[ 1410.385450][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1410.385453][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1410.385457][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1410.385458][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1410.385459][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1410.385460][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1410.385460][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1410.385461][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1410.385462][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1410.385463][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1410.385466][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1410.385469][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1410.385472][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1410.385475][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1410.385478][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1410.385480][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1410.385484][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1410.385486][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1410.385489][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1410.385491][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1410.385493][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1410.385496][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1410.385498][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1410.385500][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1410.385502][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1410.385505][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1410.385509][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1410.385511][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1410.385513][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1410.385515][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1410.385518][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1410.385521][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1410.385524][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1410.385526][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1410.385530][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1410.385533][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1410.385534][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1410.385537][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1410.385540][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1410.385541][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1410.385544][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1410.385545][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1410.385548][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1410.385550][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1410.385551][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1410.385554][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1410.385555][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1410.385557][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1410.385559][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1410.385560][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1410.385562][    C2]  vfs_write (fs/read_write.c:686)
[ 1410.385565][    C2]  ksys_write (fs/read_write.c:739)
[ 1410.385567][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1410.385569][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1410.385571][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1410.385573][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1410.385575][    C2] RIP: 0033:0x7f814975fc5e
[ 1410.385579][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1410.385579][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1410.385581][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1410.385582][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1410.385583][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1410.385583][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1410.385584][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1436.394776][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1436.394778][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1436.394781][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1436.394791][    C2] Tainted: [L]=SOFTLOCKUP
[ 1436.394792][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1436.394794][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1436.394798][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1436.394799][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1436.394802][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1436.394803][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1436.394804][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1436.394805][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1436.394805][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1436.394808][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1436.394811][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1436.394812][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1436.394813][    C2] PKRU: 55555554
[ 1436.394814][    C2] Call Trace:
[ 1436.394818][    C2]  <TASK>
[ 1436.394822][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1436.394827][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1436.394829][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1436.394833][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1436.394837][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1436.394839][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1436.394841][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1436.394844][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1436.394847][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1436.394849][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1436.394851][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1436.394854][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1436.394856][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1436.394858][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1436.394860][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1436.394862][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1436.394867][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1436.394868][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1436.394870][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1436.394873][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1436.394875][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1436.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1436.394881][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1436.394883][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1436.394887][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1436.394889][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1436.394891][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1436.394893][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1436.394896][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1436.394898][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1436.394900][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1436.394902][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1436.394904][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1436.394906][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1436.394907][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1436.394910][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1436.394912][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1436.394914][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1436.394915][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1436.394917][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1436.394919][    C2]  vfs_write (fs/read_write.c:686)
[ 1436.394922][    C2]  ksys_write (fs/read_write.c:739)
[ 1436.394923][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1436.394925][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1436.394928][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1436.394930][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1436.394934][    C2] RIP: 0033:0x7f814975fc5e
[ 1436.394938][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1436.394939][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1436.394941][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1436.394942][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1436.394943][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1436.394943][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1436.394944][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1445.796627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1445.796871][    C2] rcu: 2-....: (493821 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=114484
| [ 1445.797070][    C2] rcu: (t=494024 jiffies g=521497 q=15313 ncpus=4)
| [ 1445.797246][    C2] Tainted: [L]=SOFTLOCKUP
[ 1445.797248][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1445.797250][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1445.797259][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1445.797261][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1445.797264][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1445.797265][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1445.797266][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1445.797267][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1445.797268][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1445.797270][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1445.797274][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1445.797275][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1445.797276][    C2] PKRU: 55555554
[ 1445.797276][    C2] Call Trace:
[ 1445.797277][    C2]  <TASK>
[ 1445.797278][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1445.797283][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1445.797286][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1445.797290][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1445.797293][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1445.797294][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1445.797298][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1445.797300][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1445.797303][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1445.797305][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1445.797307][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1445.797310][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1445.797312][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1445.797313][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1445.797316][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1445.797318][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1445.797322][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1445.797324][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1445.797326][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1445.797328][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1445.797330][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1445.797333][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1445.797336][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1445.797338][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1445.797341][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1445.797344][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1445.797346][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1445.797348][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1445.797350][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1445.797352][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1445.797354][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1445.797356][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1445.797358][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1445.797360][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1445.797361][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1445.797363][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1445.797365][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1445.797367][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1445.797368][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1445.797370][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1445.797372][    C2]  vfs_write (fs/read_write.c:686)
[ 1445.797374][    C2]  ksys_write (fs/read_write.c:739)
[ 1445.797376][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1445.797378][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1445.797380][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1445.797383][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1445.797385][    C2] RIP: 0033:0x7f814975fc5e
[ 1445.797389][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1445.797390][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1445.797392][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1445.797393][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1445.797394][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1445.797394][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1445.797395][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1472.394778][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1472.394780][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1472.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1472.394793][    C2] Tainted: [L]=SOFTLOCKUP
[ 1472.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1472.394797][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1472.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1472.394802][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1472.394804][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1472.394806][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1472.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1472.394808][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1472.394808][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1472.394811][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1472.394814][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1472.394815][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1472.394816][    C2] PKRU: 55555554
[ 1472.394817][    C2] Call Trace:
[ 1472.394821][    C2]  <TASK>
[ 1472.394825][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1472.394830][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1472.394832][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1472.394836][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1472.394840][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1472.394842][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1472.394844][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1472.394847][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1472.394850][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1472.394852][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1472.394854][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1472.394857][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1472.394859][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1472.394861][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1472.394863][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1472.394865][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1472.394870][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1472.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1472.394874][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1472.394876][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1472.394878][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1472.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1472.394885][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1472.394887][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1472.394891][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1472.394894][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1472.394895][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1472.394898][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1472.394900][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1472.394902][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1472.394905][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1472.394906][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1472.394909][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1472.394910][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1472.394912][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1472.394915][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1472.394916][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1472.394918][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1472.394919][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1472.394921][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1472.394923][    C2]  vfs_write (fs/read_write.c:686)
[ 1472.394926][    C2]  ksys_write (fs/read_write.c:739)
[ 1472.394928][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1472.394929][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1472.394932][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1472.394934][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1472.394942][    C2] RIP: 0033:0x7f814975fc5e
[ 1472.394946][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1472.394947][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1472.394949][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1472.394950][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1472.394951][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1472.394951][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1472.394952][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1500.394777][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1500.394779][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1500.394783][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1500.394793][    C2] Tainted: [L]=SOFTLOCKUP
[ 1500.394794][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1500.394797][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1500.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1500.394802][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1500.394804][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1500.394805][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1500.394806][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1500.394807][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1500.394808][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1500.394810][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1500.394813][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1500.394814][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1500.394815][    C2] PKRU: 55555554
[ 1500.394816][    C2] Call Trace:
[ 1500.394820][    C2]  <TASK>
[ 1500.394823][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1500.394828][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1500.394830][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1500.394834][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1500.394838][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1500.394840][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1500.394842][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1500.394845][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1500.394848][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1500.394850][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1500.394852][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1500.394855][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1500.394857][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1500.394859][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1500.394861][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1500.394863][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1500.394868][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1500.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1500.394872][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1500.394874][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1500.394876][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1500.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1500.394883][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1500.394884][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1500.394888][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1500.394891][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1500.394893][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1500.394895][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1500.394898][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1500.394899][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1500.394902][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1500.394904][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1500.394906][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1500.394908][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1500.394909][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1500.394912][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1500.394914][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1500.394916][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1500.394917][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1500.394918][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1500.394921][    C2]  vfs_write (fs/read_write.c:686)
[ 1500.394923][    C2]  ksys_write (fs/read_write.c:739)
[ 1500.394925][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1500.394927][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1500.394929][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1500.394932][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1500.394936][    C2] RIP: 0033:0x7f814975fc5e
[ 1500.394940][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1500.394941][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1500.394943][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1500.394945][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1500.394946][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1500.394947][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1500.394948][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1508.688025][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1508.688144][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1508.688254][    C2] NMI backtrace for cpu 2
| [ 1508.688272][    C2] Tainted: [L]=SOFTLOCKUP
[ 1508.688274][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1508.688276][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 1508.688285][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 1508.688287][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 1508.688290][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 1508.688291][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 1508.688292][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 1508.688293][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 1508.688294][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 1508.688298][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1508.688301][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1508.688302][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1508.688303][    C2] PKRU: 55555554
[ 1508.688304][    C2] Call Trace:
[ 1508.688308][    C2]  <IRQ>
[ 1508.688309][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 1508.688315][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 1508.688320][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1508.688323][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1508.688326][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1508.688331][    C2]  </IRQ>
[ 1508.688331][    C2]  <TASK>
[ 1508.688332][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1508.688336][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1508.688339][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1508.688340][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1508.688341][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1508.688342][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1508.688343][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1508.688344][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1508.688344][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1508.688346][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1508.688349][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1508.688352][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1508.688354][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1508.688357][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1508.688361][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1508.688362][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1508.688366][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1508.688368][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1508.688372][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1508.688373][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1508.688376][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1508.688378][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1508.688381][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1508.688382][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1508.688384][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1508.688387][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1508.688391][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1508.688393][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1508.688395][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1508.688397][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1508.688399][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1508.688402][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1508.688406][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1508.688408][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1508.688411][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1508.688414][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1508.688415][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1508.688418][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1508.688421][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1508.688422][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1508.688425][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1508.688426][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1508.688429][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1508.688431][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1508.688432][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1508.688435][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1508.688436][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1508.688438][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1508.688440][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1508.688441][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1508.688443][    C2]  vfs_write (fs/read_write.c:686)
[ 1508.688446][    C2]  ksys_write (fs/read_write.c:739)
[ 1508.688448][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1508.688449][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1508.688452][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1508.688454][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1508.688456][    C2] RIP: 0033:0x7f814975fc5e
[ 1508.688459][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1508.688460][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1508.688462][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1508.688462][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1508.688463][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1508.688464][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1508.688464][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1523.800626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1523.800958][    C2] rcu: 2-....: (571792 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=132916
| [ 1523.801190][    C2] rcu: (t=572028 jiffies g=521497 q=16899 ncpus=4)
| [ 1523.801342][    C2] Tainted: [L]=SOFTLOCKUP
[ 1523.801344][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1523.801345][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1523.801355][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1523.801357][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1523.801360][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1523.801361][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1523.801362][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1523.801363][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1523.801364][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1523.801366][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1523.801370][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1523.801371][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1523.801372][    C2] PKRU: 55555554
[ 1523.801372][    C2] Call Trace:
[ 1523.801373][    C2]  <TASK>
[ 1523.801374][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1523.801380][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1523.801382][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1523.801386][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1523.801389][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1523.801391][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1523.801394][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1523.801396][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1523.801399][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1523.801401][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1523.801403][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1523.801406][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1523.801408][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1523.801410][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1523.801412][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1523.801414][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1523.801418][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1523.801420][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1523.801422][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1523.801424][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1523.801426][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1523.801429][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1523.801432][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1523.801434][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1523.801437][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1523.801440][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1523.801442][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1523.801444][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1523.801446][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1523.801448][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1523.801450][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1523.801452][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1523.801454][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1523.801456][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1523.801458][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1523.801460][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1523.801461][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1523.801463][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1523.801464][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1523.801466][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1523.801468][    C2]  vfs_write (fs/read_write.c:686)
[ 1523.801470][    C2]  ksys_write (fs/read_write.c:739)
[ 1523.801472][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1523.801473][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1523.801476][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1523.801478][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1523.801480][    C2] RIP: 0033:0x7f814975fc5e
[ 1523.801484][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1523.801485][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1523.801487][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1523.801488][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1523.801489][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1523.801489][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1523.801490][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1548.394781][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1548.394783][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1548.394786][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1548.394796][    C2] Tainted: [L]=SOFTLOCKUP
[ 1548.394797][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1548.394799][    C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30)
[ 1548.394805][    C2] Code: 8b 05 34 f0 b4 03 49 8b 40 20 48 39 c7 72 0f 48 05 00 80 00 00 48 39 c7 0f 82 0c 0f 22 ff 90 0f 0b 90 c3 0f 1f 80 00 00 00 00 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 8f f5 ff ff 0f 1f 40 00 66
All code
========
   0:	8b 05 34 f0 b4 03    	mov    0x3b4f034(%rip),%eax        # 0x3b4f03a
   6:	49 8b 40 20          	mov    0x20(%r8),%rax
   a:	48 39 c7             	cmp    %rax,%rdi
   d:	72 0f                	jb     0x1e
   f:	48 05 00 80 00 00    	add    $0x8000,%rax
  15:	48 39 c7             	cmp    %rax,%rdi
  18:	0f 82 0c 0f 22 ff    	jb     0xffffffffff220f2a
  1e:	90                   	nop
  1f:	0f 0b                	ud2
  21:	90                   	nop
  22:	c3                   	ret
  23:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5ca
  3b:	0f 1f 40 00          	nopl   0x0(%rax)
  3f:	66                   	data16

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5a0
  11:	0f 1f 40 00          	nopl   0x0(%rax)
  15:	66                   	data16
[ 1548.394807][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 1548.394809][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1548.394810][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1548.394811][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1548.394812][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1548.394813][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1548.394815][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1548.394818][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1548.394819][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1548.394820][    C2] PKRU: 55555554
[ 1548.394821][    C2] Call Trace:
[ 1548.394825][    C2]  <TASK>
[ 1548.394826][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1548.394832][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1548.394836][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1548.394838][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1548.394842][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1548.394846][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1548.394848][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1548.394851][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1548.394853][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1548.394856][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1548.394858][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1548.394860][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1548.394863][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1548.394865][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1548.394867][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1548.394869][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1548.394872][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1548.394876][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1548.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1548.394880][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1548.394882][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1548.394884][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1548.394887][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1548.394891][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1548.394893][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1548.394896][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1548.394898][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1548.394900][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1548.394902][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1548.394905][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1548.394906][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1548.394909][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1548.394910][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1548.394913][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1548.394915][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1548.394916][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1548.394919][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1548.394920][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1548.394922][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1548.394923][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1548.394925][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1548.394927][    C2]  vfs_write (fs/read_write.c:686)
[ 1548.394930][    C2]  ksys_write (fs/read_write.c:739)
[ 1548.394932][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1548.394933][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1548.394936][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1548.394939][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1548.394942][    C2] RIP: 0033:0x7f814975fc5e
[ 1548.394947][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1548.394948][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1548.394950][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1548.394951][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1548.394951][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1548.394952][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1548.394953][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1576.394779][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1576.394781][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1576.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1576.394795][    C2] Tainted: [L]=SOFTLOCKUP
[ 1576.394796][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1576.394798][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1576.394802][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1576.394804][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1576.394806][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1576.394807][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1576.394808][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1576.394809][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1576.394809][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1576.394812][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1576.394815][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1576.394816][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1576.394817][    C2] PKRU: 55555554
[ 1576.394818][    C2] Call Trace:
[ 1576.394822][    C2]  <TASK>
[ 1576.394825][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1576.394830][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1576.394832][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1576.394836][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1576.394840][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1576.394841][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1576.394844][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1576.394846][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1576.394850][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1576.394852][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1576.394854][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1576.394857][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1576.394859][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1576.394861][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1576.394863][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1576.394866][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1576.394870][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1576.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1576.394874][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1576.394876][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1576.394878][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1576.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1576.394885][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1576.394887][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1576.394890][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1576.394893][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1576.394894][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1576.394897][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1576.394900][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1576.394901][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1576.394904][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1576.394906][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1576.394908][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1576.394910][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1576.394916][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1576.394919][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1576.394920][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1576.394922][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1576.394924][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1576.394925][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1576.394928][    C2]  vfs_write (fs/read_write.c:686)
[ 1576.394930][    C2]  ksys_write (fs/read_write.c:739)
[ 1576.394932][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1576.394934][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1576.394936][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1576.394939][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1576.394942][    C2] RIP: 0033:0x7f814975fc5e
[ 1576.394947][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1576.394948][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1576.394950][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1576.394951][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1576.394952][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1576.394952][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1576.394953][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1601.803627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1601.803863][    C2] rcu: 2-....: (649772 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=151578
| [ 1601.804063][    C2] rcu: (t=650031 jiffies g=521497 q=18042 ncpus=4)
| [ 1601.804247][    C2] Tainted: [L]=SOFTLOCKUP
[ 1601.804249][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1601.804250][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1601.804260][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1601.804262][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1601.804265][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1601.804266][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1601.804267][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1601.804268][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1601.804269][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1601.804271][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1601.804274][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1601.804275][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1601.804276][    C2] PKRU: 55555554
[ 1601.804277][    C2] Call Trace:
[ 1601.804278][    C2]  <TASK>
[ 1601.804279][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1601.804284][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1601.804286][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1601.804290][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1601.804293][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1601.804295][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1601.804298][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1601.804300][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1601.804303][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1601.804305][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1601.804307][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1601.804310][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1601.804312][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1601.804314][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1601.804316][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1601.804318][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1601.804322][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1601.804324][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1601.804326][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1601.804328][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1601.804330][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1601.804333][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1601.804336][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1601.804338][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1601.804342][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1601.804344][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1601.804346][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1601.804348][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1601.804350][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1601.804352][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1601.804354][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1601.804356][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1601.804359][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1601.804360][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1601.804362][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1601.804364][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1601.804365][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1601.804367][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1601.804368][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1601.804370][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1601.804372][    C2]  vfs_write (fs/read_write.c:686)
[ 1601.804374][    C2]  ksys_write (fs/read_write.c:739)
[ 1601.804376][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1601.804378][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1601.804380][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1601.804382][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1601.804385][    C2] RIP: 0033:0x7f814975fc5e
[ 1601.804389][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1601.804390][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1601.804392][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1601.804393][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1601.804393][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1601.804394][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1601.804395][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1606.991990][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1606.992107][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1606.992216][    C2] NMI backtrace for cpu 2
| [ 1606.992234][    C2] Tainted: [L]=SOFTLOCKUP
[ 1606.992235][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1606.992237][    C2] RIP: 0010:native_apic_msr_read (./arch/x86/include/asm/msr.h:75 ./arch/x86/include/asm/msr.h:108 ./arch/x86/include/asm/apic.h:227)
[ 1606.992246][    C2] Code: 08 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 ff ff ff ff 81 ff e0 00 00 00 74 15 c1 ef 04 8d 8f 00 08 00 00 0f 32 <48> c1 e2 20 48 09 d0 66 90 c3 c3 48 83 ec 08 48 89 c6 31 d2 89 cf
All code
========
   0:	08 00                	or     %al,(%rax)
   2:	00 66 66             	add    %ah,0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	f3 0f 1e fa          	endbr64
  12:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  17:	81 ff e0 00 00 00    	cmp    $0xe0,%edi
  1d:	74 15                	je     0x34
  1f:	c1 ef 04             	shr    $0x4,%edi
  22:	8d 8f 00 08 00 00    	lea    0x800(%rdi),%ecx
  28:	0f 32                	rdmsr
  2a:*	48 c1 e2 20          	shl    $0x20,%rdx		<-- trapping instruction
  2e:	48 09 d0             	or     %rdx,%rax
  31:	66 90                	xchg   %ax,%ax
  33:	c3                   	ret
  34:	c3                   	ret
  35:	48 83 ec 08          	sub    $0x8,%rsp
  39:	48 89 c6             	mov    %rax,%rsi
  3c:	31 d2                	xor    %edx,%edx
  3e:	89 cf                	mov    %ecx,%edi

Code starting with the faulting instruction
===========================================
   0:	48 c1 e2 20          	shl    $0x20,%rdx
   4:	48 09 d0             	or     %rdx,%rax
   7:	66 90                	xchg   %ax,%ax
   9:	c3                   	ret
   a:	c3                   	ret
   b:	48 83 ec 08          	sub    $0x8,%rsp
   f:	48 89 c6             	mov    %rax,%rsi
  12:	31 d2                	xor    %edx,%edx
  14:	89 cf                	mov    %ecx,%edi
[ 1606.992248][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000012
[ 1606.992252][    C2] RAX: 0000000000000001 RBX: ff11000002980428 RCX: 0000000000000819
[ 1606.992253][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000019
[ 1606.992254][    C2] RBP: ff11000002980438 R08: ffffffffaa2da398 R09: fff3fc00000431df
[ 1606.992255][    C2] R10: 0000000000000003 R11: 1fe2200006a6666a R12: ff110000027b3040
[ 1606.992256][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 1606.992259][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1606.992262][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1606.992263][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1606.992263][    C2] PKRU: 55555554
[ 1606.992264][    C2] Call Trace:
[ 1606.992268][    C2]  <IRQ>
[ 1606.992269][    C2]  ioapic_ack_level (./arch/x86/include/asm/apic.h:404 arch/x86/kernel/apic/io_apic.c:1700)
[ 1606.992275][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 1606.992280][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1606.992283][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1606.992286][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1606.992290][    C2]  </IRQ>
[ 1606.992291][    C2]  <TASK>
[ 1606.992292][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1606.992295][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1606.992299][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1606.992300][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1606.992301][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1606.992302][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1606.992302][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1606.992303][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1606.992304][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1606.992305][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1606.992308][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1606.992312][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1606.992314][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1606.992317][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1606.992321][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1606.992322][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1606.992326][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1606.992329][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1606.992332][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1606.992334][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1606.992336][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1606.992339][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1606.992341][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1606.992343][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1606.992345][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1606.992347][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1606.992351][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1606.992353][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1606.992355][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1606.992357][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1606.992360][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1606.992363][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1606.992366][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1606.992368][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1606.992371][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1606.992374][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1606.992376][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1606.992378][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1606.992381][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1606.992382][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1606.992385][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1606.992386][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1606.992389][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1606.992390][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1606.992392][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1606.992395][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1606.992396][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1606.992398][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1606.992399][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1606.992401][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1606.992403][    C2]  vfs_write (fs/read_write.c:686)
[ 1606.992406][    C2]  ksys_write (fs/read_write.c:739)
[ 1606.992407][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1606.992409][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1606.992412][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1606.992414][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1606.992415][    C2] RIP: 0033:0x7f814975fc5e
[ 1606.992419][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1606.992420][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1606.992422][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1606.992423][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1606.992424][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1606.992424][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1606.992425][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1632.394772][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1632.394774][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1632.394776][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1632.394784][    C2] Tainted: [L]=SOFTLOCKUP
[ 1632.394785][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1632.394786][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1632.394789][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1632.394791][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1632.394793][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1632.394794][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1632.394795][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1632.394796][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1632.394796][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1632.394799][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1632.394802][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1632.394803][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1632.394804][    C2] PKRU: 55555554
[ 1632.394805][    C2] Call Trace:
[ 1632.394808][    C2]  <TASK>
[ 1632.394811][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1632.394815][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1632.394817][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1632.394820][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1632.394823][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1632.394825][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1632.394827][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1632.394830][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1632.394833][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1632.394835][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1632.394837][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1632.394840][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1632.394842][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1632.394843][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1632.394845][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1632.394847][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1632.394851][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1632.394853][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1632.394855][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1632.394857][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1632.394858][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1632.394862][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1632.394864][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1632.394866][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1632.394868][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1632.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1632.394872][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1632.394874][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1632.394876][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1632.394877][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1632.394880][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1632.394881][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1632.394883][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1632.394885][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1632.394886][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1632.394889][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1632.394890][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1632.394892][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1632.394893][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1632.394895][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1632.394897][    C2]  vfs_write (fs/read_write.c:686)
[ 1632.394899][    C2]  ksys_write (fs/read_write.c:739)
[ 1632.394901][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1632.394903][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1632.394905][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1632.394907][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1632.394910][    C2] RIP: 0033:0x7f814975fc5e
[ 1632.394912][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1632.394913][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1632.394915][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1632.394916][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1632.394916][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1632.394917][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1632.394918][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1660.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1660.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1660.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1660.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 1660.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1660.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1660.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1660.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1660.394774][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1660.394775][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1660.394776][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1660.394777][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1660.394778][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1660.394780][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1660.394783][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1660.394783][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1660.394784][    C2] PKRU: 55555554
[ 1660.394785][    C2] Call Trace:
[ 1660.394788][    C2]  <TASK>
[ 1660.394791][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1660.394793][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1660.394795][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1660.394798][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1660.394800][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1660.394802][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1660.394804][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1660.394807][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1660.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1660.394811][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1660.394814][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1660.394816][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1660.394818][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1660.394820][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1660.394822][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1660.394824][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1660.394827][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1660.394828][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1660.394830][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1660.394832][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1660.394834][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1660.394837][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1660.394839][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1660.394841][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1660.394843][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1660.394845][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1660.394846][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1660.394848][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1660.394850][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1660.394851][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1660.394853][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1660.394855][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1660.394856][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1660.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1660.394860][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1660.394861][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1660.394863][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1660.394865][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1660.394866][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1660.394867][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1660.394870][    C2]  vfs_write (fs/read_write.c:686)
[ 1660.394872][    C2]  ksys_write (fs/read_write.c:739)
[ 1660.394874][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1660.394875][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1660.394877][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1660.394879][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1660.394881][    C2] RIP: 0033:0x7f814975fc5e
[ 1660.394884][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1660.394885][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1660.394886][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1660.394887][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1660.394887][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1660.394888][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1660.394889][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1679.807625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1679.807909][    C2] rcu: 2-....: (727743 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=170064
| [ 1679.808128][    C2] rcu: (t=728035 jiffies g=521497 q=19626 ncpus=4)
| [ 1679.808315][    C2] Tainted: [L]=SOFTLOCKUP
[ 1679.808316][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1679.808317][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1679.808321][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1679.808322][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1679.808324][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1679.808325][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1679.808326][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1679.808327][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1679.808328][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1679.808330][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1679.808332][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1679.808333][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1679.808334][    C2] PKRU: 55555554
[ 1679.808335][    C2] Call Trace:
[ 1679.808335][    C2]  <TASK>
[ 1679.808336][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1679.808339][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1679.808341][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1679.808343][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1679.808345][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1679.808347][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1679.808349][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1679.808352][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1679.808355][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1679.808356][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1679.808359][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1679.808361][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1679.808363][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1679.808365][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1679.808367][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1679.808369][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1679.808371][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1679.808373][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1679.808375][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1679.808377][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1679.808379][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1679.808382][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1679.808384][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1679.808385][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1679.808387][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1679.808389][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1679.808390][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1679.808392][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1679.808394][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1679.808395][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1679.808397][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1679.808399][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1679.808400][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1679.808402][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1679.808404][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1679.808406][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1679.808407][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1679.808409][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1679.808410][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1679.808412][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1679.808414][    C2]  vfs_write (fs/read_write.c:686)
[ 1679.808416][    C2]  ksys_write (fs/read_write.c:739)
[ 1679.808418][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1679.808420][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1679.808422][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1679.808423][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1679.808425][    C2] RIP: 0033:0x7f814975fc5e
[ 1679.808427][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1679.808428][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1679.808429][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1679.808430][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1679.808431][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1679.808431][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1679.808432][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1704.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1704.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1704.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1704.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 1704.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1704.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1704.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1704.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1704.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1704.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1704.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1704.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1704.394778][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1704.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1704.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1704.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1704.394785][    C2] PKRU: 55555554
[ 1704.394786][    C2] Call Trace:
[ 1704.394790][    C2]  <TASK>
[ 1704.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1704.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1704.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1704.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1704.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1704.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1704.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1704.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1704.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1704.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1704.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1704.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1704.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1704.394822][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1704.394824][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1704.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1704.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1704.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1704.394833][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1704.394835][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1704.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1704.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1704.394842][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1704.394844][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1704.394846][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1704.394847][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1704.394848][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1704.394850][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1704.394852][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1704.394853][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1704.394855][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1704.394857][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1704.394859][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1704.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1704.394862][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1704.394863][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1704.394865][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1704.394867][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1704.394868][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1704.394870][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1704.394872][    C2]  vfs_write (fs/read_write.c:686)
[ 1704.394874][    C2]  ksys_write (fs/read_write.c:739)
[ 1704.394876][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1704.394878][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1704.394880][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1704.394881][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1704.394884][    C2] RIP: 0033:0x7f814975fc5e
[ 1704.394886][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1704.394887][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1704.394888][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1704.394889][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1704.394890][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1704.394891][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1704.394891][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1705.296014][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1705.296124][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1705.296227][    C2] NMI backtrace for cpu 2
| [ 1705.296234][    C2] Tainted: [L]=SOFTLOCKUP
[ 1705.296235][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1705.296236][    C2] RIP: 0010:irq_entries_start (./arch/x86/include/asm/idtentry.h:551)
[ 1705.296239][    C2] Code: c9 45 31 c0 45 31 c9 45 31 d2 45 31 db 31 db 31 ed 45 31 e4 45 31 ed 45 31 f6 45 31 ff c3 90 66 66 2e 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 6a 20 e9 b5 11 00 00 cc cc cc cc cc f3 0f 1e fa 6a 21
All code
========
   0:	c9                   	leave
   1:	45 31 c0             	xor    %r8d,%r8d
   4:	45 31 c9             	xor    %r9d,%r9d
   7:	45 31 d2             	xor    %r10d,%r10d
   a:	45 31 db             	xor    %r11d,%r11d
   d:	31 db                	xor    %ebx,%ebx
   f:	31 ed                	xor    %ebp,%ebp
  11:	45 31 e4             	xor    %r12d,%r12d
  14:	45 31 ed             	xor    %r13d,%r13d
  17:	45 31 f6             	xor    %r14d,%r14d
  1a:	45 31 ff             	xor    %r15d,%r15d
  1d:	c3                   	ret
  1e:	90                   	nop
  1f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  26:	00 00 00 00 
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	6a 20                	push   $0x20
  30:	e9 b5 11 00 00       	jmp    0x11ea
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	f3 0f 1e fa          	endbr64
  3e:	6a 21                	push   $0x21

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	6a 20                	push   $0x20
   6:	e9 b5 11 00 00       	jmp    0x11c0
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	f3 0f 1e fa          	endbr64
  14:	6a 21                	push   $0x21
[ 1705.296240][    C2] RSP: 0018:ffa0000000617558 EFLAGS: 00000002
[ 1705.296242][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1705.296243][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1705.296244][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1705.296245][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1705.296245][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1705.296248][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1705.296250][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1705.296251][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1705.296252][    C2] PKRU: 55555554
[ 1705.296252][    C2] Call Trace:
[ 1705.296254][    C2]  <TASK>
[ 1705.296254][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1705.296256][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1705.296257][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1705.296260][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1705.296262][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1705.296264][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1705.296266][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1705.296268][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1705.296270][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1705.296272][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1705.296275][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1705.296277][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1705.296279][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1705.296281][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1705.296284][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1705.296286][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1705.296288][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1705.296290][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1705.296292][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1705.296294][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1705.296296][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1705.296298][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1705.296300][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1705.296301][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1705.296304][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1705.296306][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1705.296308][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1705.296310][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1705.296311][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1705.296312][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1705.296314][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1705.296316][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1705.296317][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1705.296320][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1705.296321][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1705.296322][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1705.296324][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1705.296326][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1705.296327][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1705.296329][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1705.296331][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1705.296332][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1705.296334][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1705.296336][    C2]  vfs_write (fs/read_write.c:686)
[ 1705.296338][    C2]  ksys_write (fs/read_write.c:739)
[ 1705.296340][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1705.296341][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1705.296343][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1705.296345][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1705.296347][    C2] RIP: 0033:0x7f814975fc5e
[ 1705.296348][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1705.296349][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1705.296350][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1705.296351][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1705.296352][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1705.296352][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1705.296353][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1732.394764][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1732.394766][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1732.394768][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1732.394775][    C2] Tainted: [L]=SOFTLOCKUP
[ 1732.394775][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1732.394776][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1732.394779][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1732.394780][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1732.394782][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1732.394783][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1732.394783][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1732.394784][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1732.394785][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1732.394787][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1732.394790][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1732.394791][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1732.394792][    C2] PKRU: 55555554
[ 1732.394793][    C2] Call Trace:
[ 1732.394796][    C2]  <TASK>
[ 1732.394799][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1732.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1732.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1732.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1732.394808][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1732.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1732.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1732.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1732.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1732.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1732.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1732.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1732.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1732.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1732.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1732.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1732.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1732.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1732.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1732.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1732.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1732.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1732.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1732.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1732.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1732.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1732.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1732.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1732.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1732.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1732.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1732.394868][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1732.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1732.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1732.394873][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1732.394875][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1732.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1732.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1732.394880][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1732.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1732.394884][    C2]  vfs_write (fs/read_write.c:686)
[ 1732.394886][    C2]  ksys_write (fs/read_write.c:739)
[ 1732.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1732.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1732.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1732.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1732.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 1732.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1732.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1732.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1732.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1732.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1732.394901][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1732.394902][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1757.811626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1757.811936][    C2] rcu: 2-....: (805715 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=187881
| [ 1757.812168][    C2] rcu: (t=806039 jiffies g=521497 q=21146 ncpus=4)
| [ 1757.812309][    C2] Tainted: [L]=SOFTLOCKUP
[ 1757.812310][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1757.812311][    C2] RIP: 0010:kasan_check_range (./arch/x86/include/asm/cpufeature.h:101 mm/kasan/kasan.h:334 mm/kasan/generic.c:188 mm/kasan/generic.c:200)
[ 1757.812316][    C2] Code: 00 00 00 00 0f 1f 40 d6 48 85 f6 0f 84 9a 01 00 00 48 89 f8 41 57 49 89 c8 48 01 f0 41 56 53 0f 82 f5 00 00 00 0f 1f 44 00 00 <48> b8 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   8:	48 85 f6             	test   %rsi,%rsi
   b:	0f 84 9a 01 00 00    	je     0x1ab
  11:	48 89 f8             	mov    %rdi,%rax
  14:	41 57                	push   %r15
  16:	49 89 c8             	mov    %rcx,%r8
  19:	48 01 f0             	add    %rsi,%rax
  1c:	41 56                	push   %r14
  1e:	53                   	push   %rbx
  1f:	0f 82 f5 00 00 00    	jb     0x11a
  25:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  2a:*	48 b8 00 00 00 00 00 	movabs $0xff00000000000000,%rax		<-- trapping instruction
  31:	00 00 ff 
  34:	eb 0a                	jmp    0x40
  36:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  3d:	80 ff ff 

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xff00000000000000,%rax
   7:	00 00 ff 
   a:	eb 0a                	jmp    0x16
   c:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  13:	80 ff ff 
[ 1757.812318][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000282
[ 1757.812320][    C2] RAX: ff11000012560b4c RBX: ff11000012560b48 RCX: ffffffffac5390f1
[ 1757.812321][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1757.812321][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1757.812322][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1757.812323][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1757.812325][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1757.812328][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1757.812329][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1757.812329][    C2] PKRU: 55555554
[ 1757.812330][    C2] Call Trace:
[ 1757.812331][    C2]  <TASK>
[ 1757.812332][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1757.812334][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1757.812337][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1757.812339][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1757.812341][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1757.812343][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1757.812345][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1757.812347][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1757.812349][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1757.812352][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1757.812354][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1757.812356][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1757.812359][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1757.812361][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1757.812362][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1757.812364][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1757.812366][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1757.812369][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1757.812371][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1757.812373][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1757.812375][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1757.812376][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1757.812379][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1757.812381][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1757.812383][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1757.812385][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1757.812386][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1757.812387][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1757.812389][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1757.812391][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1757.812392][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1757.812395][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1757.812396][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1757.812398][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1757.812399][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1757.812401][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1757.812402][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1757.812404][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1757.812406][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1757.812407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1757.812409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1757.812411][    C2]  vfs_write (fs/read_write.c:686)
[ 1757.812413][    C2]  ksys_write (fs/read_write.c:739)
[ 1757.812415][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1757.812417][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1757.812419][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1757.812420][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1757.812422][    C2] RIP: 0033:0x7f814975fc5e
[ 1757.812424][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1757.812425][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1757.812426][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1757.812427][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1757.812427][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1757.812428][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1757.812429][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1784.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1784.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1784.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1784.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 1784.394767][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1784.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1784.394771][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1784.394772][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1784.394774][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1784.394775][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1784.394775][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1784.394776][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1784.394777][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1784.394779][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1784.394782][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1784.394783][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1784.394784][    C2] PKRU: 55555554
[ 1784.394784][    C2] Call Trace:
[ 1784.394787][    C2]  <TASK>
[ 1784.394790][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1784.394792][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1784.394794][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1784.394797][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1784.394799][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1784.394800][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1784.394803][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1784.394805][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1784.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1784.394810][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1784.394812][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1784.394815][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1784.394817][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1784.394819][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1784.394821][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1784.394823][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1784.394825][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1784.394827][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1784.394829][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1784.394831][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1784.394833][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1784.394836][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1784.394838][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1784.394840][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1784.394842][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1784.394843][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1784.394844][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1784.394846][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1784.394848][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1784.394849][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1784.394852][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1784.394853][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1784.394855][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1784.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1784.394858][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1784.394860][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1784.394861][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1784.394863][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1784.394865][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1784.394866][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1784.394868][    C2]  vfs_write (fs/read_write.c:686)
[ 1784.394870][    C2]  ksys_write (fs/read_write.c:739)
[ 1784.394872][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1784.394874][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1784.394876][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1784.394878][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1784.394880][    C2] RIP: 0033:0x7f814975fc5e
[ 1784.394882][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1784.394883][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1784.394885][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1784.394886][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1784.394886][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1784.394887][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1784.394888][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1803.599974][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1803.600106][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1803.600251][    C2] NMI backtrace for cpu 2
| [ 1803.600260][    C2] Tainted: [L]=SOFTLOCKUP
[ 1803.600261][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1803.600262][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 1803.600267][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 1803.600268][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 1803.600270][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 1803.600271][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 1803.600272][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 1803.600273][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 1803.600274][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 1803.600276][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1803.600280][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1803.600281][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1803.600281][    C2] PKRU: 55555554
[ 1803.600282][    C2] Call Trace:
[ 1803.600285][    C2]  <IRQ>
[ 1803.600288][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 1803.600289][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 1803.600293][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 1803.600295][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 1803.600297][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1803.600300][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1803.600302][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1803.600304][    C2]  </IRQ>
[ 1803.600305][    C2]  <TASK>
[ 1803.600306][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1803.600308][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1803.600310][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1803.600311][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1803.600312][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1803.600313][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1803.600313][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1803.600314][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1803.600314][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1803.600316][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1803.600318][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1803.600320][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1803.600322][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1803.600324][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1803.600326][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1803.600328][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1803.600330][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1803.600333][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1803.600336][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1803.600338][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1803.600340][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1803.600343][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1803.600345][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1803.600346][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1803.600348][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1803.600351][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1803.600353][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1803.600355][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1803.600357][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1803.600359][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1803.600361][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1803.600364][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1803.600366][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1803.600367][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1803.600369][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1803.600371][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1803.600372][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1803.600374][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1803.600376][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1803.600377][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1803.600380][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1803.600381][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1803.600382][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1803.600384][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1803.600386][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1803.600387][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1803.600389][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1803.600391][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1803.600392][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1803.600394][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1803.600396][    C2]  vfs_write (fs/read_write.c:686)
[ 1803.600398][    C2]  ksys_write (fs/read_write.c:739)
[ 1803.600400][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1803.600401][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1803.600404][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1803.600405][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1803.600407][    C2] RIP: 0033:0x7f814975fc5e
[ 1803.600409][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1803.600410][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1803.600411][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1803.600412][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1803.600413][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1803.600413][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1803.600414][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1828.394775][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1828.394777][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1828.394781][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1828.394791][    C2] Tainted: [L]=SOFTLOCKUP
[ 1828.394792][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1828.394794][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1828.394798][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1828.394799][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1828.394801][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1828.394803][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1828.394804][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1828.394804][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1828.394805][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1828.394808][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1828.394811][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1828.394812][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1828.394813][    C2] PKRU: 55555554
[ 1828.394814][    C2] Call Trace:
[ 1828.394818][    C2]  <TASK>
[ 1828.394822][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1828.394827][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1828.394830][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1828.394834][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1828.394838][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1828.394839][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1828.394842][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1828.394845][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1828.394848][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1828.394850][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1828.394852][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1828.394855][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1828.394857][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1828.394859][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1828.394861][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1828.394864][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1828.394868][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1828.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1828.394872][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1828.394874][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1828.394876][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1828.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1828.394883][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1828.394885][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1828.394889][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1828.394892][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1828.394893][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1828.394896][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1828.394899][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1828.394900][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1828.394903][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1828.394904][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1828.394907][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1828.394908][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1828.394910][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1828.394913][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1828.394914][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1828.394916][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1828.394917][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1828.394919][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1828.394921][    C2]  vfs_write (fs/read_write.c:686)
[ 1828.394924][    C2]  ksys_write (fs/read_write.c:739)
[ 1828.394926][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1828.394928][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1828.394930][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1828.394933][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1828.394936][    C2] RIP: 0033:0x7f814975fc5e
[ 1828.394941][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1828.394942][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1828.394944][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1828.394945][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1828.394945][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1828.394946][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1828.394947][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1835.815625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1835.815870][    C2] rcu: 2-....: (883685 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=204829
| [ 1835.816152][    C2] rcu: (t=884043 jiffies g=521497 q=22743 ncpus=4)
| [ 1835.816296][    C2] Tainted: [L]=SOFTLOCKUP
[ 1835.816297][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1835.816299][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1835.816308][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1835.816309][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1835.816312][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1835.816314][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1835.816315][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1835.816315][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1835.816316][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1835.816319][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1835.816322][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1835.816323][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1835.816323][    C2] PKRU: 55555554
[ 1835.816324][    C2] Call Trace:
[ 1835.816325][    C2]  <TASK>
[ 1835.816326][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1835.816331][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1835.816333][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1835.816337][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1835.816340][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1835.816342][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1835.816346][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1835.816348][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1835.816351][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1835.816353][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1835.816355][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1835.816357][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1835.816360][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1835.816361][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1835.816363][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1835.816365][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1835.816370][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1835.816372][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1835.816374][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1835.816376][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1835.816378][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1835.816381][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1835.816384][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1835.816386][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1835.816389][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1835.816392][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1835.816394][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1835.816396][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1835.816399][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1835.816400][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1835.816402][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1835.816404][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1835.816406][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1835.816408][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1835.816410][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1835.816412][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1835.816413][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1835.816415][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1835.816417][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1835.816418][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1835.816420][    C2]  vfs_write (fs/read_write.c:686)
[ 1835.816422][    C2]  ksys_write (fs/read_write.c:739)
[ 1835.816424][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1835.816426][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1835.816428][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1835.816431][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1835.816433][    C2] RIP: 0033:0x7f814975fc5e
[ 1835.816435][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1835.816436][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1835.816438][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1835.816439][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1835.816439][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1835.816440][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1835.816441][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1860.394779][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1860.394781][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1860.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1860.394794][    C2] Tainted: [L]=SOFTLOCKUP
[ 1860.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1860.394797][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1860.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1860.394802][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1860.394804][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1860.394805][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1860.394806][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1860.394807][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1860.394808][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1860.394810][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1860.394814][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1860.394815][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1860.394816][    C2] PKRU: 55555554
[ 1860.394817][    C2] Call Trace:
[ 1860.394819][    C2]  <TASK>
[ 1860.394823][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1860.394828][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1860.394830][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1860.394834][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1860.394837][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1860.394839][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1860.394842][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1860.394844][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1860.394848][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1860.394850][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1860.394852][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1860.394855][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1860.394857][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1860.394859][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1860.394861][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1860.394863][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1860.394867][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1860.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1860.394871][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1860.394873][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1860.394876][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1860.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1860.394882][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1860.394884][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1860.394888][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1860.394890][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1860.394892][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1860.394894][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1860.394897][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1860.394898][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1860.394901][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1860.394903][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1860.394905][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1860.394907][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1860.394908][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1860.394911][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1860.394913][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1860.394914][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1860.394916][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1860.394917][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1860.394920][    C2]  vfs_write (fs/read_write.c:686)
[ 1860.394922][    C2]  ksys_write (fs/read_write.c:739)
[ 1860.394924][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1860.394926][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1860.394928][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1860.394931][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1860.394934][    C2] RIP: 0033:0x7f814975fc5e
[ 1860.394938][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1860.394939][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1860.394941][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1860.394942][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1860.394942][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1860.394943][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1860.394944][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1888.394776][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1888.394778][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1888.394782][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1888.394791][    C2] Tainted: [L]=SOFTLOCKUP
[ 1888.394792][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1888.394795][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1888.394798][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1888.394800][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1888.394802][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1888.394804][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1888.394804][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1888.394805][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1888.394806][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1888.394809][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1888.394812][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1888.394813][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1888.394814][    C2] PKRU: 55555554
[ 1888.394815][    C2] Call Trace:
[ 1888.394818][    C2]  <TASK>
[ 1888.394822][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1888.394828][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1888.394830][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1888.394834][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1888.394838][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1888.394840][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1888.394842][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1888.394845][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1888.394848][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1888.394850][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1888.394852][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1888.394855][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1888.394857][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1888.394859][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1888.394861][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1888.394864][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1888.394868][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1888.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1888.394872][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1888.394874][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1888.394877][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1888.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1888.394883][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1888.394885][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1888.394889][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1888.394892][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1888.394893][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1888.394895][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1888.394898][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1888.394900][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1888.394902][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1888.394904][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1888.394906][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1888.394908][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1888.394910][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1888.394912][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1888.394914][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1888.394916][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1888.394917][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1888.394919][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1888.394921][    C2]  vfs_write (fs/read_write.c:686)
[ 1888.394924][    C2]  ksys_write (fs/read_write.c:739)
[ 1888.394926][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1888.394928][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1888.394930][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1888.394933][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1888.394937][    C2] RIP: 0033:0x7f814975fc5e
[ 1888.394941][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1888.394943][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1888.394944][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1888.394945][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1888.394946][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1888.394947][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1888.394948][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1901.904159][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 1901.904288][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 1901.904431][    C2] NMI backtrace for cpu 2
| [ 1901.904441][    C2] Tainted: [L]=SOFTLOCKUP
[ 1901.904442][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1901.904443][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 1901.904449][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 1901.904451][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 1901.904453][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 1901.904455][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 1901.904456][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 1901.904456][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 1901.904457][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 1901.904460][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1901.904463][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1901.904464][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1901.904465][    C2] PKRU: 55555554
[ 1901.904465][    C2] Call Trace:
[ 1901.904468][    C2]  <IRQ>
[ 1901.904477][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 1901.904479][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 1901.904483][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 1901.904485][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 1901.904488][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 1901.904492][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 1901.904495][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 1901.904498][    C2]  </IRQ>
[ 1901.904499][    C2]  <TASK>
[ 1901.904499][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 1901.904502][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1901.904505][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1901.904506][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1901.904507][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1901.904508][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1901.904509][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1901.904509][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1901.904510][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1901.904511][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1901.904514][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1901.904516][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1901.904519][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1901.904522][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1901.904524][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1901.904526][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1901.904529][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1901.904532][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1901.904535][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1901.904536][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1901.904539][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1901.904542][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1901.904544][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1901.904545][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1901.904547][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1901.904550][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1901.904553][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1901.904555][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1901.904557][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1901.904559][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1901.904561][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1901.904564][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1901.904567][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1901.904569][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1901.904572][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1901.904574][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1901.904575][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1901.904577][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1901.904580][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1901.904582][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1901.904584][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1901.904586][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1901.904588][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1901.904589][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1901.904591][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1901.904593][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1901.904594][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1901.904596][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1901.904598][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1901.904599][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1901.904602][    C2]  vfs_write (fs/read_write.c:686)
[ 1901.904604][    C2]  ksys_write (fs/read_write.c:739)
[ 1901.904605][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1901.904607][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1901.904610][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1901.904611][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1901.904613][    C2] RIP: 0033:0x7f814975fc5e
[ 1901.904616][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1901.904616][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1901.904618][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1901.904619][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1901.904619][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1901.904620][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1901.904621][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1913.819625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1913.819859][    C2] rcu: 2-....: (961656 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=222836
| [ 1913.820140][    C2] rcu: (t=962047 jiffies g=521497 q=24354 ncpus=4)
| [ 1913.820282][    C2] Tainted: [L]=SOFTLOCKUP
[ 1913.820283][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1913.820284][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1913.820289][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1913.820291][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1913.820293][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1913.820294][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1913.820295][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1913.820296][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1913.820297][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1913.820299][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1913.820301][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1913.820302][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1913.820303][    C2] PKRU: 55555554
[ 1913.820303][    C2] Call Trace:
[ 1913.820304][    C2]  <TASK>
[ 1913.820305][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1913.820307][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1913.820310][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1913.820313][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1913.820315][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1913.820317][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1913.820320][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1913.820322][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1913.820324][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1913.820326][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1913.820328][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1913.820331][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1913.820333][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1913.820335][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1913.820337][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1913.820339][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1913.820341][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1913.820343][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1913.820345][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1913.820347][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1913.820349][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1913.820352][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1913.820354][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1913.820356][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1913.820359][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1913.820360][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1913.820362][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1913.820364][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1913.820366][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1913.820367][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1913.820369][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1913.820371][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1913.820372][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1913.820374][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1913.820376][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1913.820377][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1913.820379][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1913.820380][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1913.820382][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1913.820383][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1913.820386][    C2]  vfs_write (fs/read_write.c:686)
[ 1913.820388][    C2]  ksys_write (fs/read_write.c:739)
[ 1913.820389][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1913.820391][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1913.820393][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1913.820395][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1913.820397][    C2] RIP: 0033:0x7f814975fc5e
[ 1913.820399][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1913.820400][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1913.820401][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1913.820402][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1913.820403][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1913.820403][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1913.820404][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1940.394777][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1940.394779][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1940.394783][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1940.394792][    C2] Tainted: [L]=SOFTLOCKUP
[ 1940.394793][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1940.394795][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1940.394798][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1940.394800][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1940.394802][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1940.394803][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1940.394804][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1940.394805][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1940.394805][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1940.394808][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1940.394811][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1940.394812][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1940.394813][    C2] PKRU: 55555554
[ 1940.394814][    C2] Call Trace:
[ 1940.394816][    C2]  <TASK>
[ 1940.394818][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1940.394824][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1940.394826][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1940.394830][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1940.394834][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1940.394836][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1940.394838][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1940.394841][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1940.394845][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1940.394846][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1940.394849][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1940.394852][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1940.394854][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1940.394856][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1940.394858][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1940.394860][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1940.394865][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1940.394866][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1940.394869][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1940.394871][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1940.394873][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1940.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1940.394880][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1940.394882][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1940.394886][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1940.394889][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1940.394890][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1940.394893][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1940.394896][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1940.394897][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1940.394900][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1940.394901][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1940.394904][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1940.394905][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1940.394907][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1940.394910][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1940.394912][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1940.394913][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1940.394915][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1940.394916][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1940.394919][    C2]  vfs_write (fs/read_write.c:686)
[ 1940.394921][    C2]  ksys_write (fs/read_write.c:739)
[ 1940.394923][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1940.394925][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1940.394927][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1940.394930][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1940.394933][    C2] RIP: 0033:0x7f814975fc5e
[ 1940.394937][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1940.394938][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1940.394940][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1940.394941][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1940.394942][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1940.394943][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1940.394943][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1968.394779][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 1968.394781][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 1968.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 1968.394794][    C2] Tainted: [L]=SOFTLOCKUP
[ 1968.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1968.394798][    C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:141 mm/kasan/generic.c:172 mm/kasan/generic.c:191 mm/kasan/generic.c:200)
[ 1968.394804][    C2] Code: 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff 48 39 c7 0f 82 d1 00 00 00 4c 8d 4c 37 ff 48 89 f9 4c 8d 74 37 ff <48> b8 00 00 00 00 00 fc ff df 49 c1 e9 03 48 c1 e9 03 4e 8d 54 08
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	00 ff                	add    %bh,%bh
   8:	eb 0a                	jmp    0x14
   a:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  11:	80 ff ff 
  14:	48 39 c7             	cmp    %rax,%rdi
  17:	0f 82 d1 00 00 00    	jb     0xee
  1d:	4c 8d 4c 37 ff       	lea    -0x1(%rdi,%rsi,1),%r9
  22:	48 89 f9             	mov    %rdi,%rcx
  25:	4c 8d 74 37 ff       	lea    -0x1(%rdi,%rsi,1),%r14
  2a:*	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax		<-- trapping instruction
  31:	fc ff df 
  34:	49 c1 e9 03          	shr    $0x3,%r9
  38:	48 c1 e9 03          	shr    $0x3,%rcx
  3c:	4e                   	rex.WRX
  3d:	8d                   	.byte 0x8d
  3e:	54                   	push   %rsp
  3f:	08                   	.byte 0x8

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	49 c1 e9 03          	shr    $0x3,%r9
   e:	48 c1 e9 03          	shr    $0x3,%rcx
  12:	4e                   	rex.WRX
  13:	8d                   	.byte 0x8d
  14:	54                   	push   %rsp
  15:	08                   	.byte 0x8
[ 1968.394806][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000206
[ 1968.394811][    C2] RAX: ff00000000000000 RBX: ff11000012560b48 RCX: ff11000012560b48
[ 1968.394812][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1968.394814][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ff11000012560b4b
[ 1968.394815][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1968.394815][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 1968.394818][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1968.394822][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1968.394823][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1968.394824][    C2] PKRU: 55555554
[ 1968.394824][    C2] Call Trace:
[ 1968.394827][    C2]  <TASK>
[ 1968.394831][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 1968.394835][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1968.394838][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1968.394841][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1968.394844][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1968.394848][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1968.394850][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1968.394852][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1968.394855][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1968.394858][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1968.394860][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1968.394862][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1968.394865][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1968.394867][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1968.394869][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1968.394871][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1968.394874][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1968.394878][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1968.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1968.394882][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1968.394884][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1968.394886][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1968.394889][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1968.394893][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1968.394895][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1968.394898][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1968.394901][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1968.394902][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1968.394905][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1968.394907][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1968.394909][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1968.394912][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1968.394913][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1968.394916][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1968.394918][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1968.394919][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1968.394922][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1968.394923][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1968.394925][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1968.394927][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1968.394928][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1968.394931][    C2]  vfs_write (fs/read_write.c:686)
[ 1968.394933][    C2]  ksys_write (fs/read_write.c:739)
[ 1968.394935][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1968.394937][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1968.394939][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1968.394942][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1968.394946][    C2] RIP: 0033:0x7f814975fc5e
[ 1968.394950][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1968.394951][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1968.394953][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1968.394954][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1968.394955][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1968.394956][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1968.394957][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 1991.823625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 1991.823939][    C2] rcu: 2-....: (1039635 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=240027
| [ 1991.824175][    C2] rcu: (t=1040051 jiffies g=521497 q=25497 ncpus=4)
| [ 1991.824318][    C2] Tainted: [L]=SOFTLOCKUP
[ 1991.824318][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1991.824320][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 1991.824324][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 1991.824326][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 1991.824328][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 1991.824329][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 1991.824330][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 1991.824331][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 1991.824332][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 1991.824334][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 1991.824337][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1991.824338][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 1991.824339][    C2] PKRU: 55555554
[ 1991.824340][    C2] Call Trace:
[ 1991.824341][    C2]  <TASK>
[ 1991.824342][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 1991.824344][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 1991.824347][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 1991.824349][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 1991.824351][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 1991.824353][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1991.824356][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 1991.824358][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 1991.824361][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 1991.824362][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 1991.824365][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 1991.824367][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 1991.824369][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 1991.824371][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 1991.824373][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 1991.824375][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 1991.824378][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 1991.824379][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1991.824382][    C2]  ? release_sock (net/core/sock.c:3794)
[ 1991.824383][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 1991.824385][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 1991.824388][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1991.824390][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 1991.824392][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 1991.824394][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 1991.824395][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1991.824397][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 1991.824399][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 1991.824400][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 1991.824402][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1991.824404][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 1991.824406][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 1991.824407][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 1991.824409][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 1991.824410][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 1991.824412][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 1991.824414][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 1991.824415][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 1991.824417][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 1991.824418][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 1991.824421][    C2]  vfs_write (fs/read_write.c:686)
[ 1991.824423][    C2]  ksys_write (fs/read_write.c:739)
[ 1991.824424][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 1991.824426][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 1991.824428][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1991.824430][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 1991.824432][    C2] RIP: 0033:0x7f814975fc5e
[ 1991.824434][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1991.824435][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1991.824436][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 1991.824437][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 1991.824438][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 1991.824439][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 1991.824439][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2000.207961][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2000.208087][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2000.208198][    C2] NMI backtrace for cpu 2
| [ 2000.208207][    C2] Tainted: [L]=SOFTLOCKUP
[ 2000.208208][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2000.208209][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 2000.208214][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 2000.208215][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 2000.208218][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 2000.208219][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 2000.208220][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 2000.208220][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 2000.208221][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 2000.208224][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2000.208227][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2000.208228][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2000.208229][    C2] PKRU: 55555554
[ 2000.208229][    C2] Call Trace:
[ 2000.208231][    C2]  <IRQ>
[ 2000.208233][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 2000.208235][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 2000.208239][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 2000.208241][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2000.208244][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2000.208247][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2000.208250][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2000.208253][    C2]  </IRQ>
[ 2000.208254][    C2]  <TASK>
[ 2000.208254][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2000.208256][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2000.208259][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2000.208260][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2000.208261][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2000.208262][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2000.208262][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2000.208263][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2000.208264][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2000.208265][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2000.208268][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2000.208270][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2000.208272][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2000.208274][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2000.208276][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2000.208278][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2000.208281][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2000.208283][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2000.208286][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2000.208288][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2000.208290][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2000.208292][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2000.208295][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2000.208296][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2000.208298][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2000.208300][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2000.208303][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2000.208305][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2000.208307][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2000.208309][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2000.208310][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2000.208313][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2000.208316][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2000.208317][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2000.208319][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2000.208321][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2000.208322][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2000.208324][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2000.208326][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2000.208327][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2000.208329][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2000.208331][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2000.208333][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2000.208334][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2000.208336][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2000.208338][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2000.208339][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2000.208341][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2000.208342][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2000.208344][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2000.208346][    C2]  vfs_write (fs/read_write.c:686)
[ 2000.208348][    C2]  ksys_write (fs/read_write.c:739)
[ 2000.208350][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2000.208352][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2000.208354][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2000.208355][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2000.208357][    C2] RIP: 0033:0x7f814975fc5e
[ 2000.208359][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2000.208360][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2000.208361][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2000.208362][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2000.208363][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2000.208363][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2000.208364][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2024.394778][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2024.394780][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2024.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2024.394793][    C2] Tainted: [L]=SOFTLOCKUP
[ 2024.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2024.394797][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2024.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2024.394803][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2024.394805][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2024.394806][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2024.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2024.394808][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2024.394809][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2024.394811][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2024.394814][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2024.394815][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2024.394816][    C2] PKRU: 55555554
[ 2024.394817][    C2] Call Trace:
[ 2024.394821][    C2]  <TASK>
[ 2024.394824][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2024.394829][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2024.394831][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2024.394835][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2024.394839][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2024.394841][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2024.394843][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2024.394846][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2024.394849][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2024.394851][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2024.394853][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2024.394856][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2024.394858][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2024.394860][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2024.394862][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2024.394864][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2024.394869][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2024.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2024.394873][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2024.394875][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2024.394877][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2024.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2024.394884][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2024.394886][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2024.394890][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2024.394892][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2024.394894][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2024.394896][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2024.394899][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2024.394901][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2024.394903][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2024.394905][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2024.394907][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2024.394909][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2024.394910][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2024.394913][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2024.394915][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2024.394916][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2024.394918][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2024.394919][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2024.394922][    C2]  vfs_write (fs/read_write.c:686)
[ 2024.394924][    C2]  ksys_write (fs/read_write.c:739)
[ 2024.394926][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2024.394928][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2024.394930][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2024.394933][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2024.394936][    C2] RIP: 0033:0x7f814975fc5e
[ 2024.394940][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2024.394942][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2024.394943][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2024.394944][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2024.394945][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2024.394946][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2024.394947][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2052.394778][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2052.394780][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2052.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2052.394793][    C2] Tainted: [L]=SOFTLOCKUP
[ 2052.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2052.394797][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2052.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2052.394803][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2052.394805][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2052.394807][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2052.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2052.394808][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2052.394809][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2052.394812][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2052.394815][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2052.394817][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2052.394817][    C2] PKRU: 55555554
[ 2052.394818][    C2] Call Trace:
[ 2052.394822][    C2]  <TASK>
[ 2052.394826][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2052.394831][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2052.394833][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2052.394837][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2052.394841][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2052.394843][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2052.394846][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2052.394848][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2052.394852][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2052.394854][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2052.394856][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2052.394859][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2052.394861][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2052.394863][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2052.394865][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2052.394867][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2052.394872][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2052.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2052.394876][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2052.394878][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2052.394880][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2052.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2052.394887][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2052.394889][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2052.394893][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2052.394895][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2052.394897][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2052.394900][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2052.394903][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2052.394904][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2052.394907][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2052.394908][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2052.394911][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2052.394913][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2052.394914][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2052.394917][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2052.394919][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2052.394921][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2052.394922][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2052.394924][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2052.394926][    C2]  vfs_write (fs/read_write.c:686)
[ 2052.394929][    C2]  ksys_write (fs/read_write.c:739)
[ 2052.394931][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2052.394933][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2052.394935][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2052.394938][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2052.394941][    C2] RIP: 0033:0x7f814975fc5e
[ 2052.394945][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2052.394946][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2052.394948][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2052.394949][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2052.394950][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2052.394950][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2052.394951][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2069.827625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2069.827875][    C2] rcu: 2-....: (1117606 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=271370
| [ 2069.828102][    C2] rcu: (t=1118055 jiffies g=521497 q=27091 ncpus=4)
| [ 2069.828287][    C2] Tainted: [L]=SOFTLOCKUP
[ 2069.828287][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2069.828289][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2069.828294][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2069.828295][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2069.828298][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2069.828299][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2069.828300][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2069.828301][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2069.828301][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2069.828303][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2069.828307][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2069.828308][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2069.828309][    C2] PKRU: 55555554
[ 2069.828309][    C2] Call Trace:
[ 2069.828310][    C2]  <TASK>
[ 2069.828311][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2069.828314][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2069.828316][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2069.828318][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2069.828321][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2069.828322][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2069.828325][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2069.828327][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2069.828330][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2069.828332][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2069.828334][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2069.828337][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2069.828339][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2069.828341][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2069.828343][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2069.828345][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2069.828347][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2069.828349][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2069.828351][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2069.828353][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2069.828355][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2069.828358][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2069.828360][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2069.828362][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2069.828369][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2069.828370][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2069.828372][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2069.828374][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2069.828375][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2069.828377][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2069.828379][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2069.828381][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2069.828382][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2069.828384][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2069.828386][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2069.828387][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2069.828389][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2069.828391][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2069.828392][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2069.828394][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2069.828396][    C2]  vfs_write (fs/read_write.c:686)
[ 2069.828398][    C2]  ksys_write (fs/read_write.c:739)
[ 2069.828400][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2069.828402][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2069.828404][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2069.828405][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2069.828407][    C2] RIP: 0033:0x7f814975fc5e
[ 2069.828409][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2069.828410][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2069.828412][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2069.828413][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2069.828413][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2069.828414][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2069.828415][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2096.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2096.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2096.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2096.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 2096.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2096.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2096.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2096.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2096.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2096.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2096.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2096.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2096.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2096.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2096.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2096.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2096.394790][    C2] PKRU: 55555554
[ 2096.394791][    C2] Call Trace:
[ 2096.394793][    C2]  <TASK>
[ 2096.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2096.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2096.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2096.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2096.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2096.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2096.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2096.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2096.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2096.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2096.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2096.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2096.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2096.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2096.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2096.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2096.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2096.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2096.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2096.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2096.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2096.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2096.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2096.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2096.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2096.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2096.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2096.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2096.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2096.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2096.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2096.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2096.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2096.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2096.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2096.394865][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2096.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2096.394868][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2096.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2096.394871][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2096.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 2096.394876][    C2]  ksys_write (fs/read_write.c:739)
[ 2096.394877][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2096.394879][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2096.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2096.394883][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2096.394885][    C2] RIP: 0033:0x7f814975fc5e
[ 2096.394887][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2096.394889][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2096.394890][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2096.394891][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2096.394892][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2096.394893][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2096.394893][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2098.512016][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2098.512149][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2098.512261][    C2] NMI backtrace for cpu 2
| [ 2098.512270][    C2] Tainted: [L]=SOFTLOCKUP
[ 2098.512271][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2098.512272][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 2098.512277][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 2098.512279][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 2098.512281][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 2098.512282][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 2098.512283][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 2098.512284][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 2098.512285][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 2098.512287][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2098.512291][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2098.512291][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2098.512292][    C2] PKRU: 55555554
[ 2098.512293][    C2] Call Trace:
[ 2098.512295][    C2]  <IRQ>
[ 2098.512297][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 2098.512299][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 2098.512302][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 2098.512304][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2098.512307][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2098.512310][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2098.512313][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2098.512316][    C2]  </IRQ>
[ 2098.512317][    C2]  <TASK>
[ 2098.512317][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2098.512319][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2098.512321][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2098.512323][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2098.512324][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2098.512324][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2098.512325][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2098.512326][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2098.512326][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2098.512328][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2098.512330][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2098.512332][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2098.512335][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2098.512337][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2098.512339][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2098.512341][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2098.512343][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2098.512345][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2098.512348][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2098.512350][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2098.512352][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2098.512355][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2098.512357][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2098.512359][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2098.512361][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2098.512363][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2098.512365][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2098.512367][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2098.512369][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2098.512372][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2098.512373][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2098.512376][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2098.512378][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2098.512380][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2098.512382][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2098.512383][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2098.512385][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2098.512387][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2098.512389][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2098.512390][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2098.512392][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2098.512394][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2098.512395][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2098.512397][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2098.512399][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2098.512401][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2098.512402][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2098.512404][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2098.512405][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2098.512407][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2098.512409][    C2]  vfs_write (fs/read_write.c:686)
[ 2098.512411][    C2]  ksys_write (fs/read_write.c:739)
[ 2098.512413][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2098.512415][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2098.512417][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2098.512419][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2098.512420][    C2] RIP: 0033:0x7f814975fc5e
[ 2098.512422][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2098.512423][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2098.512424][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2098.512425][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2098.512426][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2098.512427][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2098.512427][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2124.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2124.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2124.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2124.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 2124.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2124.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2124.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2124.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2124.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2124.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2124.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2124.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2124.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2124.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2124.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2124.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2124.394796][    C2] PKRU: 55555554
[ 2124.394796][    C2] Call Trace:
[ 2124.394800][    C2]  <TASK>
[ 2124.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2124.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2124.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2124.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2124.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2124.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2124.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2124.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2124.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2124.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2124.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2124.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2124.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2124.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2124.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2124.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2124.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2124.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2124.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2124.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2124.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2124.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2124.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2124.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2124.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2124.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2124.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2124.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2124.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2124.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2124.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2124.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2124.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2124.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2124.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2124.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2124.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2124.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2124.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2124.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2124.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 2124.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 2124.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2124.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2124.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2124.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2124.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 2124.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2124.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2124.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2124.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2124.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2124.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2124.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2147.831625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2147.831859][    C2] rcu: 2-....: (1195576 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=302392
| [ 2147.832129][    C2] rcu: (t=1196059 jiffies g=521497 q=28682 ncpus=4)
| [ 2147.832285][    C2] Tainted: [L]=SOFTLOCKUP
[ 2147.832286][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2147.832288][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2147.832292][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2147.832293][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2147.832295][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2147.832297][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2147.832297][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2147.832298][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2147.832299][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2147.832301][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2147.832304][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2147.832305][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2147.832306][    C2] PKRU: 55555554
[ 2147.832307][    C2] Call Trace:
[ 2147.832308][    C2]  <TASK>
[ 2147.832309][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2147.832311][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2147.832313][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2147.832316][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2147.832318][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2147.832320][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2147.832322][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2147.832324][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2147.832327][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2147.832329][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2147.832331][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2147.832334][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2147.832336][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2147.832337][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2147.832339][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2147.832341][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2147.832344][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2147.832346][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2147.832348][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2147.832350][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2147.832351][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2147.832354][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2147.832356][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2147.832358][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2147.832360][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2147.832362][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2147.832363][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2147.832365][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2147.832366][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2147.832368][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2147.832370][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2147.832372][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2147.832373][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2147.832375][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2147.832376][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2147.832378][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2147.832379][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2147.832381][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2147.832383][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2147.832384][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2147.832386][    C2]  vfs_write (fs/read_write.c:686)
[ 2147.832388][    C2]  ksys_write (fs/read_write.c:739)
[ 2147.832390][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2147.832392][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2147.832394][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2147.832396][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2147.832397][    C2] RIP: 0033:0x7f814975fc5e
[ 2147.832400][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2147.832401][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2147.832402][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2147.832403][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2147.832404][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2147.832404][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2147.832405][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2172.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2172.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2172.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2172.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 2172.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2172.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2172.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2172.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2172.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2172.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2172.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2172.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2172.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2172.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2172.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2172.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2172.394790][    C2] PKRU: 55555554
[ 2172.394791][    C2] Call Trace:
[ 2172.394793][    C2]  <TASK>
[ 2172.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2172.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2172.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2172.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2172.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2172.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2172.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2172.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2172.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2172.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2172.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2172.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2172.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2172.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2172.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2172.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2172.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2172.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2172.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2172.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2172.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2172.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2172.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2172.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2172.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2172.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2172.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2172.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2172.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2172.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2172.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2172.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2172.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2172.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2172.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2172.394865][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2172.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2172.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2172.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2172.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2172.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 2172.394876][    C2]  ksys_write (fs/read_write.c:739)
[ 2172.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2172.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2172.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2172.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2172.394885][    C2] RIP: 0033:0x7f814975fc5e
[ 2172.394888][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2172.394889][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2172.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2172.394891][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2172.394892][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2172.394893][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2172.394894][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2196.816012][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2196.816143][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2196.816298][    C2] NMI backtrace for cpu 2
| [ 2196.816308][    C2] Tainted: [L]=SOFTLOCKUP
[ 2196.816309][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2196.816310][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 2196.816314][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 2196.816316][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 2196.816318][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 2196.816320][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 2196.816321][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 2196.816321][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 2196.816322][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 2196.816325][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2196.816329][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2196.816330][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2196.816330][    C2] PKRU: 55555554
[ 2196.816331][    C2] Call Trace:
[ 2196.816334][    C2]  <IRQ>
[ 2196.816338][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 2196.816340][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 2196.816343][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 2196.816344][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2196.816347][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2196.816349][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2196.816351][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2196.816353][    C2]  </IRQ>
[ 2196.816354][    C2]  <TASK>
[ 2196.816355][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2196.816357][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2196.816359][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2196.816360][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2196.816361][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2196.816361][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2196.816362][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2196.816363][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2196.816363][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2196.816365][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2196.816367][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2196.816369][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2196.816371][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2196.816374][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2196.816376][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2196.816377][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2196.816380][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2196.816382][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2196.816385][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2196.816387][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2196.816389][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2196.816392][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2196.816394][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2196.816395][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2196.816397][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2196.816399][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2196.816402][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2196.816404][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2196.816406][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2196.816408][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2196.816410][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2196.816413][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2196.816415][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2196.816417][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2196.816419][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2196.816420][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2196.816421][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2196.816423][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2196.816425][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2196.816426][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2196.816429][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2196.816430][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2196.816432][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2196.816434][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2196.816435][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2196.816437][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2196.816439][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2196.816440][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2196.816442][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2196.816443][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2196.816446][    C2]  vfs_write (fs/read_write.c:686)
[ 2196.816448][    C2]  ksys_write (fs/read_write.c:739)
[ 2196.816450][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2196.816451][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2196.816453][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2196.816455][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2196.816457][    C2] RIP: 0033:0x7f814975fc5e
[ 2196.816459][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2196.816460][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2196.816461][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2196.816462][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2196.816463][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2196.816463][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2196.816464][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2224.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2224.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2224.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2224.394778][    C2] Tainted: [L]=SOFTLOCKUP
[ 2224.394779][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2224.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2224.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2224.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2224.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2224.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2224.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2224.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2224.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2224.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2224.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2224.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2224.394796][    C2] PKRU: 55555554
[ 2224.394797][    C2] Call Trace:
[ 2224.394799][    C2]  <TASK>
[ 2224.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2224.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2224.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2224.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2224.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2224.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2224.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2224.394818][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2224.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2224.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2224.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2224.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2224.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2224.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2224.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2224.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2224.394838][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2224.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2224.394842][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2224.394844][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2224.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2224.394849][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2224.394851][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2224.394853][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2224.394855][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2224.394857][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2224.394858][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2224.394860][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2224.394862][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2224.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2224.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2224.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2224.394869][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2224.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2224.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2224.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2224.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2224.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2224.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2224.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2224.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 2224.394886][    C2]  ksys_write (fs/read_write.c:739)
[ 2224.394888][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2224.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2224.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2224.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2224.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 2224.394898][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2224.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2224.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2224.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2224.394902][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2224.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2224.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2225.835624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2225.835883][    C2] rcu: 2-....: (1273547 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=333102
| [ 2225.836110][    C2] rcu: (t=1274063 jiffies g=521497 q=30276 ncpus=4)
| [ 2225.836261][    C2] Tainted: [L]=SOFTLOCKUP
[ 2225.836262][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2225.836262][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2225.836266][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2225.836267][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2225.836269][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2225.836270][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2225.836271][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2225.836272][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2225.836273][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2225.836274][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2225.836277][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2225.836278][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2225.836279][    C2] PKRU: 55555554
[ 2225.836279][    C2] Call Trace:
[ 2225.836280][    C2]  <TASK>
[ 2225.836281][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2225.836283][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2225.836286][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2225.836288][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2225.836290][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2225.836292][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2225.836294][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2225.836296][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2225.836300][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2225.836301][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2225.836304][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2225.836306][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2225.836308][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2225.836310][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2225.836312][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2225.836314][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2225.836316][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2225.836318][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2225.836320][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2225.836322][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2225.836324][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2225.836327][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2225.836329][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2225.836331][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2225.836333][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2225.836334][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2225.836336][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2225.836337][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2225.836339][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2225.836340][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2225.836343][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2225.836345][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2225.836346][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2225.836348][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2225.836349][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2225.836351][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2225.836353][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2225.836355][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2225.836356][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2225.836358][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2225.836360][    C2]  vfs_write (fs/read_write.c:686)
[ 2225.836362][    C2]  ksys_write (fs/read_write.c:739)
[ 2225.836364][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2225.836366][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2225.836368][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2225.836369][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2225.836371][    C2] RIP: 0033:0x7f814975fc5e
[ 2225.836373][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2225.836374][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2225.836375][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2225.836376][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2225.836377][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2225.836377][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2225.836378][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2252.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2252.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2252.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2252.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 2252.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2252.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2252.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2252.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2252.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2252.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2252.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2252.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2252.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2252.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2252.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2252.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2252.394787][    C2] PKRU: 55555554
[ 2252.394788][    C2] Call Trace:
[ 2252.394791][    C2]  <TASK>
[ 2252.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2252.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2252.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2252.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2252.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2252.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2252.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2252.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2252.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2252.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2252.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2252.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2252.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2252.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2252.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2252.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2252.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2252.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2252.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2252.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2252.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2252.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2252.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2252.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2252.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2252.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2252.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2252.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2252.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2252.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2252.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2252.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2252.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2252.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2252.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2252.394865][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2252.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2252.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2252.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2252.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2252.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 2252.394876][    C2]  ksys_write (fs/read_write.c:739)
[ 2252.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2252.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2252.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2252.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2252.394886][    C2] RIP: 0033:0x7f814975fc5e
[ 2252.394888][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2252.394889][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2252.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2252.394891][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2252.394892][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2252.394893][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2252.394894][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2280.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2280.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2280.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2280.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 2280.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2280.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2280.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2280.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2280.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2280.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2280.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2280.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2280.394778][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2280.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2280.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2280.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2280.394786][    C2] PKRU: 55555554
[ 2280.394786][    C2] Call Trace:
[ 2280.394789][    C2]  <TASK>
[ 2280.394792][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2280.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2280.394797][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2280.394799][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2280.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2280.394803][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2280.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2280.394808][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2280.394811][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2280.394813][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2280.394815][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2280.394818][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2280.394820][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2280.394821][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2280.394823][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2280.394825][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2280.394828][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2280.394830][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2280.394832][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2280.394834][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2280.394836][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2280.394839][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2280.394841][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2280.394843][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2280.394845][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2280.394846][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2280.394847][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2280.394849][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2280.394851][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2280.394852][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2280.394855][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2280.394856][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2280.394858][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2280.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2280.394861][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2280.394863][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2280.394865][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2280.394866][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2280.394868][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2280.394870][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2280.394872][    C2]  vfs_write (fs/read_write.c:686)
[ 2280.394874][    C2]  ksys_write (fs/read_write.c:739)
[ 2280.394876][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2280.394878][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2280.394880][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2280.394882][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2280.394884][    C2] RIP: 0033:0x7f814975fc5e
[ 2280.394886][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2280.394888][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2280.394889][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2280.394890][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2280.394891][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2280.394891][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2280.394892][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2295.120998][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2295.121125][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2295.121277][    C2] NMI backtrace for cpu 2
| [ 2295.121287][    C2] Tainted: [L]=SOFTLOCKUP
[ 2295.121287][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2295.121289][    C2] RIP: 0010:_raw_spin_lock (kernel/locking/spinlock.c:155)
[ 2295.121293][    C2] Code: bf 01 00 00 00 e8 f9 3e ce fd ff 74 24 08 48 8d 7b 18 45 31 c9 31 c9 41 b8 01 00 00 00 31 d2 31 f6 e8 dd d2 d9 fd 48 89 df 58 <5b> e9 13 1e da fd 0f 1f 00 f3 0f 1e fa 0f 1f 44 00 00 53 48 89 fb
All code
========
   0:	bf 01 00 00 00       	mov    $0x1,%edi
   5:	e8 f9 3e ce fd       	call   0xfffffffffdce3f03
   a:	ff 74 24 08          	push   0x8(%rsp)
   e:	48 8d 7b 18          	lea    0x18(%rbx),%rdi
  12:	45 31 c9             	xor    %r9d,%r9d
  15:	31 c9                	xor    %ecx,%ecx
  17:	41 b8 01 00 00 00    	mov    $0x1,%r8d
  1d:	31 d2                	xor    %edx,%edx
  1f:	31 f6                	xor    %esi,%esi
  21:	e8 dd d2 d9 fd       	call   0xfffffffffdd9d303
  26:	48 89 df             	mov    %rbx,%rdi
  29:	58                   	pop    %rax
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	e9 13 1e da fd       	jmp    0xfffffffffdda1e43
  30:	0f 1f 00             	nopl   (%rax)
  33:	f3 0f 1e fa          	endbr64
  37:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3c:	53                   	push   %rbx
  3d:	48 89 fb             	mov    %rdi,%rbx

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	e9 13 1e da fd       	jmp    0xfffffffffdda1e19
   6:	0f 1f 00             	nopl   (%rax)
   9:	f3 0f 1e fa          	endbr64
   d:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  12:	53                   	push   %rbx
  13:	48 89 fb             	mov    %rdi,%rbx
[ 2295.121295][    C2] RSP: 0018:ffa0000000218f50 EFLAGS: 00000086
[ 2295.121297][    C2] RAX: ffffffffaa306863 RBX: ff110000029804a8 RCX: 0000000000000000
[ 2295.121298][    C2] RDX: 0000000000000000 RSI: ffffffffac85d040 RDI: ff110000029804a8
[ 2295.121299][    C2] RBP: ff11000002980438 R08: 0000000000000001 R09: 0000000000000000
[ 2295.121300][    C2] R10: 0000000000000002 R11: 1fe2200006a6666a R12: 0000000000000000
[ 2295.121301][    C2] R13: ff110000029804a8 R14: ff11000002980440 R15: ff1100000298047c
[ 2295.121303][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2295.121306][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2295.121307][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2295.121308][    C2] PKRU: 55555554
[ 2295.121309][    C2] Call Trace:
[ 2295.121311][    C2]  <IRQ>
[ 2295.121313][    C2]  handle_irq_event (kernel/irq/internals.h:227 kernel/irq/handle.c:260)
[ 2295.121316][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2295.121318][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2295.121321][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2295.121323][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2295.121325][    C2]  </IRQ>
[ 2295.121325][    C2]  <TASK>
[ 2295.121326][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2295.121328][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2295.121330][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2295.121331][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2295.121332][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2295.121333][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2295.121333][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2295.121334][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2295.121335][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2295.121336][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2295.121339][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2295.121341][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2295.121343][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2295.121345][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2295.121347][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2295.121348][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2295.121351][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2295.121353][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2295.121356][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2295.121358][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2295.121360][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2295.121362][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2295.121365][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2295.121366][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2295.121368][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2295.121370][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2295.121373][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2295.121374][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2295.121377][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2295.121378][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2295.121380][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2295.121383][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2295.121385][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2295.121387][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2295.121389][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2295.121390][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2295.121391][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2295.121393][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2295.121395][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2295.121396][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2295.121399][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2295.121400][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2295.121402][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2295.121404][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2295.121405][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2295.121407][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2295.121408][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2295.121410][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2295.121412][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2295.121413][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2295.121416][    C2]  vfs_write (fs/read_write.c:686)
[ 2295.121418][    C2]  ksys_write (fs/read_write.c:739)
[ 2295.121419][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2295.121421][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2295.121423][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2295.121425][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2295.121426][    C2] RIP: 0033:0x7f814975fc5e
[ 2295.121428][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2295.121429][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2295.121431][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2295.121431][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2295.121432][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2295.121433][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2295.121433][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2303.839625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2303.839870][    C2] rcu: 2-....: (1351518 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=364902
| [ 2303.840152][    C2] rcu: (t=1352067 jiffies g=521497 q=31859 ncpus=4)
| [ 2303.840304][    C2] Tainted: [L]=SOFTLOCKUP
[ 2303.840305][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2303.840306][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2303.840310][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2303.840311][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2303.840314][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2303.840315][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2303.840316][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2303.840317][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2303.840317][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2303.840319][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2303.840322][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2303.840323][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2303.840324][    C2] PKRU: 55555554
[ 2303.840324][    C2] Call Trace:
[ 2303.840325][    C2]  <TASK>
[ 2303.840326][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2303.840329][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2303.840331][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2303.840333][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2303.840335][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2303.840337][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2303.840340][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2303.840342][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2303.840345][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2303.840347][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2303.840349][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2303.840352][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2303.840354][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2303.840355][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2303.840357][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2303.840359][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2303.840362][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2303.840364][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2303.840366][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2303.840368][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2303.840369][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2303.840372][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2303.840374][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2303.840376][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2303.840378][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2303.840380][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2303.840381][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2303.840383][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2303.840385][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2303.840386][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2303.840389][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2303.840390][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2303.840392][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2303.840394][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2303.840395][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2303.840397][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2303.840399][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2303.840400][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2303.840402][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2303.840404][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2303.840406][    C2]  vfs_write (fs/read_write.c:686)
[ 2303.840408][    C2]  ksys_write (fs/read_write.c:739)
[ 2303.840410][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2303.840411][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2303.840414][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2303.840415][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2303.840416][    C2] RIP: 0033:0x7f814975fc5e
[ 2303.840418][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2303.840419][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2303.840421][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2303.840422][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2303.840422][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2303.840423][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2303.840424][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2328.394761][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2328.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2328.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2328.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 2328.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2328.394774][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2328.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2328.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2328.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2328.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2328.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2328.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2328.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2328.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2328.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2328.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2328.394790][    C2] PKRU: 55555554
[ 2328.394791][    C2] Call Trace:
[ 2328.394794][    C2]  <TASK>
[ 2328.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2328.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2328.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2328.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2328.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2328.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2328.394815][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2328.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2328.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2328.394821][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2328.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2328.394826][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2328.394829][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2328.394830][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2328.394832][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2328.394834][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2328.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2328.394839][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2328.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2328.394843][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2328.394844][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2328.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2328.394850][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2328.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2328.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2328.394855][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2328.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2328.394858][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2328.394860][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2328.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2328.394864][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2328.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2328.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2328.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2328.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2328.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2328.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2328.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2328.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2328.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2328.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 2328.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 2328.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2328.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2328.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2328.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2328.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 2328.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2328.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2328.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2328.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2328.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2328.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2328.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2356.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2356.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2356.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2356.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 2356.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2356.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2356.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2356.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2356.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2356.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2356.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2356.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2356.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2356.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2356.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2356.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2356.394788][    C2] PKRU: 55555554
[ 2356.394788][    C2] Call Trace:
[ 2356.394791][    C2]  <TASK>
[ 2356.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2356.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2356.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2356.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2356.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2356.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2356.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2356.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2356.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2356.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2356.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2356.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2356.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2356.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2356.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2356.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2356.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2356.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2356.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2356.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2356.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2356.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2356.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2356.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2356.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2356.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2356.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2356.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2356.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2356.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2356.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2356.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2356.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2356.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2356.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2356.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2356.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2356.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2356.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2356.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2356.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 2356.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 2356.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2356.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2356.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2356.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2356.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 2356.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2356.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2356.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2356.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2356.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2356.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2356.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2381.843625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2381.843845][    C2] rcu: 2-....: (1429498 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=399201
| [ 2381.844138][    C2] rcu: (t=1430071 jiffies g=521497 q=32996 ncpus=4)
| [ 2381.844272][    C2] Tainted: [L]=SOFTLOCKUP
[ 2381.844273][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2381.844274][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2381.844278][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2381.844280][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2381.844282][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2381.844283][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2381.844284][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2381.844285][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2381.844286][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2381.844288][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2381.844291][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2381.844292][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2381.844293][    C2] PKRU: 55555554
[ 2381.844294][    C2] Call Trace:
[ 2381.844294][    C2]  <TASK>
[ 2381.844295][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2381.844298][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2381.844300][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2381.844303][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2381.844305][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2381.844307][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2381.844309][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2381.844311][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2381.844314][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2381.844316][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2381.844318][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2381.844321][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2381.844323][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2381.844324][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2381.844327][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2381.844329][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2381.844331][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2381.844333][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2381.844335][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2381.844337][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2381.844338][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2381.844341][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2381.844343][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2381.844345][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2381.844347][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2381.844349][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2381.844350][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2381.844352][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2381.844354][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2381.844355][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2381.844357][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2381.844359][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2381.844360][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2381.844362][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2381.844364][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2381.844365][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2381.844367][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2381.844368][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2381.844370][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2381.844372][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2381.844374][    C2]  vfs_write (fs/read_write.c:686)
[ 2381.844376][    C2]  ksys_write (fs/read_write.c:739)
[ 2381.844378][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2381.844379][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2381.844382][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2381.844383][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2381.844385][    C2] RIP: 0033:0x7f814975fc5e
[ 2381.844387][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2381.844388][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2381.844389][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2381.844390][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2381.844391][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2381.844392][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2381.844392][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2393.425010][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2393.425176][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2393.425297][    C2] NMI backtrace for cpu 2
| [ 2393.425307][    C2] Tainted: [L]=SOFTLOCKUP
[ 2393.425308][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2393.425309][    C2] RIP: 0010:lock_acquire (kernel/locking/lockdep.c:5828)
[ 2393.425313][    C2] Code: a8 fe ff ff 4c 89 14 24 e8 69 d3 23 02 4c 8b 14 24 e9 a1 fe ff ff e8 1b d2 23 02 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa <41> 56 41 55 41 89 cd 41 54 41 89 d4 55 89 f5 53 48 89 fb 48 83 ec
All code
========
   0:	a8 fe                	test   $0xfe,%al
   2:	ff                   	(bad)
   3:	ff 4c 89 14          	decl   0x14(%rcx,%rcx,4)
   7:	24 e8                	and    $0xe8,%al
   9:	69 d3 23 02 4c 8b    	imul   $0x8b4c0223,%ebx,%edx
   f:	14 24                	adc    $0x24,%al
  11:	e9 a1 fe ff ff       	jmp    0xfffffffffffffeb7
  16:	e8 1b d2 23 02       	call   0x223d236
  1b:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  22:	00 00 00 00 
  26:	f3 0f 1e fa          	endbr64
  2a:*	41 56                	push   %r14		<-- trapping instruction
  2c:	41 55                	push   %r13
  2e:	41 89 cd             	mov    %ecx,%r13d
  31:	41 54                	push   %r12
  33:	41 89 d4             	mov    %edx,%r12d
  36:	55                   	push   %rbp
  37:	89 f5                	mov    %esi,%ebp
  39:	53                   	push   %rbx
  3a:	48 89 fb             	mov    %rdi,%rbx
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	ec                   	in     (%dx),%al

Code starting with the faulting instruction
===========================================
   0:	41 56                	push   %r14
   2:	41 55                	push   %r13
   4:	41 89 cd             	mov    %ecx,%r13d
   7:	41 54                	push   %r12
   9:	41 89 d4             	mov    %edx,%r12d
   c:	55                   	push   %rbp
   d:	89 f5                	mov    %esi,%ebp
   f:	53                   	push   %rbx
  10:	48 89 fb             	mov    %rdi,%rbx
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	ec                   	in     (%dx),%al
[ 2393.425315][    C2] RSP: 0018:ffa0000000218f40 EFLAGS: 00000046
[ 2393.425317][    C2] RAX: 0000000000010403 RBX: ff110000029804a8 RCX: 0000000000000000
[ 2393.425319][    C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff110000029804c0
[ 2393.425320][    C2] RBP: ff11000002980438 R08: 0000000000000001 R09: 0000000000000000
[ 2393.425320][    C2] R10: dffffc0000000000 R11: 1fe2200006a6666a R12: 0000000000000000
[ 2393.425321][    C2] R13: ff110000029804a8 R14: ff11000002980440 R15: ff1100000298047c
[ 2393.425324][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2393.425327][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2393.425328][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2393.425329][    C2] PKRU: 55555554
[ 2393.425329][    C2] Call Trace:
[ 2393.425332][    C2]  <IRQ>
[ 2393.425333][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154)
[ 2393.425336][    C2]  ? handle_irq_event (kernel/irq/internals.h:227 kernel/irq/handle.c:260)
[ 2393.425339][    C2]  handle_irq_event (kernel/irq/internals.h:227 kernel/irq/handle.c:260)
[ 2393.425341][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2393.425344][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2393.425346][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2393.425348][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2393.425350][    C2]  </IRQ>
[ 2393.425351][    C2]  <TASK>
[ 2393.425351][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2393.425353][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2393.425355][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2393.425356][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2393.425357][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2393.425358][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2393.425359][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2393.425360][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2393.425360][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2393.425361][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2393.425364][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2393.425366][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2393.425368][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2393.425370][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2393.425372][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2393.425374][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2393.425376][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2393.425378][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2393.425381][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2393.425383][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2393.425385][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2393.425388][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2393.425390][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2393.425392][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2393.425394][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2393.425395][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2393.425398][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2393.425400][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2393.425402][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2393.425404][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2393.425405][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2393.425408][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2393.425410][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2393.425412][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2393.425414][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2393.425416][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2393.425417][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2393.425419][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2393.425421][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2393.425422][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2393.425424][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2393.425426][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2393.425427][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2393.425429][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2393.425431][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2393.425433][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2393.425434][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2393.425436][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2393.425437][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2393.425439][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2393.425441][    C2]  vfs_write (fs/read_write.c:686)
[ 2393.425443][    C2]  ksys_write (fs/read_write.c:739)
[ 2393.425445][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2393.425447][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2393.425449][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2393.425450][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2393.425452][    C2] RIP: 0033:0x7f814975fc5e
[ 2393.425454][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2393.425455][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2393.425457][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2393.425457][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2393.425458][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2393.425459][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2393.425460][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2420.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2420.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2420.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2420.394778][    C2] Tainted: [L]=SOFTLOCKUP
[ 2420.394779][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2420.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2420.394783][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2420.394785][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2420.394786][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2420.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2420.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2420.394789][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2420.394790][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2420.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2420.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2420.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2420.394797][    C2] PKRU: 55555554
[ 2420.394798][    C2] Call Trace:
[ 2420.394801][    C2]  <TASK>
[ 2420.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2420.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2420.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2420.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2420.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2420.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2420.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2420.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2420.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2420.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2420.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2420.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2420.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2420.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2420.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2420.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2420.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2420.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2420.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2420.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2420.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2420.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2420.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2420.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2420.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2420.394857][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2420.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2420.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2420.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2420.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2420.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2420.394868][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2420.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2420.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2420.394873][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2420.394875][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2420.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2420.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2420.394880][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2420.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2420.394884][    C2]  vfs_write (fs/read_write.c:686)
[ 2420.394886][    C2]  ksys_write (fs/read_write.c:739)
[ 2420.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2420.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2420.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2420.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2420.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 2420.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2420.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2420.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2420.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2420.394902][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2420.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2420.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2448.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2448.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2448.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2448.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 2448.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2448.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2448.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2448.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2448.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2448.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2448.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2448.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2448.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2448.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2448.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2448.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2448.394789][    C2] PKRU: 55555554
[ 2448.394789][    C2] Call Trace:
[ 2448.394793][    C2]  <TASK>
[ 2448.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2448.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2448.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2448.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2448.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2448.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2448.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2448.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2448.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2448.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2448.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2448.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2448.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2448.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2448.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2448.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2448.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2448.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2448.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2448.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2448.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2448.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2448.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2448.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2448.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2448.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2448.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2448.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2448.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2448.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2448.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2448.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2448.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2448.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2448.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2448.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2448.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2448.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2448.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2448.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2448.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 2448.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 2448.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2448.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2448.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2448.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2448.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 2448.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2448.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2448.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2448.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2448.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2448.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2448.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2459.847626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2459.847850][    C2] rcu: 2-....: (1507469 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=430001
| [ 2459.848069][    C2] rcu: (t=1508075 jiffies g=521497 q=34587 ncpus=4)
| [ 2459.848252][    C2] Tainted: [L]=SOFTLOCKUP
[ 2459.848253][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2459.848254][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2459.848258][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2459.848260][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2459.848262][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2459.848263][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2459.848264][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2459.848265][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2459.848265][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2459.848268][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2459.848270][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2459.848271][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2459.848272][    C2] PKRU: 55555554
[ 2459.848273][    C2] Call Trace:
[ 2459.848274][    C2]  <TASK>
[ 2459.848275][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2459.848277][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2459.848279][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2459.848282][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2459.848284][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2459.848286][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2459.848288][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2459.848290][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2459.848293][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2459.848295][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2459.848297][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2459.848300][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2459.848302][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2459.848303][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2459.848305][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2459.848307][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2459.848310][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2459.848312][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2459.848314][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2459.848316][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2459.848317][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2459.848320][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2459.848322][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2459.848324][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2459.848326][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2459.848328][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2459.848329][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2459.848331][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2459.848333][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2459.848334][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2459.848336][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2459.848338][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2459.848339][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2459.848341][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2459.848343][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2459.848344][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2459.848346][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2459.848348][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2459.848349][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2459.848351][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2459.848353][    C2]  vfs_write (fs/read_write.c:686)
[ 2459.848355][    C2]  ksys_write (fs/read_write.c:739)
[ 2459.848357][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2459.848359][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2459.848361][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2459.848362][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2459.848364][    C2] RIP: 0033:0x7f814975fc5e
[ 2459.848366][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2459.848367][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2459.848369][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2459.848370][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2459.848370][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2459.848371][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2459.848372][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2484.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2484.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2484.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2484.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 2484.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2484.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2484.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2484.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2484.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2484.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2484.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2484.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2484.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2484.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2484.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2484.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2484.394790][    C2] PKRU: 55555554
[ 2484.394790][    C2] Call Trace:
[ 2484.394793][    C2]  <TASK>
[ 2484.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2484.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2484.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2484.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2484.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2484.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2484.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2484.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2484.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2484.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2484.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2484.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2484.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2484.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2484.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2484.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2484.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2484.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2484.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2484.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2484.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2484.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2484.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2484.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2484.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2484.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2484.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2484.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2484.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2484.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2484.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2484.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2484.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2484.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2484.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2484.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2484.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2484.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2484.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2484.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2484.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 2484.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 2484.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2484.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2484.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2484.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2484.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 2484.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2484.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2484.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2484.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2484.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2484.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2484.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2491.728987][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2491.729159][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2491.729276][    C2] NMI backtrace for cpu 2
| [ 2491.729286][    C2] Tainted: [L]=SOFTLOCKUP
[ 2491.729287][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2491.729288][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 2491.729292][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 2491.729294][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 2491.729296][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 2491.729297][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 2491.729298][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 2491.729299][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 2491.729300][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 2491.729303][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2491.729306][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2491.729307][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2491.729308][    C2] PKRU: 55555554
[ 2491.729308][    C2] Call Trace:
[ 2491.729312][    C2]  <IRQ>
[ 2491.729315][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 2491.729317][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 2491.729320][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 2491.729321][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2491.729324][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2491.729326][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2491.729328][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2491.729330][    C2]  </IRQ>
[ 2491.729331][    C2]  <TASK>
[ 2491.729332][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2491.729334][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2491.729336][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2491.729337][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2491.729338][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2491.729338][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2491.729339][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2491.729340][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2491.729340][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2491.729342][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2491.729344][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2491.729346][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2491.729348][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2491.729350][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2491.729352][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2491.729354][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2491.729357][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2491.729359][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2491.729362][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2491.729364][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2491.729366][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2491.729369][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2491.729371][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2491.729372][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2491.729374][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2491.729376][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2491.729379][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2491.729381][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2491.729383][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2491.729385][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2491.729386][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2491.729389][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2491.729391][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2491.729393][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2491.729395][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2491.729397][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2491.729398][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2491.729400][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2491.729401][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2491.729403][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2491.729405][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2491.729407][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2491.729408][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2491.729410][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2491.729411][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2491.729413][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2491.729415][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2491.729416][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2491.729418][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2491.729419][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2491.729422][    C2]  vfs_write (fs/read_write.c:686)
[ 2491.729424][    C2]  ksys_write (fs/read_write.c:739)
[ 2491.729426][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2491.729427][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2491.729429][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2491.729431][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2491.729432][    C2] RIP: 0033:0x7f814975fc5e
[ 2491.729435][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2491.729436][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2491.729437][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2491.729438][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2491.729439][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2491.729439][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2491.729440][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2516.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2516.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2516.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2516.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 2516.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2516.394778][    C2] RIP: 0010:kasan_check_range (./arch/x86/include/asm/cpufeature.h:101 mm/kasan/kasan.h:334 mm/kasan/generic.c:188 mm/kasan/generic.c:200)
[ 2516.394783][    C2] Code: 00 00 00 00 0f 1f 40 d6 48 85 f6 0f 84 9a 01 00 00 48 89 f8 41 57 49 89 c8 48 01 f0 41 56 53 0f 82 f5 00 00 00 0f 1f 44 00 00 <48> b8 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   8:	48 85 f6             	test   %rsi,%rsi
   b:	0f 84 9a 01 00 00    	je     0x1ab
  11:	48 89 f8             	mov    %rdi,%rax
  14:	41 57                	push   %r15
  16:	49 89 c8             	mov    %rcx,%r8
  19:	48 01 f0             	add    %rsi,%rax
  1c:	41 56                	push   %r14
  1e:	53                   	push   %rbx
  1f:	0f 82 f5 00 00 00    	jb     0x11a
  25:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  2a:*	48 b8 00 00 00 00 00 	movabs $0xff00000000000000,%rax		<-- trapping instruction
  31:	00 00 ff 
  34:	eb 0a                	jmp    0x40
  36:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  3d:	80 ff ff 

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xff00000000000000,%rax
   7:	00 00 ff 
   a:	eb 0a                	jmp    0x16
   c:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  13:	80 ff ff 
[ 2516.394784][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000282
[ 2516.394786][    C2] RAX: ff11000012560b4c RBX: ff11000012560b48 RCX: ffffffffac5390f1
[ 2516.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2516.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2516.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2516.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2516.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2516.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2516.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2516.394797][    C2] PKRU: 55555554
[ 2516.394797][    C2] Call Trace:
[ 2516.394801][    C2]  <TASK>
[ 2516.394803][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2516.394806][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2516.394808][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2516.394810][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2516.394813][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2516.394815][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2516.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2516.394819][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2516.394821][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2516.394824][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2516.394826][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2516.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2516.394831][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2516.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2516.394835][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2516.394837][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2516.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2516.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2516.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2516.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2516.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2516.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2516.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2516.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2516.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2516.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2516.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2516.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2516.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2516.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2516.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2516.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2516.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2516.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2516.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2516.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2516.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2516.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2516.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2516.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2516.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2516.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 2516.394888][    C2]  ksys_write (fs/read_write.c:739)
[ 2516.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2516.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2516.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2516.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2516.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 2516.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2516.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2516.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2516.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2516.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2516.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2516.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2537.851626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2537.851845][    C2] rcu: 2-....: (1585440 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=465065
| [ 2537.852113][    C2] rcu: (t=1586079 jiffies g=521497 q=36181 ncpus=4)
| [ 2537.852244][    C2] Tainted: [L]=SOFTLOCKUP
[ 2537.852245][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2537.852246][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2537.852250][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2537.852252][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2537.852254][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2537.852255][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2537.852256][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2537.852257][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2537.852258][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2537.852260][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2537.852263][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2537.852264][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2537.852265][    C2] PKRU: 55555554
[ 2537.852265][    C2] Call Trace:
[ 2537.852266][    C2]  <TASK>
[ 2537.852267][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2537.852270][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2537.852272][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2537.852274][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2537.852276][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2537.852278][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2537.852280][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2537.852282][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2537.852285][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2537.852287][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2537.852289][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2537.852292][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2537.852294][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2537.852296][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2537.852298][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2537.852299][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2537.852302][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2537.852304][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2537.852306][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2537.852308][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2537.852309][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2537.852312][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2537.852314][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2537.852316][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2537.852318][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2537.852319][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2537.852321][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2537.852323][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2537.852324][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2537.852325][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2537.852328][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2537.852329][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2537.852331][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2537.852333][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2537.852334][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2537.852336][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2537.852337][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2537.852339][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2537.852340][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2537.852342][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2537.852344][    C2]  vfs_write (fs/read_write.c:686)
[ 2537.852346][    C2]  ksys_write (fs/read_write.c:739)
[ 2537.852348][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2537.852350][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2537.852352][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2537.852353][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2537.852355][    C2] RIP: 0033:0x7f814975fc5e
[ 2537.852357][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2537.852358][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2537.852359][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2537.852360][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2537.852361][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2537.852361][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2537.852362][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2564.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2564.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2564.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2564.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 2564.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2564.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2564.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2564.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2564.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2564.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2564.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2564.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2564.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2564.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2564.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2564.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2564.394789][    C2] PKRU: 55555554
[ 2564.394789][    C2] Call Trace:
[ 2564.394793][    C2]  <TASK>
[ 2564.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2564.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2564.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2564.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2564.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2564.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2564.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2564.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2564.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2564.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2564.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2564.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2564.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2564.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2564.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2564.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2564.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2564.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2564.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2564.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2564.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2564.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2564.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2564.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2564.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2564.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2564.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2564.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2564.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2564.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2564.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2564.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2564.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2564.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2564.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2564.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2564.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2564.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2564.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2564.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2564.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 2564.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 2564.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2564.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2564.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2564.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2564.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 2564.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2564.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2564.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2564.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2564.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2564.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2564.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2590.033043][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2590.033168][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2590.033283][    C2] NMI backtrace for cpu 2
| [ 2590.033293][    C2] Tainted: [L]=SOFTLOCKUP
[ 2590.033294][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2590.033295][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 2590.033300][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 2590.033302][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 2590.033304][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 2590.033305][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 2590.033306][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 2590.033307][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 2590.033308][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 2590.033311][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2590.033314][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2590.033315][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2590.033316][    C2] PKRU: 55555554
[ 2590.033317][    C2] Call Trace:
[ 2590.033319][    C2]  <IRQ>
[ 2590.033320][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 2590.033325][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 2590.033328][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2590.033330][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2590.033332][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2590.033334][    C2]  </IRQ>
[ 2590.033335][    C2]  <TASK>
[ 2590.033335][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2590.033337][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2590.033339][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2590.033340][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2590.033341][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2590.033342][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2590.033343][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2590.033343][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2590.033344][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2590.033345][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2590.033348][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2590.033350][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2590.033352][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2590.033354][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2590.033356][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2590.033358][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2590.033360][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2590.033362][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2590.033365][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2590.033367][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2590.033369][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2590.033372][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2590.033374][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2590.033376][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2590.033378][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2590.033380][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2590.033382][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2590.033384][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2590.033386][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2590.033388][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2590.033390][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2590.033393][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2590.033395][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2590.033397][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2590.033399][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2590.033400][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2590.033401][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2590.033403][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2590.033405][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2590.033406][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2590.033408][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2590.033410][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2590.033411][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2590.033413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2590.033415][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2590.033416][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2590.033418][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2590.033420][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2590.033421][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2590.033423][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2590.033425][    C2]  vfs_write (fs/read_write.c:686)
[ 2590.033427][    C2]  ksys_write (fs/read_write.c:739)
[ 2590.033429][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2590.033430][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2590.033433][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2590.033434][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2590.033436][    C2] RIP: 0033:0x7f814975fc5e
[ 2590.033438][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2590.033439][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2590.033440][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2590.033441][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2590.033441][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2590.033442][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2590.033443][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2615.855626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2615.855946][    C2] rcu: 2-....: (1663419 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=501021
| [ 2615.856163][    C2] rcu: (t=1664083 jiffies g=521497 q=37374 ncpus=4)
| [ 2615.856342][    C2] Tainted: [L]=SOFTLOCKUP
[ 2615.856343][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2615.856345][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2615.856349][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2615.856351][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2615.856354][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2615.856355][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2615.856356][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2615.856357][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2615.856357][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2615.856360][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2615.856363][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2615.856364][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2615.856365][    C2] PKRU: 55555554
[ 2615.856365][    C2] Call Trace:
[ 2615.856366][    C2]  <TASK>
[ 2615.856367][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2615.856370][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2615.856372][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2615.856374][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2615.856376][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2615.856378][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2615.856381][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2615.856383][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2615.856386][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2615.856388][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2615.856395][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2615.856397][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2615.856400][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2615.856401][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2615.856403][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2615.856405][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2615.856408][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2615.856410][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2615.856412][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2615.856414][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2615.856415][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2615.856418][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2615.856421][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2615.856423][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2615.856425][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2615.856426][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2615.856427][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2615.856429][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2615.856431][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2615.856432][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2615.856435][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2615.856436][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2615.856438][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2615.856440][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2615.856442][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2615.856443][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2615.856445][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2615.856447][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2615.856448][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2615.856450][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2615.856452][    C2]  vfs_write (fs/read_write.c:686)
[ 2615.856454][    C2]  ksys_write (fs/read_write.c:739)
[ 2615.856456][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2615.856458][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2615.856460][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2615.856461][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2615.856463][    C2] RIP: 0033:0x7f814975fc5e
[ 2615.856465][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2615.856466][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2615.856468][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2615.856469][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2615.856470][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2615.856470][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2615.856471][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2640.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2640.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2640.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2640.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 2640.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2640.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2640.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2640.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2640.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2640.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2640.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2640.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2640.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2640.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2640.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2640.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2640.394790][    C2] PKRU: 55555554
[ 2640.394790][    C2] Call Trace:
[ 2640.394794][    C2]  <TASK>
[ 2640.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2640.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2640.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2640.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2640.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2640.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2640.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2640.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2640.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2640.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2640.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2640.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2640.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2640.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2640.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2640.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2640.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2640.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2640.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2640.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2640.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2640.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2640.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2640.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2640.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2640.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2640.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2640.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2640.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2640.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2640.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2640.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2640.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2640.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2640.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2640.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2640.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2640.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2640.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2640.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2640.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 2640.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 2640.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2640.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2640.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2640.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2640.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 2640.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2640.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2640.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2640.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2640.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2640.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2640.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2668.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2668.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2668.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2668.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 2668.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2668.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2668.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2668.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2668.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2668.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2668.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2668.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2668.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2668.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2668.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2668.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2668.394787][    C2] PKRU: 55555554
[ 2668.394787][    C2] Call Trace:
[ 2668.394790][    C2]  <TASK>
[ 2668.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2668.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2668.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2668.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2668.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2668.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2668.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2668.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2668.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2668.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2668.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2668.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2668.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2668.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2668.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2668.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2668.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2668.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2668.394833][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2668.394835][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2668.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2668.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2668.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2668.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2668.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2668.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2668.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2668.394851][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2668.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2668.394854][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2668.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2668.394858][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2668.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2668.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2668.394863][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2668.394865][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2668.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2668.394868][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2668.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2668.394871][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2668.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 2668.394876][    C2]  ksys_write (fs/read_write.c:739)
[ 2668.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2668.394879][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2668.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2668.394883][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2668.394885][    C2] RIP: 0033:0x7f814975fc5e
[ 2668.394888][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2668.394889][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2668.394890][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2668.394891][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2668.394892][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2668.394893][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2668.394893][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2688.337040][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2688.337164][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2688.337282][    C2] NMI backtrace for cpu 2
| [ 2688.337292][    C2] Tainted: [L]=SOFTLOCKUP
[ 2688.337293][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2688.337294][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 2688.337298][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 2688.337300][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 2688.337302][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 2688.337304][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 2688.337305][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 2688.337305][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 2688.337306][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 2688.337309][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2688.337313][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2688.337314][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2688.337314][    C2] PKRU: 55555554
[ 2688.337315][    C2] Call Trace:
[ 2688.337318][    C2]  <IRQ>
[ 2688.337323][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 2688.337324][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 2688.337327][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 2688.337329][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2688.337332][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2688.337334][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2688.337336][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2688.337338][    C2]  </IRQ>
[ 2688.337339][    C2]  <TASK>
[ 2688.337339][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2688.337341][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2688.337344][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2688.337346][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2688.337347][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2688.337348][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2688.337349][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2688.337349][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2688.337350][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2688.337351][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2688.337352][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2688.337355][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2688.337356][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2688.337358][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2688.337361][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2688.337363][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2688.337364][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2688.337367][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2688.337369][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2688.337372][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2688.337374][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2688.337376][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2688.337379][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2688.337381][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2688.337383][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2688.337385][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2688.337387][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2688.337389][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2688.337391][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2688.337393][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2688.337395][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2688.337397][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2688.337400][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2688.337402][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2688.337404][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2688.337406][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2688.337407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2688.337408][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2688.337410][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2688.337412][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2688.337413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2688.337416][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2688.337417][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2688.337419][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2688.337421][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2688.337422][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2688.337424][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2688.337425][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2688.337427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2688.337429][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2688.337430][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2688.337433][    C2]  vfs_write (fs/read_write.c:686)
[ 2688.337434][    C2]  ksys_write (fs/read_write.c:739)
[ 2688.337436][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2688.337438][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2688.337440][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2688.337442][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2688.337443][    C2] RIP: 0033:0x7f814975fc5e
[ 2688.337446][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2688.337447][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2688.337448][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2688.337449][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2688.337450][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2688.337450][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2688.337451][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2693.859625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2693.859854][    C2] rcu: 2-....: (1741390 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=531571
| [ 2693.860126][    C2] rcu: (t=1742087 jiffies g=521497 q=38975 ncpus=4)
| [ 2693.860263][    C2] Tainted: [L]=SOFTLOCKUP
[ 2693.860263][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2693.860265][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2693.860269][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2693.860271][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2693.860273][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2693.860274][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2693.860275][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2693.860276][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2693.860277][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2693.860279][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2693.860281][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2693.860282][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2693.860283][    C2] PKRU: 55555554
[ 2693.860284][    C2] Call Trace:
[ 2693.860285][    C2]  <TASK>
[ 2693.860286][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2693.860288][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2693.860290][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2693.860293][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2693.860295][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2693.860297][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2693.860299][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2693.860301][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2693.860304][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2693.860306][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2693.860308][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2693.860310][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2693.860313][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2693.860314][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2693.860316][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2693.860318][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2693.860321][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2693.860323][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2693.860325][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2693.860327][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2693.860328][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2693.860331][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2693.860333][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2693.860335][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2693.860337][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2693.860338][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2693.860340][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2693.860342][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2693.860343][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2693.860344][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2693.860347][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2693.860349][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2693.860350][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2693.860352][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2693.860353][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2693.860355][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2693.860356][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2693.860358][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2693.860360][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2693.860361][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2693.860364][    C2]  vfs_write (fs/read_write.c:686)
[ 2693.860366][    C2]  ksys_write (fs/read_write.c:739)
[ 2693.860367][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2693.860369][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2693.860371][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2693.860373][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2693.860374][    C2] RIP: 0033:0x7f814975fc5e
[ 2693.860376][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2693.860377][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2693.860379][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2693.860380][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2693.860380][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2693.860381][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2693.860382][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2720.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2720.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2720.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2720.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 2720.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2720.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2720.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2720.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2720.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2720.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2720.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2720.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2720.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2720.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2720.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2720.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2720.394796][    C2] PKRU: 55555554
[ 2720.394797][    C2] Call Trace:
[ 2720.394800][    C2]  <TASK>
[ 2720.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2720.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2720.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2720.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2720.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2720.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2720.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2720.394821][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2720.394824][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2720.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2720.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2720.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2720.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2720.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2720.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2720.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2720.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2720.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2720.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2720.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2720.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2720.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2720.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2720.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2720.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2720.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2720.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2720.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2720.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2720.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2720.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2720.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2720.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2720.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2720.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2720.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2720.394878][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2720.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2720.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2720.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2720.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 2720.394888][    C2]  ksys_write (fs/read_write.c:739)
[ 2720.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2720.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2720.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2720.394896][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2720.394898][    C2] RIP: 0033:0x7f814975fc5e
[ 2720.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2720.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2720.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2720.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2720.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2720.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2720.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2748.394763][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2748.394765][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2748.394767][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2748.394775][    C2] Tainted: [L]=SOFTLOCKUP
[ 2748.394776][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2748.394777][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2748.394780][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2748.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2748.394783][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2748.394784][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2748.394785][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2748.394786][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2748.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2748.394789][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2748.394792][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2748.394793][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2748.394794][    C2] PKRU: 55555554
[ 2748.394795][    C2] Call Trace:
[ 2748.394799][    C2]  <TASK>
[ 2748.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2748.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2748.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2748.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2748.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2748.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2748.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2748.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2748.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2748.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2748.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2748.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2748.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2748.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2748.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2748.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2748.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2748.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2748.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2748.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2748.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2748.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2748.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2748.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2748.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2748.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2748.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2748.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2748.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2748.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2748.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2748.394868][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2748.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2748.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2748.394873][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2748.394875][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2748.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2748.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2748.394880][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2748.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2748.394884][    C2]  vfs_write (fs/read_write.c:686)
[ 2748.394886][    C2]  ksys_write (fs/read_write.c:739)
[ 2748.394888][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2748.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2748.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2748.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2748.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 2748.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2748.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2748.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2748.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2748.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2748.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2748.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2771.863626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2771.863854][    C2] rcu: 2-....: (1819370 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=565503
| [ 2771.864111][    C2] rcu: (t=1820091 jiffies g=521497 q=40112 ncpus=4)
| [ 2771.864243][    C2] Tainted: [L]=SOFTLOCKUP
[ 2771.864244][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2771.864246][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2771.864250][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2771.864252][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2771.864254][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2771.864255][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2771.864256][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2771.864257][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2771.864258][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2771.864260][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2771.864264][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2771.864265][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2771.864266][    C2] PKRU: 55555554
[ 2771.864266][    C2] Call Trace:
[ 2771.864267][    C2]  <TASK>
[ 2771.864268][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2771.864271][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2771.864273][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2771.864275][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2771.864278][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2771.864280][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2771.864282][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2771.864284][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2771.864287][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2771.864289][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2771.864291][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2771.864294][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2771.864296][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2771.864298][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2771.864300][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2771.864302][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2771.864304][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2771.864306][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2771.864308][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2771.864310][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2771.864312][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2771.864315][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2771.864317][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2771.864319][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2771.864324][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2771.864326][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2771.864327][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2771.864329][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2771.864331][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2771.864332][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2771.864335][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2771.864336][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2771.864338][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2771.864340][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2771.864341][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2771.864343][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2771.864345][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2771.864346][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2771.864348][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2771.864349][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2771.864352][    C2]  vfs_write (fs/read_write.c:686)
[ 2771.864354][    C2]  ksys_write (fs/read_write.c:739)
[ 2771.864356][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2771.864357][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2771.864360][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2771.864361][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2771.864363][    C2] RIP: 0033:0x7f814975fc5e
[ 2771.864365][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2771.864366][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2771.864368][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2771.864369][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2771.864369][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2771.864370][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2771.864371][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2786.641043][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2786.641167][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2786.641276][    C2] NMI backtrace for cpu 2
| [ 2786.641286][    C2] Tainted: [L]=SOFTLOCKUP
[ 2786.641287][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2786.641288][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 2786.641292][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 2786.641294][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 2786.641296][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 2786.641298][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 2786.641299][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 2786.641299][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 2786.641300][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 2786.641303][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2786.641307][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2786.641308][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2786.641308][    C2] PKRU: 55555554
[ 2786.641309][    C2] Call Trace:
[ 2786.641312][    C2]  <IRQ>
[ 2786.641315][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 2786.641317][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 2786.641320][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 2786.641322][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2786.641325][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2786.641327][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2786.641329][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2786.641331][    C2]  </IRQ>
[ 2786.641332][    C2]  <TASK>
[ 2786.641333][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2786.641334][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2786.641336][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 2786.641338][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 2786.641339][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2786.641339][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2786.641340][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2786.641341][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2786.641341][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2786.641343][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2786.641346][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2786.641348][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2786.641350][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2786.641352][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2786.641354][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2786.641356][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2786.641358][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2786.641360][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2786.641363][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2786.641365][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2786.641367][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2786.641370][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2786.641372][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2786.641374][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2786.641376][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2786.641378][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2786.641380][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2786.641382][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2786.641384][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2786.641386][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2786.641388][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2786.641391][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2786.641393][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2786.641395][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2786.641397][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2786.641398][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2786.641399][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2786.641401][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2786.641403][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2786.641405][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2786.641407][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2786.641409][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2786.641410][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2786.641412][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2786.641414][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2786.641415][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2786.641417][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2786.641427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2786.641429][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2786.641430][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2786.641433][    C2]  vfs_write (fs/read_write.c:686)
[ 2786.641435][    C2]  ksys_write (fs/read_write.c:739)
[ 2786.641436][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2786.641438][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2786.641440][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2786.641442][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2786.641443][    C2] RIP: 0033:0x7f814975fc5e
[ 2786.641445][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2786.641447][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2786.641448][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2786.641449][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2786.641450][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2786.641450][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2786.641451][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2812.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2812.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2812.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2812.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 2812.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2812.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2812.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2812.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2812.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2812.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2812.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2812.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2812.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2812.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2812.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2812.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2812.394796][    C2] PKRU: 55555554
[ 2812.394797][    C2] Call Trace:
[ 2812.394800][    C2]  <TASK>
[ 2812.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2812.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2812.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2812.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2812.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2812.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2812.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2812.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2812.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2812.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2812.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2812.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2812.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2812.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2812.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2812.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2812.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2812.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2812.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2812.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2812.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2812.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2812.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2812.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2812.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2812.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2812.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2812.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2812.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2812.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2812.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2812.394868][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2812.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2812.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2812.394873][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2812.394875][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2812.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2812.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2812.394880][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2812.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2812.394884][    C2]  vfs_write (fs/read_write.c:686)
[ 2812.394886][    C2]  ksys_write (fs/read_write.c:739)
[ 2812.394888][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2812.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2812.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2812.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2812.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 2812.394898][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2812.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2812.394901][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2812.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2812.394902][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2812.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2812.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2840.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2840.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2840.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2840.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 2840.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2840.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2840.394777][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2840.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2840.394780][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2840.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2840.394782][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2840.394783][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2840.394784][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2840.394786][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2840.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2840.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2840.394791][    C2] PKRU: 55555554
[ 2840.394791][    C2] Call Trace:
[ 2840.394795][    C2]  <TASK>
[ 2840.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2840.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2840.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2840.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2840.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2840.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2840.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2840.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2840.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2840.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2840.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2840.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2840.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2840.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2840.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2840.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2840.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2840.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2840.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2840.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2840.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2840.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2840.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2840.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2840.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2840.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2840.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2840.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2840.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2840.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2840.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2840.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2840.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2840.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2840.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2840.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2840.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2840.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2840.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2840.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2840.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 2840.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 2840.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2840.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2840.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2840.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2840.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 2840.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2840.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2840.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2840.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2840.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2840.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2840.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2849.867626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2849.867944][    C2] rcu: 2-....: (1897342 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=604502
| [ 2849.868190][    C2] rcu: (t=1898095 jiffies g=521497 q=41706 ncpus=4)
| [ 2849.868343][    C2] Tainted: [L]=SOFTLOCKUP
[ 2849.868344][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2849.868346][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2849.868350][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2849.868352][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2849.868354][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2849.868355][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2849.868356][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2849.868357][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2849.868358][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2849.868360][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2849.868363][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2849.868364][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2849.868365][    C2] PKRU: 55555554
[ 2849.868366][    C2] Call Trace:
[ 2849.868366][    C2]  <TASK>
[ 2849.868367][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2849.868370][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2849.868372][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2849.868374][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2849.868377][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2849.868378][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2849.868381][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2849.868383][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2849.868386][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2849.868387][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2849.868390][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2849.868392][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2849.868394][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2849.868396][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2849.868398][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2849.868400][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2849.868403][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2849.868404][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2849.868406][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2849.868408][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2849.868410][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2849.868413][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2849.868415][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2849.868417][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2849.868419][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2849.868420][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2849.868422][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2849.868424][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2849.868426][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2849.868427][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2849.868429][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2849.868431][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2849.868432][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2849.868434][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2849.868436][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2849.868437][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2849.868439][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2849.868441][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2849.868442][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2849.868444][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2849.868446][    C2]  vfs_write (fs/read_write.c:686)
[ 2849.868448][    C2]  ksys_write (fs/read_write.c:739)
[ 2849.868450][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2849.868452][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2849.868454][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2849.868455][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2849.868457][    C2] RIP: 0033:0x7f814975fc5e
[ 2849.868459][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2849.868460][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2849.868461][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2849.868462][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2849.868463][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2849.868463][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2849.868464][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2876.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2876.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2876.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2876.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 2876.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2876.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2876.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2876.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2876.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2876.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2876.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2876.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2876.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2876.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2876.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2876.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2876.394789][    C2] PKRU: 55555554
[ 2876.394790][    C2] Call Trace:
[ 2876.394793][    C2]  <TASK>
[ 2876.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2876.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2876.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2876.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2876.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2876.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2876.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2876.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2876.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2876.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2876.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2876.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2876.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2876.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2876.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2876.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2876.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2876.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2876.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2876.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2876.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2876.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2876.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2876.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2876.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2876.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2876.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2876.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2876.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2876.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2876.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2876.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2876.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2876.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2876.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2876.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2876.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2876.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2876.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2876.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2876.394878][    C2]  vfs_write (fs/read_write.c:686)
[ 2876.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 2876.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2876.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2876.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2876.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2876.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 2876.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2876.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2876.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2876.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2876.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2876.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2876.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2884.945058][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2884.945200][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2884.945328][    C2] NMI backtrace for cpu 2
| [ 2884.945337][    C2] Tainted: [L]=SOFTLOCKUP
[ 2884.945338][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2884.945339][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 2884.945343][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 2884.945344][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 2884.945346][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 2884.945348][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 2884.945349][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 2884.945349][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 2884.945350][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 2884.945353][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2884.945357][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2884.945358][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2884.945359][    C2] PKRU: 55555554
[ 2884.945359][    C2] Call Trace:
[ 2884.945362][    C2]  <IRQ>
[ 2884.945365][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 2884.945367][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 2884.945370][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 2884.945371][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2884.945374][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2884.945376][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2884.945378][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2884.945380][    C2]  </IRQ>
[ 2884.945381][    C2]  <TASK>
[ 2884.945381][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2884.945383][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2884.945385][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2884.945387][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2884.945388][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2884.945388][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2884.945389][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2884.945390][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2884.945390][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2884.945392][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2884.945395][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2884.945397][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2884.945399][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2884.945401][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2884.945403][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2884.945405][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2884.945407][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2884.945409][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2884.945412][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2884.945414][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2884.945416][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2884.945419][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2884.945421][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2884.945423][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2884.945424][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2884.945426][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2884.945429][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2884.945431][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2884.945433][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2884.945435][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2884.945437][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2884.945440][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2884.945442][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2884.945443][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2884.945445][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2884.945447][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2884.945448][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2884.945450][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2884.945452][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2884.945453][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2884.945456][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2884.945457][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2884.945459][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2884.945460][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2884.945462][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2884.945464][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2884.945465][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2884.945467][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2884.945468][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2884.945470][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2884.945472][    C2]  vfs_write (fs/read_write.c:686)
[ 2884.945474][    C2]  ksys_write (fs/read_write.c:739)
[ 2884.945476][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2884.945478][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2884.945480][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2884.945481][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2884.945483][    C2] RIP: 0033:0x7f814975fc5e
[ 2884.945485][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2884.945486][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2884.945488][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2884.945488][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2884.945489][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2884.945490][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2884.945491][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2912.394769][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2912.394771][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2912.394773][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2912.394781][    C2] Tainted: [L]=SOFTLOCKUP
[ 2912.394782][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2912.394784][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2912.394787][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2912.394788][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2912.394790][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2912.394791][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2912.394792][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2912.394793][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2912.394794][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2912.394796][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2912.394800][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2912.394801][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2912.394802][    C2] PKRU: 55555554
[ 2912.394802][    C2] Call Trace:
[ 2912.394806][    C2]  <TASK>
[ 2912.394808][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2912.394811][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2912.394813][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2912.394816][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2912.394819][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2912.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2912.394823][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2912.394825][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2912.394828][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2912.394830][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2912.394832][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2912.394835][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2912.394837][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2912.394839][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2912.394841][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2912.394843][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2912.394845][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2912.394847][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2912.394849][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2912.394851][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2912.394853][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2912.394856][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2912.394859][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2912.394860][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2912.394863][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2912.394864][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2912.394865][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2912.394867][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2912.394869][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2912.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2912.394873][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2912.394875][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2912.394876][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2912.394878][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2912.394879][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2912.394882][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2912.394883][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2912.394885][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2912.394886][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2912.394888][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2912.394890][    C2]  vfs_write (fs/read_write.c:686)
[ 2912.394892][    C2]  ksys_write (fs/read_write.c:739)
[ 2912.394894][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2912.394896][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2912.394898][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2912.394900][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2912.394902][    C2] RIP: 0033:0x7f814975fc5e
[ 2912.394904][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2912.394905][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2912.394907][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2912.394908][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2912.394908][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2912.394909][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2912.394910][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2927.871626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 2927.871855][    C2] rcu: 2-....: (1975314 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=643499
| [ 2927.872070][    C2] rcu: (t=1976099 jiffies g=521497 q=43303 ncpus=4)
| [ 2927.872253][    C2] Tainted: [L]=SOFTLOCKUP
[ 2927.872254][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2927.872256][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2927.872260][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2927.872261][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2927.872264][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2927.872265][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2927.872266][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2927.872266][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2927.872267][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2927.872270][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2927.872273][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2927.872274][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2927.872275][    C2] PKRU: 55555554
[ 2927.872276][    C2] Call Trace:
[ 2927.872277][    C2]  <TASK>
[ 2927.872278][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2927.872280][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2927.872283][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2927.872285][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2927.872287][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2927.872289][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2927.872292][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2927.872294][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2927.872297][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2927.872299][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2927.872301][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2927.872304][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2927.872306][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2927.872308][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2927.872310][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2927.872312][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2927.872314][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2927.872316][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2927.872318][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2927.872320][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2927.872322][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2927.872325][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2927.872327][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2927.872329][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2927.872331][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2927.872333][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2927.872334][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2927.872336][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2927.872338][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2927.872339][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2927.872341][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2927.872343][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2927.872345][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2927.872346][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2927.872348][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2927.872350][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2927.872351][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2927.872356][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2927.872358][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2927.872360][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2927.872362][    C2]  vfs_write (fs/read_write.c:686)
[ 2927.872364][    C2]  ksys_write (fs/read_write.c:739)
[ 2927.872366][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2927.872368][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2927.872370][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2927.872372][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2927.872373][    C2] RIP: 0033:0x7f814975fc5e
[ 2927.872375][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2927.872377][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2927.872378][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2927.872379][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2927.872380][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2927.872380][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2927.872381][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2952.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2952.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2952.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2952.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 2952.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2952.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2952.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2952.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2952.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2952.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2952.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2952.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2952.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2952.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2952.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2952.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2952.394789][    C2] PKRU: 55555554
[ 2952.394790][    C2] Call Trace:
[ 2952.394793][    C2]  <TASK>
[ 2952.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2952.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2952.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2952.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2952.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2952.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2952.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2952.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2952.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2952.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2952.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2952.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2952.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2952.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2952.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2952.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2952.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2952.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2952.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2952.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2952.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2952.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2952.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2952.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2952.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2952.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2952.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2952.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2952.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2952.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2952.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2952.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2952.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2952.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2952.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2952.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2952.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2952.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2952.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2952.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2952.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 2952.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 2952.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2952.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2952.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2952.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2952.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 2952.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2952.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2952.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2952.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2952.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2952.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2952.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2980.394761][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 2980.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 2980.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 2980.394772][    C2] Tainted: [L]=SOFTLOCKUP
[ 2980.394773][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2980.394775][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2980.394777][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2980.394779][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2980.394780][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2980.394782][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2980.394783][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2980.394784][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2980.394784][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2980.394787][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2980.394790][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2980.394791][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2980.394792][    C2] PKRU: 55555554
[ 2980.394793][    C2] Call Trace:
[ 2980.394796][    C2]  <TASK>
[ 2980.394800][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2980.394803][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2980.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2980.394807][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2980.394810][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2980.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2980.394814][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2980.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2980.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2980.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2980.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2980.394827][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2980.394829][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2980.394830][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2980.394833][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2980.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2980.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2980.394839][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2980.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2980.394843][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2980.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2980.394849][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2980.394851][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2980.394853][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2980.394855][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2980.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2980.394858][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2980.394860][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2980.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2980.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2980.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2980.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2980.394869][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2980.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2980.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2980.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2980.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2980.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2980.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2980.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2980.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 2980.394886][    C2]  ksys_write (fs/read_write.c:739)
[ 2980.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2980.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2980.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2980.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2980.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 2980.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2980.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2980.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2980.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2980.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2980.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2980.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 2983.248982][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 2983.249105][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 2983.249257][    C2] NMI backtrace for cpu 2
| [ 2983.249266][    C2] Tainted: [L]=SOFTLOCKUP
[ 2983.249267][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2983.249268][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 2983.249271][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 2983.249273][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 2983.249275][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 2983.249276][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 2983.249277][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 2983.249278][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 2983.249279][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 2983.249282][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 2983.249285][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2983.249286][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 2983.249287][    C2] PKRU: 55555554
[ 2983.249287][    C2] Call Trace:
[ 2983.249290][    C2]  <IRQ>
[ 2983.249292][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 2983.249294][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 2983.249297][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 2983.249299][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 2983.249301][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 2983.249304][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 2983.249306][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 2983.249308][    C2]  </IRQ>
[ 2983.249309][    C2]  <TASK>
[ 2983.249309][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 2983.249312][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 2983.249314][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 2983.249315][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 2983.249316][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 2983.249317][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 2983.249318][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 2983.249318][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 2983.249319][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 2983.249321][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 2983.249323][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 2983.249325][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 2983.249327][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 2983.249330][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 2983.249332][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 2983.249334][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2983.249336][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 2983.249338][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 2983.249341][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 2983.249343][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 2983.249345][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 2983.249348][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 2983.249350][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 2983.249351][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 2983.249354][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 2983.249356][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 2983.249358][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 2983.249360][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2983.249362][    C2]  ? release_sock (net/core/sock.c:3794)
[ 2983.249364][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 2983.249366][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 2983.249369][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2983.249371][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 2983.249373][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 2983.249375][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 2983.249377][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2983.249378][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 2983.249380][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 2983.249382][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 2983.249383][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2983.249386][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 2983.249387][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 2983.249389][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 2983.249391][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 2983.249392][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 2983.249394][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 2983.249395][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 2983.249397][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 2983.249399][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 2983.249400][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 2983.249403][    C2]  vfs_write (fs/read_write.c:686)
[ 2983.249405][    C2]  ksys_write (fs/read_write.c:739)
[ 2983.249407][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 2983.249408][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 2983.249411][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 2983.249412][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 2983.249414][    C2] RIP: 0033:0x7f814975fc5e
[ 2983.249416][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 2983.249417][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 2983.249418][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 2983.249419][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 2983.249420][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 2983.249421][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 2983.249421][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3005.875627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3005.875882][    C2] rcu: 2-....: (2053285 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=682457
| [ 3005.876146][    C2] rcu: (t=2054103 jiffies g=521497 q=44897 ncpus=4)
| [ 3005.876279][    C2] Tainted: [L]=SOFTLOCKUP
[ 3005.876280][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3005.876282][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3005.876287][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3005.876288][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3005.876291][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3005.876293][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3005.876293][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3005.876294][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3005.876295][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3005.876298][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3005.876301][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3005.876302][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3005.876303][    C2] PKRU: 55555554
[ 3005.876304][    C2] Call Trace:
[ 3005.876304][    C2]  <TASK>
[ 3005.876305][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3005.876308][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3005.876310][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3005.876313][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3005.876315][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3005.876317][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3005.876319][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3005.876322][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3005.876325][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3005.876326][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3005.876329][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3005.876331][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3005.876334][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3005.876335][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3005.876337][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3005.876339][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3005.876342][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3005.876344][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3005.876346][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3005.876348][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3005.876350][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3005.876353][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3005.876355][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3005.876357][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3005.876359][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3005.876360][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3005.876362][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3005.876364][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3005.876366][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3005.876367][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3005.876369][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3005.876371][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3005.876373][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3005.876374][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3005.876376][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3005.876377][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3005.876379][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3005.876381][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3005.876382][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3005.876384][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3005.876386][    C2]  vfs_write (fs/read_write.c:686)
[ 3005.876388][    C2]  ksys_write (fs/read_write.c:739)
[ 3005.876390][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3005.876392][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3005.876394][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3005.876396][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3005.876398][    C2] RIP: 0033:0x7f814975fc5e
[ 3005.876400][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3005.876401][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3005.876403][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3005.876403][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3005.876404][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3005.876405][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3005.876406][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3032.394762][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3032.394764][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3032.394766][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3032.394773][    C2] Tainted: [L]=SOFTLOCKUP
[ 3032.394774][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3032.394775][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3032.394778][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3032.394780][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3032.394781][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3032.394783][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3032.394783][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3032.394784][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3032.394785][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3032.394787][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3032.394791][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3032.394792][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3032.394793][    C2] PKRU: 55555554
[ 3032.394793][    C2] Call Trace:
[ 3032.394797][    C2]  <TASK>
[ 3032.394799][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3032.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3032.394804][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3032.394806][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3032.394808][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3032.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3032.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3032.394815][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3032.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3032.394820][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3032.394822][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3032.394825][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3032.394827][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3032.394829][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3032.394831][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3032.394833][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3032.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3032.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3032.394839][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3032.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3032.394843][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3032.394846][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3032.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3032.394850][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3032.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3032.394854][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3032.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3032.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3032.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3032.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3032.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3032.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3032.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3032.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3032.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3032.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3032.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3032.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3032.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3032.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3032.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 3032.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 3032.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3032.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3032.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3032.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3032.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 3032.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3032.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3032.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3032.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3032.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3032.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3032.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3060.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3060.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3060.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3060.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 3060.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3060.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3060.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3060.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3060.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3060.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3060.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3060.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3060.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3060.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3060.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3060.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3060.394788][    C2] PKRU: 55555554
[ 3060.394789][    C2] Call Trace:
[ 3060.394792][    C2]  <TASK>
[ 3060.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3060.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3060.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3060.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3060.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3060.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3060.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3060.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3060.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3060.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3060.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3060.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3060.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3060.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3060.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3060.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3060.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3060.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3060.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3060.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3060.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3060.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3060.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3060.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3060.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3060.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3060.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3060.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3060.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3060.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3060.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3060.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3060.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3060.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3060.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3060.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3060.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3060.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3060.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3060.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3060.394878][    C2]  vfs_write (fs/read_write.c:686)
[ 3060.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 3060.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3060.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3060.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3060.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3060.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 3060.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3060.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3060.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3060.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3060.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3060.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3060.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3081.553013][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3081.553138][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3081.553292][    C2] NMI backtrace for cpu 2
| [ 3081.553302][    C2] Tainted: [L]=SOFTLOCKUP
[ 3081.553303][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3081.553305][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 3081.553308][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 3081.553310][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 3081.553312][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 3081.553313][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 3081.553314][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 3081.553315][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 3081.553316][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 3081.553319][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3081.553323][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3081.553324][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3081.553325][    C2] PKRU: 55555554
[ 3081.553325][    C2] Call Trace:
[ 3081.553327][    C2]  <IRQ>
[ 3081.553330][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 3081.553332][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 3081.553335][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 3081.553337][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 3081.553339][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3081.553341][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3081.553344][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3081.553346][    C2]  </IRQ>
[ 3081.553347][    C2]  <TASK>
[ 3081.553347][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3081.553349][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3081.553351][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3081.553352][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3081.553353][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3081.553354][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3081.553355][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3081.553356][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3081.553357][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3081.553358][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3081.553361][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3081.553363][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3081.553365][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3081.553368][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3081.553370][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3081.553372][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3081.553374][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3081.553376][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3081.553379][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3081.553381][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3081.553383][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3081.553386][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3081.553388][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3081.553390][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3081.553392][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3081.553394][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3081.553397][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3081.553398][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3081.553401][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3081.553403][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3081.553404][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3081.553407][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3081.553410][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3081.553411][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3081.553413][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3081.553415][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3081.553416][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3081.553418][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3081.553420][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3081.553421][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3081.553423][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3081.553425][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3081.553427][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3081.553428][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3081.553430][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3081.553432][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3081.553434][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3081.553435][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3081.553437][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3081.553438][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3081.553441][    C2]  vfs_write (fs/read_write.c:686)
[ 3081.553443][    C2]  ksys_write (fs/read_write.c:739)
[ 3081.553445][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3081.553447][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3081.553449][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3081.553451][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3081.553452][    C2] RIP: 0033:0x7f814975fc5e
[ 3081.553454][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3081.553455][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3081.553457][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3081.553457][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3081.553458][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3081.553459][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3081.553459][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3083.879625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3083.879886][    C2] rcu: 2-....: (2131257 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=721236
| [ 3083.880102][    C2] rcu: (t=2132107 jiffies g=521497 q=46488 ncpus=4)
| [ 3083.880242][    C2] Tainted: [L]=SOFTLOCKUP
[ 3083.880243][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3083.880244][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3083.880247][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3083.880249][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3083.880251][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3083.880252][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3083.880253][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3083.880254][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3083.880255][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3083.880257][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3083.880260][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3083.880261][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3083.880262][    C2] PKRU: 55555554
[ 3083.880263][    C2] Call Trace:
[ 3083.880264][    C2]  <TASK>
[ 3083.880264][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3083.880267][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3083.880269][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3083.880271][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3083.880274][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3083.880276][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3083.880278][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3083.880280][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3083.880283][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3083.880285][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3083.880287][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3083.880290][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3083.880292][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3083.880294][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3083.880296][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3083.880298][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3083.880300][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3083.880302][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3083.880304][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3083.880306][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3083.880308][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3083.880311][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3083.880313][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3083.880315][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3083.880317][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3083.880319][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3083.880320][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3083.880322][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3083.880324][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3083.880325][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3083.880328][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3083.880329][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3083.880331][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3083.880333][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3083.880334][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3083.880336][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3083.880337][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3083.880339][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3083.880341][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3083.880342][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3083.880345][    C2]  vfs_write (fs/read_write.c:686)
[ 3083.880347][    C2]  ksys_write (fs/read_write.c:739)
[ 3083.880349][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3083.880350][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3083.880353][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3083.880354][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3083.880356][    C2] RIP: 0033:0x7f814975fc5e
[ 3083.880357][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3083.880359][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3083.880360][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3083.880361][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3083.880362][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3083.880363][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3083.880363][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3108.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3108.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3108.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3108.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 3108.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3108.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3108.394783][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3108.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3108.394786][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3108.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3108.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3108.394789][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3108.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3108.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3108.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3108.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3108.394797][    C2] PKRU: 55555554
[ 3108.394798][    C2] Call Trace:
[ 3108.394801][    C2]  <TASK>
[ 3108.394805][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3108.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3108.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3108.394812][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3108.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3108.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3108.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3108.394821][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3108.394824][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3108.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3108.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3108.394831][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3108.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3108.394835][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3108.394837][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3108.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3108.394842][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3108.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3108.394846][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3108.394848][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3108.394850][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3108.394853][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3108.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3108.394857][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3108.394859][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3108.394861][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3108.394862][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3108.394864][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3108.394866][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3108.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3108.394870][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3108.394872][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3108.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3108.394875][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3108.394877][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3108.394879][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3108.394881][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3108.394882][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3108.394884][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3108.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3108.394888][    C2]  vfs_write (fs/read_write.c:686)
[ 3108.394890][    C2]  ksys_write (fs/read_write.c:739)
[ 3108.394892][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3108.394894][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3108.394896][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3108.394898][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3108.394900][    C2] RIP: 0033:0x7f814975fc5e
[ 3108.394902][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3108.394904][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3108.394905][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3108.394906][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3108.394907][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3108.394908][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3108.394908][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3136.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3136.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3136.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3136.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 3136.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3136.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3136.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3136.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3136.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3136.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3136.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3136.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3136.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3136.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3136.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3136.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3136.394789][    C2] PKRU: 55555554
[ 3136.394789][    C2] Call Trace:
[ 3136.394792][    C2]  <TASK>
[ 3136.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3136.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3136.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3136.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3136.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3136.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3136.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3136.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3136.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3136.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3136.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3136.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3136.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3136.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3136.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3136.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3136.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3136.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3136.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3136.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3136.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3136.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3136.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3136.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3136.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3136.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3136.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3136.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3136.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3136.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3136.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3136.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3136.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3136.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3136.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3136.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3136.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3136.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3136.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3136.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3136.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 3136.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 3136.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3136.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3136.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3136.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3136.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 3136.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3136.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3136.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3136.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3136.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3136.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3136.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3161.883626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3161.883914][    C2] rcu: 2-....: (2209237 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=756850
| [ 3161.884130][    C2] rcu: (t=2210111 jiffies g=521497 q=47628 ncpus=4)
| [ 3161.884269][    C2] Tainted: [L]=SOFTLOCKUP
[ 3161.884270][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3161.884271][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3161.884275][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3161.884277][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3161.884279][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3161.884280][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3161.884281][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3161.884282][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3161.884282][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3161.884285][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3161.884288][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3161.884289][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3161.884290][    C2] PKRU: 55555554
[ 3161.884291][    C2] Call Trace:
[ 3161.884292][    C2]  <TASK>
[ 3161.884293][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3161.884296][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3161.884298][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3161.884300][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3161.884302][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3161.884304][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3161.884307][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3161.884309][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3161.884312][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3161.884313][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3161.884316][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3161.884318][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3161.884324][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3161.884326][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3161.884328][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3161.884330][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3161.884333][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3161.884335][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3161.884337][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3161.884339][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3161.884340][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3161.884343][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3161.884346][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3161.884347][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3161.884349][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3161.884351][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3161.884352][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3161.884354][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3161.884356][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3161.884357][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3161.884360][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3161.884361][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3161.884363][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3161.884365][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3161.884366][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3161.884368][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3161.884370][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3161.884371][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3161.884373][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3161.884375][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3161.884377][    C2]  vfs_write (fs/read_write.c:686)
[ 3161.884379][    C2]  ksys_write (fs/read_write.c:739)
[ 3161.884381][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3161.884383][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3161.884385][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3161.884386][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3161.884388][    C2] RIP: 0033:0x7f814975fc5e
[ 3161.884390][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3161.884391][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3161.884393][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3161.884394][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3161.884395][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3161.884395][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3161.884396][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3179.856949][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3179.857115][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3179.857220][    C2] NMI backtrace for cpu 2
| [ 3179.857230][    C2] Tainted: [L]=SOFTLOCKUP
[ 3179.857231][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3179.857232][    C2] RIP: 0010:vring_interrupt (drivers/virtio/virtio_ring.c:812 drivers/virtio/virtio_ring.c:2682 drivers/virtio/virtio_ring.c:2697)
[ 3179.857237][    C2] Code: c1 e9 03 80 3c 01 00 0f 85 f4 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 4a 70 48 8d 79 02 48 89 fe 48 c1 ee 03 0f b6 34 06 <48> 89 f8 83 e0 07 83 c0 01 40 38 f0 7c 09 40 84 f6 0f 85 34 01 00
All code
========
   0:	c1 e9 03             	shr    $0x3,%ecx
   3:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
   7:	0f 85 f4 00 00 00    	jne    0x101
   d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  14:	fc ff df 
  17:	48 8b 4a 70          	mov    0x70(%rdx),%rcx
  1b:	48 8d 79 02          	lea    0x2(%rcx),%rdi
  1f:	48 89 fe             	mov    %rdi,%rsi
  22:	48 c1 ee 03          	shr    $0x3,%rsi
  26:	0f b6 34 06          	movzbl (%rsi,%rax,1),%esi
  2a:*	48 89 f8             	mov    %rdi,%rax		<-- trapping instruction
  2d:	83 e0 07             	and    $0x7,%eax
  30:	83 c0 01             	add    $0x1,%eax
  33:	40 38 f0             	cmp    %sil,%al
  36:	7c 09                	jl     0x41
  38:	40 84 f6             	test   %sil,%sil
  3b:	0f                   	.byte 0xf
  3c:	85 34 01             	test   %esi,(%rcx,%rax,1)
	...

Code starting with the faulting instruction
===========================================
   0:	48 89 f8             	mov    %rdi,%rax
   3:	83 e0 07             	and    $0x7,%eax
   6:	83 c0 01             	add    $0x1,%eax
   9:	40 38 f0             	cmp    %sil,%al
   c:	7c 09                	jl     0x17
   e:	40 84 f6             	test   %sil,%sil
  11:	0f                   	.byte 0xf
  12:	85 34 01             	test   %esi,(%rcx,%rax,1)
	...
[ 3179.857239][    C2] RSP: 0018:ffa0000000218ea8 EFLAGS: 00000016
[ 3179.857241][    C2] RAX: dffffc0000000000 RBX: ff11000006339300 RCX: ff110000063bd000
[ 3179.857242][    C2] RDX: ff11000006339300 RSI: 0000000000000000 RDI: ff110000063bd002
[ 3179.857243][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff5b921ca
[ 3179.857244][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: ff11000005f82508
[ 3179.857245][    C2] R13: 0000000000000032 R14: dffffc0000000000 R15: ff11000005e55580
[ 3179.857248][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3179.857251][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3179.857252][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3179.857253][    C2] PKRU: 55555554
[ 3179.857253][    C2] Call Trace:
[ 3179.857257][    C2]  <IRQ>
[ 3179.857261][    C2]  vm_interrupt (drivers/virtio/virtio_mmio.c:303 (discriminator 1))
[ 3179.857263][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 3179.857264][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 3179.857267][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 3179.857269][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 3179.857272][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3179.857274][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3179.857276][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3179.857278][    C2]  </IRQ>
[ 3179.857279][    C2]  <TASK>
[ 3179.857280][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3179.857282][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3179.857284][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3179.857286][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3179.857287][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3179.857288][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3179.857288][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3179.857289][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3179.857290][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3179.857291][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3179.857294][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3179.857296][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3179.857298][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3179.857300][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3179.857302][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3179.857304][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3179.857307][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3179.857309][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3179.857312][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3179.857314][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3179.857316][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3179.857319][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3179.857321][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3179.857323][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3179.857325][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3179.857327][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3179.857329][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3179.857331][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3179.857333][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3179.857335][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3179.857337][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3179.857340][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3179.857342][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3179.857344][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3179.857346][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3179.857348][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3179.857349][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3179.857351][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3179.857353][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3179.857354][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3179.857357][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3179.857358][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3179.857360][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3179.857362][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3179.857363][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3179.857365][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3179.857367][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3179.857368][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3179.857370][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3179.857371][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3179.857374][    C2]  vfs_write (fs/read_write.c:686)
[ 3179.857376][    C2]  ksys_write (fs/read_write.c:739)
[ 3179.857378][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3179.857379][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3179.857382][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3179.857383][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3179.857385][    C2] RIP: 0033:0x7f814975fc5e
[ 3179.857387][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3179.857388][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3179.857390][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3179.857391][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3179.857391][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3179.857392][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3179.857393][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3204.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3204.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3204.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3204.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 3204.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3204.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3204.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3204.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3204.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3204.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3204.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3204.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3204.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3204.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3204.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3204.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3204.394797][    C2] PKRU: 55555554
[ 3204.394797][    C2] Call Trace:
[ 3204.394800][    C2]  <TASK>
[ 3204.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3204.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3204.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3204.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3204.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3204.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3204.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3204.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3204.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3204.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3204.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3204.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3204.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3204.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3204.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3204.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3204.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3204.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3204.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3204.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3204.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3204.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3204.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3204.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3204.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3204.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3204.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3204.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3204.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3204.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3204.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3204.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3204.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3204.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3204.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3204.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3204.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3204.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3204.394883][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3204.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3204.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 3204.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 3204.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3204.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3204.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3204.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3204.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 3204.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3204.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3204.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3204.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3204.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3204.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3204.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3232.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3232.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3232.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3232.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 3232.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3232.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3232.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3232.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3232.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3232.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3232.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3232.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3232.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3232.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3232.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3232.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3232.394787][    C2] PKRU: 55555554
[ 3232.394788][    C2] Call Trace:
[ 3232.394791][    C2]  <TASK>
[ 3232.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3232.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3232.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3232.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3232.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3232.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3232.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3232.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3232.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3232.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3232.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3232.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3232.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3232.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3232.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3232.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3232.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3232.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3232.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3232.394842][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3232.394844][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3232.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3232.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3232.394851][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3232.394853][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3232.394855][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3232.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3232.394858][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3232.394860][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3232.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3232.394864][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3232.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3232.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3232.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3232.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3232.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3232.394874][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3232.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3232.394877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3232.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3232.394881][    C2]  vfs_write (fs/read_write.c:686)
[ 3232.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 3232.394885][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3232.394887][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3232.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3232.394891][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3232.394893][    C2] RIP: 0033:0x7f814975fc5e
[ 3232.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3232.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3232.394898][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3232.394899][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3232.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3232.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3232.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3239.887626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3239.887832][    C2] rcu: 2-....: (2287208 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=795710
| [ 3239.888096][    C2] rcu: (t=2288115 jiffies g=521497 q=49223 ncpus=4)
| [ 3239.888227][    C2] Tainted: [L]=SOFTLOCKUP
[ 3239.888228][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3239.888229][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3239.888233][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3239.888234][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3239.888237][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3239.888238][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3239.888239][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3239.888240][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3239.888240][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3239.888243][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3239.888246][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3239.888247][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3239.888248][    C2] PKRU: 55555554
[ 3239.888248][    C2] Call Trace:
[ 3239.888249][    C2]  <TASK>
[ 3239.888250][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3239.888252][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3239.888255][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3239.888257][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3239.888259][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3239.888261][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3239.888264][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3239.888266][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3239.888269][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3239.888271][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3239.888273][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3239.888276][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3239.888278][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3239.888279][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3239.888282][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3239.888284][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3239.888286][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3239.888288][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3239.888290][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3239.888292][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3239.888294][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3239.888297][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3239.888299][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3239.888301][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3239.888303][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3239.888304][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3239.888306][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3239.888308][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3239.888309][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3239.888311][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3239.888313][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3239.888315][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3239.888316][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3239.888318][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3239.888320][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3239.888322][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3239.888323][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3239.888325][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3239.888327][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3239.888328][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3239.888331][    C2]  vfs_write (fs/read_write.c:686)
[ 3239.888333][    C2]  ksys_write (fs/read_write.c:739)
[ 3239.888334][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3239.888336][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3239.888338][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3239.888340][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3239.888341][    C2] RIP: 0033:0x7f814975fc5e
[ 3239.888343][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3239.888345][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3239.888346][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3239.888347][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3239.888348][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3239.888348][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3239.888349][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3264.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3264.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3264.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3264.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 3264.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3264.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3264.394773][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 3264.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 3264.394776][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3264.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3264.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3264.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3264.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3264.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3264.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3264.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3264.394788][    C2] PKRU: 55555554
[ 3264.394788][    C2] Call Trace:
[ 3264.394792][    C2]  <TASK>
[ 3264.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3264.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3264.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3264.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3264.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3264.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3264.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3264.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3264.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3264.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3264.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3264.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3264.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3264.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3264.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3264.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3264.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3264.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3264.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3264.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3264.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3264.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3264.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3264.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3264.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3264.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3264.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3264.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3264.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3264.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3264.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3264.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3264.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3264.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3264.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3264.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3264.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3264.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3264.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3264.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3264.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 3264.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 3264.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3264.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3264.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3264.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3264.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 3264.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3264.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3264.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3264.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3264.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3264.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3264.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3278.160986][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3278.161155][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3278.161279][    C2] NMI backtrace for cpu 2
| [ 3278.161289][    C2] Tainted: [L]=SOFTLOCKUP
[ 3278.161290][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3278.161291][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 3278.161295][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 3278.161297][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 3278.161299][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 3278.161300][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 3278.161301][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 3278.161302][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 3278.161303][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 3278.161306][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3278.161309][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3278.161310][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3278.161311][    C2] PKRU: 55555554
[ 3278.161311][    C2] Call Trace:
[ 3278.161314][    C2]  <IRQ>
[ 3278.161316][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 3278.161318][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 3278.161321][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 3278.161323][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 3278.161325][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3278.161327][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3278.161329][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3278.161332][    C2]  </IRQ>
[ 3278.161332][    C2]  <TASK>
[ 3278.161333][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3278.161335][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3278.161337][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3278.161338][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3278.161339][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3278.161340][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3278.161341][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3278.161342][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3278.161343][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3278.161344][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3278.161347][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3278.161348][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3278.161351][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3278.161353][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3278.161355][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3278.161357][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3278.161359][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3278.161362][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3278.161365][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3278.161366][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3278.161369][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3278.161371][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3278.161373][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3278.161375][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3278.161377][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3278.161379][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3278.161382][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3278.161384][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3278.161386][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3278.161388][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3278.161389][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3278.161392][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3278.161394][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3278.161396][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3278.161398][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3278.161400][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3278.161401][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3278.161403][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3278.161405][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3278.161406][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3278.161408][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3278.161410][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3278.161412][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3278.161413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3278.161415][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3278.161417][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3278.161418][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3278.161420][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3278.161422][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3278.161423][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3278.161426][    C2]  vfs_write (fs/read_write.c:686)
[ 3278.161428][    C2]  ksys_write (fs/read_write.c:739)
[ 3278.161429][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3278.161431][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3278.161433][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3278.161435][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3278.161437][    C2] RIP: 0033:0x7f814975fc5e
[ 3278.161439][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3278.161439][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3278.161441][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3278.161442][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3278.161442][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3278.161443][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3278.161444][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3304.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3304.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3304.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3304.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 3304.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3304.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3304.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3304.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3304.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3304.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3304.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3304.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3304.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3304.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3304.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3304.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3304.394796][    C2] PKRU: 55555554
[ 3304.394797][    C2] Call Trace:
[ 3304.394800][    C2]  <TASK>
[ 3304.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3304.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3304.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3304.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3304.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3304.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3304.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3304.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3304.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3304.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3304.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3304.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3304.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3304.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3304.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3304.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3304.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3304.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3304.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3304.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3304.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3304.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3304.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3304.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3304.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3304.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3304.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3304.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3304.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3304.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3304.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3304.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3304.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3304.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3304.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3304.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3304.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3304.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3304.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3304.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3304.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 3304.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 3304.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3304.394893][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3304.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3304.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3304.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 3304.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3304.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3304.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3304.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3304.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3304.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3304.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3317.891626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3317.891901][    C2] rcu: 2-....: (2365180 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=831038
| [ 3317.892133][    C2] rcu: (t=2366119 jiffies g=521497 q=50814 ncpus=4)
| [ 3317.892268][    C2] Tainted: [L]=SOFTLOCKUP
[ 3317.892269][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3317.892270][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3317.892274][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3317.892275][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3317.892277][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3317.892279][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3317.892280][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3317.892281][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3317.892281][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3317.892284][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3317.892287][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3317.892288][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3317.892289][    C2] PKRU: 55555554
[ 3317.892289][    C2] Call Trace:
[ 3317.892290][    C2]  <TASK>
[ 3317.892291][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3317.892294][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3317.892296][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3317.892299][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3317.892301][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3317.892303][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3317.892305][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3317.892308][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3317.892311][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3317.892313][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3317.892315][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3317.892318][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3317.892320][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3317.892322][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3317.892324][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3317.892326][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3317.892328][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3317.892330][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3317.892332][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3317.892334][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3317.892336][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3317.892339][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3317.892341][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3317.892343][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3317.892345][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3317.892346][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3317.892348][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3317.892350][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3317.892351][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3317.892353][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3317.892355][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3317.892357][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3317.892358][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3317.892360][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3317.892362][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3317.892363][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3317.892365][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3317.892367][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3317.892368][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3317.892370][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3317.892372][    C2]  vfs_write (fs/read_write.c:686)
[ 3317.892374][    C2]  ksys_write (fs/read_write.c:739)
[ 3317.892376][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3317.892378][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3317.892380][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3317.892382][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3317.892384][    C2] RIP: 0033:0x7f814975fc5e
[ 3317.892385][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3317.892387][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3317.892388][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3317.892389][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3317.892389][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3317.892390][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3317.892391][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3344.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3344.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3344.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3344.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 3344.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3344.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3344.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3344.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3344.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3344.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3344.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3344.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3344.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3344.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3344.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3344.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3344.394788][    C2] PKRU: 55555554
[ 3344.394788][    C2] Call Trace:
[ 3344.394791][    C2]  <TASK>
[ 3344.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3344.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3344.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3344.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3344.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3344.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3344.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3344.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3344.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3344.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3344.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3344.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3344.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3344.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3344.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3344.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3344.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3344.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3344.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3344.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3344.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3344.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3344.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3344.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3344.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3344.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3344.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3344.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3344.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3344.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3344.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3344.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3344.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3344.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3344.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3344.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3344.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3344.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3344.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3344.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3344.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 3344.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 3344.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3344.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3344.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3344.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3344.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 3344.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3344.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3344.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3344.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3344.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3344.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3344.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3372.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3372.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3372.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3372.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 3372.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3372.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3372.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3372.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3372.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3372.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3372.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3372.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3372.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3372.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3372.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3372.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3372.394788][    C2] PKRU: 55555554
[ 3372.394789][    C2] Call Trace:
[ 3372.394792][    C2]  <TASK>
[ 3372.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3372.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3372.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3372.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3372.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3372.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3372.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3372.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3372.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3372.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3372.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3372.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3372.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3372.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3372.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3372.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3372.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3372.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3372.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3372.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3372.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3372.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3372.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3372.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3372.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3372.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3372.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3372.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3372.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3372.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3372.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3372.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3372.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3372.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3372.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3372.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3372.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3372.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3372.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3372.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3372.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 3372.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 3372.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3372.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3372.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3372.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3372.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 3372.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3372.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3372.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3372.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3372.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3372.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3372.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3376.464999][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3376.465135][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3376.465241][    C2] NMI backtrace for cpu 2
| [ 3376.465250][    C2] Tainted: [L]=SOFTLOCKUP
[ 3376.465250][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3376.465252][    C2] RIP: 0010:native_apic_msr_read (./arch/x86/include/asm/msr.h:75 ./arch/x86/include/asm/msr.h:108 ./arch/x86/include/asm/apic.h:227)
[ 3376.465256][    C2] Code: 08 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 ff ff ff ff 81 ff e0 00 00 00 74 15 c1 ef 04 8d 8f 00 08 00 00 0f 32 <48> c1 e2 20 48 09 d0 66 90 c3 c3 48 83 ec 08 48 89 c6 31 d2 89 cf
All code
========
   0:	08 00                	or     %al,(%rax)
   2:	00 66 66             	add    %ah,0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	f3 0f 1e fa          	endbr64
  12:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  17:	81 ff e0 00 00 00    	cmp    $0xe0,%edi
  1d:	74 15                	je     0x34
  1f:	c1 ef 04             	shr    $0x4,%edi
  22:	8d 8f 00 08 00 00    	lea    0x800(%rdi),%ecx
  28:	0f 32                	rdmsr
  2a:*	48 c1 e2 20          	shl    $0x20,%rdx		<-- trapping instruction
  2e:	48 09 d0             	or     %rdx,%rax
  31:	66 90                	xchg   %ax,%ax
  33:	c3                   	ret
  34:	c3                   	ret
  35:	48 83 ec 08          	sub    $0x8,%rsp
  39:	48 89 c6             	mov    %rax,%rsi
  3c:	31 d2                	xor    %edx,%edx
  3e:	89 cf                	mov    %ecx,%edi

Code starting with the faulting instruction
===========================================
   0:	48 c1 e2 20          	shl    $0x20,%rdx
   4:	48 09 d0             	or     %rdx,%rax
   7:	66 90                	xchg   %ax,%ax
   9:	c3                   	ret
   a:	c3                   	ret
   b:	48 83 ec 08          	sub    $0x8,%rsp
   f:	48 89 c6             	mov    %rax,%rsi
  12:	31 d2                	xor    %edx,%edx
  14:	89 cf                	mov    %ecx,%edi
[ 3376.465258][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000012
[ 3376.465260][    C2] RAX: 0000000000000001 RBX: ff11000002980428 RCX: 0000000000000819
[ 3376.465261][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000019
[ 3376.465262][    C2] RBP: ff11000002980438 R08: ffffffffaa2da398 R09: fff3fc00000431df
[ 3376.465263][    C2] R10: 0000000000000003 R11: 1fe2200006a6666a R12: ff110000027b3040
[ 3376.465264][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 3376.465266][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3376.465269][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3376.465270][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3376.465271][    C2] PKRU: 55555554
[ 3376.465271][    C2] Call Trace:
[ 3376.465274][    C2]  <IRQ>
[ 3376.465275][    C2]  ioapic_ack_level (./arch/x86/include/asm/apic.h:404 arch/x86/kernel/apic/io_apic.c:1700)
[ 3376.465279][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 3376.465282][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3376.465284][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3376.465286][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3376.465288][    C2]  </IRQ>
[ 3376.465289][    C2]  <TASK>
[ 3376.465289][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3376.465291][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:182 (discriminator 1) mm/kasan/generic.c:200 (discriminator 1))
[ 3376.465295][    C2] Code: 00 00 00 f3 0f 1e fa 48 89 f2 be f8 00 00 00 e9 9f a1 ab 01 0f 1f 40 00 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 48 85 f6 <0f> 84 9a 01 00 00 48 89 f8 41 57 49 89 c8 48 01 f0 41 56 53 0f 82
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 f3                	add    %dh,%bl
   4:	0f 1e fa             	nop    %edx
   7:	48 89 f2             	mov    %rsi,%rdx
   a:	be f8 00 00 00       	mov    $0xf8,%esi
   f:	e9 9f a1 ab 01       	jmp    0x1aba1b3
  14:	0f 1f 40 00          	nopl   0x0(%rax)
  18:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  1f:	00 00 00 00 
  23:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  27:	48 85 f6             	test   %rsi,%rsi
  2a:*	0f 84 9a 01 00 00    	je     0x1ca		<-- trapping instruction
  30:	48 89 f8             	mov    %rdi,%rax
  33:	41 57                	push   %r15
  35:	49 89 c8             	mov    %rcx,%r8
  38:	48 01 f0             	add    %rsi,%rax
  3b:	41 56                	push   %r14
  3d:	53                   	push   %rbx
  3e:	0f                   	.byte 0xf
  3f:	82                   	.byte 0x82

Code starting with the faulting instruction
===========================================
   0:	0f 84 9a 01 00 00    	je     0x1a0
   6:	48 89 f8             	mov    %rdi,%rax
   9:	41 57                	push   %r15
   b:	49 89 c8             	mov    %rcx,%r8
   e:	48 01 f0             	add    %rsi,%rax
  11:	41 56                	push   %r14
  13:	53                   	push   %rbx
  14:	0f                   	.byte 0xf
  15:	82                   	.byte 0x82
[ 3376.465296][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 3376.465297][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: ffffffffac5390f1
[ 3376.465298][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3376.465299][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3376.465299][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3376.465300][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3376.465301][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3376.465304][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3376.465306][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3376.465308][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3376.465310][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3376.465313][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3376.465315][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3376.465317][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3376.465319][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3376.465321][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3376.465324][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3376.465327][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3376.465328][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3376.465331][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3376.465333][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3376.465336][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3376.465337][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3376.465340][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3376.465342][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3376.465344][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3376.465346][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3376.465348][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3376.465350][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3376.465352][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3376.465355][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3376.465357][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3376.465359][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3376.465361][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3376.465363][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3376.465364][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3376.465366][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3376.465368][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3376.465369][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3376.465372][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3376.465373][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3376.465375][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3376.465377][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3376.465378][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3376.465380][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3376.465382][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3376.465384][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3376.465385][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3376.465387][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3376.465389][    C2]  vfs_write (fs/read_write.c:686)
[ 3376.465391][    C2]  ksys_write (fs/read_write.c:739)
[ 3376.465393][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3376.465395][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3376.465397][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3376.465399][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3376.465400][    C2] RIP: 0033:0x7f814975fc5e
[ 3376.465402][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3376.465403][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3376.465405][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3376.465405][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3376.465406][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3376.465407][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3376.465408][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3395.895626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3395.895881][    C2] rcu: 2-....: (2443151 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=861695
| [ 3395.896099][    C2] rcu: (t=2444123 jiffies g=521497 q=52405 ncpus=4)
| [ 3395.896283][    C2] Tainted: [L]=SOFTLOCKUP
[ 3395.896284][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3395.896285][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3395.896290][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3395.896291][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3395.896294][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3395.896295][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3395.896296][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3395.896297][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3395.896298][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3395.896300][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3395.896304][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3395.896305][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3395.896305][    C2] PKRU: 55555554
[ 3395.896306][    C2] Call Trace:
[ 3395.896307][    C2]  <TASK>
[ 3395.896308][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3395.896311][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3395.896313][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3395.896316][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3395.896318][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3395.896320][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3395.896322][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3395.896324][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3395.896328][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3395.896329][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3395.896332][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3395.896335][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3395.896337][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3395.896339][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3395.896341][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3395.896343][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3395.896345][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3395.896347][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3395.896350][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3395.896352][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3395.896353][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3395.896356][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3395.896358][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3395.896360][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3395.896362][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3395.896364][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3395.896365][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3395.896367][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3395.896369][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3395.896370][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3395.896373][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3395.896375][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3395.896376][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3395.896378][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3395.896380][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3395.896381][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3395.896383][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3395.896385][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3395.896386][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3395.896388][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3395.896390][    C2]  vfs_write (fs/read_write.c:686)
[ 3395.896392][    C2]  ksys_write (fs/read_write.c:739)
[ 3395.896394][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3395.896396][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3395.896398][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3395.896400][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3395.896401][    C2] RIP: 0033:0x7f814975fc5e
[ 3395.896403][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3395.896404][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3395.896406][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3395.896407][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3395.896408][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3395.896408][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3395.896409][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3420.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3420.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3420.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3420.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 3420.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3420.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3420.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3420.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3420.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3420.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3420.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3420.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3420.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3420.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3420.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3420.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3420.394790][    C2] PKRU: 55555554
[ 3420.394791][    C2] Call Trace:
[ 3420.394794][    C2]  <TASK>
[ 3420.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3420.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3420.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3420.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3420.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3420.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3420.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3420.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3420.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3420.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3420.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3420.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3420.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3420.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3420.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3420.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3420.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3420.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3420.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3420.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3420.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3420.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3420.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3420.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3420.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3420.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3420.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3420.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3420.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3420.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3420.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3420.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3420.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3420.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3420.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3420.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3420.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3420.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3420.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3420.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3420.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 3420.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 3420.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3420.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3420.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3420.394891][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3420.394893][    C2] RIP: 0033:0x7f814975fc5e
[ 3420.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3420.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3420.394898][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3420.394899][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3420.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3420.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3420.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3448.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3448.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3448.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3448.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 3448.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3448.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3448.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3448.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3448.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3448.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3448.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3448.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3448.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3448.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3448.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3448.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3448.394786][    C2] PKRU: 55555554
[ 3448.394787][    C2] Call Trace:
[ 3448.394789][    C2]  <TASK>
[ 3448.394792][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3448.394794][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3448.394797][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3448.394799][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3448.394801][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3448.394803][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3448.394805][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3448.394808][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3448.394811][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3448.394812][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3448.394815][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3448.394817][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3448.394820][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3448.394821][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3448.394824][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3448.394826][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3448.394828][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3448.394830][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3448.394832][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3448.394834][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3448.394836][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3448.394839][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3448.394841][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3448.394843][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3448.394845][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3448.394847][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3448.394848][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3448.394850][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3448.394852][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3448.394853][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3448.394856][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3448.394857][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3448.394859][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3448.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3448.394862][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3448.394864][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3448.394866][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3448.394868][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3448.394869][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3448.394871][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3448.394873][    C2]  vfs_write (fs/read_write.c:686)
[ 3448.394875][    C2]  ksys_write (fs/read_write.c:739)
[ 3448.394877][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3448.394879][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3448.394881][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3448.394883][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3448.394885][    C2] RIP: 0033:0x7f814975fc5e
[ 3448.394887][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3448.394889][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3448.394890][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3448.394891][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3448.394892][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3448.394892][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3448.394893][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3473.899626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3473.899850][    C2] rcu: 2-....: (2521131 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=900142
| [ 3473.900069][    C2] rcu: (t=2522127 jiffies g=521497 q=53545 ncpus=4)
| [ 3473.900248][    C2] Tainted: [L]=SOFTLOCKUP
[ 3473.900249][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3473.900250][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3473.900254][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3473.900256][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3473.900258][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3473.900259][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3473.900260][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3473.900260][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3473.900261][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3473.900264][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3473.900267][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3473.900268][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3473.900269][    C2] PKRU: 55555554
[ 3473.900270][    C2] Call Trace:
[ 3473.900271][    C2]  <TASK>
[ 3473.900272][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3473.900274][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3473.900276][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3473.900279][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3473.900281][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3473.900283][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3473.900285][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3473.900288][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3473.900291][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3473.900292][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3473.900295][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3473.900297][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3473.900300][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3473.900301][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3473.900303][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3473.900306][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3473.900308][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3473.900310][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3473.900312][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3473.900314][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3473.900316][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3473.900319][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3473.900321][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3473.900323][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3473.900325][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3473.900327][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3473.900328][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3473.900330][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3473.900332][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3473.900333][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3473.900336][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3473.900342][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3473.900343][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3473.900345][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3473.900347][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3473.900348][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3473.900350][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3473.900352][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3473.900353][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3473.900355][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3473.900358][    C2]  vfs_write (fs/read_write.c:686)
[ 3473.900360][    C2]  ksys_write (fs/read_write.c:739)
[ 3473.900361][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3473.900363][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3473.900365][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3473.900367][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3473.900369][    C2] RIP: 0033:0x7f814975fc5e
[ 3473.900371][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3473.900372][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3473.900374][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3473.900374][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3473.900375][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3473.900376][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3473.900377][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3474.769007][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3474.769129][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3474.769235][    C2] NMI backtrace for cpu 2
| [ 3474.769243][    C2] Tainted: [L]=SOFTLOCKUP
[ 3474.769243][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3474.769244][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 3474.769248][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 3474.769249][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 3474.769251][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 3474.769253][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 3474.769254][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 3474.769254][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 3474.769255][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 3474.769258][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3474.769261][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3474.769262][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3474.769263][    C2] PKRU: 55555554
[ 3474.769263][    C2] Call Trace:
[ 3474.769265][    C2]  <IRQ>
[ 3474.769265][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 3474.769269][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 3474.769272][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3474.769274][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3474.769276][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3474.769278][    C2]  </IRQ>
[ 3474.769279][    C2]  <TASK>
[ 3474.769280][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3474.769281][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3474.769283][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3474.769284][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3474.769285][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3474.769286][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3474.769287][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3474.769288][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3474.769288][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3474.769290][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3474.769292][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3474.769294][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3474.769296][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3474.769298][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3474.769300][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3474.769302][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3474.769305][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3474.769307][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3474.769310][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3474.769312][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3474.769314][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3474.769317][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3474.769319][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3474.769321][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3474.769323][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3474.769325][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3474.769327][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3474.769329][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3474.769331][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3474.769333][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3474.769335][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3474.769338][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3474.769340][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3474.769342][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3474.769352][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3474.769353][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3474.769355][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3474.769357][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3474.769358][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3474.769360][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3474.769362][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3474.769364][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3474.769365][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3474.769367][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3474.769369][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3474.769370][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3474.769372][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3474.769374][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3474.769375][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3474.769377][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3474.769379][    C2]  vfs_write (fs/read_write.c:686)
[ 3474.769381][    C2]  ksys_write (fs/read_write.c:739)
[ 3474.769383][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3474.769385][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3474.769387][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3474.769389][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3474.769390][    C2] RIP: 0033:0x7f814975fc5e
[ 3474.769392][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3474.769393][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3474.769394][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3474.769395][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3474.769396][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3474.769397][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3474.769397][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3500.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3500.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3500.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3500.394778][    C2] Tainted: [L]=SOFTLOCKUP
[ 3500.394779][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3500.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3500.394783][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3500.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3500.394786][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3500.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3500.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3500.394789][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3500.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3500.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3500.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3500.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3500.394797][    C2] PKRU: 55555554
[ 3500.394798][    C2] Call Trace:
[ 3500.394801][    C2]  <TASK>
[ 3500.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3500.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3500.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3500.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3500.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3500.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3500.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3500.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3500.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3500.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3500.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3500.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3500.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3500.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3500.394837][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3500.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3500.394842][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3500.394844][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3500.394846][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3500.394848][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3500.394850][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3500.394853][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3500.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3500.394857][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3500.394859][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3500.394861][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3500.394862][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3500.394864][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3500.394866][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3500.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3500.394870][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3500.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3500.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3500.394875][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3500.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3500.394878][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3500.394880][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3500.394882][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3500.394883][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3500.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3500.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 3500.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 3500.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3500.394893][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3500.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3500.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3500.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 3500.394902][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3500.394903][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3500.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3500.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3500.394906][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3500.394907][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3500.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3528.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3528.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3528.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3528.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 3528.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3528.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3528.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3528.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3528.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3528.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3528.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3528.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3528.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3528.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3528.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3528.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3528.394789][    C2] PKRU: 55555554
[ 3528.394790][    C2] Call Trace:
[ 3528.394793][    C2]  <TASK>
[ 3528.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3528.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3528.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3528.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3528.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3528.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3528.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3528.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3528.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3528.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3528.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3528.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3528.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3528.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3528.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3528.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3528.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3528.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3528.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3528.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3528.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3528.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3528.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3528.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3528.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3528.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3528.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3528.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3528.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3528.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3528.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3528.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3528.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3528.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3528.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3528.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3528.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3528.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3528.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3528.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3528.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 3528.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 3528.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3528.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3528.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3528.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3528.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 3528.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3528.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3528.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3528.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3528.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3528.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3528.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3551.903625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3551.903927][    C2] rcu: 2-....: (2599102 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=934112
| [ 3551.904146][    C2] rcu: (t=2600131 jiffies g=521497 q=55128 ncpus=4)
| [ 3551.904327][    C2] Tainted: [L]=SOFTLOCKUP
[ 3551.904328][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3551.904329][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3551.904333][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3551.904335][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3551.904337][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3551.904338][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3551.904339][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3551.904340][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3551.904341][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3551.904343][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3551.904346][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3551.904348][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3551.904349][    C2] PKRU: 55555554
[ 3551.904349][    C2] Call Trace:
[ 3551.904350][    C2]  <TASK>
[ 3551.904351][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3551.904354][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3551.904356][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3551.904358][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3551.904360][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3551.904362][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3551.904365][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3551.904367][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3551.904370][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3551.904372][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3551.904374][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3551.904377][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3551.904379][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3551.904380][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3551.904383][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3551.904385][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3551.904387][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3551.904389][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3551.904391][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3551.904393][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3551.904395][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3551.904398][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3551.904400][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3551.904402][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3551.904404][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3551.904405][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3551.904407][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3551.904409][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3551.904410][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3551.904412][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3551.904414][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3551.904416][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3551.904417][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3551.904419][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3551.904421][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3551.904422][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3551.904424][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3551.904426][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3551.904427][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3551.904429][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3551.904431][    C2]  vfs_write (fs/read_write.c:686)
[ 3551.904433][    C2]  ksys_write (fs/read_write.c:739)
[ 3551.904435][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3551.904437][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3551.904439][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3551.904440][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3551.904442][    C2] RIP: 0033:0x7f814975fc5e
[ 3551.904444][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3551.904445][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3551.904447][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3551.904448][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3551.904448][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3551.904449][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3551.904450][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3573.073062][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3573.073191][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3573.073302][    C2] NMI backtrace for cpu 2
| [ 3573.073312][    C2] Tainted: [L]=SOFTLOCKUP
[ 3573.073313][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3573.073314][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 3573.073318][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 3573.073320][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 3573.073322][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 3573.073324][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 3573.073325][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 3573.073325][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 3573.073326][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 3573.073329][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3573.073333][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3573.073334][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3573.073334][    C2] PKRU: 55555554
[ 3573.073335][    C2] Call Trace:
[ 3573.073337][    C2]  <IRQ>
[ 3573.073340][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 3573.073342][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 3573.073345][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 3573.073347][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 3573.073350][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3573.073352][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3573.073354][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3573.073356][    C2]  </IRQ>
[ 3573.073357][    C2]  <TASK>
[ 3573.073358][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3573.073360][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3573.073362][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3573.073363][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3573.073364][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3573.073365][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3573.073366][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3573.073366][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3573.073367][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3573.073368][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3573.073371][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3573.073373][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3573.073375][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3573.073378][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3573.073380][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3573.073381][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3573.073384][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3573.073386][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3573.073389][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3573.073391][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3573.073393][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3573.073396][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3573.073398][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3573.073400][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3573.073402][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3573.073404][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3573.073406][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3573.073408][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3573.073410][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3573.073412][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3573.073414][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3573.073417][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3573.073419][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3573.073421][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3573.073423][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3573.073425][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3573.073426][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3573.073428][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3573.073430][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3573.073431][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3573.073434][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3573.073435][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3573.073437][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3573.073438][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3573.073440][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3573.073442][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3573.073443][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3573.073445][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3573.073447][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3573.073448][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3573.073451][    C2]  vfs_write (fs/read_write.c:686)
[ 3573.073453][    C2]  ksys_write (fs/read_write.c:739)
[ 3573.073454][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3573.073456][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3573.073458][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3573.073460][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3573.073461][    C2] RIP: 0033:0x7f814975fc5e
[ 3573.073464][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3573.073465][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3573.073466][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3573.073467][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3573.073468][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3573.073468][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3573.073469][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3600.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3600.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3600.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3600.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 3600.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3600.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3600.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3600.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3600.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3600.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3600.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3600.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3600.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3600.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3600.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3600.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3600.394796][    C2] PKRU: 55555554
[ 3600.394797][    C2] Call Trace:
[ 3600.394800][    C2]  <TASK>
[ 3600.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3600.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3600.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3600.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3600.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3600.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3600.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3600.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3600.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3600.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3600.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3600.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3600.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3600.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3600.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3600.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3600.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3600.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3600.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3600.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3600.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3600.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3600.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3600.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3600.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3600.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3600.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3600.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3600.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3600.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3600.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3600.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3600.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3600.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3600.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3600.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3600.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3600.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3600.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3600.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3600.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 3600.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 3600.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3600.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3600.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3600.394896][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3600.394898][    C2] RIP: 0033:0x7f814975fc5e
[ 3600.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3600.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3600.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3600.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3600.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3600.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3600.394906][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3628.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3628.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3628.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3628.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 3628.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3628.394774][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3628.394777][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3628.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3628.394780][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3628.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3628.394782][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3628.394783][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3628.394784][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3628.394786][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3628.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3628.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3628.394791][    C2] PKRU: 55555554
[ 3628.394792][    C2] Call Trace:
[ 3628.394794][    C2]  <TASK>
[ 3628.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3628.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3628.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3628.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3628.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3628.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3628.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3628.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3628.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3628.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3628.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3628.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3628.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3628.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3628.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3628.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3628.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3628.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3628.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3628.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3628.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3628.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3628.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3628.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3628.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3628.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3628.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3628.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3628.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3628.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3628.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3628.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3628.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3628.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3628.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3628.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3628.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3628.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3628.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3628.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3628.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 3628.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 3628.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3628.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3628.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3628.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3628.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 3628.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3628.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3628.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3628.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3628.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3628.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3628.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3629.907624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3629.907818][    C2] rcu: 2-....: (2677073 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=963705
| [ 3629.908080][    C2] rcu: (t=2678135 jiffies g=521497 q=58888 ncpus=4)
| [ 3629.908218][    C2] Tainted: [L]=SOFTLOCKUP
[ 3629.908219][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3629.908219][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3629.908223][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3629.908224][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3629.908226][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3629.908227][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3629.908229][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3629.908229][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3629.908230][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3629.908232][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3629.908235][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3629.908236][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3629.908236][    C2] PKRU: 55555554
[ 3629.908237][    C2] Call Trace:
[ 3629.908238][    C2]  <TASK>
[ 3629.908239][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3629.908241][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3629.908244][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3629.908246][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3629.908248][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3629.908250][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3629.908252][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3629.908255][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3629.908258][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3629.908260][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3629.908262][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3629.908265][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3629.908267][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3629.908269][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3629.908271][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3629.908273][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3629.908275][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3629.908277][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3629.908279][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3629.908281][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3629.908283][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3629.908286][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3629.908288][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3629.908290][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3629.908292][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3629.908294][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3629.908295][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3629.908297][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3629.908299][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3629.908300][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3629.908302][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3629.908304][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3629.908306][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3629.908307][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3629.908309][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3629.908311][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3629.908312][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3629.908314][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3629.908316][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3629.908317][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3629.908320][    C2]  vfs_write (fs/read_write.c:686)
[ 3629.908322][    C2]  ksys_write (fs/read_write.c:739)
[ 3629.908323][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3629.908325][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3629.908327][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3629.908329][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3629.908330][    C2] RIP: 0033:0x7f814975fc5e
[ 3629.908332][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3629.908333][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3629.908335][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3629.908336][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3629.908337][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3629.908337][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3629.908338][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3656.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3656.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3656.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3656.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 3656.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3656.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3656.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3656.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3656.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3656.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3656.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3656.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3656.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3656.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3656.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3656.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3656.394790][    C2] PKRU: 55555554
[ 3656.394791][    C2] Call Trace:
[ 3656.394794][    C2]  <TASK>
[ 3656.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3656.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3656.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3656.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3656.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3656.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3656.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3656.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3656.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3656.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3656.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3656.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3656.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3656.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3656.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3656.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3656.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3656.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3656.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3656.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3656.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3656.394848][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3656.394850][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3656.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3656.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3656.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3656.394857][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3656.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3656.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3656.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3656.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3656.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3656.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3656.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3656.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3656.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3656.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3656.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3656.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3656.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3656.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 3656.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 3656.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3656.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3656.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3656.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3656.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 3656.394898][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3656.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3656.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3656.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3656.394902][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3656.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3656.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3671.376013][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3671.376136][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3671.376277][    C2] NMI backtrace for cpu 2
| [ 3671.376287][    C2] Tainted: [L]=SOFTLOCKUP
[ 3671.376288][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3671.376290][    C2] RIP: 0010:native_apic_msr_read (./arch/x86/include/asm/msr.h:75 ./arch/x86/include/asm/msr.h:108 ./arch/x86/include/asm/apic.h:227)
[ 3671.376294][    C2] Code: 08 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 ff ff ff ff 81 ff e0 00 00 00 74 15 c1 ef 04 8d 8f 00 08 00 00 0f 32 <48> c1 e2 20 48 09 d0 66 90 c3 c3 48 83 ec 08 48 89 c6 31 d2 89 cf
All code
========
   0:	08 00                	or     %al,(%rax)
   2:	00 66 66             	add    %ah,0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	f3 0f 1e fa          	endbr64
  12:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  17:	81 ff e0 00 00 00    	cmp    $0xe0,%edi
  1d:	74 15                	je     0x34
  1f:	c1 ef 04             	shr    $0x4,%edi
  22:	8d 8f 00 08 00 00    	lea    0x800(%rdi),%ecx
  28:	0f 32                	rdmsr
  2a:*	48 c1 e2 20          	shl    $0x20,%rdx		<-- trapping instruction
  2e:	48 09 d0             	or     %rdx,%rax
  31:	66 90                	xchg   %ax,%ax
  33:	c3                   	ret
  34:	c3                   	ret
  35:	48 83 ec 08          	sub    $0x8,%rsp
  39:	48 89 c6             	mov    %rax,%rsi
  3c:	31 d2                	xor    %edx,%edx
  3e:	89 cf                	mov    %ecx,%edi

Code starting with the faulting instruction
===========================================
   0:	48 c1 e2 20          	shl    $0x20,%rdx
   4:	48 09 d0             	or     %rdx,%rax
   7:	66 90                	xchg   %ax,%ax
   9:	c3                   	ret
   a:	c3                   	ret
   b:	48 83 ec 08          	sub    $0x8,%rsp
   f:	48 89 c6             	mov    %rax,%rsi
  12:	31 d2                	xor    %edx,%edx
  14:	89 cf                	mov    %ecx,%edi
[ 3671.376296][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000012
[ 3671.376298][    C2] RAX: 0000000000000001 RBX: ff11000002980428 RCX: 0000000000000819
[ 3671.376299][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000019
[ 3671.376300][    C2] RBP: ff11000002980438 R08: ffffffffaa2da398 R09: fff3fc00000431df
[ 3671.376301][    C2] R10: 0000000000000003 R11: 1fe2200006a6666a R12: ff110000027b3040
[ 3671.376302][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 3671.376305][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3671.376307][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3671.376308][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3671.376309][    C2] PKRU: 55555554
[ 3671.376310][    C2] Call Trace:
[ 3671.376313][    C2]  <IRQ>
[ 3671.376315][    C2]  ioapic_ack_level (./arch/x86/include/asm/apic.h:404 arch/x86/kernel/apic/io_apic.c:1700)
[ 3671.376320][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 3671.376323][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3671.376325][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3671.376327][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3671.376330][    C2]  </IRQ>
[ 3671.376331][    C2]  <TASK>
[ 3671.376331][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3671.376334][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3671.376336][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3671.376337][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3671.376338][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3671.376339][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3671.376340][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3671.376340][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3671.376341][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3671.376343][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3671.376345][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3671.376347][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3671.376350][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3671.376352][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3671.376354][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3671.376356][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3671.376358][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3671.376361][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3671.376364][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3671.376365][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3671.376368][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3671.376371][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3671.376373][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3671.376374][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3671.376376][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3671.376378][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3671.376381][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3671.376383][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3671.376385][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3671.376387][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3671.376389][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3671.376392][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3671.376394][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3671.376396][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3671.376398][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3671.376400][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3671.376401][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3671.376403][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3671.376405][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3671.376406][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3671.376409][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3671.376410][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3671.376412][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3671.376414][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3671.376415][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3671.376417][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3671.376419][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3671.376421][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3671.376422][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3671.376424][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3671.376426][    C2]  vfs_write (fs/read_write.c:686)
[ 3671.376428][    C2]  ksys_write (fs/read_write.c:739)
[ 3671.376430][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3671.376432][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3671.376434][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3671.376436][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3671.376437][    C2] RIP: 0033:0x7f814975fc5e
[ 3671.376440][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3671.376441][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3671.376442][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3671.376443][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3671.376444][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3671.376445][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3671.376445][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3696.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3696.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3696.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3696.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 3696.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3696.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3696.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3696.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3696.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3696.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3696.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3696.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3696.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3696.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3696.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3696.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3696.394796][    C2] PKRU: 55555554
[ 3696.394797][    C2] Call Trace:
[ 3696.394800][    C2]  <TASK>
[ 3696.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3696.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3696.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3696.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3696.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3696.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3696.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3696.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3696.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3696.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3696.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3696.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3696.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3696.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3696.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3696.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3696.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3696.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3696.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3696.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3696.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3696.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3696.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3696.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3696.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3696.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3696.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3696.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3696.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3696.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3696.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3696.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3696.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3696.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3696.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3696.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3696.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3696.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3696.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3696.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3696.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 3696.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 3696.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3696.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3696.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3696.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3696.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 3696.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3696.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3696.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3696.394902][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3696.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3696.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3696.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3707.911625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3707.911843][    C2] rcu: 2-....: (2755044 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=996146
| [ 3707.912061][    C2] rcu: (t=2756139 jiffies g=521497 q=60472 ncpus=4)
| [ 3707.912242][    C2] Tainted: [L]=SOFTLOCKUP
[ 3707.912243][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3707.912244][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3707.912248][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3707.912250][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3707.912252][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3707.912253][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3707.912254][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3707.912255][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3707.912256][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3707.912258][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3707.912261][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3707.912262][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3707.912263][    C2] PKRU: 55555554
[ 3707.912263][    C2] Call Trace:
[ 3707.912264][    C2]  <TASK>
[ 3707.912265][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3707.912268][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3707.912270][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3707.912272][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3707.912274][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3707.912276][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3707.912279][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3707.912281][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3707.912284][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3707.912286][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3707.912288][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3707.912291][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3707.912293][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3707.912294][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3707.912297][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3707.912298][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3707.912301][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3707.912303][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3707.912305][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3707.912307][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3707.912309][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3707.912312][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3707.912314][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3707.912316][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3707.912318][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3707.912319][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3707.912320][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3707.912323][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3707.912324][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3707.912330][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3707.912333][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3707.912334][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3707.912336][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3707.912338][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3707.912339][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3707.912341][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3707.912342][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3707.912344][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3707.912346][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3707.912347][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3707.912350][    C2]  vfs_write (fs/read_write.c:686)
[ 3707.912352][    C2]  ksys_write (fs/read_write.c:739)
[ 3707.912354][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3707.912355][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3707.912358][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3707.912359][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3707.912361][    C2] RIP: 0033:0x7f814975fc5e
[ 3707.912363][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3707.912364][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3707.912365][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3707.912366][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3707.912367][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3707.912368][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3707.912369][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3732.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3732.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3732.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3732.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 3732.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3732.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3732.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3732.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3732.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3732.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3732.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3732.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3732.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3732.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3732.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3732.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3732.394789][    C2] PKRU: 55555554
[ 3732.394789][    C2] Call Trace:
[ 3732.394793][    C2]  <TASK>
[ 3732.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3732.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3732.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3732.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3732.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3732.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3732.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3732.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3732.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3732.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3732.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3732.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3732.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3732.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3732.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3732.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3732.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3732.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3732.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3732.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3732.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3732.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3732.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3732.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3732.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3732.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3732.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3732.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3732.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3732.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3732.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3732.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3732.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3732.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3732.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3732.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3732.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3732.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3732.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3732.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3732.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 3732.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 3732.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3732.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3732.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3732.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3732.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 3732.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3732.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3732.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3732.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3732.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3732.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3732.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3760.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3760.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3760.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3760.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 3760.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3760.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3760.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3760.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3760.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3760.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3760.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3760.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3760.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3760.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3760.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3760.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3760.394787][    C2] PKRU: 55555554
[ 3760.394788][    C2] Call Trace:
[ 3760.394791][    C2]  <TASK>
[ 3760.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3760.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3760.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3760.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3760.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3760.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3760.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3760.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3760.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3760.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3760.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3760.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3760.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3760.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3760.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3760.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3760.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3760.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3760.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3760.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3760.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3760.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3760.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3760.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3760.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3760.394854][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3760.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3760.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3760.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3760.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3760.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3760.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3760.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3760.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3760.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3760.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3760.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3760.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3760.394877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3760.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3760.394881][    C2]  vfs_write (fs/read_write.c:686)
[ 3760.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 3760.394885][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3760.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3760.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3760.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3760.394893][    C2] RIP: 0033:0x7f814975fc5e
[ 3760.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3760.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3760.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3760.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3760.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3760.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3760.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3769.679976][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3769.680144][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3769.680264][    C2] NMI backtrace for cpu 2
| [ 3769.680274][    C2] Tainted: [L]=SOFTLOCKUP
[ 3769.680274][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3769.680276][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 3769.680279][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 3769.680281][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 3769.680283][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 3769.680284][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 3769.680285][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 3769.680286][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 3769.680287][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 3769.680290][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3769.680293][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3769.680294][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3769.680294][    C2] PKRU: 55555554
[ 3769.680295][    C2] Call Trace:
[ 3769.680297][    C2]  <IRQ>
[ 3769.680300][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 3769.680302][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 3769.680304][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 3769.680306][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 3769.680309][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3769.680311][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3769.680313][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3769.680315][    C2]  </IRQ>
[ 3769.680316][    C2]  <TASK>
[ 3769.680317][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3769.680319][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3769.680321][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3769.680322][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3769.680323][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3769.680324][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3769.680324][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3769.680325][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3769.680326][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3769.680327][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3769.680330][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3769.680332][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3769.680334][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3769.680337][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3769.680339][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3769.680341][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3769.680343][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3769.680345][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3769.680348][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3769.680350][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3769.680353][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3769.680355][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3769.680357][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3769.680359][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3769.680361][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3769.680363][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3769.680366][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3769.680368][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3769.680370][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3769.680372][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3769.680374][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3769.680377][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3769.680379][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3769.680380][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3769.680382][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3769.680384][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3769.680385][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3769.680387][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3769.680389][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3769.680390][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3769.680393][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3769.680394][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3769.680396][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3769.680398][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3769.680399][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3769.680401][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3769.680403][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3769.680404][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3769.680406][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3769.680408][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3769.680410][    C2]  vfs_write (fs/read_write.c:686)
[ 3769.680412][    C2]  ksys_write (fs/read_write.c:739)
[ 3769.680414][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3769.680416][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3769.680418][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3769.680420][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3769.680421][    C2] RIP: 0033:0x7f814975fc5e
[ 3769.680423][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3769.680424][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3769.680426][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3769.680426][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3769.680427][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3769.680428][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3769.680428][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3785.915626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3785.915867][    C2] rcu: 2-....: (2833015 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1025549
| [ 3785.916151][    C2] rcu: (t=2834143 jiffies g=521497 q=62063 ncpus=4)
| [ 3785.916291][    C2] Tainted: [L]=SOFTLOCKUP
[ 3785.916292][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3785.916294][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3785.916298][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3785.916300][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3785.916303][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3785.916304][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3785.916305][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3785.916306][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3785.916306][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3785.916309][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3785.916312][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3785.916313][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3785.916314][    C2] PKRU: 55555554
[ 3785.916315][    C2] Call Trace:
[ 3785.916315][    C2]  <TASK>
[ 3785.916316][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3785.916319][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3785.916321][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3785.916324][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3785.916326][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3785.916328][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3785.916330][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3785.916332][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3785.916335][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3785.916337][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3785.916340][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3785.916342][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3785.916345][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3785.916346][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3785.916348][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3785.916350][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3785.916353][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3785.916355][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3785.916357][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3785.916359][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3785.916361][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3785.916364][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3785.916366][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3785.916368][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3785.916370][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3785.916371][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3785.916373][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3785.916375][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3785.916376][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3785.916378][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3785.916380][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3785.916382][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3785.916383][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3785.916385][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3785.916387][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3785.916388][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3785.916390][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3785.916392][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3785.916393][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3785.916395][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3785.916397][    C2]  vfs_write (fs/read_write.c:686)
[ 3785.916399][    C2]  ksys_write (fs/read_write.c:739)
[ 3785.916401][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3785.916403][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3785.916405][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3785.916407][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3785.916408][    C2] RIP: 0033:0x7f814975fc5e
[ 3785.916410][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3785.916412][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3785.916413][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3785.916414][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3785.916415][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3785.916416][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3785.916416][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3812.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3812.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3812.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3812.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 3812.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3812.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3812.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3812.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3812.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3812.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3812.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3812.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3812.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3812.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3812.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3812.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3812.394789][    C2] PKRU: 55555554
[ 3812.394790][    C2] Call Trace:
[ 3812.394793][    C2]  <TASK>
[ 3812.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3812.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3812.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3812.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3812.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3812.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3812.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3812.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3812.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3812.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3812.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3812.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3812.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3812.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3812.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3812.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3812.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3812.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3812.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3812.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3812.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3812.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3812.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3812.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3812.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3812.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3812.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3812.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3812.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3812.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3812.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3812.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3812.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3812.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3812.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3812.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3812.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3812.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3812.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3812.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3812.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 3812.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 3812.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3812.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3812.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3812.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3812.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 3812.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3812.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3812.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3812.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3812.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3812.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3812.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3840.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3840.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3840.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3840.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 3840.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3840.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3840.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3840.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3840.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3840.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3840.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3840.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3840.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3840.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3840.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3840.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3840.394787][    C2] PKRU: 55555554
[ 3840.394788][    C2] Call Trace:
[ 3840.394791][    C2]  <TASK>
[ 3840.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3840.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3840.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3840.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3840.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3840.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3840.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3840.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3840.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3840.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3840.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3840.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3840.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3840.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3840.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3840.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3840.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3840.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3840.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3840.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3840.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3840.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3840.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3840.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3840.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3840.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3840.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3840.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3840.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3840.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3840.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3840.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3840.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3840.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3840.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3840.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3840.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3840.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3840.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3840.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3840.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 3840.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 3840.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3840.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3840.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3840.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3840.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 3840.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3840.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3840.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3840.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3840.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3840.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3840.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3863.919625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3863.919847][    C2] rcu: 2-....: (2910994 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1061233
| [ 3863.920114][    C2] rcu: (t=2912147 jiffies g=521497 q=63200 ncpus=4)
| [ 3863.920260][    C2] Tainted: [L]=SOFTLOCKUP
[ 3863.920261][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3863.920262][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3863.920266][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3863.920268][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3863.920270][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3863.920271][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3863.920272][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3863.920273][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3863.920274][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3863.920276][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3863.920279][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3863.920280][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3863.920282][    C2] PKRU: 55555554
[ 3863.920282][    C2] Call Trace:
[ 3863.920283][    C2]  <TASK>
[ 3863.920284][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3863.920286][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3863.920289][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3863.920291][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3863.920293][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3863.920295][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3863.920298][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3863.920300][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3863.920303][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3863.920304][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3863.920307][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3863.920309][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3863.920312][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3863.920313][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3863.920315][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3863.920317][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3863.920320][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3863.920322][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3863.920324][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3863.920326][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3863.920327][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3863.920331][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3863.920333][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3863.920334][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3863.920336][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3863.920338][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3863.920339][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3863.920341][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3863.920343][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3863.920344][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3863.920347][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3863.920348][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3863.920350][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3863.920352][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3863.920353][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3863.920355][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3863.920357][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3863.920359][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3863.920360][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3863.920362][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3863.920364][    C2]  vfs_write (fs/read_write.c:686)
[ 3863.920366][    C2]  ksys_write (fs/read_write.c:739)
[ 3863.920368][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3863.920370][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3863.920372][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3863.920374][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3863.920375][    C2] RIP: 0033:0x7f814975fc5e
[ 3863.920377][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3863.920378][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3863.920380][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3863.920381][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3863.920382][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3863.920383][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3863.920383][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3867.985025][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3867.985213][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3867.985350][    C2] NMI backtrace for cpu 2
| [ 3867.985359][    C2] Tainted: [L]=SOFTLOCKUP
[ 3867.985360][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3867.985361][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 3867.985365][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 3867.985366][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 3867.985368][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 3867.985369][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 3867.985370][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 3867.985371][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 3867.985372][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 3867.985374][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3867.985377][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3867.985378][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3867.985379][    C2] PKRU: 55555554
[ 3867.985380][    C2] Call Trace:
[ 3867.985382][    C2]  <IRQ>
[ 3867.985385][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 3867.985387][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 3867.985390][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 3867.985392][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 3867.985394][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3867.985396][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3867.985398][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3867.985401][    C2]  </IRQ>
[ 3867.985401][    C2]  <TASK>
[ 3867.985402][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3867.985404][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3867.985406][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3867.985407][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3867.985408][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3867.985409][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3867.985410][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3867.985411][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3867.985411][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3867.985413][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3867.985415][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3867.985417][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3867.985419][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3867.985422][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3867.985424][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3867.985425][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3867.985428][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3867.985430][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3867.985433][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3867.985435][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3867.985437][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3867.985440][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3867.985442][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3867.985444][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3867.985446][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3867.985448][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3867.985451][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3867.985453][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3867.985455][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3867.985457][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3867.985459][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3867.985462][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3867.985464][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3867.985465][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3867.985467][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3867.985469][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3867.985470][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3867.985472][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3867.985474][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3867.985475][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3867.985478][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3867.985479][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3867.985481][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3867.985483][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3867.985484][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3867.985486][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3867.985488][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3867.985490][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3867.985491][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3867.985493][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3867.985495][    C2]  vfs_write (fs/read_write.c:686)
[ 3867.985497][    C2]  ksys_write (fs/read_write.c:739)
[ 3867.985499][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3867.985501][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3867.985503][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3867.985505][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3867.985506][    C2] RIP: 0033:0x7f814975fc5e
[ 3867.985508][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3867.985510][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3867.985511][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3867.985512][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3867.985513][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3867.985513][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3867.985514][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3892.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3892.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3892.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3892.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 3892.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3892.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3892.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3892.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3892.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3892.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3892.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3892.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3892.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3892.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3892.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3892.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3892.394796][    C2] PKRU: 55555554
[ 3892.394797][    C2] Call Trace:
[ 3892.394800][    C2]  <TASK>
[ 3892.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3892.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3892.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3892.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3892.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3892.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3892.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3892.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3892.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3892.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3892.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3892.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3892.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3892.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3892.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3892.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3892.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3892.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3892.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3892.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3892.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3892.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3892.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3892.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3892.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3892.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3892.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3892.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3892.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3892.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3892.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3892.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3892.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3892.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3892.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3892.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3892.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3892.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3892.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3892.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3892.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 3892.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 3892.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3892.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3892.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3892.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3892.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 3892.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3892.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3892.394901][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3892.394902][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3892.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3892.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3892.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3920.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3920.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3920.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3920.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 3920.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3920.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3920.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3920.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3920.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3920.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3920.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3920.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3920.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3920.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3920.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3920.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3920.394789][    C2] PKRU: 55555554
[ 3920.394790][    C2] Call Trace:
[ 3920.394793][    C2]  <TASK>
[ 3920.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3920.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3920.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3920.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3920.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3920.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3920.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3920.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3920.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3920.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3920.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3920.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3920.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3920.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3920.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3920.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3920.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3920.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3920.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3920.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3920.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3920.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3920.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3920.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3920.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3920.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3920.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3920.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3920.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3920.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3920.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3920.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3920.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3920.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3920.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3920.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3920.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3920.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3920.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3920.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3920.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 3920.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 3920.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3920.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3920.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3920.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3920.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 3920.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3920.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3920.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3920.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3920.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3920.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3920.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3941.923627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 3941.923900][    C2] rcu: 2-....: (2988965 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1098664
| [ 3941.924148][    C2] rcu: (t=2990151 jiffies g=521497 q=64791 ncpus=4)
| [ 3941.924282][    C2] Tainted: [L]=SOFTLOCKUP
[ 3941.924283][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3941.924284][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3941.924288][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3941.924289][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3941.924292][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3941.924293][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3941.924294][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3941.924295][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3941.924295][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3941.924297][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3941.924301][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3941.924302][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3941.924303][    C2] PKRU: 55555554
[ 3941.924303][    C2] Call Trace:
[ 3941.924304][    C2]  <TASK>
[ 3941.924305][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3941.924308][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3941.924310][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3941.924313][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3941.924315][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3941.924316][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3941.924319][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3941.924321][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3941.924324][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3941.924326][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3941.924328][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3941.924331][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3941.924333][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3941.924334][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3941.924337][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3941.924339][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3941.924341][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3941.924343][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3941.924345][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3941.924347][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3941.924349][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3941.924352][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3941.924354][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3941.924356][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3941.924358][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3941.924359][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3941.924361][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3941.924363][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3941.924364][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3941.924366][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3941.924368][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3941.924370][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3941.924371][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3941.924373][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3941.924375][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3941.924376][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3941.924378][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3941.924380][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3941.924381][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3941.924383][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3941.924385][    C2]  vfs_write (fs/read_write.c:686)
[ 3941.924392][    C2]  ksys_write (fs/read_write.c:739)
[ 3941.924394][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3941.924395][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3941.924398][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3941.924399][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3941.924401][    C2] RIP: 0033:0x7f814975fc5e
[ 3941.924403][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3941.924404][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3941.924406][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3941.924407][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3941.924407][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3941.924408][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3941.924409][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3966.289005][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 3966.289125][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 3966.289232][    C2] NMI backtrace for cpu 2
| [ 3966.289241][    C2] Tainted: [L]=SOFTLOCKUP
[ 3966.289242][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3966.289244][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 3966.289248][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 3966.289250][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 3966.289252][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 3966.289253][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 3966.289254][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 3966.289255][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 3966.289256][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 3966.289259][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3966.289262][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3966.289263][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3966.289264][    C2] PKRU: 55555554
[ 3966.289265][    C2] Call Trace:
[ 3966.289268][    C2]  <IRQ>
[ 3966.289269][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 3966.289275][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 3966.289278][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 3966.289280][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 3966.289282][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 3966.289284][    C2]  </IRQ>
[ 3966.289285][    C2]  <TASK>
[ 3966.289286][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 3966.289288][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:182 (discriminator 1) mm/kasan/generic.c:200 (discriminator 1))
[ 3966.289290][    C2] Code: 00 00 00 f3 0f 1e fa 48 89 f2 be f8 00 00 00 e9 9f a1 ab 01 0f 1f 40 00 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 48 85 f6 <0f> 84 9a 01 00 00 48 89 f8 41 57 49 89 c8 48 01 f0 41 56 53 0f 82
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 f3                	add    %dh,%bl
   4:	0f 1e fa             	nop    %edx
   7:	48 89 f2             	mov    %rsi,%rdx
   a:	be f8 00 00 00       	mov    $0xf8,%esi
   f:	e9 9f a1 ab 01       	jmp    0x1aba1b3
  14:	0f 1f 40 00          	nopl   0x0(%rax)
  18:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  1f:	00 00 00 00 
  23:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  27:	48 85 f6             	test   %rsi,%rsi
  2a:*	0f 84 9a 01 00 00    	je     0x1ca		<-- trapping instruction
  30:	48 89 f8             	mov    %rdi,%rax
  33:	41 57                	push   %r15
  35:	49 89 c8             	mov    %rcx,%r8
  38:	48 01 f0             	add    %rsi,%rax
  3b:	41 56                	push   %r14
  3d:	53                   	push   %rbx
  3e:	0f                   	.byte 0xf
  3f:	82                   	.byte 0x82

Code starting with the faulting instruction
===========================================
   0:	0f 84 9a 01 00 00    	je     0x1a0
   6:	48 89 f8             	mov    %rdi,%rax
   9:	41 57                	push   %r15
   b:	49 89 c8             	mov    %rcx,%r8
   e:	48 01 f0             	add    %rsi,%rax
  11:	41 56                	push   %r14
  13:	53                   	push   %rbx
  14:	0f                   	.byte 0xf
  15:	82                   	.byte 0x82
[ 3966.289291][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 3966.289292][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: ffffffffac5390f1
[ 3966.289293][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3966.289294][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3966.289295][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3966.289295][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3966.289297][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3966.289298][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3966.289301][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 3966.289303][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3966.289305][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3966.289307][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3966.289310][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3966.289312][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3966.289314][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3966.289316][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3966.289319][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3966.289322][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3966.289323][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3966.289326][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3966.289328][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3966.289331][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3966.289332][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3966.289335][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3966.289337][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3966.289339][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3966.289341][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3966.289343][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3966.289345][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3966.289347][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3966.289350][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3966.289352][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3966.289354][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3966.289356][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3966.289357][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3966.289359][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3966.289361][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3966.289363][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3966.289364][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3966.289366][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3966.289368][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3966.289370][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3966.289371][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3966.289373][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3966.289375][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3966.289376][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3966.289378][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3966.289380][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3966.289381][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3966.289384][    C2]  vfs_write (fs/read_write.c:686)
[ 3966.289386][    C2]  ksys_write (fs/read_write.c:739)
[ 3966.289388][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3966.289390][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3966.289392][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3966.289393][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3966.289395][    C2] RIP: 0033:0x7f814975fc5e
[ 3966.289398][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3966.289399][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3966.289400][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3966.289401][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3966.289401][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3966.289402][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3966.289403][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 3992.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 3992.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 3992.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 3992.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 3992.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 3992.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 3992.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 3992.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 3992.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 3992.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 3992.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 3992.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 3992.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 3992.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 3992.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3992.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 3992.394797][    C2] PKRU: 55555554
[ 3992.394798][    C2] Call Trace:
[ 3992.394802][    C2]  <TASK>
[ 3992.394805][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 3992.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 3992.394810][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 3992.394812][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 3992.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 3992.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3992.394823][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 3992.394825][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 3992.394828][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 3992.394830][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 3992.394832][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 3992.394835][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 3992.394837][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 3992.394839][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 3992.394841][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 3992.394843][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 3992.394846][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 3992.394848][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3992.394850][    C2]  ? release_sock (net/core/sock.c:3794)
[ 3992.394852][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 3992.394854][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 3992.394857][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3992.394859][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 3992.394861][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 3992.394863][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 3992.394865][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3992.394866][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 3992.394868][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 3992.394870][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 3992.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3992.394874][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 3992.394875][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 3992.394877][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 3992.394879][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 3992.394880][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 3992.394883][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 3992.394884][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 3992.394886][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 3992.394887][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 3992.394889][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 3992.394892][    C2]  vfs_write (fs/read_write.c:686)
[ 3992.394894][    C2]  ksys_write (fs/read_write.c:739)
[ 3992.394896][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 3992.394897][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 3992.394900][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 3992.394901][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 3992.394903][    C2] RIP: 0033:0x7f814975fc5e
[ 3992.394906][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 3992.394907][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 3992.394908][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 3992.394909][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 3992.394910][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 3992.394911][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 3992.394911][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4019.926626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4019.926846][    C2] rcu: 2-....: (3066943 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1131819
| [ 4019.927165][    C2] rcu: (t=3068154 jiffies g=521497 q=65991 ncpus=4)
| [ 4019.927310][    C2] Tainted: [L]=SOFTLOCKUP
[ 4019.927311][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4019.927312][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4019.927317][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4019.927318][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4019.927320][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4019.927322][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4019.927323][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4019.927323][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4019.927324][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4019.927326][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4019.927330][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4019.927331][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4019.927332][    C2] PKRU: 55555554
[ 4019.927332][    C2] Call Trace:
[ 4019.927333][    C2]  <TASK>
[ 4019.927334][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4019.927337][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4019.927339][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4019.927341][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4019.927344][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4019.927345][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4019.927348][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4019.927350][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4019.927353][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4019.927355][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4019.927357][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4019.927360][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4019.927362][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4019.927364][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4019.927366][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4019.927368][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4019.927370][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4019.927372][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4019.927375][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4019.927377][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4019.927378][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4019.927381][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4019.927383][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4019.927385][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4019.927387][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4019.927389][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4019.927390][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4019.927392][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4019.927394][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4019.927395][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4019.927397][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4019.927399][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4019.927401][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4019.927403][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4019.927404][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4019.927406][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4019.927408][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4019.927409][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4019.927411][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4019.927413][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4019.927415][    C2]  vfs_write (fs/read_write.c:686)
[ 4019.927417][    C2]  ksys_write (fs/read_write.c:739)
[ 4019.927419][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4019.927421][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4019.927423][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4019.927425][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4019.927426][    C2] RIP: 0033:0x7f814975fc5e
[ 4019.927428][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4019.927430][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4019.927431][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4019.927432][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4019.927433][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4019.927433][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4019.927434][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4044.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4044.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4044.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4044.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 4044.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4044.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4044.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4044.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4044.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4044.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4044.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4044.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4044.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4044.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4044.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4044.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4044.394789][    C2] PKRU: 55555554
[ 4044.394790][    C2] Call Trace:
[ 4044.394793][    C2]  <TASK>
[ 4044.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4044.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4044.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4044.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4044.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4044.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4044.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4044.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4044.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4044.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4044.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4044.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4044.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4044.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4044.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4044.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4044.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4044.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4044.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4044.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4044.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4044.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4044.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4044.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4044.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4044.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4044.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4044.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4044.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4044.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4044.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4044.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4044.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4044.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4044.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4044.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4044.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4044.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4044.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4044.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4044.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 4044.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 4044.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4044.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4044.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4044.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4044.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 4044.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4044.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4044.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4044.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4044.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4044.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4044.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4064.593018][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4064.593138][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4064.593294][    C2] NMI backtrace for cpu 2
| [ 4064.593304][    C2] Tainted: [L]=SOFTLOCKUP
[ 4064.593305][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4064.593306][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 4064.593310][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 4064.593311][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 4064.593314][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 4064.593315][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 4064.593316][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 4064.593316][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 4064.593317][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 4064.593320][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4064.593323][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4064.593324][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4064.593325][    C2] PKRU: 55555554
[ 4064.593325][    C2] Call Trace:
[ 4064.593329][    C2]  <IRQ>
[ 4064.593332][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 4064.593334][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 4064.593337][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 4064.593339][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 4064.593342][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4064.593344][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4064.593346][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4064.593348][    C2]  </IRQ>
[ 4064.593349][    C2]  <TASK>
[ 4064.593350][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4064.593352][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4064.593354][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4064.593355][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4064.593356][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4064.593357][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4064.593358][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4064.593359][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4064.593359][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4064.593361][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4064.593363][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4064.593365][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4064.593367][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4064.593370][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4064.593372][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4064.593373][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4064.593376][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4064.593378][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4064.593381][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4064.593383][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4064.593385][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4064.593388][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4064.593390][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4064.593392][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4064.593394][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4064.593396][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4064.593398][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4064.593400][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4064.593402][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4064.593404][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4064.593406][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4064.593409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4064.593411][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4064.593413][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4064.593415][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4064.593416][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4064.593418][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4064.593420][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4064.593422][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4064.593423][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4064.593426][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4064.593427][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4064.593429][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4064.593430][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4064.593432][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4064.593443][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4064.593444][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4064.593446][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4064.593448][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4064.593450][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4064.593452][    C2]  vfs_write (fs/read_write.c:686)
[ 4064.593454][    C2]  ksys_write (fs/read_write.c:739)
[ 4064.593456][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4064.593458][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4064.593460][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4064.593462][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4064.593463][    C2] RIP: 0033:0x7f814975fc5e
[ 4064.593466][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4064.593467][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4064.593468][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4064.593469][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4064.593470][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4064.593471][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4064.593471][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4092.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4092.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4092.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4092.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 4092.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4092.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4092.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4092.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4092.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4092.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4092.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4092.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4092.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4092.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4092.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4092.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4092.394796][    C2] PKRU: 55555554
[ 4092.394796][    C2] Call Trace:
[ 4092.394800][    C2]  <TASK>
[ 4092.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4092.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4092.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4092.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4092.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4092.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4092.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4092.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4092.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4092.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4092.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4092.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4092.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4092.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4092.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4092.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4092.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4092.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4092.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4092.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4092.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4092.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4092.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4092.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4092.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4092.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4092.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4092.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4092.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4092.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4092.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4092.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4092.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4092.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4092.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4092.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4092.394878][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4092.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4092.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4092.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4092.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 4092.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 4092.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4092.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4092.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4092.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4092.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 4092.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4092.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4092.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4092.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4092.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4092.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4092.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4097.930625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4097.930881][    C2] rcu: 2-....: (3144914 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1164190
| [ 4097.931095][    C2] rcu: (t=3146158 jiffies g=521497 q=67582 ncpus=4)
| [ 4097.931281][    C2] Tainted: [L]=SOFTLOCKUP
[ 4097.931282][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4097.931282][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4097.931286][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4097.931288][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4097.931290][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4097.931291][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4097.931292][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4097.931293][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4097.931294][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4097.931295][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4097.931298][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4097.931299][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4097.931300][    C2] PKRU: 55555554
[ 4097.931301][    C2] Call Trace:
[ 4097.931302][    C2]  <TASK>
[ 4097.931303][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4097.931305][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4097.931308][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4097.931310][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4097.931312][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4097.931314][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4097.931317][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4097.931319][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4097.931322][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4097.931323][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4097.931326][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4097.931329][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4097.931331][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4097.931332][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4097.931335][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4097.931337][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4097.931339][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4097.931341][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4097.931343][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4097.931345][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4097.931347][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4097.931350][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4097.931352][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4097.931354][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4097.931356][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4097.931357][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4097.931359][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4097.931361][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4097.931362][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4097.931364][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4097.931366][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4097.931368][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4097.931369][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4097.931371][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4097.931373][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4097.931374][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4097.931376][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4097.931378][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4097.931379][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4097.931381][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4097.931383][    C2]  vfs_write (fs/read_write.c:686)
[ 4097.931385][    C2]  ksys_write (fs/read_write.c:739)
[ 4097.931387][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4097.931389][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4097.931391][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4097.931393][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4097.931394][    C2] RIP: 0033:0x7f814975fc5e
[ 4097.931396][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4097.931397][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4097.931399][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4097.931400][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4097.931400][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4097.931401][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4097.931402][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4124.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4124.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4124.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4124.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 4124.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4124.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4124.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4124.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4124.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4124.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4124.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4124.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4124.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4124.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4124.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4124.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4124.394788][    C2] PKRU: 55555554
[ 4124.394789][    C2] Call Trace:
[ 4124.394792][    C2]  <TASK>
[ 4124.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4124.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4124.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4124.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4124.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4124.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4124.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4124.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4124.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4124.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4124.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4124.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4124.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4124.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4124.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4124.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4124.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4124.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4124.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4124.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4124.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4124.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4124.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4124.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4124.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4124.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4124.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4124.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4124.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4124.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4124.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4124.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4124.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4124.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4124.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4124.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4124.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4124.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4124.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4124.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4124.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 4124.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 4124.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4124.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4124.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4124.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4124.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 4124.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4124.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4124.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4124.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4124.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4124.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4124.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4152.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4152.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4152.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4152.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 4152.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4152.394770][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:97 mm/kasan/generic.c:115 mm/kasan/generic.c:140 mm/kasan/generic.c:172 mm/kasan/generic.c:191 mm/kasan/generic.c:200)
[ 4152.394773][    C2] Code: 4c 89 d1 4c 89 d8 4c 29 d9 e9 19 ff ff ff 48 85 c9 74 8c 4c 01 c9 eb 1b 0f 1f 00 66 66 2e 0f 1f 84 00 00 00 00 00 48 83 c0 01 <48> 39 c8 0f 84 6c ff ff ff 80 38 00 74 ee e9 47 ff ff ff b8 01 00
All code
========
   0:	4c 89 d1             	mov    %r10,%rcx
   3:	4c 89 d8             	mov    %r11,%rax
   6:	4c 29 d9             	sub    %r11,%rcx
   9:	e9 19 ff ff ff       	jmp    0xffffffffffffff27
   e:	48 85 c9             	test   %rcx,%rcx
  11:	74 8c                	je     0xffffffffffffff9f
  13:	4c 01 c9             	add    %r9,%rcx
  16:	eb 1b                	jmp    0x33
  18:	0f 1f 00             	nopl   (%rax)
  1b:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  22:	00 00 00 00 
  26:	48 83 c0 01          	add    $0x1,%rax
  2a:*	48 39 c8             	cmp    %rcx,%rax		<-- trapping instruction
  2d:	0f 84 6c ff ff ff    	je     0xffffffffffffff9f
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 ee                	je     0x26
  38:	e9 47 ff ff ff       	jmp    0xffffffffffffff84
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 39 c8             	cmp    %rcx,%rax
   3:	0f 84 6c ff ff ff    	je     0xffffffffffffff75
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 ee                	je     0xfffffffffffffffc
   e:	e9 47 ff ff ff       	jmp    0xffffffffffffff5a
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 4152.394775][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000286
[ 4152.394776][    C2] RAX: ffe21c00024ac16a RBX: ffe21c00024ac169 RCX: ffe21c00024ac16a
[ 4152.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4152.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4152.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4152.394780][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 4152.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4152.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4152.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4152.394787][    C2] PKRU: 55555554
[ 4152.394788][    C2] Call Trace:
[ 4152.394791][    C2]  <TASK>
[ 4152.394794][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4152.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4152.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4152.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4152.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4152.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4152.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4152.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4152.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4152.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4152.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4152.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4152.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4152.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4152.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4152.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4152.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4152.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4152.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4152.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4152.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4152.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4152.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4152.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4152.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4152.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4152.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4152.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4152.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4152.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4152.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4152.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4152.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4152.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4152.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4152.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4152.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4152.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4152.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4152.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4152.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4152.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 4152.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 4152.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4152.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4152.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4152.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4152.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 4152.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4152.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4152.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4152.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4152.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4152.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4152.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4162.897045][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4162.897162][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4162.897270][    C2] NMI backtrace for cpu 2
| [ 4162.897280][    C2] Tainted: [L]=SOFTLOCKUP
[ 4162.897280][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4162.897282][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 4162.897285][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 4162.897287][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 4162.897289][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 4162.897298][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 4162.897299][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 4162.897300][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 4162.897301][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 4162.897303][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4162.897306][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4162.897307][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4162.897308][    C2] PKRU: 55555554
[ 4162.897309][    C2] Call Trace:
[ 4162.897312][    C2]  <IRQ>
[ 4162.897315][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 4162.897317][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 4162.897320][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 4162.897322][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 4162.897324][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4162.897326][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4162.897328][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4162.897330][    C2]  </IRQ>
[ 4162.897331][    C2]  <TASK>
[ 4162.897332][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4162.897334][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4162.897336][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4162.897337][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4162.897338][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4162.897339][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4162.897339][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4162.897340][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4162.897341][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4162.897342][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4162.897345][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4162.897347][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4162.897349][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4162.897352][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4162.897354][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4162.897355][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4162.897358][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4162.897360][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4162.897363][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4162.897365][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4162.897367][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4162.897370][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4162.897372][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4162.897374][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4162.897376][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4162.897378][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4162.897381][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4162.897383][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4162.897385][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4162.897387][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4162.897389][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4162.897392][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4162.897394][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4162.897396][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4162.897398][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4162.897399][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4162.897400][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4162.897402][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4162.897404][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4162.897405][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4162.897408][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4162.897409][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4162.897411][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4162.897413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4162.897414][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4162.897416][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4162.897418][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4162.897420][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4162.897421][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4162.897423][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4162.897425][    C2]  vfs_write (fs/read_write.c:686)
[ 4162.897427][    C2]  ksys_write (fs/read_write.c:739)
[ 4162.897429][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4162.897431][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4162.897433][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4162.897435][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4162.897436][    C2] RIP: 0033:0x7f814975fc5e
[ 4162.897438][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4162.897439][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4162.897441][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4162.897441][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4162.897442][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4162.897443][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4162.897443][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4175.934627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4175.934857][    C2] rcu: 2-....: (3222885 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1198069
| [ 4175.935118][    C2] rcu: (t=3224162 jiffies g=521497 q=69176 ncpus=4)
| [ 4175.935252][    C2] Tainted: [L]=SOFTLOCKUP
[ 4175.935253][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4175.935255][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4175.935259][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4175.935261][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4175.935264][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4175.935265][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4175.935266][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4175.935267][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4175.935267][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4175.935270][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4175.935273][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4175.935274][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4175.935274][    C2] PKRU: 55555554
[ 4175.935275][    C2] Call Trace:
[ 4175.935276][    C2]  <TASK>
[ 4175.935277][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4175.935280][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4175.935282][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4175.935284][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4175.935286][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4175.935288][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4175.935291][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4175.935293][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4175.935296][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4175.935297][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4175.935300][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4175.935303][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4175.935305][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4175.935306][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4175.935308][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4175.935310][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4175.935313][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4175.935315][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4175.935317][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4175.935319][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4175.935321][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4175.935324][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4175.935326][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4175.935328][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4175.935330][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4175.935332][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4175.935333][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4175.935335][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4175.935337][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4175.935338][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4175.935341][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4175.935342][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4175.935344][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4175.935345][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4175.935347][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4175.935349][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4175.935350][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4175.935352][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4175.935354][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4175.935355][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4175.935358][    C2]  vfs_write (fs/read_write.c:686)
[ 4175.935360][    C2]  ksys_write (fs/read_write.c:739)
[ 4175.935361][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4175.935363][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4175.935365][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4175.935367][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4175.935369][    C2] RIP: 0033:0x7f814975fc5e
[ 4175.935371][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4175.935372][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4175.935373][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4175.935374][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4175.935375][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4175.935375][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4175.935376][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4200.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4200.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4200.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4200.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 4200.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4200.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4200.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4200.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4200.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4200.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4200.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4200.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4200.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4200.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4200.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4200.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4200.394789][    C2] PKRU: 55555554
[ 4200.394790][    C2] Call Trace:
[ 4200.394793][    C2]  <TASK>
[ 4200.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4200.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4200.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4200.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4200.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4200.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4200.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4200.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4200.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4200.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4200.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4200.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4200.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4200.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4200.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4200.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4200.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4200.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4200.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4200.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4200.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4200.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4200.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4200.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4200.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4200.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4200.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4200.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4200.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4200.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4200.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4200.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4200.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4200.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4200.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4200.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4200.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4200.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4200.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4200.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4200.394878][    C2]  vfs_write (fs/read_write.c:686)
[ 4200.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 4200.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4200.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4200.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4200.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4200.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 4200.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4200.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4200.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4200.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4200.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4200.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4200.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4228.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4228.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4228.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4228.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 4228.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4228.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4228.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4228.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4228.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4228.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4228.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4228.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4228.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4228.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4228.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4228.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4228.394788][    C2] PKRU: 55555554
[ 4228.394788][    C2] Call Trace:
[ 4228.394791][    C2]  <TASK>
[ 4228.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4228.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4228.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4228.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4228.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4228.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4228.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4228.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4228.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4228.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4228.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4228.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4228.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4228.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4228.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4228.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4228.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4228.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4228.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4228.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4228.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4228.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4228.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4228.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4228.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4228.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4228.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4228.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4228.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4228.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4228.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4228.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4228.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4228.394869][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4228.394871][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4228.394873][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4228.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4228.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4228.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4228.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4228.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 4228.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 4228.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4228.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4228.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4228.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4228.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 4228.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4228.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4228.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4228.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4228.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4228.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4228.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4253.937626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4253.937899][    C2] rcu: 2-....: (3300864 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1236966
| [ 4253.938162][    C2] rcu: (t=3302165 jiffies g=521497 q=70313 ncpus=4)
| [ 4253.938295][    C2] Tainted: [L]=SOFTLOCKUP
[ 4253.938296][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4253.938297][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4253.938301][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4253.938302][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4253.938304][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4253.938306][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4253.938307][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4253.938307][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4253.938308][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4253.938311][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4253.938314][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4253.938315][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4253.938316][    C2] PKRU: 55555554
[ 4253.938317][    C2] Call Trace:
[ 4253.938318][    C2]  <TASK>
[ 4253.938318][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4253.938321][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4253.938323][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4253.938326][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4253.938328][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4253.938330][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4253.938332][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4253.938335][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4253.938338][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4253.938339][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4253.938342][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4253.938344][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4253.938347][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4253.938348][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4253.938350][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4253.938352][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4253.938355][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4253.938357][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4253.938359][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4253.938361][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4253.938362][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4253.938365][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4253.938368][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4253.938369][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4253.938371][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4253.938373][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4253.938374][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4253.938376][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4253.938378][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4253.938379][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4253.938382][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4253.938383][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4253.938385][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4253.938387][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4253.938388][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4253.938390][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4253.938391][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4253.938393][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4253.938395][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4253.938396][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4253.938399][    C2]  vfs_write (fs/read_write.c:686)
[ 4253.938401][    C2]  ksys_write (fs/read_write.c:739)
[ 4253.938403][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4253.938404][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4253.938407][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4253.938408][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4253.938410][    C2] RIP: 0033:0x7f814975fc5e
[ 4253.938412][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4253.938413][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4253.938414][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4253.938415][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4253.938416][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4253.938417][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4253.938417][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4261.200041][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4261.200203][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4261.200312][    C2] NMI backtrace for cpu 2
| [ 4261.200321][    C2] Tainted: [L]=SOFTLOCKUP
[ 4261.200322][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4261.200324][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 4261.200327][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 4261.200329][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 4261.200331][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 4261.200332][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 4261.200333][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 4261.200334][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 4261.200335][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 4261.200338][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4261.200342][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4261.200342][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4261.200343][    C2] PKRU: 55555554
[ 4261.200344][    C2] Call Trace:
[ 4261.200347][    C2]  <IRQ>
[ 4261.200351][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 4261.200353][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 4261.200356][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 4261.200357][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 4261.200360][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4261.200362][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4261.200364][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4261.200366][    C2]  </IRQ>
[ 4261.200367][    C2]  <TASK>
[ 4261.200367][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4261.200370][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4261.200372][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4261.200373][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4261.200374][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4261.200374][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4261.200375][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4261.200376][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4261.200377][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4261.200378][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4261.200381][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4261.200383][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4261.200385][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4261.200387][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4261.200389][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4261.200391][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4261.200393][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4261.200396][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4261.200398][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4261.200400][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4261.200402][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4261.200405][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4261.200407][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4261.200409][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4261.200411][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4261.200413][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4261.200416][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4261.200418][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4261.200420][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4261.200422][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4261.200423][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4261.200426][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4261.200428][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4261.200430][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4261.200432][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4261.200434][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4261.200435][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4261.200437][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4261.200439][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4261.200440][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4261.200442][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4261.200444][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4261.200446][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4261.200447][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4261.200449][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4261.200451][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4261.200452][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4261.200454][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4261.200456][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4261.200457][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4261.200460][    C2]  vfs_write (fs/read_write.c:686)
[ 4261.200462][    C2]  ksys_write (fs/read_write.c:739)
[ 4261.200463][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4261.200465][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4261.200467][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4261.200469][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4261.200471][    C2] RIP: 0033:0x7f814975fc5e
[ 4261.200473][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4261.200474][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4261.200475][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4261.200476][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4261.200477][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4261.200478][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4261.200478][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4288.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4288.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4288.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4288.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 4288.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4288.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4288.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4288.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4288.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4288.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4288.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4288.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4288.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4288.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4288.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4288.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4288.394796][    C2] PKRU: 55555554
[ 4288.394796][    C2] Call Trace:
[ 4288.394800][    C2]  <TASK>
[ 4288.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4288.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4288.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4288.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4288.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4288.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4288.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4288.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4288.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4288.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4288.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4288.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4288.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4288.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4288.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4288.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4288.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4288.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4288.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4288.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4288.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4288.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4288.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4288.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4288.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4288.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4288.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4288.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4288.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4288.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4288.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4288.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4288.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4288.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4288.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4288.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4288.394878][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4288.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4288.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4288.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4288.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 4288.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 4288.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4288.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4288.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4288.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4288.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 4288.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4288.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4288.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4288.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4288.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4288.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4288.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4316.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4316.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4316.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4316.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 4316.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4316.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4316.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4316.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4316.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4316.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4316.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4316.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4316.394778][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4316.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4316.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4316.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4316.394786][    C2] PKRU: 55555554
[ 4316.394786][    C2] Call Trace:
[ 4316.394790][    C2]  <TASK>
[ 4316.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4316.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4316.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4316.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4316.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4316.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4316.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4316.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4316.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4316.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4316.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4316.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4316.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4316.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4316.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4316.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4316.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4316.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4316.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4316.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4316.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4316.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4316.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4316.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4316.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4316.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4316.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4316.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4316.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4316.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4316.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4316.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4316.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4316.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4316.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4316.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4316.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4316.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4316.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4316.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4316.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 4316.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 4316.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4316.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4316.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4316.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4316.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 4316.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4316.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4316.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4316.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4316.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4316.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4316.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4331.941625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4331.941916][    C2] rcu: 2-....: (3378835 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1267950
| [ 4331.942132][    C2] rcu: (t=3380169 jiffies g=521497 q=71904 ncpus=4)
| [ 4331.942267][    C2] Tainted: [L]=SOFTLOCKUP
[ 4331.942268][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4331.942270][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4331.942273][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 4331.942275][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 4331.942277][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4331.942278][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4331.942279][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4331.942280][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4331.942281][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4331.942283][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4331.942287][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4331.942288][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4331.942289][    C2] PKRU: 55555554
[ 4331.942290][    C2] Call Trace:
[ 4331.942291][    C2]  <TASK>
[ 4331.942291][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4331.942294][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4331.942296][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4331.942299][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4331.942301][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4331.942303][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4331.942306][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4331.942308][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4331.942311][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4331.942313][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4331.942315][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4331.942318][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4331.942320][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4331.942321][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4331.942324][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4331.942326][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4331.942328][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4331.942330][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4331.942332][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4331.942334][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4331.942336][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4331.942339][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4331.942341][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4331.942343][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4331.942345][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4331.942346][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4331.942347][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4331.942349][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4331.942351][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4331.942352][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4331.942355][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4331.942357][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4331.942358][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4331.942360][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4331.942362][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4331.942363][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4331.942365][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4331.942367][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4331.942368][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4331.942370][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4331.942372][    C2]  vfs_write (fs/read_write.c:686)
[ 4331.942374][    C2]  ksys_write (fs/read_write.c:739)
[ 4331.942376][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4331.942378][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4331.942380][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4331.942381][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4331.942383][    C2] RIP: 0033:0x7f814975fc5e
[ 4331.942385][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4331.942386][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4331.942388][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4331.942389][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4331.942390][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4331.942391][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4331.942391][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4356.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4356.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4356.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4356.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 4356.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4356.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4356.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4356.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4356.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4356.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4356.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4356.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4356.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4356.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4356.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4356.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4356.394788][    C2] PKRU: 55555554
[ 4356.394788][    C2] Call Trace:
[ 4356.394791][    C2]  <TASK>
[ 4356.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4356.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4356.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4356.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4356.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4356.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4356.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4356.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4356.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4356.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4356.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4356.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4356.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4356.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4356.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4356.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4356.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4356.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4356.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4356.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4356.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4356.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4356.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4356.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4356.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4356.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4356.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4356.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4356.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4356.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4356.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4356.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4356.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4356.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4356.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4356.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4356.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4356.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4356.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4356.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4356.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 4356.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 4356.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4356.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4356.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4356.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4356.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 4356.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4356.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4356.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4356.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4356.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4356.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4356.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4359.504002][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4359.504125][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4359.504269][    C2] NMI backtrace for cpu 2
| [ 4359.504277][    C2] Tainted: [L]=SOFTLOCKUP
[ 4359.504278][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4359.504279][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 4359.504282][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 4359.504283][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 4359.504286][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 4359.504287][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 4359.504288][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 4359.504288][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 4359.504289][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 4359.504292][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4359.504295][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4359.504296][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4359.504297][    C2] PKRU: 55555554
[ 4359.504297][    C2] Call Trace:
[ 4359.504299][    C2]  <IRQ>
[ 4359.504301][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 4359.504303][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 4359.504306][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 4359.504308][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 4359.504311][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4359.504313][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4359.504315][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4359.504317][    C2]  </IRQ>
[ 4359.504317][    C2]  <TASK>
[ 4359.504318][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4359.504320][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4359.504322][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4359.504323][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4359.504324][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4359.504325][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4359.504326][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4359.504326][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4359.504327][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4359.504328][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4359.504331][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4359.504333][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4359.504335][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4359.504337][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4359.504339][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4359.504341][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4359.504344][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4359.504346][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4359.504349][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4359.504350][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4359.504353][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4359.504355][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4359.504357][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4359.504359][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4359.504361][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4359.504363][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4359.504366][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4359.504367][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4359.504370][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4359.504372][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4359.504373][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4359.504376][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4359.504378][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4359.504380][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4359.504382][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4359.504384][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4359.504385][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4359.504387][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4359.504389][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4359.504390][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4359.504392][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4359.504394][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4359.504395][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4359.504397][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4359.504399][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4359.504401][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4359.504402][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4359.504404][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4359.504406][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4359.504407][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4359.504410][    C2]  vfs_write (fs/read_write.c:686)
[ 4359.504412][    C2]  ksys_write (fs/read_write.c:739)
[ 4359.504413][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4359.504415][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4359.504418][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4359.504419][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4359.504421][    C2] RIP: 0033:0x7f814975fc5e
[ 4359.504422][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4359.504424][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4359.504425][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4359.504426][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4359.504426][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4359.504427][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4359.504428][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4384.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4384.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4384.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4384.394775][    C2] Tainted: [L]=SOFTLOCKUP
[ 4384.394776][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4384.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4384.394780][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4384.394781][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4384.394783][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4384.394784][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4384.394785][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4384.394786][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4384.394786][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4384.394789][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4384.394792][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4384.394793][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4384.394794][    C2] PKRU: 55555554
[ 4384.394795][    C2] Call Trace:
[ 4384.394798][    C2]  <TASK>
[ 4384.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4384.394803][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4384.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4384.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4384.394811][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4384.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4384.394815][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4384.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4384.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4384.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4384.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4384.394827][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4384.394829][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4384.394831][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4384.394833][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4384.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4384.394838][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4384.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4384.394842][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4384.394844][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4384.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4384.394849][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4384.394851][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4384.394853][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4384.394855][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4384.394857][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4384.394858][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4384.394860][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4384.394862][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4384.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4384.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4384.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4384.394869][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4384.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4384.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4384.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4384.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4384.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4384.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4384.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4384.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 4384.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 4384.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4384.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4384.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4384.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4384.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 4384.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4384.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4384.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4384.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4384.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4384.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4384.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4409.945626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4409.945849][    C2] rcu: 2-....: (3456806 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1303757
| [ 4409.946059][    C2] rcu: (t=3458173 jiffies g=521497 q=73498 ncpus=4)
| [ 4409.946271][    C2] Tainted: [L]=SOFTLOCKUP
[ 4409.946272][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4409.946273][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4409.946277][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4409.946279][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4409.946281][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4409.946282][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4409.946283][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4409.946284][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4409.946285][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4409.946287][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4409.946290][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4409.946291][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4409.946292][    C2] PKRU: 55555554
[ 4409.946293][    C2] Call Trace:
[ 4409.946294][    C2]  <TASK>
[ 4409.946295][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4409.946297][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4409.946299][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4409.946302][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4409.946304][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4409.946306][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4409.946308][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4409.946310][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4409.946313][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4409.946315][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4409.946317][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4409.946320][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4409.946322][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4409.946324][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4409.946326][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4409.946328][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4409.946330][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4409.946332][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4409.946334][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4409.946336][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4409.946338][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4409.946341][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4409.946343][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4409.946345][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4409.946347][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4409.946348][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4409.946350][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4409.946352][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4409.946353][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4409.946355][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4409.946357][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4409.946359][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4409.946360][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4409.946362][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4409.946364][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4409.946365][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4409.946367][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4409.946369][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4409.946370][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4409.946372][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4409.946374][    C2]  vfs_write (fs/read_write.c:686)
[ 4409.946376][    C2]  ksys_write (fs/read_write.c:739)
[ 4409.946378][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4409.946380][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4409.946382][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4409.946384][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4409.946385][    C2] RIP: 0033:0x7f814975fc5e
[ 4409.946387][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4409.946388][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4409.946390][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4409.946391][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4409.946392][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4409.946392][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4409.946393][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4436.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4436.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4436.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4436.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 4436.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4436.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4436.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4436.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4436.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4436.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4436.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4436.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4436.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4436.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4436.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4436.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4436.394790][    C2] PKRU: 55555554
[ 4436.394791][    C2] Call Trace:
[ 4436.394793][    C2]  <TASK>
[ 4436.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4436.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4436.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4436.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4436.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4436.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4436.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4436.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4436.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4436.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4436.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4436.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4436.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4436.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4436.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4436.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4436.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4436.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4436.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4436.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4436.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4436.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4436.394848][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4436.394850][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4436.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4436.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4436.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4436.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4436.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4436.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4436.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4436.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4436.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4436.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4436.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4436.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4436.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4436.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4436.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4436.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4436.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 4436.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 4436.394885][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4436.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4436.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4436.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4436.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 4436.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4436.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4436.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4436.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4436.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4436.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4436.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4457.808991][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4457.809107][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4457.809285][    C2] NMI backtrace for cpu 2
| [ 4457.809295][    C2] Tainted: [L]=SOFTLOCKUP
[ 4457.809295][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4457.809297][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 4457.809301][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 4457.809303][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 4457.809305][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 4457.809307][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 4457.809308][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 4457.809308][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 4457.809309][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 4457.809312][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4457.809315][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4457.809317][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4457.809317][    C2] PKRU: 55555554
[ 4457.809318][    C2] Call Trace:
[ 4457.809322][    C2]  <IRQ>
[ 4457.809323][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 4457.809328][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 4457.809331][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4457.809333][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4457.809335][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4457.809337][    C2]  </IRQ>
[ 4457.809338][    C2]  <TASK>
[ 4457.809339][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4457.809341][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4457.809343][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4457.809344][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4457.809345][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4457.809346][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4457.809347][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4457.809348][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4457.809348][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4457.809350][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4457.809352][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4457.809354][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4457.809356][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4457.809359][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4457.809361][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4457.809363][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4457.809365][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4457.809367][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4457.809370][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4457.809372][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4457.809375][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4457.809377][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4457.809379][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4457.809381][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4457.809383][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4457.809385][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4457.809388][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4457.809390][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4457.809392][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4457.809394][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4457.809396][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4457.809399][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4457.809401][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4457.809403][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4457.809405][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4457.809406][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4457.809407][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4457.809409][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4457.809411][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4457.809413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4457.809415][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4457.809417][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4457.809418][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4457.809420][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4457.809422][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4457.809423][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4457.809425][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4457.809427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4457.809428][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4457.809430][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4457.809432][    C2]  vfs_write (fs/read_write.c:686)
[ 4457.809434][    C2]  ksys_write (fs/read_write.c:739)
[ 4457.809436][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4457.809438][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4457.809440][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4457.809442][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4457.809443][    C2] RIP: 0033:0x7f814975fc5e
[ 4457.809446][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4457.809447][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4457.809448][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4457.809449][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4457.809450][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4457.809450][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4457.809451][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4484.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4484.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4484.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4484.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 4484.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4484.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4484.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4484.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4484.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4484.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4484.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4484.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4484.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4484.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4484.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4484.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4484.394796][    C2] PKRU: 55555554
[ 4484.394796][    C2] Call Trace:
[ 4484.394800][    C2]  <TASK>
[ 4484.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4484.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4484.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4484.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4484.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4484.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4484.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4484.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4484.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4484.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4484.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4484.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4484.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4484.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4484.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4484.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4484.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4484.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4484.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4484.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4484.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4484.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4484.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4484.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4484.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4484.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4484.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4484.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4484.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4484.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4484.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4484.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4484.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4484.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4484.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4484.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4484.394878][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4484.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4484.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4484.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4484.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 4484.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 4484.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4484.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4484.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4484.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4484.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 4484.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4484.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4484.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4484.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4484.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4484.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4484.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4487.949624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4487.949817][    C2] rcu: 2-....: (3534777 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1333422
| [ 4487.950056][    C2] rcu: (t=3536177 jiffies g=521497 q=75084 ncpus=4)
| [ 4487.950246][    C2] Tainted: [L]=SOFTLOCKUP
[ 4487.950246][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4487.950248][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4487.950251][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4487.950253][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4487.950255][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4487.950256][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4487.950257][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4487.950258][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4487.950259][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4487.950261][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4487.950264][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4487.950265][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4487.950266][    C2] PKRU: 55555554
[ 4487.950266][    C2] Call Trace:
[ 4487.950267][    C2]  <TASK>
[ 4487.950268][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4487.950270][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4487.950272][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4487.950275][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4487.950277][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4487.950279][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4487.950281][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4487.950283][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4487.950286][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4487.950288][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4487.950291][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4487.950293][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4487.950295][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4487.950297][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4487.950299][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4487.950301][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4487.950304][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4487.950305][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4487.950308][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4487.950310][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4487.950311][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4487.950314][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4487.950316][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4487.950318][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4487.950320][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4487.950322][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4487.950323][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4487.950325][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4487.950327][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4487.950328][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4487.950331][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4487.950332][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4487.950334][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4487.950336][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4487.950337][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4487.950339][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4487.950341][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4487.950343][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4487.950344][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4487.950346][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4487.950348][    C2]  vfs_write (fs/read_write.c:686)
[ 4487.950350][    C2]  ksys_write (fs/read_write.c:739)
[ 4487.950352][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4487.950354][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4487.950356][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4487.950358][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4487.950359][    C2] RIP: 0033:0x7f814975fc5e
[ 4487.950361][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4487.950362][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4487.950364][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4487.950364][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4487.950365][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4487.950366][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4487.950367][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4512.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4512.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4512.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4512.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 4512.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4512.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4512.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4512.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4512.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4512.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4512.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4512.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4512.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4512.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4512.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4512.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4512.394786][    C2] PKRU: 55555554
[ 4512.394787][    C2] Call Trace:
[ 4512.394790][    C2]  <TASK>
[ 4512.394792][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4512.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4512.394797][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4512.394799][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4512.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4512.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4512.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4512.394808][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4512.394811][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4512.394813][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4512.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4512.394818][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4512.394820][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4512.394822][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4512.394824][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4512.394826][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4512.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4512.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4512.394833][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4512.394835][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4512.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4512.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4512.394842][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4512.394844][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4512.394846][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4512.394847][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4512.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4512.394851][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4512.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4512.394854][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4512.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4512.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4512.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4512.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4512.394863][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4512.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4512.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4512.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4512.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4512.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4512.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 4512.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 4512.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4512.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4512.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4512.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4512.394886][    C2] RIP: 0033:0x7f814975fc5e
[ 4512.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4512.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4512.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4512.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4512.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4512.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4512.394894][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4540.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4540.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4540.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4540.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 4540.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4540.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4540.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4540.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4540.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4540.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4540.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4540.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4540.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4540.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4540.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4540.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4540.394787][    C2] PKRU: 55555554
[ 4540.394788][    C2] Call Trace:
[ 4540.394791][    C2]  <TASK>
[ 4540.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4540.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4540.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4540.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4540.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4540.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4540.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4540.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4540.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4540.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4540.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4540.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4540.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4540.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4540.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4540.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4540.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4540.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4540.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4540.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4540.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4540.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4540.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4540.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4540.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4540.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4540.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4540.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4540.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4540.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4540.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4540.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4540.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4540.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4540.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4540.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4540.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4540.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4540.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4540.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4540.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 4540.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 4540.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4540.394881][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4540.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4540.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4540.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 4540.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4540.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4540.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4540.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4540.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4540.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4540.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4556.111981][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4556.112137][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4556.112254][    C2] NMI backtrace for cpu 2
| [ 4556.112264][    C2] Tainted: [L]=SOFTLOCKUP
[ 4556.112265][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4556.112266][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4556.112270][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4556.112271][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4556.112273][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4556.112275][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4556.112275][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4556.112276][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4556.112277][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4556.112280][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4556.112283][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4556.112284][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4556.112285][    C2] PKRU: 55555554
[ 4556.112285][    C2] Call Trace:
[ 4556.112288][    C2]  <TASK>
[ 4556.112292][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4556.112294][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4556.112296][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4556.112299][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4556.112301][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4556.112303][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4556.112305][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4556.112308][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4556.112311][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4556.112312][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4556.112315][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4556.112317][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4556.112320][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4556.112321][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4556.112323][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4556.112325][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4556.112328][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4556.112330][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4556.112332][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4556.112334][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4556.112336][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4556.112339][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4556.112341][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4556.112343][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4556.112345][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4556.112346][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4556.112348][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4556.112350][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4556.112352][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4556.112353][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4556.112355][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4556.112357][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4556.112359][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4556.112360][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4556.112362][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4556.112364][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4556.112365][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4556.112367][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4556.112369][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4556.112370][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4556.112373][    C2]  vfs_write (fs/read_write.c:686)
[ 4556.112375][    C2]  ksys_write (fs/read_write.c:739)
[ 4556.112377][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4556.112378][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4556.112381][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4556.112382][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4556.112384][    C2] RIP: 0033:0x7f814975fc5e
[ 4556.112387][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4556.112388][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4556.112389][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4556.112390][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4556.112391][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4556.112391][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4556.112392][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4565.952626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4565.952863][    C2] rcu: 2-....: (3612749 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1363370
| [ 4565.953124][    C2] rcu: (t=3614180 jiffies g=521497 q=76584 ncpus=4)
| [ 4565.953290][    C2] Tainted: [L]=SOFTLOCKUP
[ 4565.953291][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4565.953293][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4565.953297][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4565.953299][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4565.953301][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4565.953303][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4565.953303][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4565.953304][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4565.953305][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4565.953307][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4565.953310][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4565.953311][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4565.953312][    C2] PKRU: 55555554
[ 4565.953312][    C2] Call Trace:
[ 4565.953313][    C2]  <TASK>
[ 4565.953314][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4565.953317][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4565.953319][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4565.953321][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4565.953324][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4565.953325][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4565.953328][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4565.953330][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4565.953333][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4565.953335][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4565.953337][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4565.953340][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4565.953342][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4565.953343][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4565.953346][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4565.953348][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4565.953350][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4565.953352][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4565.953354][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4565.953356][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4565.953358][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4565.953361][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4565.953363][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4565.953365][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4565.953367][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4565.953368][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4565.953370][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4565.953372][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4565.953373][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4565.953375][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4565.953377][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4565.953379][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4565.953380][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4565.953382][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4565.953384][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4565.953385][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4565.953387][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4565.953389][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4565.953390][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4565.953392][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4565.953394][    C2]  vfs_write (fs/read_write.c:686)
[ 4565.953396][    C2]  ksys_write (fs/read_write.c:739)
[ 4565.953398][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4565.953400][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4565.953402][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4565.953404][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4565.953405][    C2] RIP: 0033:0x7f814975fc5e
[ 4565.953407][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4565.953409][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4565.953410][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4565.953411][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4565.953412][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4565.953412][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4565.953413][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4592.394761][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4592.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4592.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4592.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 4592.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4592.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4592.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4592.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4592.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4592.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4592.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4592.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4592.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4592.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4592.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4592.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4592.394790][    C2] PKRU: 55555554
[ 4592.394791][    C2] Call Trace:
[ 4592.394794][    C2]  <TASK>
[ 4592.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4592.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4592.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4592.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4592.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4592.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4592.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4592.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4592.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4592.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4592.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4592.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4592.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4592.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4592.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4592.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4592.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4592.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4592.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4592.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4592.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4592.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4592.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4592.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4592.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4592.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4592.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4592.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4592.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4592.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4592.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4592.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4592.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4592.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4592.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4592.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4592.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4592.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4592.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4592.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4592.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 4592.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 4592.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4592.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4592.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4592.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4592.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 4592.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4592.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4592.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4592.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4592.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4592.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4592.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4620.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4620.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4620.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4620.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 4620.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4620.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4620.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4620.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4620.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4620.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4620.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4620.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4620.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4620.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4620.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4620.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4620.394787][    C2] PKRU: 55555554
[ 4620.394787][    C2] Call Trace:
[ 4620.394791][    C2]  <TASK>
[ 4620.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4620.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4620.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4620.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4620.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4620.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4620.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4620.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4620.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4620.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4620.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4620.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4620.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4620.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4620.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4620.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4620.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4620.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4620.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4620.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4620.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4620.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4620.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4620.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4620.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4620.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4620.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4620.394851][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4620.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4620.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4620.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4620.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4620.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4620.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4620.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4620.394865][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4620.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4620.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4620.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4620.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4620.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 4620.394876][    C2]  ksys_write (fs/read_write.c:739)
[ 4620.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4620.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4620.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4620.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4620.394886][    C2] RIP: 0033:0x7f814975fc5e
[ 4620.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4620.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4620.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4620.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4620.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4620.394893][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4620.394894][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4643.956625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4643.956885][    C2] rcu: 2-....: (3690729 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1392521
| [ 4643.957146][    C2] rcu: (t=3692184 jiffies g=521497 q=77721 ncpus=4)
| [ 4643.957277][    C2] Tainted: [L]=SOFTLOCKUP
[ 4643.957278][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4643.957280][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4643.957284][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4643.957285][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4643.957287][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4643.957289][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4643.957290][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4643.957291][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4643.957291][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4643.957293][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4643.957297][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4643.957298][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4643.957299][    C2] PKRU: 55555554
[ 4643.957299][    C2] Call Trace:
[ 4643.957300][    C2]  <TASK>
[ 4643.957301][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4643.957303][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4643.957306][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4643.957308][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4643.957311][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4643.957312][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4643.957315][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4643.957317][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4643.957320][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4643.957322][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4643.957324][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4643.957327][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4643.957329][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4643.957331][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4643.957333][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4643.957335][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4643.957337][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4643.957339][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4643.957341][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4643.957343][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4643.957345][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4643.957348][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4643.957350][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4643.957352][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4643.957354][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4643.957355][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4643.957357][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4643.957359][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4643.957360][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4643.957362][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4643.957364][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4643.957366][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4643.957368][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4643.957369][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4643.957371][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4643.957373][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4643.957374][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4643.957376][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4643.957378][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4643.957379][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4643.957382][    C2]  vfs_write (fs/read_write.c:686)
[ 4643.957384][    C2]  ksys_write (fs/read_write.c:739)
[ 4643.957386][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4643.957387][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4643.957390][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4643.957391][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4643.957393][    C2] RIP: 0033:0x7f814975fc5e
[ 4643.957395][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4643.957396][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4643.957397][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4643.957398][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4643.957399][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4643.957400][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4643.957401][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4654.416084][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4654.416266][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4654.416394][    C2] NMI backtrace for cpu 2
| [ 4654.416404][    C2] Tainted: [L]=SOFTLOCKUP
[ 4654.416405][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4654.416406][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 4654.416410][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 4654.416412][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 4654.416414][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 4654.416415][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 4654.416416][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 4654.416417][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 4654.416418][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 4654.416421][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4654.416424][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4654.416425][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4654.416426][    C2] PKRU: 55555554
[ 4654.416426][    C2] Call Trace:
[ 4654.416430][    C2]  <IRQ>
[ 4654.416433][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 4654.416435][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 4654.416438][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 4654.416440][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 4654.416442][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4654.416444][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4654.416446][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4654.416448][    C2]  </IRQ>
[ 4654.416449][    C2]  <TASK>
[ 4654.416450][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4654.416452][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4654.416454][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4654.416455][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4654.416456][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4654.416457][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4654.416457][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4654.416458][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4654.416459][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4654.416460][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4654.416463][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4654.416465][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4654.416467][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4654.416469][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4654.416471][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4654.416473][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4654.416475][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4654.416478][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4654.416481][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4654.416483][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4654.416485][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4654.416487][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4654.416490][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4654.416491][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4654.416493][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4654.416495][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4654.416498][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4654.416500][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4654.416502][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4654.416504][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4654.416506][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4654.416509][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4654.416511][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4654.416513][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4654.416515][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4654.416525][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4654.416526][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4654.416528][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4654.416530][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4654.416532][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4654.416534][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4654.416536][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4654.416537][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4654.416539][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4654.416540][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4654.416542][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4654.416544][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4654.416546][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4654.416547][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4654.416549][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4654.416551][    C2]  vfs_write (fs/read_write.c:686)
[ 4654.416553][    C2]  ksys_write (fs/read_write.c:739)
[ 4654.416555][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4654.416557][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4654.416559][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4654.416561][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4654.416562][    C2] RIP: 0033:0x7f814975fc5e
[ 4654.416565][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4654.416566][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4654.416567][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4654.416568][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4654.416569][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4654.416569][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4654.416570][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4680.394768][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4680.394770][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4680.394772][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4680.394779][    C2] Tainted: [L]=SOFTLOCKUP
[ 4680.394780][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4680.394781][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4680.394784][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4680.394785][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4680.394787][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4680.394788][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4680.394789][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4680.394790][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4680.394790][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4680.394793][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4680.394796][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4680.394797][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4680.394798][    C2] PKRU: 55555554
[ 4680.394798][    C2] Call Trace:
[ 4680.394802][    C2]  <TASK>
[ 4680.394805][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4680.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4680.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4680.394812][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4680.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4680.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4680.394819][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4680.394821][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4680.394824][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4680.394826][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4680.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4680.394831][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4680.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4680.394835][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4680.394837][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4680.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4680.394842][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4680.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4680.394846][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4680.394848][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4680.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4680.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4680.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4680.394857][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4680.394859][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4680.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4680.394862][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4680.394864][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4680.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4680.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4680.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4680.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4680.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4680.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4680.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4680.394878][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4680.394880][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4680.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4680.394883][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4680.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4680.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 4680.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 4680.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4680.394893][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4680.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4680.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4680.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 4680.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4680.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4680.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4680.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4680.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4680.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4680.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4708.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4708.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4708.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4708.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 4708.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4708.394774][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4708.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4708.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4708.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4708.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4708.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4708.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4708.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4708.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4708.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4708.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4708.394791][    C2] PKRU: 55555554
[ 4708.394791][    C2] Call Trace:
[ 4708.394795][    C2]  <TASK>
[ 4708.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4708.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4708.394804][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4708.394806][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4708.394809][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4708.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4708.394813][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4708.394815][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4708.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4708.394820][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4708.394823][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4708.394825][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4708.394828][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4708.394829][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4708.394831][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4708.394834][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4708.394836][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4708.394838][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4708.394840][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4708.394842][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4708.394844][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4708.394848][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4708.394850][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4708.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4708.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4708.394855][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4708.394857][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4708.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4708.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4708.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4708.394864][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4708.394866][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4708.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4708.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4708.394871][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4708.394873][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4708.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4708.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4708.394878][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4708.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4708.394882][    C2]  vfs_write (fs/read_write.c:686)
[ 4708.394884][    C2]  ksys_write (fs/read_write.c:739)
[ 4708.394886][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4708.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4708.394890][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4708.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4708.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 4708.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4708.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4708.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4708.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4708.394902][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4708.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4708.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4721.960628][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4721.961014][    C2] rcu: 2-....: (3768699 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1425644
| [ 4721.961230][    C2] rcu: (t=3770188 jiffies g=521497 q=79315 ncpus=4)
| [ 4721.961379][    C2] Tainted: [L]=SOFTLOCKUP
[ 4721.961381][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4721.961383][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4721.961392][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4721.961394][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4721.961397][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4721.961399][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4721.961400][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4721.961401][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4721.961402][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4721.961404][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4721.961408][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4721.961409][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4721.961410][    C2] PKRU: 55555554
[ 4721.961411][    C2] Call Trace:
[ 4721.961412][    C2]  <TASK>
[ 4721.961413][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4721.961418][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4721.961421][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4721.961425][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4721.961429][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4721.961431][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4721.961435][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4721.961437][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4721.961440][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4721.961442][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4721.961444][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4721.961447][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4721.961449][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4721.961451][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4721.961454][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4721.961456][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4721.961460][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4721.961463][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4721.961465][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4721.961467][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4721.961469][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4721.961473][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4721.961476][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4721.961478][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4721.961482][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4721.961485][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4721.961487][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4721.961490][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4721.961493][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4721.961495][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4721.961497][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4721.961499][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4721.961502][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4721.961504][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4721.961505][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4721.961508][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4721.961509][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4721.961511][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4721.961513][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4721.961515][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4721.961517][    C2]  vfs_write (fs/read_write.c:686)
[ 4721.961519][    C2]  ksys_write (fs/read_write.c:739)
[ 4721.961521][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4721.961523][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4721.961526][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4721.961528][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4721.961531][    C2] RIP: 0033:0x7f814975fc5e
[ 4721.961535][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4721.961537][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4721.961539][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4721.961540][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4721.961541][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4721.961541][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4721.961542][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4748.394777][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4748.394779][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4748.394782][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4748.394791][    C2] Tainted: [L]=SOFTLOCKUP
[ 4748.394793][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4748.394794][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4748.394798][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4748.394799][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4748.394801][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4748.394803][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4748.394804][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4748.394805][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4748.394805][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4748.394808][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4748.394812][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4748.394813][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4748.394814][    C2] PKRU: 55555554
[ 4748.394815][    C2] Call Trace:
[ 4748.394818][    C2]  <TASK>
[ 4748.394821][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4748.394826][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4748.394829][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4748.394833][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4748.394836][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4748.394838][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4748.394841][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4748.394844][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4748.394847][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4748.394849][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4748.394851][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4748.394854][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4748.394856][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4748.394858][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4748.394861][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4748.394863][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4748.394868][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4748.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4748.394872][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4748.394874][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4748.394876][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4748.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4748.394883][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4748.394885][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4748.394889][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4748.394892][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4748.394894][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4748.394896][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4748.394899][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4748.394900][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4748.394903][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4748.394905][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4748.394907][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4748.394909][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4748.394911][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4748.394913][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4748.394915][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4748.394917][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4748.394919][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4748.394920][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4748.394923][    C2]  vfs_write (fs/read_write.c:686)
[ 4748.394925][    C2]  ksys_write (fs/read_write.c:739)
[ 4748.394927][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4748.394929][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4748.394932][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4748.394934][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4748.394938][    C2] RIP: 0033:0x7f814975fc5e
[ 4748.394941][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4748.394943][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4748.394945][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4748.394946][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4748.394947][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4748.394948][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4748.394949][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4752.721008][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4752.721139][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4752.721257][    C2] NMI backtrace for cpu 2
| [ 4752.721267][    C2] Tainted: [L]=SOFTLOCKUP
[ 4752.721267][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4752.721269][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 4752.721274][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 4752.721276][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 4752.721278][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 4752.721279][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 4752.721280][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 4752.721281][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 4752.721282][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 4752.721285][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4752.721288][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4752.721289][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4752.721291][    C2] PKRU: 55555554
[ 4752.721291][    C2] Call Trace:
[ 4752.721293][    C2]  <IRQ>
[ 4752.721296][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 4752.721298][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 4752.721302][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 4752.721303][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 4752.721306][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4752.721310][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4752.721313][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4752.721316][    C2]  </IRQ>
[ 4752.721317][    C2]  <TASK>
[ 4752.721317][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4752.721320][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4752.721322][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4752.721323][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4752.721324][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4752.721325][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4752.721326][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4752.721327][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4752.721328][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4752.721329][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4752.721332][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4752.721334][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4752.721336][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4752.721339][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4752.721341][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4752.721343][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4752.721346][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4752.721348][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4752.721351][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4752.721353][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4752.721362][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4752.721365][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4752.721367][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4752.721369][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4752.721371][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4752.721373][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4752.721376][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4752.721378][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4752.721380][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4752.721382][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4752.721384][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4752.721387][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4752.721389][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4752.721391][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4752.721393][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4752.721395][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4752.721396][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4752.721399][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4752.721400][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4752.721402][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4752.721405][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4752.721406][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4752.721408][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4752.721410][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4752.721412][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4752.721414][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4752.721415][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4752.721417][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4752.721419][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4752.721421][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4752.721424][    C2]  vfs_write (fs/read_write.c:686)
[ 4752.721426][    C2]  ksys_write (fs/read_write.c:739)
[ 4752.721428][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4752.721430][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4752.721432][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4752.721434][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4752.721435][    C2] RIP: 0033:0x7f814975fc5e
[ 4752.721438][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4752.721439][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4752.721441][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4752.721442][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4752.721443][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4752.721443][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4752.721444][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4780.394779][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4780.394781][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4780.394785][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4780.394796][    C2] Tainted: [L]=SOFTLOCKUP
[ 4780.394797][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4780.394799][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4780.394803][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4780.394804][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4780.394807][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4780.394808][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4780.394809][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4780.394810][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4780.394811][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4780.394813][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4780.394817][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4780.394818][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4780.394819][    C2] PKRU: 55555554
[ 4780.394820][    C2] Call Trace:
[ 4780.394824][    C2]  <TASK>
[ 4780.394828][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4780.394833][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4780.394835][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4780.394839][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4780.394843][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4780.394845][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4780.394847][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4780.394850][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4780.394853][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4780.394855][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4780.394857][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4780.394860][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4780.394862][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4780.394864][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4780.394866][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4780.394869][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4780.394873][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4780.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4780.394878][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4780.394880][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4780.394882][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4780.394886][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4780.394890][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4780.394891][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4780.394895][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4780.394898][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4780.394900][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4780.394902][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4780.394905][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4780.394907][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4780.394910][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4780.394912][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4780.394914][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4780.394916][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4780.394918][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4780.394921][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4780.394922][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4780.394924][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4780.394926][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4780.394928][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4780.394930][    C2]  vfs_write (fs/read_write.c:686)
[ 4780.394933][    C2]  ksys_write (fs/read_write.c:739)
[ 4780.394935][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4780.394937][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4780.394939][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4780.394942][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4780.394946][    C2] RIP: 0033:0x7f814975fc5e
[ 4780.394951][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4780.394952][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4780.394954][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4780.394955][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4780.394956][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4780.394957][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4780.394958][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4799.964626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4799.964918][    C2] rcu: 2-....: (3846670 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1462123
| [ 4799.965155][    C2] rcu: (t=3848192 jiffies g=521497 q=80906 ncpus=4)
| [ 4799.965345][    C2] Tainted: [L]=SOFTLOCKUP
[ 4799.965346][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4799.965348][    C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30)
[ 4799.965357][    C2] Code: 8b 05 34 f0 b4 03 49 8b 40 20 48 39 c7 72 0f 48 05 00 80 00 00 48 39 c7 0f 82 0c 0f 22 ff 90 0f 0b 90 c3 0f 1f 80 00 00 00 00 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 8f f5 ff ff 0f 1f 40 00 66
All code
========
   0:	8b 05 34 f0 b4 03    	mov    0x3b4f034(%rip),%eax        # 0x3b4f03a
   6:	49 8b 40 20          	mov    0x20(%r8),%rax
   a:	48 39 c7             	cmp    %rax,%rdi
   d:	72 0f                	jb     0x1e
   f:	48 05 00 80 00 00    	add    $0x8000,%rax
  15:	48 39 c7             	cmp    %rax,%rdi
  18:	0f 82 0c 0f 22 ff    	jb     0xffffffffff220f2a
  1e:	90                   	nop
  1f:	0f 0b                	ud2
  21:	90                   	nop
  22:	c3                   	ret
  23:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5ca
  3b:	0f 1f 40 00          	nopl   0x0(%rax)
  3f:	66                   	data16

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5a0
  11:	0f 1f 40 00          	nopl   0x0(%rax)
  15:	66                   	data16
[ 4799.965359][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 4799.965362][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4799.965363][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4799.965364][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4799.965365][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4799.965366][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4799.965369][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4799.965372][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4799.965373][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4799.965374][    C2] PKRU: 55555554
[ 4799.965374][    C2] Call Trace:
[ 4799.965375][    C2]  <TASK>
[ 4799.965376][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4799.965381][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4799.965385][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4799.965388][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4799.965392][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4799.965395][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4799.965396][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4799.965400][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4799.965402][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4799.965405][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4799.965407][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4799.965409][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4799.965412][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4799.965414][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4799.965416][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4799.965418][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4799.965420][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4799.965425][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4799.965427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4799.965429][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4799.965431][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4799.965433][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4799.965436][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4799.965439][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4799.965441][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4799.965445][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4799.965447][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4799.965449][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4799.965451][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4799.965453][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4799.965455][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4799.965457][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4799.965459][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4799.965461][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4799.965463][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4799.965465][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4799.965467][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4799.965469][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4799.965471][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4799.965472][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4799.965474][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4799.965476][    C2]  vfs_write (fs/read_write.c:686)
[ 4799.965479][    C2]  ksys_write (fs/read_write.c:739)
[ 4799.965481][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4799.965483][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4799.965485][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4799.965487][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4799.965490][    C2] RIP: 0033:0x7f814975fc5e
[ 4799.965493][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4799.965494][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4799.965496][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4799.965497][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4799.965498][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4799.965499][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4799.965500][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4824.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4824.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4824.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4824.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 4824.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4824.394772][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:201)
[ 4824.394775][    C2] Code: 48 39 c1 74 20 80 38 00 74 f2 b9 01 00 00 00 48 85 c0 74 2e 48 39 c3 75 19 45 89 f2 41 83 e2 07 44 3a 13 7d 0d b9 01 00 00 00 <5b> 41 5e 89 c8 41 5f c3 4c 89 c1 0f b6 d2 e8 df e9 ff ff 83 f0 01
All code
========
   0:	48 39 c1             	cmp    %rax,%rcx
   3:	74 20                	je     0x25
   5:	80 38 00             	cmpb   $0x0,(%rax)
   8:	74 f2                	je     0xfffffffffffffffc
   a:	b9 01 00 00 00       	mov    $0x1,%ecx
   f:	48 85 c0             	test   %rax,%rax
  12:	74 2e                	je     0x42
  14:	48 39 c3             	cmp    %rax,%rbx
  17:	75 19                	jne    0x32
  19:	45 89 f2             	mov    %r14d,%r10d
  1c:	41 83 e2 07          	and    $0x7,%r10d
  20:	44 3a 13             	cmp    (%rbx),%r10b
  23:	7d 0d                	jge    0x32
  25:	b9 01 00 00 00       	mov    $0x1,%ecx
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	41 5e                	pop    %r14
  2d:	89 c8                	mov    %ecx,%eax
  2f:	41 5f                	pop    %r15
  31:	c3                   	ret
  32:	4c 89 c1             	mov    %r8,%rcx
  35:	0f b6 d2             	movzbl %dl,%edx
  38:	e8 df e9 ff ff       	call   0xffffffffffffea1c
  3d:	83 f0 01             	xor    $0x1,%eax

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	41 5e                	pop    %r14
   3:	89 c8                	mov    %ecx,%eax
   5:	41 5f                	pop    %r15
   7:	c3                   	ret
   8:	4c 89 c1             	mov    %r8,%rcx
   b:	0f b6 d2             	movzbl %dl,%edx
   e:	e8 df e9 ff ff       	call   0xffffffffffffe9f2
  13:	83 f0 01             	xor    $0x1,%eax
[ 4824.394777][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000246
[ 4824.394778][    C2] RAX: ffe21c00024ac16a RBX: ffe21c00024ac169 RCX: 0000000000000001
[ 4824.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4824.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4824.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4824.394782][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 4824.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4824.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4824.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4824.394791][    C2] PKRU: 55555554
[ 4824.394791][    C2] Call Trace:
[ 4824.394795][    C2]  <TASK>
[ 4824.394799][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4824.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4824.394804][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4824.394806][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4824.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4824.394811][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4824.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4824.394815][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4824.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4824.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4824.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4824.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4824.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4824.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4824.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4824.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4824.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4824.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4824.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4824.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4824.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4824.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4824.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4824.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4824.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4824.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4824.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4824.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4824.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4824.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4824.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4824.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4824.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4824.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4824.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4824.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4824.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4824.394878][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4824.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4824.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4824.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4824.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 4824.394888][    C2]  ksys_write (fs/read_write.c:739)
[ 4824.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4824.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4824.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4824.394896][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4824.394898][    C2] RIP: 0033:0x7f814975fc5e
[ 4824.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4824.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4824.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4824.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4824.394907][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4824.394908][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4824.394909][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4851.025024][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4851.025189][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4851.025308][    C2] NMI backtrace for cpu 2
| [ 4851.025321][    C2] Tainted: [L]=SOFTLOCKUP
[ 4851.025322][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4851.025324][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 4851.025332][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 4851.025334][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 4851.025337][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 4851.025339][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 4851.025340][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 4851.025341][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 4851.025342][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 4851.025345][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4851.025349][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4851.025350][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4851.025351][    C2] PKRU: 55555554
[ 4851.025352][    C2] Call Trace:
[ 4851.025354][    C2]  <IRQ>
[ 4851.025358][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 4851.025361][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 4851.025366][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 4851.025368][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 4851.025370][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4851.025374][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4851.025377][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4851.025382][    C2]  </IRQ>
[ 4851.025382][    C2]  <TASK>
[ 4851.025383][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4851.025387][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4851.025390][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4851.025391][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4851.025392][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4851.025393][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4851.025394][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4851.025395][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4851.025395][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4851.025397][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4851.025400][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4851.025404][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4851.025406][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4851.025410][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4851.025413][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4851.025415][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4851.025419][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4851.025422][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4851.025425][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4851.025427][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4851.025430][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4851.025432][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4851.025435][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4851.025436][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4851.025439][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4851.025441][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4851.025446][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4851.025448][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4851.025450][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4851.025452][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4851.025455][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4851.025458][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4851.025462][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4851.025464][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4851.025468][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4851.025471][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4851.025472][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4851.025475][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4851.025478][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4851.025480][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4851.025482][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4851.025484][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4851.025487][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4851.025489][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4851.025490][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4851.025493][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4851.025494][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4851.025496][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4851.025498][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4851.025500][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4851.025502][    C2]  vfs_write (fs/read_write.c:686)
[ 4851.025505][    C2]  ksys_write (fs/read_write.c:739)
[ 4851.025507][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4851.025509][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4851.025512][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4851.025514][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4851.025516][    C2] RIP: 0033:0x7f814975fc5e
[ 4851.025520][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4851.025521][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4851.025523][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4851.025524][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4851.025526][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4851.025527][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4851.025528][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4876.394775][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4876.394777][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4876.394781][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4876.394790][    C2] Tainted: [L]=SOFTLOCKUP
[ 4876.394791][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4876.394793][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4876.394796][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4876.394798][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4876.394800][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4876.394801][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4876.394802][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4876.394803][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4876.394804][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4876.394806][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4876.394810][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4876.394811][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4876.394812][    C2] PKRU: 55555554
[ 4876.394813][    C2] Call Trace:
[ 4876.394815][    C2]  <TASK>
[ 4876.394818][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4876.394823][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4876.394825][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4876.394829][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4876.394833][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4876.394835][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4876.394837][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4876.394840][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4876.394843][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4876.394844][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4876.394847][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4876.394850][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4876.394852][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4876.394854][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4876.394856][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4876.394858][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4876.394863][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4876.394865][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4876.394867][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4876.394869][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4876.394871][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4876.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4876.394878][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4876.394880][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4876.394884][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4876.394886][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4876.394888][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4876.394890][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4876.394893][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4876.394895][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4876.394897][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4876.394899][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4876.394901][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4876.394903][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4876.394905][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4876.394907][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4876.394908][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4876.394910][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4876.394912][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4876.394914][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4876.394916][    C2]  vfs_write (fs/read_write.c:686)
[ 4876.394919][    C2]  ksys_write (fs/read_write.c:739)
[ 4876.394921][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4876.394923][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4876.394925][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4876.394927][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4876.394930][    C2] RIP: 0033:0x7f814975fc5e
[ 4876.394933][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4876.394935][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4876.394936][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4876.394937][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4876.394938][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4876.394939][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4876.394940][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4877.968624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4877.968874][    C2] rcu: 2-....: (3924641 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1496219
| [ 4877.969087][    C2] rcu: (t=3926196 jiffies g=521497 q=82503 ncpus=4)
| [ 4877.969220][    C2] Tainted: [L]=SOFTLOCKUP
[ 4877.969222][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4877.969223][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4877.969226][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4877.969228][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4877.969230][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4877.969231][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4877.969232][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4877.969233][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4877.969234][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4877.969236][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4877.969240][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4877.969241][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4877.969242][    C2] PKRU: 55555554
[ 4877.969242][    C2] Call Trace:
[ 4877.969243][    C2]  <TASK>
[ 4877.969244][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4877.969247][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4877.969249][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4877.969252][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4877.969254][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4877.969256][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4877.969258][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4877.969261][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4877.969264][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4877.969265][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4877.969268][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4877.969270][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4877.969273][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4877.969275][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4877.969277][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4877.969279][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4877.969281][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4877.969283][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4877.969285][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4877.969288][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4877.969289][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4877.969292][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4877.969295][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4877.969297][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4877.969299][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4877.969300][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4877.969302][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4877.969304][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4877.969305][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4877.969307][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4877.969309][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4877.969311][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4877.969313][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4877.969315][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4877.969317][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4877.969318][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4877.969320][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4877.969322][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4877.969324][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4877.969325][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4877.969328][    C2]  vfs_write (fs/read_write.c:686)
[ 4877.969330][    C2]  ksys_write (fs/read_write.c:739)
[ 4877.969332][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4877.969333][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4877.969336][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4877.969337][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4877.969339][    C2] RIP: 0033:0x7f814975fc5e
[ 4877.969341][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4877.969342][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4877.969344][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4877.969345][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4877.969346][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4877.969347][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4877.969348][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4904.394778][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4904.394780][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4904.394784][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4904.394794][    C2] Tainted: [L]=SOFTLOCKUP
[ 4904.394795][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4904.394798][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4904.394801][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4904.394803][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4904.394805][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4904.394806][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4904.394807][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4904.394808][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4904.394809][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4904.394812][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4904.394815][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4904.394817][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4904.394818][    C2] PKRU: 55555554
[ 4904.394819][    C2] Call Trace:
[ 4904.394823][    C2]  <TASK>
[ 4904.394826][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4904.394831][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4904.394833][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4904.394837][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4904.394841][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4904.394843][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4904.394846][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4904.394849][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4904.394852][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4904.394854][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4904.394857][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4904.394859][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4904.394862][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4904.394864][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4904.394866][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4904.394868][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4904.394873][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4904.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4904.394877][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4904.394880][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4904.394882][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4904.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4904.394889][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4904.394891][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4904.394895][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4904.394898][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4904.394900][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4904.394902][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4904.394905][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4904.394906][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4904.394909][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4904.394911][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4904.394914][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4904.394915][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4904.394917][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4904.394920][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4904.394921][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4904.394923][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4904.394925][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4904.394927][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4904.394929][    C2]  vfs_write (fs/read_write.c:686)
[ 4904.394932][    C2]  ksys_write (fs/read_write.c:739)
[ 4904.394934][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4904.394936][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4904.394938][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4904.394941][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4904.394945][    C2] RIP: 0033:0x7f814975fc5e
[ 4904.394950][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4904.394951][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4904.394953][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4904.394954][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4904.394955][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4904.394956][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4904.394957][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4932.394770][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4932.394772][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4932.394775][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4932.394784][    C2] Tainted: [L]=SOFTLOCKUP
[ 4932.394786][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4932.394787][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4932.394791][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4932.394793][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4932.394795][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4932.394796][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4932.394797][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4932.394798][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4932.394799][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4932.394802][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4932.394805][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4932.394806][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4932.394807][    C2] PKRU: 55555554
[ 4932.394808][    C2] Call Trace:
[ 4932.394812][    C2]  <TASK>
[ 4932.394816][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4932.394820][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4932.394822][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4932.394827][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4932.394830][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4932.394832][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4932.394835][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4932.394837][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4932.394841][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4932.394842][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4932.394845][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4932.394848][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4932.394850][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4932.394852][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4932.394854][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4932.394857][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4932.394861][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4932.394863][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4932.394865][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4932.394868][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4932.394870][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4932.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4932.394877][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4932.394879][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4932.394882][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4932.394885][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4932.394891][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4932.394893][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4932.394896][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4932.394898][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4932.394900][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4932.394902][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4932.394905][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4932.394907][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4932.394908][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4932.394910][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4932.394912][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4932.394914][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4932.394915][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4932.394917][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4932.394920][    C2]  vfs_write (fs/read_write.c:686)
[ 4932.394922][    C2]  ksys_write (fs/read_write.c:739)
[ 4932.394924][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4932.394926][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4932.394929][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4932.394932][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4932.394935][    C2] RIP: 0033:0x7f814975fc5e
[ 4932.394938][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4932.394940][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4932.394942][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4932.394943][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4932.394944][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4932.394944][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4932.394945][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4949.329078][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 4949.329205][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 4949.329316][    C2] NMI backtrace for cpu 2
| [ 4949.329327][    C2] Tainted: [L]=SOFTLOCKUP
[ 4949.329327][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4949.329330][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 4949.329335][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 4949.329337][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 4949.329340][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 4949.329341][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 4949.329342][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 4949.329343][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 4949.329344][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 4949.329347][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4949.329351][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4949.329352][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4949.329353][    C2] PKRU: 55555554
[ 4949.329354][    C2] Call Trace:
[ 4949.329357][    C2]  <IRQ>
[ 4949.329358][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 4949.329364][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 4949.329367][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 4949.329371][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 4949.329374][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 4949.329377][    C2]  </IRQ>
[ 4949.329378][    C2]  <TASK>
[ 4949.329378][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 4949.329381][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4949.329383][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4949.329384][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4949.329386][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4949.329386][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4949.329387][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4949.329388][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4949.329389][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4949.329390][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 4949.329393][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4949.329395][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4949.329397][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4949.329400][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4949.329402][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4949.329403][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4949.329406][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4949.329408][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4949.329411][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4949.329413][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4949.329416][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4949.329418][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4949.329421][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4949.329422][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4949.329424][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4949.329427][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4949.329429][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4949.329431][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4949.329433][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4949.329435][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4949.329437][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4949.329440][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4949.329443][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4949.329445][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4949.329447][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4949.329448][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4949.329450][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4949.329452][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4949.329453][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4949.329455][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4949.329457][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4949.329459][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4949.329461][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4949.329462][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4949.329464][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4949.329466][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4949.329467][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4949.329469][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4949.329471][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4949.329472][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4949.329475][    C2]  vfs_write (fs/read_write.c:686)
[ 4949.329477][    C2]  ksys_write (fs/read_write.c:739)
[ 4949.329479][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4949.329480][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4949.329483][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4949.329484][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4949.329486][    C2] RIP: 0033:0x7f814975fc5e
[ 4949.329488][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4949.329490][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4949.329491][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4949.329492][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4949.329493][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4949.329493][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4949.329494][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4955.972626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 4955.972867][    C2] rcu: 2-....: (4002612 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1527587
| [ 4955.973237][    C2] rcu: (t=4004200 jiffies g=521497 q=84089 ncpus=4)
| [ 4955.973403][    C2] Tainted: [L]=SOFTLOCKUP
[ 4955.973404][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4955.973405][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4955.973410][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4955.973411][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4955.973414][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4955.973416][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4955.973416][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4955.973417][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4955.973418][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4955.973420][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4955.973423][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4955.973424][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4955.973425][    C2] PKRU: 55555554
[ 4955.973426][    C2] Call Trace:
[ 4955.973427][    C2]  <TASK>
[ 4955.973428][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4955.973430][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4955.973432][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4955.973435][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4955.973437][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4955.973439][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4955.973441][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4955.973444][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4955.973447][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4955.973448][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4955.973451][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4955.973453][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4955.973456][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4955.973457][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4955.973460][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4955.973462][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4955.973464][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4955.973466][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4955.973468][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4955.973470][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4955.973472][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4955.973475][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4955.973477][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4955.973479][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4955.973481][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4955.973483][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4955.973484][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4955.973486][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4955.973488][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4955.973489][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4955.973491][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4955.973493][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4955.973495][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4955.973497][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4955.973498][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4955.973500][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4955.973501][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4955.973503][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4955.973505][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4955.973506][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4955.973509][    C2]  vfs_write (fs/read_write.c:686)
[ 4955.973511][    C2]  ksys_write (fs/read_write.c:739)
[ 4955.973513][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4955.973514][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4955.973517][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4955.973518][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4955.973520][    C2] RIP: 0033:0x7f814975fc5e
[ 4955.973522][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4955.973523][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4955.973524][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4955.973525][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4955.973526][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4955.973527][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4955.973528][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 4980.394763][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 4980.394765][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 4980.394767][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 4980.394775][    C2] Tainted: [L]=SOFTLOCKUP
[ 4980.394776][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4980.394777][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 4980.394780][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 4980.394781][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 4980.394783][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 4980.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 4980.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 4980.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 4980.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 4980.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 4980.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4980.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 4980.394795][    C2] PKRU: 55555554
[ 4980.394796][    C2] Call Trace:
[ 4980.394799][    C2]  <TASK>
[ 4980.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 4980.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 4980.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 4980.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 4980.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 4980.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4980.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 4980.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 4980.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 4980.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 4980.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 4980.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 4980.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 4980.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 4980.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 4980.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 4980.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 4980.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4980.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 4980.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 4980.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 4980.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4980.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 4980.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 4980.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 4980.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4980.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 4980.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 4980.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 4980.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4980.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 4980.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 4980.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 4980.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 4980.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 4980.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 4980.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 4980.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 4980.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 4980.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 4980.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 4980.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 4980.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 4980.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 4980.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 4980.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 4980.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 4980.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 4980.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 4980.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 4980.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 4980.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 4980.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 4980.394906][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5008.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5008.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5008.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5008.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 5008.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5008.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5008.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5008.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5008.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5008.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5008.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5008.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5008.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5008.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5008.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5008.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5008.394788][    C2] PKRU: 55555554
[ 5008.394788][    C2] Call Trace:
[ 5008.394791][    C2]  <TASK>
[ 5008.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5008.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5008.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5008.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5008.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5008.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5008.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5008.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5008.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5008.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5008.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5008.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5008.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5008.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5008.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5008.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5008.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5008.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5008.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5008.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5008.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5008.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5008.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5008.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5008.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5008.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5008.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5008.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5008.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5008.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5008.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5008.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5008.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5008.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5008.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5008.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5008.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5008.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5008.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5008.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5008.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 5008.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 5008.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5008.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5008.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5008.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5008.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 5008.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5008.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5008.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5008.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5008.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5008.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5008.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5033.976626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5033.976898][    C2] rcu: 2-....: (4080592 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1556241
| [ 5033.977231][    C2] rcu: (t=4082204 jiffies g=521497 q=85229 ncpus=4)
| [ 5033.977400][    C2] Tainted: [L]=SOFTLOCKUP
[ 5033.977401][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5033.977403][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5033.977407][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5033.977409][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5033.977412][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5033.977413][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5033.977414][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5033.977415][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5033.977416][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5033.977418][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5033.977421][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5033.977422][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5033.977423][    C2] PKRU: 55555554
[ 5033.977424][    C2] Call Trace:
[ 5033.977425][    C2]  <TASK>
[ 5033.977426][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5033.977429][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5033.977431][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5033.977434][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5033.977436][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5033.977438][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5033.977440][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5033.977442][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5033.977445][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5033.977447][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5033.977450][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5033.977452][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5033.977454][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5033.977456][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5033.977458][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5033.977460][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5033.977463][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5033.977465][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5033.977467][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5033.977469][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5033.977471][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5033.977474][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5033.977476][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5033.977478][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5033.977480][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5033.977482][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5033.977483][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5033.977485][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5033.977487][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5033.977488][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5033.977491][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5033.977492][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5033.977494][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5033.977496][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5033.977497][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5033.977499][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5033.977501][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5033.977503][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5033.977504][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5033.977506][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5033.977508][    C2]  vfs_write (fs/read_write.c:686)
[ 5033.977510][    C2]  ksys_write (fs/read_write.c:739)
[ 5033.977512][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5033.977514][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5033.977516][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5033.977518][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5033.977520][    C2] RIP: 0033:0x7f814975fc5e
[ 5033.977522][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5033.977523][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5033.977525][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5033.977526][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5033.977527][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5033.977527][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5033.977528][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5047.633099][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5047.633241][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5047.633371][    C2] NMI backtrace for cpu 2
| [ 5047.633381][    C2] Tainted: [L]=SOFTLOCKUP
[ 5047.633382][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5047.633384][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 5047.633389][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 5047.633391][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 5047.633394][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 5047.633395][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 5047.633396][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 5047.633397][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 5047.633398][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 5047.633401][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5047.633404][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5047.633405][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5047.633406][    C2] PKRU: 55555554
[ 5047.633407][    C2] Call Trace:
[ 5047.633410][    C2]  <IRQ>
[ 5047.633413][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5047.633415][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5047.633419][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5047.633421][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5047.633423][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5047.633427][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5047.633430][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5047.633433][    C2]  </IRQ>
[ 5047.633433][    C2]  <TASK>
[ 5047.633434][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5047.633436][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5047.633439][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5047.633440][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5047.633441][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5047.633442][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5047.633442][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5047.633443][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5047.633444][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5047.633446][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5047.633448][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5047.633450][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5047.633452][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5047.633455][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5047.633457][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5047.633459][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5047.633461][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5047.633464][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5047.633467][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5047.633469][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5047.633471][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5047.633474][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5047.633476][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5047.633478][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5047.633480][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5047.633482][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5047.633484][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5047.633486][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5047.633488][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5047.633490][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5047.633492][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5047.633495][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5047.633497][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5047.633499][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5047.633501][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5047.633503][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5047.633504][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5047.633506][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5047.633508][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5047.633509][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5047.633512][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5047.633513][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5047.633515][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5047.633517][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5047.633519][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5047.633520][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5047.633522][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5047.633524][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5047.633526][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5047.633527][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5047.633530][    C2]  vfs_write (fs/read_write.c:686)
[ 5047.633532][    C2]  ksys_write (fs/read_write.c:739)
[ 5047.633533][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5047.633535][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5047.633537][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5047.633539][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5047.633541][    C2] RIP: 0033:0x7f814975fc5e
[ 5047.633543][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5047.633544][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5047.633546][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5047.633547][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5047.633547][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5047.633548][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5047.633549][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5072.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5072.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5072.394772][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5072.394779][    C2] Tainted: [L]=SOFTLOCKUP
[ 5072.394780][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5072.394782][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5072.394785][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5072.394786][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5072.394788][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5072.394789][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5072.394790][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5072.394791][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5072.394792][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5072.394794][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5072.394798][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5072.394799][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5072.394800][    C2] PKRU: 55555554
[ 5072.394801][    C2] Call Trace:
[ 5072.394804][    C2]  <TASK>
[ 5072.394808][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5072.394811][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5072.394813][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5072.394815][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5072.394818][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5072.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5072.394822][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5072.394825][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5072.394828][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5072.394830][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5072.394832][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5072.394835][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5072.394837][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5072.394839][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5072.394841][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5072.394843][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5072.394846][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5072.394848][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5072.394850][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5072.394852][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5072.394854][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5072.394857][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5072.394859][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5072.394861][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5072.394863][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5072.394865][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5072.394866][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5072.394868][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5072.394870][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5072.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5072.394874][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5072.394876][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5072.394878][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5072.394879][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5072.394881][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5072.394883][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5072.394885][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5072.394887][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5072.394889][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5072.394890][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5072.394893][    C2]  vfs_write (fs/read_write.c:686)
[ 5072.394895][    C2]  ksys_write (fs/read_write.c:739)
[ 5072.394897][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5072.394898][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5072.394901][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5072.394903][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5072.394905][    C2] RIP: 0033:0x7f814975fc5e
[ 5072.394908][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5072.394909][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5072.394910][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5072.394911][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5072.394912][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5072.394913][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5072.394914][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5100.394762][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5100.394764][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5100.394766][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5100.394774][    C2] Tainted: [L]=SOFTLOCKUP
[ 5100.394775][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5100.394776][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5100.394779][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5100.394780][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5100.394782][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5100.394783][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5100.394784][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5100.394785][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5100.394786][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5100.394788][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5100.394792][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5100.394793][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5100.394794][    C2] PKRU: 55555554
[ 5100.394794][    C2] Call Trace:
[ 5100.394798][    C2]  <TASK>
[ 5100.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5100.394804][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5100.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5100.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5100.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5100.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5100.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5100.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5100.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5100.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5100.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5100.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5100.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5100.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5100.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5100.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5100.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5100.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5100.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5100.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5100.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5100.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5100.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5100.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5100.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5100.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5100.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5100.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5100.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5100.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5100.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5100.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5100.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5100.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5100.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5100.394878][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5100.394880][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5100.394882][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5100.394884][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5100.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5100.394888][    C2]  vfs_write (fs/read_write.c:686)
[ 5100.394890][    C2]  ksys_write (fs/read_write.c:739)
[ 5100.394892][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5100.394894][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5100.394896][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5100.394898][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5100.394900][    C2] RIP: 0033:0x7f814975fc5e
[ 5100.394903][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5100.394904][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5100.394905][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5100.394906][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5100.394907][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5100.394908][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5100.394909][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5111.980626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5111.980838][    C2] rcu: 2-....: (4158562 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1594816
| [ 5111.981051][    C2] rcu: (t=4160208 jiffies g=521497 q=86820 ncpus=4)
| [ 5111.981261][    C2] Tainted: [L]=SOFTLOCKUP
[ 5111.981262][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5111.981263][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5111.981267][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5111.981269][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5111.981271][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5111.981272][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5111.981273][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5111.981274][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5111.981275][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5111.981277][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5111.981280][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5111.981281][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5111.981282][    C2] PKRU: 55555554
[ 5111.981283][    C2] Call Trace:
[ 5111.981284][    C2]  <TASK>
[ 5111.981285][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5111.981287][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5111.981290][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5111.981292][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5111.981294][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5111.981296][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5111.981298][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5111.981301][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5111.981304][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5111.981306][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5111.981308][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5111.981311][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5111.981313][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5111.981315][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5111.981317][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5111.981319][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5111.981321][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5111.981324][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5111.981326][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5111.981328][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5111.981329][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5111.981333][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5111.981335][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5111.981337][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5111.981339][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5111.981341][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5111.981342][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5111.981344][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5111.981346][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5111.981347][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5111.981350][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5111.981351][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5111.981353][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5111.981355][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5111.981357][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5111.981358][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5111.981360][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5111.981362][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5111.981363][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5111.981365][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5111.981368][    C2]  vfs_write (fs/read_write.c:686)
[ 5111.981370][    C2]  ksys_write (fs/read_write.c:739)
[ 5111.981372][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5111.981373][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5111.981376][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5111.981377][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5111.981379][    C2] RIP: 0033:0x7f814975fc5e
[ 5111.981381][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5111.981382][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5111.981383][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5111.981384][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5111.981385][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5111.981386][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5111.981386][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5136.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5136.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5136.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5136.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 5136.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5136.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5136.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5136.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5136.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5136.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5136.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5136.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5136.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5136.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5136.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5136.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5136.394789][    C2] PKRU: 55555554
[ 5136.394789][    C2] Call Trace:
[ 5136.394792][    C2]  <TASK>
[ 5136.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5136.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5136.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5136.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5136.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5136.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5136.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5136.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5136.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5136.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5136.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5136.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5136.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5136.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5136.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5136.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5136.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5136.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5136.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5136.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5136.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5136.394846][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5136.394848][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5136.394850][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5136.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5136.394854][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5136.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5136.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5136.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5136.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5136.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5136.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5136.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5136.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5136.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5136.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5136.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5136.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5136.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5136.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5136.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 5136.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 5136.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5136.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5136.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5136.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5136.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 5136.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5136.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5136.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5136.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5136.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5136.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5136.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5145.936988][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5145.937121][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5145.937280][    C2] NMI backtrace for cpu 2
| [ 5145.937290][    C2] Tainted: [L]=SOFTLOCKUP
[ 5145.937291][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5145.937293][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 5145.937298][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 5145.937300][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 5145.937302][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 5145.937303][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 5145.937304][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 5145.937305][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 5145.937306][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 5145.937309][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5145.937313][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5145.937314][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5145.937315][    C2] PKRU: 55555554
[ 5145.937315][    C2] Call Trace:
[ 5145.937319][    C2]  <IRQ>
[ 5145.937322][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5145.937324][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5145.937327][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5145.937329][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5145.937331][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5145.937333][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5145.937336][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5145.937338][    C2]  </IRQ>
[ 5145.937338][    C2]  <TASK>
[ 5145.937339][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5145.937342][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5145.937344][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5145.937345][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5145.937346][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5145.937347][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5145.937347][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5145.937348][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5145.937349][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5145.937350][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5145.937353][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5145.937355][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5145.937357][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5145.937359][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5145.937362][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5145.937364][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5145.937366][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5145.937369][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5145.937371][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5145.937373][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5145.937376][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5145.937378][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5145.937380][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5145.937382][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5145.937384][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5145.937386][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5145.937389][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5145.937390][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5145.937393][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5145.937395][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5145.937396][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5145.937399][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5145.937401][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5145.937403][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5145.937405][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5145.937407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5145.937408][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5145.937410][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5145.937412][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5145.937413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5145.937415][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5145.937417][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5145.937419][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5145.937420][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5145.937422][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5145.937424][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5145.937425][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5145.937427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5145.937429][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5145.937430][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5145.937433][    C2]  vfs_write (fs/read_write.c:686)
[ 5145.937435][    C2]  ksys_write (fs/read_write.c:739)
[ 5145.937436][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5145.937438][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5145.937440][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5145.937442][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5145.937444][    C2] RIP: 0033:0x7f814975fc5e
[ 5145.937446][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5145.937447][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5145.937449][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5145.937450][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5145.937450][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5145.937451][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5145.937452][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5172.394780][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5172.394782][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5172.394786][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5172.394796][    C2] Tainted: [L]=SOFTLOCKUP
[ 5172.394797][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5172.394799][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5172.394803][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5172.394805][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5172.394807][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5172.394809][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5172.394810][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5172.394811][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5172.394812][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5172.394815][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5172.394818][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5172.394819][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5172.394821][    C2] PKRU: 55555554
[ 5172.394821][    C2] Call Trace:
[ 5172.394825][    C2]  <TASK>
[ 5172.394829][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5172.394835][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5172.394837][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5172.394841][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5172.394845][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5172.394847][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5172.394850][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5172.394853][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5172.394856][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5172.394858][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5172.394860][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5172.394863][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5172.394866][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5172.394868][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5172.394870][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5172.394872][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5172.394876][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5172.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5172.394880][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5172.394883][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5172.394885][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5172.394888][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5172.394892][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5172.394894][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5172.394898][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5172.394901][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5172.394903][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5172.394905][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5172.394908][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5172.394910][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5172.394913][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5172.394914][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5172.394917][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5172.394919][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5172.394920][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5172.394923][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5172.394925][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5172.394927][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5172.394928][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5172.394930][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5172.394933][    C2]  vfs_write (fs/read_write.c:686)
[ 5172.394935][    C2]  ksys_write (fs/read_write.c:739)
[ 5172.394937][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5172.394939][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5172.394942][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5172.394944][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5172.394948][    C2] RIP: 0033:0x7f814975fc5e
[ 5172.394953][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5172.394954][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5172.394956][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5172.394957][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5172.394958][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5172.394959][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5172.394960][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5189.984626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5189.984849][    C2] rcu: 2-....: (4236532 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1629862
| [ 5189.985111][    C2] rcu: (t=4238212 jiffies g=521497 q=88411 ncpus=4)
| [ 5189.985293][    C2] Tainted: [L]=SOFTLOCKUP
[ 5189.985294][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5189.985296][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5189.985308][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5189.985310][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5189.985313][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5189.985314][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5189.985315][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5189.985316][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5189.985317][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5189.985319][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5189.985323][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5189.985324][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5189.985325][    C2] PKRU: 55555554
[ 5189.985326][    C2] Call Trace:
[ 5189.985326][    C2]  <TASK>
[ 5189.985328][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5189.985332][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5189.985335][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5189.985339][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5189.985342][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5189.985344][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5189.985347][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5189.985349][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5189.985352][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5189.985354][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5189.985357][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5189.985359][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5189.985361][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5189.985363][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5189.985365][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5189.985368][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5189.985372][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5189.985374][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5189.985376][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5189.985378][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5189.985380][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5189.985383][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5189.985387][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5189.985389][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5189.985392][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5189.985395][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5189.985397][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5189.985399][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5189.985401][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5189.985403][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5189.985405][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5189.985407][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5189.985410][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5189.985412][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5189.985413][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5189.985415][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5189.985417][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5189.985419][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5189.985420][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5189.985422][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5189.985424][    C2]  vfs_write (fs/read_write.c:686)
[ 5189.985427][    C2]  ksys_write (fs/read_write.c:739)
[ 5189.985428][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5189.985430][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5189.985432][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5189.985435][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5189.985437][    C2] RIP: 0033:0x7f814975fc5e
[ 5189.985440][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5189.985441][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5189.985443][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5189.985444][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5189.985445][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5189.985445][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5189.985446][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5216.394762][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5216.394764][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5216.394766][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5216.394773][    C2] Tainted: [L]=SOFTLOCKUP
[ 5216.394774][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5216.394775][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5216.394778][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5216.394780][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5216.394781][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5216.394783][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5216.394783][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5216.394784][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5216.394785][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5216.394788][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5216.394792][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5216.394793][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5216.394794][    C2] PKRU: 55555554
[ 5216.394794][    C2] Call Trace:
[ 5216.394798][    C2]  <TASK>
[ 5216.394800][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5216.394803][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5216.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5216.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5216.394811][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5216.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5216.394815][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5216.394818][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5216.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5216.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5216.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5216.394827][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5216.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5216.394831][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5216.394833][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5216.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5216.394838][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5216.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5216.394842][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5216.394844][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5216.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5216.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5216.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5216.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5216.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5216.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5216.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5216.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5216.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5216.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5216.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5216.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5216.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5216.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5216.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5216.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5216.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5216.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5216.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5216.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5216.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 5216.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 5216.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5216.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5216.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5216.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5216.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 5216.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5216.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5216.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5216.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5216.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5216.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5216.394906][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5244.240959][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5244.241080][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5244.241257][    C2] NMI backtrace for cpu 2
| [ 5244.241267][    C2] Tainted: [L]=SOFTLOCKUP
[ 5244.241268][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5244.241270][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 5244.241275][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 5244.241277][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 5244.241280][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 5244.241281][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 5244.241282][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 5244.241283][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 5244.241284][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 5244.241287][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5244.241291][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5244.241292][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5244.241292][    C2] PKRU: 55555554
[ 5244.241293][    C2] Call Trace:
[ 5244.241297][    C2]  <IRQ>
[ 5244.241300][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5244.241302][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5244.241306][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5244.241307][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5244.241310][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5244.241314][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5244.241317][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5244.241320][    C2]  </IRQ>
[ 5244.241320][    C2]  <TASK>
[ 5244.241321][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5244.241324][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5244.241326][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5244.241327][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5244.241328][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5244.241329][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5244.241330][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5244.241331][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5244.241331][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5244.241333][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5244.241335][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5244.241338][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5244.241340][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5244.241343][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5244.241345][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5244.241347][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5244.241349][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5244.241352][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5244.241355][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5244.241356][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5244.241359][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5244.241362][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5244.241364][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5244.241366][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5244.241368][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5244.241370][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5244.241372][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5244.241374][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5244.241376][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5244.241378][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5244.241380][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5244.241383][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5244.241385][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5244.241387][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5244.241389][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5244.241391][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5244.241392][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5244.241394][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5244.241396][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5244.241397][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5244.241400][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5244.241402][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5244.241403][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5244.241405][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5244.241407][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5244.241408][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5244.241410][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5244.241412][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5244.241413][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5244.241415][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5244.241418][    C2]  vfs_write (fs/read_write.c:686)
[ 5244.241420][    C2]  ksys_write (fs/read_write.c:739)
[ 5244.241421][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5244.241423][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5244.241426][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5244.241427][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5244.241429][    C2] RIP: 0033:0x7f814975fc5e
[ 5244.241431][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5244.241432][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5244.241434][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5244.241435][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5244.241435][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5244.241436][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5244.241437][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5267.987627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5267.987874][    C2] rcu: 2-....: (4314510 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1659136
| [ 5267.988191][    C2] rcu: (t=4316215 jiffies g=521497 q=89612 ncpus=4)
| [ 5267.988342][    C2] Tainted: [L]=SOFTLOCKUP
[ 5267.988343][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5267.988345][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5267.988350][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5267.988351][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5267.988354][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5267.988356][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5267.988356][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5267.988357][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5267.988358][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5267.988360][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5267.988364][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5267.988365][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5267.988366][    C2] PKRU: 55555554
[ 5267.988367][    C2] Call Trace:
[ 5267.988368][    C2]  <TASK>
[ 5267.988369][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5267.988371][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5267.988373][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5267.988376][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5267.988378][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5267.988380][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5267.988382][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5267.988384][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5267.988388][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5267.988389][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5267.988392][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5267.988394][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5267.988397][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5267.988398][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5267.988400][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5267.988402][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5267.988405][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5267.988407][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5267.988409][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5267.988411][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5267.988412][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5267.988415][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5267.988418][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5267.988420][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5267.988422][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5267.988423][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5267.988425][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5267.988427][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5267.988428][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5267.988430][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5267.988432][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5267.988434][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5267.988435][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5267.988437][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5267.988439][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5267.988440][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5267.988442][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5267.988444][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5267.988445][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5267.988447][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5267.988449][    C2]  vfs_write (fs/read_write.c:686)
[ 5267.988451][    C2]  ksys_write (fs/read_write.c:739)
[ 5267.988453][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5267.988455][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5267.988457][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5267.988459][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5267.988460][    C2] RIP: 0033:0x7f814975fc5e
[ 5267.988462][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5267.988463][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5267.988465][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5267.988466][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5267.988467][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5267.988467][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5267.988468][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5292.394761][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5292.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5292.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5292.394772][    C2] Tainted: [L]=SOFTLOCKUP
[ 5292.394773][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5292.394774][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5292.394777][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5292.394779][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5292.394780][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5292.394782][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5292.394783][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5292.394784][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5292.394784][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5292.394787][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5292.394791][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5292.394792][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5292.394793][    C2] PKRU: 55555554
[ 5292.394794][    C2] Call Trace:
[ 5292.394797][    C2]  <TASK>
[ 5292.394800][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5292.394803][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5292.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5292.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5292.394810][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5292.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5292.394814][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5292.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5292.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5292.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5292.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5292.394827][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5292.394829][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5292.394831][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5292.394833][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5292.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5292.394838][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5292.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5292.394842][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5292.394844][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5292.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5292.394849][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5292.394851][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5292.394853][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5292.394855][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5292.394857][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5292.394858][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5292.394860][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5292.394862][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5292.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5292.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5292.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5292.394869][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5292.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5292.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5292.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5292.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5292.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5292.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5292.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5292.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 5292.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 5292.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5292.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5292.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5292.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5292.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 5292.394898][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5292.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5292.394901][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5292.394902][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5292.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5292.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5292.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5320.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5320.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5320.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5320.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 5320.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5320.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5320.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5320.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5320.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5320.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5320.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5320.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5320.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5320.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5320.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5320.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5320.394789][    C2] PKRU: 55555554
[ 5320.394790][    C2] Call Trace:
[ 5320.394793][    C2]  <TASK>
[ 5320.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5320.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5320.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5320.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5320.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5320.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5320.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5320.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5320.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5320.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5320.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5320.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5320.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5320.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5320.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5320.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5320.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5320.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5320.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5320.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5320.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5320.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5320.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5320.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5320.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5320.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5320.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5320.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5320.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5320.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5320.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5320.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5320.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5320.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5320.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5320.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5320.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5320.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5320.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5320.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5320.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 5320.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 5320.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5320.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5320.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5320.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5320.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 5320.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5320.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5320.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5320.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5320.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5320.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5320.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5342.543981][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5342.544180][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5342.544292][    C2] NMI backtrace for cpu 2
| [ 5342.544303][    C2] Tainted: [L]=SOFTLOCKUP
[ 5342.544304][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5342.544305][    C2] RIP: 0010:vring_interrupt (drivers/virtio/virtio_ring.c:2682 drivers/virtio/virtio_ring.c:2697)
[ 5342.544311][    C2] Code: b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 0f b6 04 01 48 89 f9 83 e1 07 38 c8 7f 08 84 c0 0f 85 8f 02 00 00 0f b6 42 40 <3c> 01 0f 87 48 22 8f fe 48 8d 7a 50 48 89 f9 48 c1 e9 03 a8 01 48
All code
========
   0:	b8 00 00 00 00       	mov    $0x0,%eax
   5:	00 fc                	add    %bh,%ah
   7:	ff                   	lcall  (bad)
   8:	df 48 89             	fisttps -0x77(%rax)
   b:	f9                   	stc
   c:	48 c1 e9 03          	shr    $0x3,%rcx
  10:	0f b6 04 01          	movzbl (%rcx,%rax,1),%eax
  14:	48 89 f9             	mov    %rdi,%rcx
  17:	83 e1 07             	and    $0x7,%ecx
  1a:	38 c8                	cmp    %cl,%al
  1c:	7f 08                	jg     0x26
  1e:	84 c0                	test   %al,%al
  20:	0f 85 8f 02 00 00    	jne    0x2b5
  26:	0f b6 42 40          	movzbl 0x40(%rdx),%eax
  2a:*	3c 01                	cmp    $0x1,%al		<-- trapping instruction
  2c:	0f 87 48 22 8f fe    	ja     0xfffffffffe8f227a
  32:	48 8d 7a 50          	lea    0x50(%rdx),%rdi
  36:	48 89 f9             	mov    %rdi,%rcx
  39:	48 c1 e9 03          	shr    $0x3,%rcx
  3d:	a8 01                	test   $0x1,%al
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	3c 01                	cmp    $0x1,%al
   2:	0f 87 48 22 8f fe    	ja     0xfffffffffe8f2250
   8:	48 8d 7a 50          	lea    0x50(%rdx),%rdi
   c:	48 89 f9             	mov    %rdi,%rcx
   f:	48 c1 e9 03          	shr    $0x3,%rcx
  13:	a8 01                	test   $0x1,%al
  15:	48                   	rex.W
[ 5342.544313][    C2] RSP: 0018:ffa0000000218ea8 EFLAGS: 00000046
[ 5342.544315][    C2] RAX: 0000000000000000 RBX: ff11000005ff8d00 RCX: 0000000000000000
[ 5342.544316][    C2] RDX: ff11000005ff8d00 RSI: ff11000005ff8d00 RDI: ff11000005ff8d40
[ 5342.544317][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff5b921ca
[ 5342.544318][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: ff11000005f82508
[ 5342.544319][    C2] R13: 0000000000000032 R14: dffffc0000000000 R15: ff11000005e55580
[ 5342.544322][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5342.544325][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5342.544326][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5342.544327][    C2] PKRU: 55555554
[ 5342.544328][    C2] Call Trace:
[ 5342.544332][    C2]  <IRQ>
[ 5342.544335][    C2]  vm_interrupt (drivers/virtio/virtio_mmio.c:303 (discriminator 1))
[ 5342.544338][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5342.544339][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5342.544342][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5342.544344][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5342.544346][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5342.544350][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5342.544353][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5342.544355][    C2]  </IRQ>
[ 5342.544356][    C2]  <TASK>
[ 5342.544357][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5342.544359][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5342.544361][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5342.544363][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5342.544364][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5342.544365][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5342.544365][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5342.544366][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5342.544367][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5342.544368][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5342.544371][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5342.544373][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5342.544375][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5342.544377][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5342.544379][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5342.544381][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5342.544384][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5342.544386][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5342.544389][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5342.544391][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5342.544393][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5342.544396][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5342.544398][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5342.544400][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5342.544402][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5342.544404][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5342.544406][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5342.544408][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5342.544410][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5342.544412][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5342.544414][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5342.544417][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5342.544419][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5342.544421][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5342.544431][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5342.544432][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5342.544434][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5342.544436][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5342.544438][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5342.544439][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5342.544442][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5342.544443][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5342.544445][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5342.544447][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5342.544448][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5342.544450][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5342.544452][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5342.544453][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5342.544455][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5342.544457][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5342.544459][    C2]  vfs_write (fs/read_write.c:686)
[ 5342.544461][    C2]  ksys_write (fs/read_write.c:739)
[ 5342.544463][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5342.544465][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5342.544467][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5342.544469][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5342.544470][    C2] RIP: 0033:0x7f814975fc5e
[ 5342.544473][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5342.544474][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5342.544475][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5342.544476][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5342.544477][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5342.544478][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5342.544478][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5345.991625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5345.991893][    C2] rcu: 2-....: (4392480 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1687921
| [ 5345.992104][    C2] rcu: (t=4394219 jiffies g=521497 q=91210 ncpus=4)
| [ 5345.992256][    C2] Tainted: [L]=SOFTLOCKUP
[ 5345.992257][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5345.992258][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5345.992262][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5345.992263][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5345.992265][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5345.992267][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5345.992268][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5345.992269][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5345.992269][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5345.992271][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5345.992274][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5345.992275][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5345.992276][    C2] PKRU: 55555554
[ 5345.992276][    C2] Call Trace:
[ 5345.992277][    C2]  <TASK>
[ 5345.992278][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5345.992281][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5345.992283][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5345.992285][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5345.992287][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5345.992289][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5345.992292][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5345.992294][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5345.992297][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5345.992299][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5345.992301][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5345.992304][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5345.992306][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5345.992308][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5345.992310][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5345.992312][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5345.992314][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5345.992316][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5345.992319][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5345.992321][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5345.992322][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5345.992325][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5345.992328][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5345.992329][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5345.992331][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5345.992333][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5345.992334][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5345.992336][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5345.992338][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5345.992339][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5345.992342][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5345.992343][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5345.992345][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5345.992347][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5345.992348][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5345.992350][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5345.992352][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5345.992354][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5345.992355][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5345.992357][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5345.992360][    C2]  vfs_write (fs/read_write.c:686)
[ 5345.992362][    C2]  ksys_write (fs/read_write.c:739)
[ 5345.992363][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5345.992365][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5345.992367][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5345.992369][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5345.992371][    C2] RIP: 0033:0x7f814975fc5e
[ 5345.992372][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5345.992374][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5345.992375][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5345.992376][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5345.992377][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5345.992377][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5345.992378][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5372.394763][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5372.394765][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5372.394768][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5372.394775][    C2] Tainted: [L]=SOFTLOCKUP
[ 5372.394776][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5372.394777][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5372.394780][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5372.394781][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5372.394783][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5372.394784][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5372.394785][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5372.394786][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5372.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5372.394789][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5372.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5372.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5372.394795][    C2] PKRU: 55555554
[ 5372.394796][    C2] Call Trace:
[ 5372.394799][    C2]  <TASK>
[ 5372.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5372.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5372.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5372.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5372.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5372.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5372.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5372.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5372.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5372.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5372.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5372.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5372.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5372.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5372.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5372.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5372.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5372.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5372.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5372.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5372.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5372.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5372.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5372.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5372.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5372.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5372.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5372.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5372.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5372.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5372.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5372.394868][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5372.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5372.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5372.394873][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5372.394875][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5372.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5372.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5372.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5372.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5372.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 5372.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 5372.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5372.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5372.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5372.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5372.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 5372.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5372.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5372.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5372.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5372.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5372.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5372.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5400.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5400.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5400.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5400.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 5400.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5400.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5400.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5400.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5400.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5400.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5400.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5400.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5400.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5400.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5400.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5400.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5400.394788][    C2] PKRU: 55555554
[ 5400.394789][    C2] Call Trace:
[ 5400.394792][    C2]  <TASK>
[ 5400.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5400.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5400.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5400.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5400.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5400.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5400.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5400.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5400.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5400.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5400.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5400.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5400.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5400.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5400.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5400.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5400.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5400.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5400.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5400.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5400.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5400.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5400.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5400.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5400.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5400.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5400.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5400.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5400.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5400.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5400.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5400.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5400.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5400.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5400.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5400.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5400.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5400.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5400.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5400.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5400.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 5400.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 5400.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5400.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5400.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5400.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5400.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 5400.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5400.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5400.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5400.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5400.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5400.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5400.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5423.994625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5423.994971][    C2] rcu: 2-....: (4470459 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1716855
| [ 5423.995188][    C2] rcu: (t=4472222 jiffies g=521497 q=92347 ncpus=4)
| [ 5423.995324][    C2] Tainted: [L]=SOFTLOCKUP
[ 5423.995324][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5423.995326][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5423.995330][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5423.995332][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5423.995334][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5423.995335][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5423.995336][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5423.995337][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5423.995338][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5423.995340][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5423.995344][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5423.995345][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5423.995346][    C2] PKRU: 55555554
[ 5423.995347][    C2] Call Trace:
[ 5423.995348][    C2]  <TASK>
[ 5423.995349][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5423.995351][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5423.995354][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5423.995356][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5423.995358][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5423.995360][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5423.995363][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5423.995365][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5423.995368][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5423.995370][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5423.995372][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5423.995375][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5423.995377][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5423.995379][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5423.995381][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5423.995383][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5423.995385][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5423.995387][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5423.995389][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5423.995391][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5423.995393][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5423.995396][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5423.995398][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5423.995400][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5423.995402][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5423.995404][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5423.995405][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5423.995407][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5423.995409][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5423.995410][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5423.995413][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5423.995414][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5423.995416][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5423.995418][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5423.995419][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5423.995421][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5423.995423][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5423.995424][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5423.995426][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5423.995427][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5423.995430][    C2]  vfs_write (fs/read_write.c:686)
[ 5423.995432][    C2]  ksys_write (fs/read_write.c:739)
[ 5423.995434][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5423.995435][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5423.995438][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5423.995439][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5423.995441][    C2] RIP: 0033:0x7f814975fc5e
[ 5423.995443][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5423.995444][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5423.995446][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5423.995447][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5423.995448][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5423.995448][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5423.995449][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5440.848065][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5440.848259][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5440.848401][    C2] NMI backtrace for cpu 2
| [ 5440.848411][    C2] Tainted: [L]=SOFTLOCKUP
[ 5440.848412][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5440.848414][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 5440.848418][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 5440.848419][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 5440.848422][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 5440.848423][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 5440.848424][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 5440.848425][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 5440.848426][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 5440.848429][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5440.848432][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5440.848433][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5440.848434][    C2] PKRU: 55555554
[ 5440.848435][    C2] Call Trace:
[ 5440.848439][    C2]  <IRQ>
[ 5440.848442][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5440.848444][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5440.848447][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5440.848449][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5440.848451][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5440.848453][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5440.848456][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5440.848458][    C2]  </IRQ>
[ 5440.848458][    C2]  <TASK>
[ 5440.848459][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5440.848462][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5440.848464][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5440.848465][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5440.848466][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5440.848467][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5440.848468][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5440.848469][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5440.848469][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5440.848471][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5440.848474][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5440.848475][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5440.848478][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5440.848480][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5440.848482][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5440.848484][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5440.848486][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5440.848489][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5440.848492][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5440.848494][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5440.848496][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5440.848499][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5440.848501][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5440.848503][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5440.848505][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5440.848507][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5440.848509][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5440.848511][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5440.848513][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5440.848515][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5440.848517][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5440.848520][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5440.848522][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5440.848524][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5440.848526][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5440.848528][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5440.848529][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5440.848531][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5440.848533][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5440.848534][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5440.848537][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5440.848538][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5440.848540][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5440.848542][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5440.848543][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5440.848545][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5440.848546][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5440.848548][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5440.848550][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5440.848551][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5440.848554][    C2]  vfs_write (fs/read_write.c:686)
[ 5440.848556][    C2]  ksys_write (fs/read_write.c:739)
[ 5440.848558][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5440.848560][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5440.848562][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5440.848564][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5440.848565][    C2] RIP: 0033:0x7f814975fc5e
[ 5440.848568][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5440.848569][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5440.848570][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5440.848571][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5440.848572][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5440.848572][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5440.848573][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5468.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5468.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5468.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5468.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 5468.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5468.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5468.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5468.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5468.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5468.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5468.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5468.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5468.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5468.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5468.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5468.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5468.394797][    C2] PKRU: 55555554
[ 5468.394798][    C2] Call Trace:
[ 5468.394801][    C2]  <TASK>
[ 5468.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5468.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5468.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5468.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5468.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5468.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5468.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5468.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5468.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5468.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5468.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5468.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5468.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5468.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5468.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5468.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5468.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5468.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5468.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5468.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5468.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5468.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5468.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5468.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5468.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5468.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5468.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5468.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5468.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5468.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5468.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5468.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5468.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5468.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5468.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5468.394878][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5468.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5468.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5468.394883][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5468.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5468.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 5468.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 5468.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5468.394893][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5468.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5468.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5468.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 5468.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5468.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5468.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5468.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5468.394906][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5468.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5468.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5496.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5496.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5496.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5496.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 5496.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5496.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5496.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5496.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5496.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5496.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5496.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5496.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5496.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5496.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5496.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5496.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5496.394789][    C2] PKRU: 55555554
[ 5496.394790][    C2] Call Trace:
[ 5496.394794][    C2]  <TASK>
[ 5496.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5496.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5496.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5496.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5496.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5496.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5496.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5496.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5496.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5496.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5496.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5496.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5496.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5496.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5496.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5496.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5496.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5496.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5496.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5496.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5496.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5496.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5496.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5496.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5496.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5496.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5496.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5496.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5496.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5496.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5496.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5496.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5496.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5496.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5496.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5496.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5496.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5496.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5496.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5496.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5496.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 5496.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 5496.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5496.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5496.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5496.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5496.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 5496.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5496.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5496.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5496.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5496.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5496.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5496.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5501.997625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5501.997841][    C2] rcu: 2-....: (4548429 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1745502
| [ 5501.998056][    C2] rcu: (t=4550225 jiffies g=521497 q=93938 ncpus=4)
| [ 5501.998262][    C2] Tainted: [L]=SOFTLOCKUP
[ 5501.998263][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5501.998265][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5501.998268][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5501.998270][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5501.998272][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5501.998273][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5501.998274][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5501.998275][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5501.998276][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5501.998278][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5501.998281][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5501.998282][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5501.998283][    C2] PKRU: 55555554
[ 5501.998284][    C2] Call Trace:
[ 5501.998285][    C2]  <TASK>
[ 5501.998286][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5501.998288][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5501.998290][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5501.998293][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5501.998295][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5501.998297][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5501.998299][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5501.998302][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5501.998305][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5501.998306][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5501.998309][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5501.998312][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5501.998314][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5501.998315][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5501.998317][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5501.998319][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5501.998322][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5501.998324][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5501.998326][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5501.998328][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5501.998330][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5501.998333][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5501.998335][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5501.998337][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5501.998339][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5501.998340][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5501.998341][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5501.998344][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5501.998345][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5501.998347][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5501.998349][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5501.998351][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5501.998352][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5501.998354][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5501.998356][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5501.998358][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5501.998359][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5501.998361][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5501.998363][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5501.998364][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5501.998367][    C2]  vfs_write (fs/read_write.c:686)
[ 5501.998369][    C2]  ksys_write (fs/read_write.c:739)
[ 5501.998371][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5501.998372][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5501.998375][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5501.998376][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5501.998378][    C2] RIP: 0033:0x7f814975fc5e
[ 5501.998380][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5501.998381][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5501.998382][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5501.998383][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5501.998384][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5501.998385][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5501.998386][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5528.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5528.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5528.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5528.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 5528.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5528.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5528.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5528.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5528.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5528.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5528.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5528.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5528.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5528.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5528.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5528.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5528.394788][    C2] PKRU: 55555554
[ 5528.394789][    C2] Call Trace:
[ 5528.394792][    C2]  <TASK>
[ 5528.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5528.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5528.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5528.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5528.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5528.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5528.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5528.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5528.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5528.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5528.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5528.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5528.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5528.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5528.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5528.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5528.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5528.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5528.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5528.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5528.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5528.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5528.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5528.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5528.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5528.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5528.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5528.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5528.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5528.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5528.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5528.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5528.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5528.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5528.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5528.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5528.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5528.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5528.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5528.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5528.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 5528.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 5528.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5528.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5528.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5528.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5528.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 5528.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5528.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5528.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5528.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5528.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5528.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5528.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5539.152068][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5539.152198][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5539.152313][    C2] NMI backtrace for cpu 2
| [ 5539.152323][    C2] Tainted: [L]=SOFTLOCKUP
[ 5539.152323][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5539.152325][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 5539.152329][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 5539.152330][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 5539.152332][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 5539.152334][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 5539.152335][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 5539.152336][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 5539.152337][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 5539.152340][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5539.152343][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5539.152344][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5539.152345][    C2] PKRU: 55555554
[ 5539.152345][    C2] Call Trace:
[ 5539.152347][    C2]  <IRQ>
[ 5539.152350][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5539.152352][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5539.152355][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5539.152356][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5539.152359][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5539.152361][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5539.152363][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5539.152365][    C2]  </IRQ>
[ 5539.152366][    C2]  <TASK>
[ 5539.152367][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5539.152369][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5539.152371][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5539.152372][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5539.152373][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5539.152374][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5539.152374][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5539.152375][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5539.152376][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5539.152377][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5539.152380][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5539.152382][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5539.152384][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5539.152386][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5539.152388][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5539.152390][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5539.152392][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5539.152395][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5539.152398][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5539.152400][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5539.152402][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5539.152405][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5539.152407][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5539.152408][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5539.152410][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5539.152412][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5539.152415][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5539.152417][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5539.152419][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5539.152421][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5539.152423][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5539.152426][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5539.152428][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5539.152430][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5539.152432][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5539.152433][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5539.152435][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5539.152437][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5539.152439][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5539.152440][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5539.152442][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5539.152444][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5539.152446][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5539.152448][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5539.152449][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5539.152451][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5539.152453][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5539.152454][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5539.152456][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5539.152458][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5539.152460][    C2]  vfs_write (fs/read_write.c:686)
[ 5539.152462][    C2]  ksys_write (fs/read_write.c:739)
[ 5539.152464][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5539.152466][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5539.152468][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5539.152470][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5539.152471][    C2] RIP: 0033:0x7f814975fc5e
[ 5539.152473][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5539.152474][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5539.152476][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5539.152476][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5539.152477][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5539.152478][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5539.152479][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5564.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5564.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5564.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5564.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 5564.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5564.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5564.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5564.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5564.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5564.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5564.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5564.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5564.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5564.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5564.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5564.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5564.394796][    C2] PKRU: 55555554
[ 5564.394797][    C2] Call Trace:
[ 5564.394800][    C2]  <TASK>
[ 5564.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5564.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5564.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5564.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5564.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5564.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5564.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5564.394821][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5564.394824][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5564.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5564.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5564.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5564.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5564.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5564.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5564.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5564.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5564.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5564.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5564.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5564.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5564.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5564.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5564.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5564.394859][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5564.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5564.394862][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5564.394864][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5564.394866][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5564.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5564.394870][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5564.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5564.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5564.394875][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5564.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5564.394878][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5564.394880][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5564.394882][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5564.394883][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5564.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5564.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 5564.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 5564.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5564.394893][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5564.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5564.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5564.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 5564.394902][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5564.394903][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5564.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5564.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5564.394906][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5564.394907][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5564.394908][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5580.001625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5580.001813][    C2] rcu: 2-....: (4626400 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1773875
| [ 5580.002041][    C2] rcu: (t=4628229 jiffies g=521497 q=95529 ncpus=4)
| [ 5580.002158][    C2] Tainted: [L]=SOFTLOCKUP
[ 5580.002159][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5580.002161][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5580.002164][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5580.002166][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5580.002168][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5580.002170][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5580.002171][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5580.002171][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5580.002172][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5580.002175][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5580.002178][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5580.002179][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5580.002180][    C2] PKRU: 55555554
[ 5580.002180][    C2] Call Trace:
[ 5580.002181][    C2]  <TASK>
[ 5580.002182][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5580.002185][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5580.002187][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5580.002189][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5580.002192][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5580.002194][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5580.002196][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5580.002198][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5580.002201][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5580.002203][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5580.002205][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5580.002208][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5580.002210][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5580.002212][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5580.002214][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5580.002216][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5580.002219][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5580.002221][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5580.002223][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5580.002225][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5580.002226][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5580.002229][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5580.002231][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5580.002233][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5580.002235][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5580.002237][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5580.002238][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5580.002240][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5580.002242][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5580.002243][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5580.002246][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5580.002247][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5580.002249][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5580.002250][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5580.002252][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5580.002254][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5580.002255][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5580.002257][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5580.002259][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5580.002260][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5580.002263][    C2]  vfs_write (fs/read_write.c:686)
[ 5580.002265][    C2]  ksys_write (fs/read_write.c:739)
[ 5580.002267][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5580.002268][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5580.002270][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5580.002272][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5580.002274][    C2] RIP: 0033:0x7f814975fc5e
[ 5580.002276][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5580.002277][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5580.002278][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5580.002279][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5580.002280][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5580.002281][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5580.002281][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5604.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5604.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5604.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5604.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 5604.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5604.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5604.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5604.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5604.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5604.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5604.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5604.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5604.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5604.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5604.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5604.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5604.394789][    C2] PKRU: 55555554
[ 5604.394790][    C2] Call Trace:
[ 5604.394793][    C2]  <TASK>
[ 5604.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5604.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5604.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5604.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5604.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5604.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5604.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5604.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5604.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5604.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5604.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5604.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5604.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5604.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5604.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5604.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5604.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5604.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5604.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5604.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5604.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5604.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5604.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5604.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5604.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5604.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5604.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5604.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5604.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5604.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5604.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5604.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5604.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5604.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5604.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5604.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5604.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5604.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5604.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5604.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5604.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 5604.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 5604.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5604.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5604.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5604.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5604.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 5604.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5604.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5604.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5604.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5604.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5604.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5604.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5632.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5632.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5632.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5632.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 5632.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5632.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5632.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5632.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5632.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5632.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5632.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5632.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5632.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5632.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5632.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5632.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5632.394788][    C2] PKRU: 55555554
[ 5632.394788][    C2] Call Trace:
[ 5632.394792][    C2]  <TASK>
[ 5632.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5632.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5632.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5632.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5632.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5632.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5632.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5632.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5632.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5632.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5632.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5632.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5632.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5632.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5632.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5632.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5632.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5632.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5632.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5632.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5632.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5632.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5632.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5632.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5632.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5632.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5632.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5632.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5632.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5632.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5632.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5632.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5632.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5632.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5632.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5632.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5632.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5632.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5632.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5632.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5632.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 5632.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 5632.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5632.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5632.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5632.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5632.394894][    C2] RIP: 0033:0x7f814975fc5e
[ 5632.394896][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5632.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5632.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5632.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5632.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5632.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5632.394902][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5637.457052][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5637.457169][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5637.457282][    C2] NMI backtrace for cpu 2
| [ 5637.457291][    C2] Tainted: [L]=SOFTLOCKUP
[ 5637.457292][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5637.457294][    C2] RIP: 0010:vring_interrupt (drivers/virtio/virtio_ring.c:812 drivers/virtio/virtio_ring.c:2682 drivers/virtio/virtio_ring.c:2697)
[ 5637.457298][    C2] Code: 00 48 b8 00 00 00 00 00 fc ff df 48 8b 4a 70 48 8d 79 02 48 89 fe 48 c1 ee 03 0f b6 34 06 48 89 f8 83 e0 07 83 c0 01 40 38 f0 <7c> 09 40 84 f6 0f 85 34 01 00 00 66 44 3b 41 02 0f 85 a8 fe ff ff
All code
========
   0:	00 48 b8             	add    %cl,-0x48(%rax)
   3:	00 00                	add    %al,(%rax)
   5:	00 00                	add    %al,(%rax)
   7:	00 fc                	add    %bh,%ah
   9:	ff                   	lcall  (bad)
   a:	df 48 8b             	fisttps -0x75(%rax)
   d:	4a 70 48             	rex.WX jo 0x58
  10:	8d 79 02             	lea    0x2(%rcx),%edi
  13:	48 89 fe             	mov    %rdi,%rsi
  16:	48 c1 ee 03          	shr    $0x3,%rsi
  1a:	0f b6 34 06          	movzbl (%rsi,%rax,1),%esi
  1e:	48 89 f8             	mov    %rdi,%rax
  21:	83 e0 07             	and    $0x7,%eax
  24:	83 c0 01             	add    $0x1,%eax
  27:	40 38 f0             	cmp    %sil,%al
  2a:*	7c 09                	jl     0x35		<-- trapping instruction
  2c:	40 84 f6             	test   %sil,%sil
  2f:	0f 85 34 01 00 00    	jne    0x169
  35:	66 44 3b 41 02       	cmp    0x2(%rcx),%r8w
  3a:	0f 85 a8 fe ff ff    	jne    0xfffffffffffffee8

Code starting with the faulting instruction
===========================================
   0:	7c 09                	jl     0xb
   2:	40 84 f6             	test   %sil,%sil
   5:	0f 85 34 01 00 00    	jne    0x13f
   b:	66 44 3b 41 02       	cmp    0x2(%rcx),%r8w
  10:	0f 85 a8 fe ff ff    	jne    0xfffffffffffffebe
[ 5637.457300][    C2] RSP: 0018:ffa0000000218ea8 EFLAGS: 00000006
[ 5637.457302][    C2] RAX: 0000000000000003 RBX: ff11000006339c00 RCX: ff110000063d5000
[ 5637.457303][    C2] RDX: ff11000006339c00 RSI: 0000000000000000 RDI: ff110000063d5002
[ 5637.457305][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff5b921ca
[ 5637.457305][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: ff11000005f82508
[ 5637.457306][    C2] R13: 0000000000000032 R14: dffffc0000000000 R15: ff11000005e55580
[ 5637.457309][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5637.457312][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5637.457313][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5637.457314][    C2] PKRU: 55555554
[ 5637.457314][    C2] Call Trace:
[ 5637.457316][    C2]  <IRQ>
[ 5637.457319][    C2]  vm_interrupt (drivers/virtio/virtio_mmio.c:303 (discriminator 1))
[ 5637.457322][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5637.457323][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5637.457326][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5637.457328][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5637.457330][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5637.457332][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5637.457335][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5637.457337][    C2]  </IRQ>
[ 5637.457338][    C2]  <TASK>
[ 5637.457339][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5637.457341][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5637.457343][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 5637.457344][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 5637.457345][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5637.457346][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5637.457347][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5637.457347][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5637.457348][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5637.457350][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5637.457352][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5637.457354][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5637.457356][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5637.457359][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5637.457361][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5637.457363][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5637.457365][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5637.457368][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5637.457371][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5637.457372][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5637.457375][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5637.457377][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5637.457380][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5637.457381][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5637.457383][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5637.457385][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5637.457388][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5637.457390][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5637.457392][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5637.457394][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5637.457396][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5637.457399][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5637.457401][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5637.457403][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5637.457405][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5637.457406][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5637.457408][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5637.457410][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5637.457412][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5637.457413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5637.457415][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5637.457417][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5637.457419][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5637.457420][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5637.457422][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5637.457424][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5637.457425][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5637.457427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5637.457428][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5637.457430][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5637.457432][    C2]  vfs_write (fs/read_write.c:686)
[ 5637.457434][    C2]  ksys_write (fs/read_write.c:739)
[ 5637.457436][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5637.457438][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5637.457440][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5637.457442][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5637.457443][    C2] RIP: 0033:0x7f814975fc5e
[ 5637.457445][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5637.457446][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5637.457448][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5637.457449][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5637.457449][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5637.457450][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5637.457451][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5658.004626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5658.004868][    C2] rcu: 2-....: (4704371 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1806275
| [ 5658.005123][    C2] rcu: (t=4706232 jiffies g=521497 q=97124 ncpus=4)
| [ 5658.005309][    C2] Tainted: [L]=SOFTLOCKUP
[ 5658.005310][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5658.005312][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5658.005316][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5658.005318][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5658.005320][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5658.005322][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5658.005323][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5658.005324][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5658.005324][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5658.005327][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5658.005331][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5658.005332][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5658.005333][    C2] PKRU: 55555554
[ 5658.005333][    C2] Call Trace:
[ 5658.005334][    C2]  <TASK>
[ 5658.005335][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5658.005338][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5658.005340][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5658.005343][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5658.005345][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5658.005347][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5658.005349][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5658.005351][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5658.005354][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5658.005356][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5658.005359][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5658.005361][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5658.005363][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5658.005365][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5658.005367][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5658.005369][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5658.005372][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5658.005373][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5658.005376][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5658.005377][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5658.005379][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5658.005382][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5658.005384][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5658.005386][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5658.005388][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5658.005390][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5658.005391][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5658.005393][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5658.005395][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5658.005396][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5658.005398][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5658.005400][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5658.005402][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5658.005403][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5658.005405][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5658.005407][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5658.005408][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5658.005410][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5658.005412][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5658.005413][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5658.005416][    C2]  vfs_write (fs/read_write.c:686)
[ 5658.005418][    C2]  ksys_write (fs/read_write.c:739)
[ 5658.005419][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5658.005421][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5658.005423][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5658.005425][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5658.005427][    C2] RIP: 0033:0x7f814975fc5e
[ 5658.005429][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5658.005430][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5658.005432][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5658.005432][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5658.005433][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5658.005434][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5658.005435][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5684.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5684.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5684.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5684.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 5684.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5684.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5684.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5684.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5684.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5684.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5684.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5684.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5684.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5684.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5684.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5684.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5684.394791][    C2] PKRU: 55555554
[ 5684.394792][    C2] Call Trace:
[ 5684.394795][    C2]  <TASK>
[ 5684.394799][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5684.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5684.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5684.394806][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5684.394808][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5684.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5684.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5684.394815][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5684.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5684.394820][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5684.394823][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5684.394825][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5684.394827][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5684.394829][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5684.394831][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5684.394833][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5684.394836][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5684.394838][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5684.394840][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5684.394842][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5684.394844][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5684.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5684.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5684.394851][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5684.394853][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5684.394855][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5684.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5684.394858][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5684.394860][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5684.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5684.394864][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5684.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5684.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5684.394869][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5684.394871][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5684.394873][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5684.394874][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5684.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5684.394878][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5684.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5684.394882][    C2]  vfs_write (fs/read_write.c:686)
[ 5684.394884][    C2]  ksys_write (fs/read_write.c:739)
[ 5684.394886][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5684.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5684.394890][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5684.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5684.394894][    C2] RIP: 0033:0x7f814975fc5e
[ 5684.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5684.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5684.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5684.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5684.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5684.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5684.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5712.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5712.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5712.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5712.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 5712.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5712.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5712.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5712.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5712.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5712.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5712.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5712.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5712.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5712.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5712.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5712.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5712.394789][    C2] PKRU: 55555554
[ 5712.394789][    C2] Call Trace:
[ 5712.394792][    C2]  <TASK>
[ 5712.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5712.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5712.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5712.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5712.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5712.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5712.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5712.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5712.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5712.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5712.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5712.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5712.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5712.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5712.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5712.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5712.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5712.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5712.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5712.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5712.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5712.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5712.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5712.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5712.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5712.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5712.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5712.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5712.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5712.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5712.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5712.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5712.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5712.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5712.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5712.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5712.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5712.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5712.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5712.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5712.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 5712.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 5712.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5712.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5712.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5712.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5712.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 5712.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5712.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5712.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5712.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5712.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5712.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5712.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5735.761070][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5735.761190][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5735.761319][    C2] NMI backtrace for cpu 2
| [ 5735.761329][    C2] Tainted: [L]=SOFTLOCKUP
[ 5735.761330][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5735.761332][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 5735.761336][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 5735.761337][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 5735.761340][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 5735.761341][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 5735.761342][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 5735.761343][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 5735.761344][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 5735.761347][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5735.761350][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5735.761351][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5735.761352][    C2] PKRU: 55555554
[ 5735.761353][    C2] Call Trace:
[ 5735.761357][    C2]  <IRQ>
[ 5735.761360][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5735.761362][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5735.761365][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5735.761367][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5735.761370][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5735.761372][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5735.761374][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5735.761376][    C2]  </IRQ>
[ 5735.761377][    C2]  <TASK>
[ 5735.761378][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5735.761380][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5735.761382][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5735.761383][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5735.761384][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5735.761385][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5735.761386][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5735.761386][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5735.761387][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5735.761389][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5735.761391][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5735.761393][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5735.761395][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5735.761398][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5735.761400][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5735.761402][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5735.761404][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5735.761407][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5735.761410][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5735.761412][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5735.761414][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5735.761417][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5735.761419][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5735.761421][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5735.761423][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5735.761425][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5735.761427][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5735.761429][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5735.761431][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5735.761433][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5735.761435][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5735.761438][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5735.761441][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5735.761442][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5735.761444][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5735.761446][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5735.761447][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5735.761449][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5735.761451][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5735.761452][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5735.761455][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5735.761456][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5735.761458][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5735.761460][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5735.761461][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5735.761463][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5735.761465][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5735.761467][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5735.761468][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5735.761470][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5735.761472][    C2]  vfs_write (fs/read_write.c:686)
[ 5735.761474][    C2]  ksys_write (fs/read_write.c:739)
[ 5735.761476][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5735.761478][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5735.761480][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5735.761482][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5735.761483][    C2] RIP: 0033:0x7f814975fc5e
[ 5735.761486][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5735.761487][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5735.761488][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5735.761489][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5735.761490][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5735.761490][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5735.761491][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5736.008624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5736.008827][    C2] rcu: 2-....: (4782342 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1840484
| [ 5736.009086][    C2] rcu: (t=4784236 jiffies g=521497 q=98715 ncpus=4)
| [ 5736.009220][    C2] Tainted: [L]=SOFTLOCKUP
[ 5736.009220][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5736.009221][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5736.009224][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5736.009226][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5736.009228][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5736.009229][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5736.009230][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5736.009231][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5736.009232][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5736.009234][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5736.009236][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5736.009238][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5736.009238][    C2] PKRU: 55555554
[ 5736.009239][    C2] Call Trace:
[ 5736.009240][    C2]  <TASK>
[ 5736.009241][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5736.009243][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5736.009245][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5736.009248][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5736.009250][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5736.009252][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5736.009254][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5736.009256][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5736.009259][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5736.009261][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5736.009264][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5736.009266][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5736.009269][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5736.009270][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5736.009272][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5736.009274][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5736.009277][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5736.009279][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5736.009281][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5736.009283][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5736.009284][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5736.009287][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5736.009290][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5736.009291][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5736.009293][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5736.009295][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5736.009296][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5736.009298][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5736.009300][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5736.009301][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5736.009304][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5736.009305][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5736.009307][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5736.009309][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5736.009310][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5736.009312][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5736.009314][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5736.009315][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5736.009317][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5736.009318][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5736.009321][    C2]  vfs_write (fs/read_write.c:686)
[ 5736.009323][    C2]  ksys_write (fs/read_write.c:739)
[ 5736.009325][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5736.009327][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5736.009329][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5736.009331][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5736.009332][    C2] RIP: 0033:0x7f814975fc5e
[ 5736.009334][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5736.009335][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5736.009337][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5736.009337][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5736.009338][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5736.009339][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5736.009340][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5760.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5760.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5760.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5760.394778][    C2] Tainted: [L]=SOFTLOCKUP
[ 5760.394779][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5760.394781][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5760.394784][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5760.394785][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5760.394787][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5760.394788][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5760.394789][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5760.394790][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5760.394791][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5760.394793][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5760.394797][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5760.394798][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5760.394799][    C2] PKRU: 55555554
[ 5760.394800][    C2] Call Trace:
[ 5760.394803][    C2]  <TASK>
[ 5760.394807][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5760.394809][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5760.394811][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5760.394814][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5760.394816][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5760.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5760.394821][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5760.394824][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5760.394827][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5760.394829][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5760.394831][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5760.394834][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5760.394836][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5760.394838][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5760.394840][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5760.394842][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5760.394845][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5760.394847][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5760.394849][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5760.394851][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5760.394853][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5760.394856][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5760.394858][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5760.394860][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5760.394862][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5760.394864][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5760.394865][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5760.394867][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5760.394869][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5760.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5760.394873][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5760.394875][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5760.394876][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5760.394878][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5760.394880][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5760.394882][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5760.394883][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5760.394885][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5760.394887][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5760.394888][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5760.394891][    C2]  vfs_write (fs/read_write.c:686)
[ 5760.394893][    C2]  ksys_write (fs/read_write.c:739)
[ 5760.394895][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5760.394897][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5760.394899][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5760.394901][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5760.394903][    C2] RIP: 0033:0x7f814975fc5e
[ 5760.394906][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5760.394907][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5760.394909][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5760.394909][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5760.394910][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5760.394911][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5760.394912][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5788.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5788.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5788.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5788.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 5788.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5788.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5788.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5788.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5788.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5788.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5788.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5788.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5788.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5788.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5788.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5788.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5788.394788][    C2] PKRU: 55555554
[ 5788.394789][    C2] Call Trace:
[ 5788.394791][    C2]  <TASK>
[ 5788.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5788.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5788.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5788.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5788.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5788.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5788.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5788.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5788.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5788.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5788.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5788.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5788.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5788.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5788.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5788.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5788.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5788.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5788.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5788.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5788.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5788.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5788.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5788.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5788.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5788.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5788.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5788.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5788.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5788.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5788.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5788.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5788.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5788.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5788.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5788.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5788.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5788.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5788.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5788.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5788.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 5788.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 5788.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5788.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5788.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5788.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5788.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 5788.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5788.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5788.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5788.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5788.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5788.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5788.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5814.011626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5814.011872][    C2] rcu: 2-....: (4860320 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1874857
| [ 5814.012555][    C2] rcu: (t=4862239 jiffies g=521497 q=99852 ncpus=4)
| [ 5814.012689][    C2] Tainted: [L]=SOFTLOCKUP
[ 5814.012690][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5814.012692][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5814.012695][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5814.012697][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5814.012699][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5814.012701][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5814.012702][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5814.012702][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5814.012703][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5814.012706][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5814.012709][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5814.012710][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5814.012711][    C2] PKRU: 55555554
[ 5814.012712][    C2] Call Trace:
[ 5814.012713][    C2]  <TASK>
[ 5814.012714][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5814.012717][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5814.012719][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5814.012721][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5814.012723][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5814.012725][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5814.012728][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5814.012730][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5814.012733][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5814.012735][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5814.012737][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5814.012740][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5814.012742][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5814.012744][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5814.012746][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5814.012748][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5814.012751][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5814.012753][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5814.012755][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5814.012757][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5814.012759][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5814.012762][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5814.012764][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5814.012766][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5814.012768][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5814.012770][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5814.012771][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5814.012773][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5814.012775][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5814.012776][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5814.012778][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5814.012780][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5814.012782][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5814.012783][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5814.012785][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5814.012787][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5814.012788][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5814.012790][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5814.012792][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5814.012793][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5814.012796][    C2]  vfs_write (fs/read_write.c:686)
[ 5814.012798][    C2]  ksys_write (fs/read_write.c:739)
[ 5814.012800][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5814.012802][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5814.012804][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5814.012806][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5814.012807][    C2] RIP: 0033:0x7f814975fc5e
[ 5814.012809][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5814.012811][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5814.012812][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5814.012813][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5814.012814][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5814.012815][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5814.012815][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5834.064081][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5834.064225][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5834.064335][    C2] NMI backtrace for cpu 2
| [ 5834.064345][    C2] Tainted: [L]=SOFTLOCKUP
[ 5834.064346][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5834.064348][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 5834.064352][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 5834.064354][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 5834.064356][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 5834.064357][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 5834.064358][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 5834.064359][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 5834.064360][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 5834.064363][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5834.064367][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5834.064368][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5834.064369][    C2] PKRU: 55555554
[ 5834.064369][    C2] Call Trace:
[ 5834.064373][    C2]  <IRQ>
[ 5834.064376][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5834.064378][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5834.064381][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5834.064383][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5834.064385][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5834.064388][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5834.064390][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5834.064393][    C2]  </IRQ>
[ 5834.064393][    C2]  <TASK>
[ 5834.064394][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5834.064396][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5834.064398][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5834.064400][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5834.064401][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5834.064402][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5834.064403][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5834.064403][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5834.064404][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5834.064405][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5834.064408][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5834.064410][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5834.064413][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5834.064415][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5834.064417][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5834.064419][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5834.064422][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5834.064424][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5834.064427][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5834.064429][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5834.064431][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5834.064434][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5834.064436][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5834.064438][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5834.064440][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5834.064442][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5834.064444][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5834.064446][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5834.064448][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5834.064450][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5834.064452][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5834.064455][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5834.064457][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5834.064459][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5834.064461][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5834.064463][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5834.064464][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5834.064466][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5834.064468][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5834.064469][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5834.064472][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5834.064473][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5834.064475][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5834.064477][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5834.064478][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5834.064480][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5834.064482][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5834.064484][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5834.064485][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5834.064487][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5834.064489][    C2]  vfs_write (fs/read_write.c:686)
[ 5834.064491][    C2]  ksys_write (fs/read_write.c:739)
[ 5834.064493][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5834.064495][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5834.064497][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5834.064499][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5834.064501][    C2] RIP: 0033:0x7f814975fc5e
[ 5834.064503][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5834.064504][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5834.064506][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5834.064507][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5834.064507][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5834.064508][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5834.064509][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5860.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5860.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5860.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5860.394778][    C2] Tainted: [L]=SOFTLOCKUP
[ 5860.394779][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5860.394781][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5860.394784][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5860.394785][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5860.394787][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5860.394788][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5860.394789][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5860.394790][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5860.394790][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5860.394793][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5860.394797][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5860.394798][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5860.394799][    C2] PKRU: 55555554
[ 5860.394799][    C2] Call Trace:
[ 5860.394803][    C2]  <TASK>
[ 5860.394807][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5860.394809][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5860.394811][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5860.394814][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5860.394816][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5860.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5860.394820][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5860.394823][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5860.394826][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5860.394828][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5860.394834][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5860.394837][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5860.394839][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5860.394841][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5860.394843][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5860.394846][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5860.394848][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5860.394850][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5860.394852][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5860.394854][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5860.394856][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5860.394859][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5860.394861][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5860.394863][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5860.394865][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5860.394867][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5860.394868][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5860.394870][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5860.394872][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5860.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5860.394876][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5860.394878][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5860.394879][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5860.394881][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5860.394883][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5860.394885][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5860.394886][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5860.394888][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5860.394890][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5860.394891][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5860.394894][    C2]  vfs_write (fs/read_write.c:686)
[ 5860.394896][    C2]  ksys_write (fs/read_write.c:739)
[ 5860.394898][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5860.394899][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5860.394902][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5860.394904][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5860.394906][    C2] RIP: 0033:0x7f814975fc5e
[ 5860.394909][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5860.394910][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5860.394911][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5860.394912][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5860.394913][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5860.394914][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5860.394915][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5888.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5888.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5888.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5888.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 5888.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5888.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5888.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5888.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5888.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5888.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5888.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5888.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5888.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5888.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5888.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5888.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5888.394789][    C2] PKRU: 55555554
[ 5888.394790][    C2] Call Trace:
[ 5888.394793][    C2]  <TASK>
[ 5888.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5888.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5888.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5888.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5888.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5888.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5888.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5888.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5888.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5888.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5888.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5888.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5888.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5888.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5888.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5888.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5888.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5888.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5888.394839][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5888.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5888.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5888.394846][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5888.394848][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5888.394850][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5888.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5888.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5888.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5888.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5888.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5888.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5888.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5888.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5888.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5888.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5888.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5888.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5888.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5888.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5888.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5888.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5888.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 5888.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 5888.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5888.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5888.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5888.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5888.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 5888.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5888.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5888.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5888.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5888.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5888.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5888.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5892.016624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5892.016880][    C2] rcu: 2-....: (4938292 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1906262
| [ 5892.017128][    C2] rcu: (t=4940244 jiffies g=521497 q=101443 ncpus=4)
| [ 5892.017259][    C2] Tainted: [L]=SOFTLOCKUP
[ 5892.017260][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5892.017261][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5892.017265][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5892.017266][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5892.017268][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5892.017269][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5892.017270][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5892.017271][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5892.017272][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5892.017274][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5892.017277][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5892.017278][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5892.017279][    C2] PKRU: 55555554
[ 5892.017279][    C2] Call Trace:
[ 5892.017280][    C2]  <TASK>
[ 5892.017281][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5892.017284][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5892.017286][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5892.017289][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5892.017291][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5892.017293][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5892.017295][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5892.017298][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5892.017301][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5892.017302][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5892.017305][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5892.017308][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5892.017310][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5892.017312][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5892.017314][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5892.017316][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5892.017319][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5892.017321][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5892.017323][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5892.017325][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5892.017326][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5892.017330][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5892.017332][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5892.017333][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5892.017336][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5892.017337][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5892.017338][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5892.017341][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5892.017342][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5892.017344][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5892.017346][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5892.017348][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5892.017349][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5892.017351][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5892.017353][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5892.017354][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5892.017356][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5892.017358][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5892.017359][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5892.017361][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5892.017363][    C2]  vfs_write (fs/read_write.c:686)
[ 5892.017365][    C2]  ksys_write (fs/read_write.c:739)
[ 5892.017367][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5892.017369][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5892.017371][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5892.017373][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5892.017375][    C2] RIP: 0033:0x7f814975fc5e
[ 5892.017376][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5892.017377][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5892.017379][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5892.017380][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5892.017381][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5892.017381][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5892.017382][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5916.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5916.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5916.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5916.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 5916.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5916.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5916.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5916.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5916.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5916.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5916.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5916.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5916.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5916.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5916.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5916.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5916.394790][    C2] PKRU: 55555554
[ 5916.394791][    C2] Call Trace:
[ 5916.394795][    C2]  <TASK>
[ 5916.394799][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5916.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5916.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5916.394806][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5916.394808][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5916.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5916.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5916.394815][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5916.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5916.394820][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5916.394822][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5916.394825][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5916.394827][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5916.394829][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5916.394831][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5916.394833][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5916.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5916.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5916.394839][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5916.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5916.394843][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5916.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5916.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5916.394851][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5916.394853][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5916.394854][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5916.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5916.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5916.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5916.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5916.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5916.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5916.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5916.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5916.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5916.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5916.394874][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5916.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5916.394877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5916.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5916.394881][    C2]  vfs_write (fs/read_write.c:686)
[ 5916.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 5916.394885][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5916.394887][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5916.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5916.394891][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5916.394893][    C2] RIP: 0033:0x7f814975fc5e
[ 5916.394896][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5916.394897][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5916.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5916.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5916.394900][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5916.394901][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5916.394902][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5932.367995][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 5932.368167][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 5932.368330][    C2] NMI backtrace for cpu 2
| [ 5932.368340][    C2] Tainted: [L]=SOFTLOCKUP
[ 5932.368341][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5932.368343][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 5932.368347][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 5932.368348][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 5932.368351][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 5932.368352][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 5932.368353][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 5932.368354][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 5932.368355][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 5932.368358][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5932.368362][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5932.368363][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5932.368364][    C2] PKRU: 55555554
[ 5932.368364][    C2] Call Trace:
[ 5932.368368][    C2]  <IRQ>
[ 5932.368372][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 5932.368374][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 5932.368377][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 5932.368378][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 5932.368381][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 5932.368383][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 5932.368385][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 5932.368388][    C2]  </IRQ>
[ 5932.368388][    C2]  <TASK>
[ 5932.368389][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 5932.368391][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5932.368393][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5932.368395][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5932.368396][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5932.368397][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5932.368398][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5932.368399][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5932.368400][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5932.368401][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 5932.368404][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5932.368406][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5932.368408][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5932.368411][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5932.368413][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5932.368415][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5932.368417][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5932.368420][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5932.368423][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5932.368425][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5932.368427][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5932.368430][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5932.368432][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5932.368434][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5932.368436][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5932.368439][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5932.368441][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5932.368443][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5932.368455][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5932.368457][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5932.368459][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5932.368462][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5932.368464][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5932.368466][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5932.368468][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5932.368470][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5932.368471][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5932.368473][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5932.368475][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5932.368477][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5932.368479][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5932.368481][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5932.368482][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5932.368484][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5932.368486][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5932.368488][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5932.368489][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5932.368491][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5932.368493][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5932.368494][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5932.368497][    C2]  vfs_write (fs/read_write.c:686)
[ 5932.368499][    C2]  ksys_write (fs/read_write.c:739)
[ 5932.368501][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5932.368503][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5932.368505][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5932.368507][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5932.368509][    C2] RIP: 0033:0x7f814975fc5e
[ 5932.368511][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5932.368513][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5932.368514][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5932.368515][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5932.368516][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5932.368516][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5932.368517][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5956.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5956.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5956.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5956.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 5956.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5956.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5956.394783][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5956.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5956.394786][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5956.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5956.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5956.394789][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5956.394790][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5956.394793][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5956.394796][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5956.394797][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5956.394798][    C2] PKRU: 55555554
[ 5956.394799][    C2] Call Trace:
[ 5956.394802][    C2]  <TASK>
[ 5956.394805][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5956.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5956.394810][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5956.394812][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5956.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5956.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5956.394819][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5956.394822][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5956.394824][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5956.394826][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5956.394829][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5956.394831][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5956.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5956.394835][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5956.394837][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5956.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5956.394842][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5956.394844][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5956.394846][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5956.394848][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5956.394850][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5956.394853][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5956.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5956.394857][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5956.394859][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5956.394861][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5956.394862][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5956.394864][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5956.394866][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5956.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5956.394870][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5956.394872][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5956.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5956.394875][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5956.394877][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5956.394879][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5956.394880][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5956.394882][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5956.394884][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5956.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5956.394888][    C2]  vfs_write (fs/read_write.c:686)
[ 5956.394890][    C2]  ksys_write (fs/read_write.c:739)
[ 5956.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5956.394893][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5956.394896][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5956.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5956.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 5956.394902][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5956.394903][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5956.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5956.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5956.394906][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5956.394907][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5956.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5970.020625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 5970.020916][    C2] rcu: 2-....: (5016263 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1936573
| [ 5970.021139][    C2] rcu: (t=5018248 jiffies g=521497 q=103034 ncpus=4)
| [ 5970.021330][    C2] Tainted: [L]=SOFTLOCKUP
[ 5970.021330][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5970.021332][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5970.021336][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5970.021338][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5970.021340][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5970.021341][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5970.021342][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5970.021344][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5970.021344][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5970.021347][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5970.021350][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5970.021351][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5970.021352][    C2] PKRU: 55555554
[ 5970.021353][    C2] Call Trace:
[ 5970.021354][    C2]  <TASK>
[ 5970.021355][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5970.021357][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5970.021359][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5970.021362][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5970.021364][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5970.021366][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5970.021369][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5970.021371][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5970.021374][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5970.021376][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5970.021378][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5970.021381][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5970.021383][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5970.021385][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5970.021387][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5970.021389][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5970.021392][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5970.021394][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5970.021396][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5970.021398][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5970.021400][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5970.021403][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5970.021405][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5970.021407][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5970.021409][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5970.021410][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5970.021412][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5970.021414][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5970.021415][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5970.021417][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5970.021419][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5970.021421][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5970.021423][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5970.021424][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5970.021426][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5970.021428][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5970.021429][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5970.021431][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5970.021433][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5970.021434][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5970.021437][    C2]  vfs_write (fs/read_write.c:686)
[ 5970.021439][    C2]  ksys_write (fs/read_write.c:739)
[ 5970.021441][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5970.021443][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5970.021445][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5970.021446][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5970.021448][    C2] RIP: 0033:0x7f814975fc5e
[ 5970.021450][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5970.021451][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5970.021453][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5970.021454][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5970.021455][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5970.021455][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5970.021456][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 5996.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 5996.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 5996.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 5996.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 5996.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5996.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 5996.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 5996.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 5996.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 5996.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 5996.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 5996.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 5996.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 5996.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 5996.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5996.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 5996.394789][    C2] PKRU: 55555554
[ 5996.394789][    C2] Call Trace:
[ 5996.394792][    C2]  <TASK>
[ 5996.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 5996.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 5996.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 5996.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 5996.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 5996.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5996.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 5996.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 5996.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 5996.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 5996.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 5996.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 5996.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 5996.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 5996.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 5996.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 5996.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 5996.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5996.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 5996.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 5996.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 5996.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5996.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 5996.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 5996.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 5996.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5996.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 5996.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 5996.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 5996.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5996.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 5996.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 5996.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 5996.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 5996.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 5996.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 5996.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 5996.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 5996.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 5996.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 5996.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 5996.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 5996.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 5996.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 5996.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 5996.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 5996.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 5996.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 5996.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 5996.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 5996.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 5996.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 5996.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 5996.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6024.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6024.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6024.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6024.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 6024.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6024.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6024.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6024.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6024.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6024.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6024.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6024.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6024.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6024.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6024.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6024.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6024.394787][    C2] PKRU: 55555554
[ 6024.394787][    C2] Call Trace:
[ 6024.394790][    C2]  <TASK>
[ 6024.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6024.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6024.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6024.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6024.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6024.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6024.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6024.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6024.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6024.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6024.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6024.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6024.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6024.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6024.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6024.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6024.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6024.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6024.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6024.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6024.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6024.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6024.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6024.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6024.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6024.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6024.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6024.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6024.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6024.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6024.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6024.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6024.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6024.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6024.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6024.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6024.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6024.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6024.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6024.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6024.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 6024.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 6024.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6024.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6024.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6024.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6024.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 6024.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6024.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6024.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6024.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6024.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6024.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6024.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6030.672001][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6030.672124][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6030.672280][    C2] NMI backtrace for cpu 2
| [ 6030.672298][    C2] Tainted: [L]=SOFTLOCKUP
[ 6030.672298][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6030.672300][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 6030.672304][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 6030.672305][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 6030.672308][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 6030.672309][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 6030.672310][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 6030.672311][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 6030.672312][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 6030.672315][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6030.672318][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6030.672319][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6030.672320][    C2] PKRU: 55555554
[ 6030.672320][    C2] Call Trace:
[ 6030.672324][    C2]  <IRQ>
[ 6030.672326][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 6030.672328][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 6030.672331][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 6030.672333][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 6030.672336][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6030.672338][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6030.672340][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6030.672342][    C2]  </IRQ>
[ 6030.672343][    C2]  <TASK>
[ 6030.672344][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6030.672346][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6030.672348][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6030.672350][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6030.672351][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6030.672351][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6030.672352][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6030.672353][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6030.672354][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6030.672355][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6030.672358][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6030.672360][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6030.672362][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6030.672364][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6030.672366][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6030.672368][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6030.672371][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6030.672373][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6030.672376][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6030.672378][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6030.672380][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6030.672383][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6030.672385][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6030.672387][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6030.672389][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6030.672391][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6030.672394][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6030.672395][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6030.672398][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6030.672400][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6030.672401][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6030.672404][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6030.672406][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6030.672408][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6030.672410][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6030.672412][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6030.672413][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6030.672415][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6030.672417][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6030.672418][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6030.672421][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6030.672422][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6030.672424][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6030.672425][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6030.672427][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6030.672429][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6030.672430][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6030.672432][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6030.672434][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6030.672435][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6030.672438][    C2]  vfs_write (fs/read_write.c:686)
[ 6030.672440][    C2]  ksys_write (fs/read_write.c:739)
[ 6030.672442][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6030.672443][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6030.672446][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6030.672447][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6030.672449][    C2] RIP: 0033:0x7f814975fc5e
[ 6030.672451][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6030.672452][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6030.672453][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6030.672454][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6030.672455][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6030.672456][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6030.672456][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6048.024626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6048.024905][    C2] rcu: 2-....: (5094233 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=1966724
| [ 6048.025238][    C2] rcu: (t=5096252 jiffies g=521497 q=104625 ncpus=4)
| [ 6048.025398][    C2] Tainted: [L]=SOFTLOCKUP
[ 6048.025399][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6048.025400][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6048.025405][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6048.025407][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6048.025409][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6048.025411][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6048.025411][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6048.025412][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6048.025413][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6048.025415][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6048.025419][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6048.025420][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6048.025421][    C2] PKRU: 55555554
[ 6048.025421][    C2] Call Trace:
[ 6048.025422][    C2]  <TASK>
[ 6048.025423][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6048.025426][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6048.025428][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6048.025435][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6048.025437][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6048.025439][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6048.025441][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6048.025444][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6048.025446][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6048.025448][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6048.025451][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6048.025453][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6048.025455][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6048.025457][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6048.025459][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6048.025461][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6048.025464][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6048.025466][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6048.025468][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6048.025470][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6048.025471][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6048.025474][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6048.025477][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6048.025478][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6048.025481][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6048.025482][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6048.025484][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6048.025486][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6048.025487][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6048.025489][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6048.025491][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6048.025493][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6048.025494][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6048.025496][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6048.025498][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6048.025499][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6048.025501][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6048.025503][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6048.025505][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6048.025506][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6048.025509][    C2]  vfs_write (fs/read_write.c:686)
[ 6048.025511][    C2]  ksys_write (fs/read_write.c:739)
[ 6048.025512][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6048.025514][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6048.025516][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6048.025518][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6048.025520][    C2] RIP: 0033:0x7f814975fc5e
[ 6048.025522][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6048.025524][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6048.025525][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6048.025526][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6048.025527][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6048.025527][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6048.025528][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6072.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6072.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6072.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6072.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 6072.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6072.394771][    C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:141 mm/kasan/generic.c:172 mm/kasan/generic.c:191 mm/kasan/generic.c:200)
[ 6072.394775][    C2] Code: 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff 48 39 c7 0f 82 d1 00 00 00 4c 8d 4c 37 ff 48 89 f9 4c 8d 74 37 ff <48> b8 00 00 00 00 00 fc ff df 49 c1 e9 03 48 c1 e9 03 4e 8d 54 08
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	00 ff                	add    %bh,%bh
   8:	eb 0a                	jmp    0x14
   a:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  11:	80 ff ff 
  14:	48 39 c7             	cmp    %rax,%rdi
  17:	0f 82 d1 00 00 00    	jb     0xee
  1d:	4c 8d 4c 37 ff       	lea    -0x1(%rdi,%rsi,1),%r9
  22:	48 89 f9             	mov    %rdi,%rcx
  25:	4c 8d 74 37 ff       	lea    -0x1(%rdi,%rsi,1),%r14
  2a:*	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax		<-- trapping instruction
  31:	fc ff df 
  34:	49 c1 e9 03          	shr    $0x3,%r9
  38:	48 c1 e9 03          	shr    $0x3,%rcx
  3c:	4e                   	rex.WRX
  3d:	8d                   	.byte 0x8d
  3e:	54                   	push   %rsp
  3f:	08                   	.byte 0x8

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	49 c1 e9 03          	shr    $0x3,%r9
   e:	48 c1 e9 03          	shr    $0x3,%rcx
  12:	4e                   	rex.WRX
  13:	8d                   	.byte 0x8d
  14:	54                   	push   %rsp
  15:	08                   	.byte 0x8
[ 6072.394777][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000206
[ 6072.394778][    C2] RAX: ff00000000000000 RBX: ff11000012560b48 RCX: ff11000012560b48
[ 6072.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6072.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ff11000012560b4b
[ 6072.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6072.394782][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 6072.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6072.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6072.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6072.394790][    C2] PKRU: 55555554
[ 6072.394790][    C2] Call Trace:
[ 6072.394793][    C2]  <TASK>
[ 6072.394797][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6072.394800][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6072.394802][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6072.394804][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6072.394807][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6072.394809][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6072.394811][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6072.394813][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6072.394816][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6072.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6072.394821][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6072.394823][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6072.394826][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6072.394828][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6072.394830][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6072.394832][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6072.394834][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6072.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6072.394838][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6072.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6072.394843][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6072.394844][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6072.394848][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6072.394850][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6072.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6072.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6072.394855][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6072.394857][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6072.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6072.394860][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6072.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6072.394864][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6072.394866][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6072.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6072.394869][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6072.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6072.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6072.394874][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6072.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6072.394877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6072.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6072.394881][    C2]  vfs_write (fs/read_write.c:686)
[ 6072.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 6072.394885][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6072.394887][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6072.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6072.394891][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6072.394893][    C2] RIP: 0033:0x7f814975fc5e
[ 6072.394896][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6072.394897][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6072.394898][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6072.394899][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6072.394900][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6072.394901][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6072.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6100.394761][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6100.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6100.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6100.394772][    C2] Tainted: [L]=SOFTLOCKUP
[ 6100.394773][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6100.394775][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:201)
[ 6100.394778][    C2] Code: 48 39 c1 74 20 80 38 00 74 f2 b9 01 00 00 00 48 85 c0 74 2e 48 39 c3 75 19 45 89 f2 41 83 e2 07 44 3a 13 7d 0d b9 01 00 00 00 <5b> 41 5e 89 c8 41 5f c3 4c 89 c1 0f b6 d2 e8 df e9 ff ff 83 f0 01
All code
========
   0:	48 39 c1             	cmp    %rax,%rcx
   3:	74 20                	je     0x25
   5:	80 38 00             	cmpb   $0x0,(%rax)
   8:	74 f2                	je     0xfffffffffffffffc
   a:	b9 01 00 00 00       	mov    $0x1,%ecx
   f:	48 85 c0             	test   %rax,%rax
  12:	74 2e                	je     0x42
  14:	48 39 c3             	cmp    %rax,%rbx
  17:	75 19                	jne    0x32
  19:	45 89 f2             	mov    %r14d,%r10d
  1c:	41 83 e2 07          	and    $0x7,%r10d
  20:	44 3a 13             	cmp    (%rbx),%r10b
  23:	7d 0d                	jge    0x32
  25:	b9 01 00 00 00       	mov    $0x1,%ecx
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	41 5e                	pop    %r14
  2d:	89 c8                	mov    %ecx,%eax
  2f:	41 5f                	pop    %r15
  31:	c3                   	ret
  32:	4c 89 c1             	mov    %r8,%rcx
  35:	0f b6 d2             	movzbl %dl,%edx
  38:	e8 df e9 ff ff       	call   0xffffffffffffea1c
  3d:	83 f0 01             	xor    $0x1,%eax

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	41 5e                	pop    %r14
   3:	89 c8                	mov    %ecx,%eax
   5:	41 5f                	pop    %r15
   7:	c3                   	ret
   8:	4c 89 c1             	mov    %r8,%rcx
   b:	0f b6 d2             	movzbl %dl,%edx
   e:	e8 df e9 ff ff       	call   0xffffffffffffe9f2
  13:	83 f0 01             	xor    $0x1,%eax
[ 6100.394780][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000246
[ 6100.394781][    C2] RAX: ffe21c00024ac16a RBX: ffe21c00024ac169 RCX: 0000000000000001
[ 6100.394782][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6100.394783][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6100.394784][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6100.394785][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 6100.394787][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6100.394791][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6100.394792][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6100.394793][    C2] PKRU: 55555554
[ 6100.394794][    C2] Call Trace:
[ 6100.394798][    C2]  <TASK>
[ 6100.394801][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6100.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6100.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6100.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6100.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6100.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6100.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6100.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6100.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6100.394824][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6100.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6100.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6100.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6100.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6100.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6100.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6100.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6100.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6100.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6100.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6100.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6100.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6100.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6100.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6100.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6100.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6100.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6100.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6100.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6100.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6100.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6100.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6100.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6100.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6100.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6100.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6100.394882][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6100.394884][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6100.394886][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6100.394888][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6100.394889][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6100.394892][    C2]  vfs_write (fs/read_write.c:686)
[ 6100.394894][    C2]  ksys_write (fs/read_write.c:739)
[ 6100.394896][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6100.394897][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6100.394900][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6100.394902][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6100.394904][    C2] RIP: 0033:0x7f814975fc5e
[ 6100.394907][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6100.394908][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6100.394910][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6100.394911][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6100.394911][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6100.394912][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6100.394913][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6126.028625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6126.028911][    C2] rcu: 2-....: (5172213 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2002840
| [ 6126.029218][    C2] rcu: (t=5174256 jiffies g=521497 q=105771 ncpus=4)
| [ 6126.029388][    C2] Tainted: [L]=SOFTLOCKUP
[ 6126.029389][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6126.029391][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6126.029394][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6126.029396][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6126.029398][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6126.029400][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6126.029401][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6126.029402][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6126.029402][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6126.029405][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6126.029408][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6126.029409][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6126.029410][    C2] PKRU: 55555554
[ 6126.029411][    C2] Call Trace:
[ 6126.029411][    C2]  <TASK>
[ 6126.029412][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6126.029415][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6126.029417][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6126.029419][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6126.029422][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6126.029423][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6126.029426][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6126.029428][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6126.029431][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6126.029433][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6126.029435][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6126.029438][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6126.029440][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6126.029441][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6126.029443][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6126.029445][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6126.029448][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6126.029450][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6126.029452][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6126.029454][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6126.029456][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6126.029459][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6126.029461][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6126.029463][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6126.029465][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6126.029466][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6126.029468][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6126.029470][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6126.029471][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6126.029473][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6126.029475][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6126.029477][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6126.029479][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6126.029480][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6126.029482][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6126.029484][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6126.029485][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6126.029487][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6126.029489][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6126.029490][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6126.029493][    C2]  vfs_write (fs/read_write.c:686)
[ 6126.029495][    C2]  ksys_write (fs/read_write.c:739)
[ 6126.029497][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6126.029499][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6126.029501][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6126.029502][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6126.029504][    C2] RIP: 0033:0x7f814975fc5e
[ 6126.029506][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6126.029507][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6126.029509][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6126.029510][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6126.029511][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6126.029512][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6126.029512][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6128.976974][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6128.977133][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6128.977287][    C2] NMI backtrace for cpu 2
| [ 6128.977295][    C2] Tainted: [L]=SOFTLOCKUP
[ 6128.977296][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6128.977298][    C2] RIP: 0010:native_apic_msr_read (./arch/x86/include/asm/msr.h:75 ./arch/x86/include/asm/msr.h:108 ./arch/x86/include/asm/apic.h:227)
[ 6128.977302][    C2] Code: 08 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 ff ff ff ff 81 ff e0 00 00 00 74 15 c1 ef 04 8d 8f 00 08 00 00 0f 32 <48> c1 e2 20 48 09 d0 66 90 c3 c3 48 83 ec 08 48 89 c6 31 d2 89 cf
All code
========
   0:	08 00                	or     %al,(%rax)
   2:	00 66 66             	add    %ah,0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	f3 0f 1e fa          	endbr64
  12:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  17:	81 ff e0 00 00 00    	cmp    $0xe0,%edi
  1d:	74 15                	je     0x34
  1f:	c1 ef 04             	shr    $0x4,%edi
  22:	8d 8f 00 08 00 00    	lea    0x800(%rdi),%ecx
  28:	0f 32                	rdmsr
  2a:*	48 c1 e2 20          	shl    $0x20,%rdx		<-- trapping instruction
  2e:	48 09 d0             	or     %rdx,%rax
  31:	66 90                	xchg   %ax,%ax
  33:	c3                   	ret
  34:	c3                   	ret
  35:	48 83 ec 08          	sub    $0x8,%rsp
  39:	48 89 c6             	mov    %rax,%rsi
  3c:	31 d2                	xor    %edx,%edx
  3e:	89 cf                	mov    %ecx,%edi

Code starting with the faulting instruction
===========================================
   0:	48 c1 e2 20          	shl    $0x20,%rdx
   4:	48 09 d0             	or     %rdx,%rax
   7:	66 90                	xchg   %ax,%ax
   9:	c3                   	ret
   a:	c3                   	ret
   b:	48 83 ec 08          	sub    $0x8,%rsp
   f:	48 89 c6             	mov    %rax,%rsi
  12:	31 d2                	xor    %edx,%edx
  14:	89 cf                	mov    %ecx,%edi
[ 6128.977304][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000012
[ 6128.977306][    C2] RAX: 0000000000000001 RBX: ff11000002980428 RCX: 0000000000000819
[ 6128.977308][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000019
[ 6128.977308][    C2] RBP: ff11000002980438 R08: ffffffffaa2da398 R09: fff3fc00000431df
[ 6128.977309][    C2] R10: 0000000000000003 R11: 1fe2200006a6666a R12: ff110000027b3040
[ 6128.977310][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 6128.977312][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6128.977315][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6128.977316][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6128.977317][    C2] PKRU: 55555554
[ 6128.977317][    C2] Call Trace:
[ 6128.977319][    C2]  <IRQ>
[ 6128.977320][    C2]  ioapic_ack_level (./arch/x86/include/asm/apic.h:404 arch/x86/kernel/apic/io_apic.c:1700)
[ 6128.977324][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 6128.977327][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6128.977330][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6128.977332][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6128.977334][    C2]  </IRQ>
[ 6128.977335][    C2]  <TASK>
[ 6128.977336][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6128.977338][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6128.977340][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6128.977341][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6128.977342][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6128.977343][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6128.977343][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6128.977344][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6128.977345][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6128.977346][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6128.977349][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6128.977351][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6128.977353][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6128.977355][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6128.977358][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6128.977359][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6128.977362][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6128.977364][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6128.977367][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6128.977369][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6128.977371][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6128.977374][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6128.977376][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6128.977378][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6128.977380][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6128.977382][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6128.977384][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6128.977386][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6128.977388][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6128.977390][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6128.977392][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6128.977395][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6128.977397][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6128.977399][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6128.977401][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6128.977403][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6128.977404][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6128.977406][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6128.977408][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6128.977409][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6128.977411][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6128.977413][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6128.977415][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6128.977416][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6128.977418][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6128.977420][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6128.977421][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6128.977423][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6128.977425][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6128.977426][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6128.977429][    C2]  vfs_write (fs/read_write.c:686)
[ 6128.977431][    C2]  ksys_write (fs/read_write.c:739)
[ 6128.977433][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6128.977434][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6128.977437][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6128.977438][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6128.977440][    C2] RIP: 0033:0x7f814975fc5e
[ 6128.977442][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6128.977443][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6128.977444][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6128.977445][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6128.977445][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6128.977446][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6128.977447][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6156.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6156.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6156.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6156.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 6156.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6156.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6156.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6156.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6156.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6156.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6156.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6156.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6156.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6156.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6156.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6156.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6156.394796][    C2] PKRU: 55555554
[ 6156.394796][    C2] Call Trace:
[ 6156.394799][    C2]  <TASK>
[ 6156.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6156.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6156.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6156.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6156.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6156.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6156.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6156.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6156.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6156.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6156.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6156.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6156.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6156.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6156.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6156.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6156.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6156.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6156.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6156.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6156.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6156.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6156.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6156.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6156.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6156.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6156.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6156.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6156.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6156.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6156.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6156.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6156.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6156.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6156.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6156.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6156.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6156.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6156.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6156.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6156.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 6156.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 6156.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6156.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6156.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6156.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6156.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 6156.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6156.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6156.394901][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6156.394902][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6156.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6156.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6156.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6184.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6184.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6184.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6184.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 6184.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6184.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6184.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6184.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6184.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6184.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6184.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6184.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6184.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6184.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6184.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6184.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6184.394787][    C2] PKRU: 55555554
[ 6184.394787][    C2] Call Trace:
[ 6184.394791][    C2]  <TASK>
[ 6184.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6184.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6184.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6184.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6184.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6184.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6184.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6184.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6184.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6184.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6184.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6184.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6184.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6184.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6184.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6184.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6184.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6184.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6184.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6184.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6184.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6184.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6184.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6184.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6184.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6184.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6184.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6184.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6184.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6184.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6184.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6184.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6184.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6184.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6184.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6184.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6184.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6184.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6184.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6184.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6184.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 6184.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 6184.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6184.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6184.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6184.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6184.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 6184.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6184.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6184.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6184.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6184.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6184.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6184.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6204.032625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6204.032851][    C2] rcu: 2-....: (5250184 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2035493
| [ 6204.033116][    C2] rcu: (t=5252260 jiffies g=521497 q=107355 ncpus=4)
| [ 6204.033279][    C2] Tainted: [L]=SOFTLOCKUP
[ 6204.033279][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6204.033281][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6204.033285][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6204.033286][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6204.033288][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6204.033290][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6204.033291][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6204.033291][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6204.033292][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6204.033295][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6204.033298][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6204.033299][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6204.033300][    C2] PKRU: 55555554
[ 6204.033300][    C2] Call Trace:
[ 6204.033301][    C2]  <TASK>
[ 6204.033303][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6204.033305][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6204.033307][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6204.033310][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6204.033312][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6204.033314][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6204.033316][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6204.033318][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6204.033321][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6204.033323][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6204.033325][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6204.033328][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6204.033330][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6204.033332][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6204.033334][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6204.033336][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6204.033338][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6204.033340][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6204.033342][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6204.033344][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6204.033346][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6204.033349][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6204.033351][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6204.033353][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6204.033355][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6204.033356][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6204.033358][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6204.033360][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6204.033361][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6204.033363][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6204.033365][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6204.033367][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6204.033369][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6204.033370][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6204.033372][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6204.033374][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6204.033375][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6204.033377][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6204.033379][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6204.033380][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6204.033383][    C2]  vfs_write (fs/read_write.c:686)
[ 6204.033385][    C2]  ksys_write (fs/read_write.c:739)
[ 6204.033387][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6204.033388][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6204.033391][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6204.033392][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6204.033394][    C2] RIP: 0033:0x7f814975fc5e
[ 6204.033396][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6204.033397][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6204.033398][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6204.033400][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6204.033400][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6204.033401][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6204.033402][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6227.280058][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6227.280216][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6227.280331][    C2] NMI backtrace for cpu 2
| [ 6227.280341][    C2] Tainted: [L]=SOFTLOCKUP
[ 6227.280342][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6227.280343][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 6227.280347][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 6227.280349][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 6227.280351][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 6227.280352][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 6227.280353][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 6227.280354][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 6227.280355][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 6227.280358][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6227.280361][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6227.280362][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6227.280363][    C2] PKRU: 55555554
[ 6227.280363][    C2] Call Trace:
[ 6227.280366][    C2]  <IRQ>
[ 6227.280367][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 6227.280371][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 6227.280374][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6227.280376][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6227.280378][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6227.280380][    C2]  </IRQ>
[ 6227.280381][    C2]  <TASK>
[ 6227.280382][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6227.280384][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6227.280386][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6227.280387][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6227.280388][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6227.280389][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6227.280390][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6227.280390][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6227.280391][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6227.280393][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6227.280395][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6227.280397][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6227.280399][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6227.280402][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6227.280404][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6227.280406][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6227.280408][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6227.280410][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6227.280413][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6227.280415][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6227.280417][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6227.280420][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6227.280422][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6227.280424][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6227.280426][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6227.280428][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6227.280430][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6227.280432][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6227.280435][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6227.280437][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6227.280438][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6227.280441][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6227.280443][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6227.280445][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6227.280447][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6227.280449][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6227.280450][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6227.280452][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6227.280454][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6227.280455][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6227.280457][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6227.280459][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6227.280461][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6227.280462][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6227.280464][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6227.280466][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6227.280467][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6227.280469][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6227.280471][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6227.280472][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6227.280475][    C2]  vfs_write (fs/read_write.c:686)
[ 6227.280477][    C2]  ksys_write (fs/read_write.c:739)
[ 6227.280479][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6227.280480][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6227.280483][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6227.280484][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6227.280486][    C2] RIP: 0033:0x7f814975fc5e
[ 6227.280488][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6227.280489][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6227.280491][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6227.280491][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6227.280492][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6227.280493][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6227.280493][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6252.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6252.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6252.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6252.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 6252.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6252.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6252.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6252.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6252.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6252.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6252.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6252.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6252.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6252.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6252.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6252.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6252.394796][    C2] PKRU: 55555554
[ 6252.394796][    C2] Call Trace:
[ 6252.394800][    C2]  <TASK>
[ 6252.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6252.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6252.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6252.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6252.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6252.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6252.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6252.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6252.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6252.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6252.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6252.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6252.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6252.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6252.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6252.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6252.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6252.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6252.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6252.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6252.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6252.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6252.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6252.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6252.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6252.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6252.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6252.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6252.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6252.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6252.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6252.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6252.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6252.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6252.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6252.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6252.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6252.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6252.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6252.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6252.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 6252.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 6252.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6252.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6252.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6252.394896][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6252.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 6252.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6252.394903][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6252.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6252.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6252.394906][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6252.394907][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6252.394908][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6280.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6280.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6280.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6280.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 6280.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6280.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6280.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6280.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6280.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6280.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6280.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6280.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6280.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6280.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6280.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6280.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6280.394787][    C2] PKRU: 55555554
[ 6280.394788][    C2] Call Trace:
[ 6280.394791][    C2]  <TASK>
[ 6280.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6280.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6280.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6280.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6280.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6280.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6280.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6280.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6280.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6280.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6280.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6280.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6280.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6280.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6280.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6280.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6280.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6280.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6280.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6280.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6280.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6280.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6280.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6280.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6280.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6280.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6280.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6280.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6280.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6280.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6280.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6280.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6280.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6280.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6280.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6280.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6280.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6280.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6280.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6280.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6280.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 6280.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 6280.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6280.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6280.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6280.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6280.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 6280.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6280.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6280.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6280.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6280.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6280.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6280.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6282.036623][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6282.036823][    C2] rcu: 2-....: (5328155 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2067888
| [ 6282.037124][    C2] rcu: (t=5330264 jiffies g=521497 q=108938 ncpus=4)
| [ 6282.037276][    C2] Tainted: [L]=SOFTLOCKUP
[ 6282.037277][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6282.037278][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6282.037281][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6282.037283][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6282.037285][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6282.037286][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6282.037287][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6282.037288][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6282.037288][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6282.037290][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6282.037293][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6282.037294][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6282.037295][    C2] PKRU: 55555554
[ 6282.037295][    C2] Call Trace:
[ 6282.037296][    C2]  <TASK>
[ 6282.037297][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6282.037299][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6282.037302][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6282.037304][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6282.037306][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6282.037308][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6282.037311][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6282.037313][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6282.037316][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6282.037318][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6282.037320][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6282.037323][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6282.037325][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6282.037326][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6282.037329][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6282.037331][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6282.037333][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6282.037335][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6282.037337][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6282.037339][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6282.037341][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6282.037344][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6282.037346][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6282.037348][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6282.037350][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6282.037351][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6282.037353][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6282.037355][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6282.037356][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6282.037357][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6282.037360][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6282.037361][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6282.037363][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6282.037365][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6282.037366][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6282.037368][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6282.037370][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6282.037371][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6282.037373][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6282.037375][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6282.037377][    C2]  vfs_write (fs/read_write.c:686)
[ 6282.037379][    C2]  ksys_write (fs/read_write.c:739)
[ 6282.037381][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6282.037383][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6282.037385][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6282.037386][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6282.037388][    C2] RIP: 0033:0x7f814975fc5e
[ 6282.037390][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6282.037391][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6282.037392][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6282.037393][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6282.037394][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6282.037394][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6282.037395][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6308.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6308.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6308.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6308.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 6308.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6308.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6308.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6308.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6308.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6308.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6308.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6308.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6308.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6308.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6308.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6308.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6308.394787][    C2] PKRU: 55555554
[ 6308.394787][    C2] Call Trace:
[ 6308.394791][    C2]  <TASK>
[ 6308.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6308.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6308.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6308.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6308.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6308.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6308.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6308.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6308.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6308.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6308.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6308.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6308.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6308.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6308.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6308.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6308.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6308.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6308.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6308.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6308.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6308.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6308.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6308.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6308.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6308.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6308.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6308.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6308.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6308.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6308.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6308.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6308.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6308.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6308.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6308.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6308.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6308.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6308.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6308.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6308.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 6308.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 6308.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6308.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6308.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6308.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6308.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 6308.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6308.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6308.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6308.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6308.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6308.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6308.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6325.584053][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6325.584174][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6325.584283][    C2] NMI backtrace for cpu 2
| [ 6325.584293][    C2] Tainted: [L]=SOFTLOCKUP
[ 6325.584294][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6325.584296][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 6325.584300][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 6325.584301][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 6325.584304][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 6325.584305][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 6325.584306][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 6325.584307][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 6325.584308][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 6325.584310][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6325.584313][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6325.584314][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6325.584315][    C2] PKRU: 55555554
[ 6325.584316][    C2] Call Trace:
[ 6325.584319][    C2]  <IRQ>
[ 6325.584321][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 6325.584325][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 6325.584328][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6325.584330][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6325.584332][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6325.584335][    C2]  </IRQ>
[ 6325.584335][    C2]  <TASK>
[ 6325.584336][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6325.584338][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6325.584341][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6325.584342][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6325.584343][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6325.584344][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6325.584344][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6325.584345][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6325.584346][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6325.584347][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6325.584350][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6325.584352][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6325.584354][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6325.584356][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6325.584359][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6325.584360][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6325.584363][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6325.584365][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6325.584368][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6325.584370][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6325.584372][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6325.584375][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6325.584377][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6325.584379][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6325.584381][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6325.584383][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6325.584385][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6325.584387][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6325.584389][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6325.584391][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6325.584393][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6325.584396][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6325.584398][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6325.584400][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6325.584402][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6325.584404][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6325.584405][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6325.584407][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6325.584409][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6325.584410][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6325.584412][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6325.584414][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6325.584416][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6325.584417][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6325.584419][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6325.584421][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6325.584423][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6325.584424][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6325.584426][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6325.584427][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6325.584430][    C2]  vfs_write (fs/read_write.c:686)
[ 6325.584432][    C2]  ksys_write (fs/read_write.c:739)
[ 6325.584434][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6325.584436][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6325.584438][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6325.584440][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6325.584441][    C2] RIP: 0033:0x7f814975fc5e
[ 6325.584443][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6325.584444][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6325.584446][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6325.584447][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6325.584447][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6325.584448][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6325.584449][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6352.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6352.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6352.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6352.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 6352.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6352.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6352.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6352.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6352.394783][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6352.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6352.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6352.394786][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6352.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6352.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6352.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6352.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6352.394795][    C2] PKRU: 55555554
[ 6352.394795][    C2] Call Trace:
[ 6352.394798][    C2]  <TASK>
[ 6352.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6352.394803][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6352.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6352.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6352.394810][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6352.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6352.394814][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6352.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6352.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6352.394821][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6352.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6352.394826][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6352.394829][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6352.394830][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6352.394832][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6352.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6352.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6352.394839][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6352.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6352.394843][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6352.394845][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6352.394848][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6352.394850][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6352.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6352.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6352.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6352.394858][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6352.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6352.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6352.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6352.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6352.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6352.394869][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6352.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6352.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6352.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6352.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6352.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6352.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6352.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6352.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 6352.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 6352.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6352.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6352.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6352.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6352.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 6352.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6352.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6352.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6352.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6352.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6352.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6352.394902][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6360.039625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6360.039866][    C2] rcu: 2-....: (5406125 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2100242
| [ 6360.040131][    C2] rcu: (t=5408267 jiffies g=521497 q=110521 ncpus=4)
| [ 6360.040264][    C2] Tainted: [L]=SOFTLOCKUP
[ 6360.040265][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6360.040266][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6360.040270][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 6360.040271][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 6360.040274][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6360.040275][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6360.040276][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6360.040277][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6360.040277][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6360.040280][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6360.040283][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6360.040284][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6360.040285][    C2] PKRU: 55555554
[ 6360.040286][    C2] Call Trace:
[ 6360.040287][    C2]  <TASK>
[ 6360.040288][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6360.040290][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6360.040292][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6360.040295][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6360.040297][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6360.040299][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6360.040301][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6360.040303][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6360.040306][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6360.040308][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6360.040310][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6360.040313][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6360.040315][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6360.040317][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6360.040319][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6360.040321][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6360.040324][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6360.040325][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6360.040328][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6360.040330][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6360.040331][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6360.040334][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6360.040336][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6360.040338][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6360.040340][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6360.040342][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6360.040343][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6360.040345][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6360.040347][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6360.040348][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6360.040351][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6360.040352][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6360.040354][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6360.040355][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6360.040357][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6360.040359][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6360.040360][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6360.040362][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6360.040364][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6360.040365][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6360.040368][    C2]  vfs_write (fs/read_write.c:686)
[ 6360.040370][    C2]  ksys_write (fs/read_write.c:739)
[ 6360.040371][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6360.040373][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6360.040375][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6360.040377][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6360.040378][    C2] RIP: 0033:0x7f814975fc5e
[ 6360.040380][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6360.040381][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6360.040383][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6360.040384][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6360.040385][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6360.040385][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6360.040386][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6384.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6384.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6384.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6384.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 6384.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6384.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6384.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6384.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6384.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6384.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6384.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6384.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6384.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6384.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6384.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6384.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6384.394788][    C2] PKRU: 55555554
[ 6384.394789][    C2] Call Trace:
[ 6384.394792][    C2]  <TASK>
[ 6384.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6384.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6384.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6384.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6384.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6384.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6384.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6384.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6384.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6384.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6384.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6384.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6384.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6384.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6384.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6384.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6384.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6384.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6384.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6384.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6384.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6384.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6384.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6384.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6384.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6384.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6384.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6384.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6384.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6384.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6384.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6384.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6384.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6384.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6384.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6384.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6384.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6384.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6384.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6384.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6384.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 6384.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 6384.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6384.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6384.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6384.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6384.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 6384.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6384.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6384.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6384.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6384.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6384.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6384.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6412.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6412.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6412.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6412.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 6412.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6412.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6412.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6412.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6412.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6412.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6412.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6412.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6412.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6412.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6412.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6412.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6412.394786][    C2] PKRU: 55555554
[ 6412.394787][    C2] Call Trace:
[ 6412.394790][    C2]  <TASK>
[ 6412.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6412.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6412.394797][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6412.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6412.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6412.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6412.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6412.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6412.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6412.394813][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6412.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6412.394818][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6412.394820][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6412.394822][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6412.394824][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6412.394826][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6412.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6412.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6412.394833][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6412.394835][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6412.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6412.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6412.394842][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6412.394844][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6412.394846][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6412.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6412.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6412.394851][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6412.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6412.394854][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6412.394856][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6412.394858][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6412.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6412.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6412.394863][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6412.394865][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6412.394866][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6412.394868][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6412.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6412.394871][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6412.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 6412.394876][    C2]  ksys_write (fs/read_write.c:739)
[ 6412.394877][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6412.394879][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6412.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6412.394883][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6412.394885][    C2] RIP: 0033:0x7f814975fc5e
[ 6412.394888][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6412.394889][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6412.394890][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6412.394891][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6412.394892][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6412.394892][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6412.394893][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6423.889070][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6423.889192][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6423.889315][    C2] NMI backtrace for cpu 2
| [ 6423.889324][    C2] Tainted: [L]=SOFTLOCKUP
[ 6423.889325][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6423.889326][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 6423.889330][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 6423.889331][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 6423.889334][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 6423.889335][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 6423.889336][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 6423.889337][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 6423.889337][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 6423.889340][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6423.889344][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6423.889344][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6423.889345][    C2] PKRU: 55555554
[ 6423.889346][    C2] Call Trace:
[ 6423.889350][    C2]  <IRQ>
[ 6423.889351][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 6423.889356][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 6423.889359][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6423.889361][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6423.889363][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6423.889365][    C2]  </IRQ>
[ 6423.889366][    C2]  <TASK>
[ 6423.889367][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6423.889369][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6423.889371][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6423.889372][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6423.889373][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6423.889374][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6423.889375][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6423.889375][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6423.889376][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6423.889377][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6423.889380][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6423.889382][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6423.889384][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6423.889386][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6423.889388][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6423.889390][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6423.889393][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6423.889395][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6423.889398][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6423.889399][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6423.889402][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6423.889405][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6423.889407][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6423.889408][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6423.889410][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6423.889412][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6423.889415][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6423.889417][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6423.889419][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6423.889421][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6423.889423][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6423.889426][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6423.889428][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6423.889430][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6423.889432][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6423.889433][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6423.889435][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6423.889437][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6423.889438][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6423.889439][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6423.889442][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6423.889444][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6423.889445][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6423.889447][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6423.889448][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6423.889450][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6423.889452][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6423.889454][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6423.889455][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6423.889457][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6423.889459][    C2]  vfs_write (fs/read_write.c:686)
[ 6423.889461][    C2]  ksys_write (fs/read_write.c:739)
[ 6423.889463][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6423.889465][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6423.889467][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6423.889469][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6423.889470][    C2] RIP: 0033:0x7f814975fc5e
[ 6423.889473][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6423.889474][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6423.889475][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6423.889476][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6423.889476][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6423.889477][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6423.889478][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6438.043627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6438.043942][    C2] rcu: 2-....: (5484096 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2130769
| [ 6438.044159][    C2] rcu: (t=5486271 jiffies g=521497 q=112104 ncpus=4)
| [ 6438.044353][    C2] Tainted: [L]=SOFTLOCKUP
[ 6438.044354][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6438.044356][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6438.044360][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 6438.044361][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 6438.044364][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6438.044365][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6438.044366][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6438.044367][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6438.044367][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6438.044370][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6438.044373][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6438.044374][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6438.044375][    C2] PKRU: 55555554
[ 6438.044376][    C2] Call Trace:
[ 6438.044377][    C2]  <TASK>
[ 6438.044378][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6438.044380][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6438.044382][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6438.044385][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6438.044387][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6438.044389][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6438.044391][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6438.044393][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6438.044396][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6438.044398][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6438.044400][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6438.044403][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6438.044405][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6438.044407][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6438.044409][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6438.044411][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6438.044414][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6438.044416][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6438.044418][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6438.044420][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6438.044421][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6438.044424][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6438.044426][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6438.044428][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6438.044430][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6438.044432][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6438.044433][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6438.044435][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6438.044437][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6438.044438][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6438.044441][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6438.044442][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6438.044444][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6438.044446][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6438.044447][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6438.044449][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6438.044451][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6438.044453][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6438.044454][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6438.044456][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6438.044458][    C2]  vfs_write (fs/read_write.c:686)
[ 6438.044460][    C2]  ksys_write (fs/read_write.c:739)
[ 6438.044462][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6438.044464][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6438.044466][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6438.044468][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6438.044469][    C2] RIP: 0033:0x7f814975fc5e
[ 6438.044471][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6438.044473][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6438.044474][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6438.044475][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6438.044476][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6438.044476][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6438.044477][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6464.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6464.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6464.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6464.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 6464.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6464.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6464.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6464.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6464.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6464.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6464.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6464.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6464.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6464.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6464.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6464.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6464.394788][    C2] PKRU: 55555554
[ 6464.394789][    C2] Call Trace:
[ 6464.394792][    C2]  <TASK>
[ 6464.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6464.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6464.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6464.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6464.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6464.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6464.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6464.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6464.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6464.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6464.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6464.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6464.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6464.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6464.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6464.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6464.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6464.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6464.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6464.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6464.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6464.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6464.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6464.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6464.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6464.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6464.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6464.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6464.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6464.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6464.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6464.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6464.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6464.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6464.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6464.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6464.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6464.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6464.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6464.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6464.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 6464.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 6464.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6464.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6464.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6464.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6464.394886][    C2] RIP: 0033:0x7f814975fc5e
[ 6464.394888][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6464.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6464.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6464.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6464.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6464.394893][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6464.394894][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6492.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6492.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6492.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6492.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 6492.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6492.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6492.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6492.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6492.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6492.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6492.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6492.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6492.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6492.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6492.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6492.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6492.394786][    C2] PKRU: 55555554
[ 6492.394787][    C2] Call Trace:
[ 6492.394790][    C2]  <TASK>
[ 6492.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6492.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6492.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6492.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6492.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6492.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6492.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6492.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6492.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6492.394813][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6492.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6492.394818][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6492.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6492.394822][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6492.394824][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6492.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6492.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6492.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6492.394833][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6492.394835][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6492.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6492.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6492.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6492.394844][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6492.394846][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6492.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6492.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6492.394851][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6492.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6492.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6492.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6492.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6492.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6492.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6492.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6492.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6492.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6492.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6492.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6492.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6492.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 6492.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 6492.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6492.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6492.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6492.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6492.394886][    C2] RIP: 0033:0x7f814975fc5e
[ 6492.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6492.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6492.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6492.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6492.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6492.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6492.394894][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6516.047625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6516.047873][    C2] rcu: 2-....: (5562076 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2159168
| [ 6516.048156][    C2] rcu: (t=5564275 jiffies g=521497 q=113241 ncpus=4)
| [ 6516.048339][    C2] Tainted: [L]=SOFTLOCKUP
[ 6516.048339][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6516.048341][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6516.048345][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6516.048346][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6516.048348][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6516.048349][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6516.048350][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6516.048351][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6516.048352][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6516.048354][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6516.048357][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6516.048358][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6516.048359][    C2] PKRU: 55555554
[ 6516.048360][    C2] Call Trace:
[ 6516.048361][    C2]  <TASK>
[ 6516.048361][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6516.048364][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6516.048366][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6516.048369][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6516.048371][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6516.048373][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6516.048375][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6516.048377][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6516.048380][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6516.048382][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6516.048384][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6516.048387][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6516.048389][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6516.048391][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6516.048393][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6516.048395][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6516.048397][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6516.048399][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6516.048401][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6516.048403][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6516.048405][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6516.048408][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6516.048410][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6516.048412][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6516.048414][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6516.048415][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6516.048416][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6516.048418][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6516.048420][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6516.048421][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6516.048424][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6516.048425][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6516.048427][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6516.048429][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6516.048430][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6516.048432][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6516.048434][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6516.048435][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6516.048437][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6516.048438][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6516.048441][    C2]  vfs_write (fs/read_write.c:686)
[ 6516.048443][    C2]  ksys_write (fs/read_write.c:739)
[ 6516.048445][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6516.048446][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6516.048449][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6516.048450][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6516.048452][    C2] RIP: 0033:0x7f814975fc5e
[ 6516.048454][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6516.048455][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6516.048457][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6516.048462][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6516.048463][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6516.048464][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6516.048464][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6522.193037][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6522.193163][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6522.193303][    C2] NMI backtrace for cpu 2
| [ 6522.193313][    C2] Tainted: [L]=SOFTLOCKUP
[ 6522.193314][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6522.193315][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 6522.193319][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 6522.193320][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 6522.193322][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 6522.193324][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 6522.193325][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 6522.193325][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 6522.193326][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 6522.193329][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6522.193332][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6522.193333][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6522.193334][    C2] PKRU: 55555554
[ 6522.193335][    C2] Call Trace:
[ 6522.193338][    C2]  <IRQ>
[ 6522.193341][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 6522.193343][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 6522.193346][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 6522.193347][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 6522.193350][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6522.193352][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6522.193354][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6522.193356][    C2]  </IRQ>
[ 6522.193357][    C2]  <TASK>
[ 6522.193358][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6522.193360][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6522.193362][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6522.193363][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6522.193364][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6522.193365][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6522.193365][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6522.193366][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6522.193367][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6522.193368][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6522.193371][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6522.193373][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6522.193375][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6522.193377][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6522.193379][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6522.193381][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6522.193383][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6522.193386][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6522.193389][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6522.193390][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6522.193393][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6522.193395][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6522.193398][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6522.193399][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6522.193401][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6522.193403][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6522.193406][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6522.193408][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6522.193410][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6522.193412][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6522.193414][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6522.193417][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6522.193419][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6522.193421][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6522.193423][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6522.193424][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6522.193426][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6522.193428][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6522.193429][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6522.193431][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6522.193433][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6522.193435][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6522.193436][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6522.193438][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6522.193440][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6522.193441][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6522.193443][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6522.193445][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6522.193446][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6522.193448][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6522.193450][    C2]  vfs_write (fs/read_write.c:686)
[ 6522.193453][    C2]  ksys_write (fs/read_write.c:739)
[ 6522.193454][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6522.193456][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6522.193458][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6522.193460][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6522.193462][    C2] RIP: 0033:0x7f814975fc5e
[ 6522.193464][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6522.193465][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6522.193466][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6522.193467][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6522.193468][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6522.193468][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6522.193469][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6548.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6548.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6548.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6548.394775][    C2] Tainted: [L]=SOFTLOCKUP
[ 6548.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6548.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6548.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6548.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6548.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6548.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6548.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6548.394786][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6548.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6548.394789][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6548.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6548.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6548.394795][    C2] PKRU: 55555554
[ 6548.394796][    C2] Call Trace:
[ 6548.394800][    C2]  <TASK>
[ 6548.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6548.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6548.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6548.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6548.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6548.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6548.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6548.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6548.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6548.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6548.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6548.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6548.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6548.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6548.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6548.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6548.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6548.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6548.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6548.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6548.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6548.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6548.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6548.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6548.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6548.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6548.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6548.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6548.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6548.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6548.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6548.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6548.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6548.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6548.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6548.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6548.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6548.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6548.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6548.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6548.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 6548.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 6548.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6548.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6548.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6548.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6548.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 6548.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6548.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6548.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6548.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6548.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6548.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6548.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6576.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6576.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6576.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6576.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 6576.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6576.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6576.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6576.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6576.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6576.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6576.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6576.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6576.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6576.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6576.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6576.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6576.394788][    C2] PKRU: 55555554
[ 6576.394788][    C2] Call Trace:
[ 6576.394792][    C2]  <TASK>
[ 6576.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6576.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6576.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6576.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6576.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6576.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6576.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6576.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6576.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6576.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6576.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6576.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6576.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6576.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6576.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6576.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6576.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6576.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6576.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6576.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6576.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6576.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6576.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6576.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6576.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6576.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6576.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6576.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6576.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6576.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6576.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6576.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6576.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6576.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6576.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6576.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6576.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6576.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6576.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6576.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6576.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 6576.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 6576.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6576.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6576.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6576.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6576.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 6576.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6576.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6576.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6576.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6576.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6576.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6576.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6594.051624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6594.051841][    C2] rcu: 2-....: (5640047 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2192152
| [ 6594.052149][    C2] rcu: (t=5642279 jiffies g=521497 q=114832 ncpus=4)
| [ 6594.052279][    C2] Tainted: [L]=SOFTLOCKUP
[ 6594.052279][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6594.052281][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6594.052285][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6594.052286][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6594.052288][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6594.052289][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6594.052290][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6594.052291][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6594.052292][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6594.052294][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6594.052297][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6594.052298][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6594.052299][    C2] PKRU: 55555554
[ 6594.052300][    C2] Call Trace:
[ 6594.052301][    C2]  <TASK>
[ 6594.052302][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6594.052304][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6594.052306][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6594.052309][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6594.052311][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6594.052313][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6594.052315][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6594.052318][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6594.052320][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6594.052322][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6594.052325][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6594.052327][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6594.052330][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6594.052331][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6594.052333][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6594.052335][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6594.052338][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6594.052340][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6594.052342][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6594.052344][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6594.052346][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6594.052349][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6594.052351][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6594.052353][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6594.052355][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6594.052357][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6594.052358][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6594.052360][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6594.052362][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6594.052363][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6594.052366][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6594.052367][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6594.052369][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6594.052371][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6594.052372][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6594.052374][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6594.052376][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6594.052378][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6594.052379][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6594.052381][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6594.052383][    C2]  vfs_write (fs/read_write.c:686)
[ 6594.052385][    C2]  ksys_write (fs/read_write.c:739)
[ 6594.052387][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6594.052389][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6594.052391][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6594.052393][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6594.052394][    C2] RIP: 0033:0x7f814975fc5e
[ 6594.052396][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6594.052397][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6594.052398][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6594.052399][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6594.052400][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6594.052401][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6594.052401][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6620.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6620.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6620.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6620.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 6620.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6620.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6620.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6620.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6620.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6620.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6620.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6620.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6620.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6620.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6620.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6620.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6620.394787][    C2] PKRU: 55555554
[ 6620.394788][    C2] Call Trace:
[ 6620.394791][    C2]  <TASK>
[ 6620.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6620.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6620.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6620.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6620.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6620.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6620.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6620.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6620.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6620.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6620.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6620.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6620.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6620.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6620.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6620.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6620.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6620.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6620.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6620.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6620.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6620.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6620.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6620.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6620.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6620.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6620.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6620.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6620.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6620.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6620.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6620.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6620.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6620.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6620.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6620.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6620.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6620.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6620.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6620.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6620.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 6620.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 6620.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6620.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6620.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6620.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6620.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 6620.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6620.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6620.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6620.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6620.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6620.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6620.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6620.496021][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6620.496136][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6620.496227][    C2] NMI backtrace for cpu 2
| [ 6620.496234][    C2] Tainted: [L]=SOFTLOCKUP
[ 6620.496235][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6620.496236][    C2] RIP: 0010:irq_entries_start (./arch/x86/include/asm/idtentry.h:551)
[ 6620.496239][    C2] Code: c9 45 31 c0 45 31 c9 45 31 d2 45 31 db 31 db 31 ed 45 31 e4 45 31 ed 45 31 f6 45 31 ff c3 90 66 66 2e 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 6a 20 e9 b5 11 00 00 cc cc cc cc cc f3 0f 1e fa 6a 21
All code
========
   0:	c9                   	leave
   1:	45 31 c0             	xor    %r8d,%r8d
   4:	45 31 c9             	xor    %r9d,%r9d
   7:	45 31 d2             	xor    %r10d,%r10d
   a:	45 31 db             	xor    %r11d,%r11d
   d:	31 db                	xor    %ebx,%ebx
   f:	31 ed                	xor    %ebp,%ebp
  11:	45 31 e4             	xor    %r12d,%r12d
  14:	45 31 ed             	xor    %r13d,%r13d
  17:	45 31 f6             	xor    %r14d,%r14d
  1a:	45 31 ff             	xor    %r15d,%r15d
  1d:	c3                   	ret
  1e:	90                   	nop
  1f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  26:	00 00 00 00 
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	6a 20                	push   $0x20
  30:	e9 b5 11 00 00       	jmp    0x11ea
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	f3 0f 1e fa          	endbr64
  3e:	6a 21                	push   $0x21

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	6a 20                	push   $0x20
   6:	e9 b5 11 00 00       	jmp    0x11c0
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	f3 0f 1e fa          	endbr64
  14:	6a 21                	push   $0x21
[ 6620.496240][    C2] RSP: 0018:ffa0000000617538 EFLAGS: 00000046
[ 6620.496242][    C2] RAX: ffe21c00024ac169 RBX: ffe21c00024ac169 RCX: ffe21c00024ac16a
[ 6620.496243][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6620.496244][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6620.496245][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6620.496246][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 6620.496248][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6620.496251][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6620.496252][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6620.496252][    C2] PKRU: 55555554
[ 6620.496253][    C2] Call Trace:
[ 6620.496254][    C2]  <TASK>
[ 6620.496255][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:98 (discriminator 1) mm/kasan/generic.c:115 (discriminator 1) mm/kasan/generic.c:140 (discriminator 1) mm/kasan/generic.c:172 (discriminator 1) mm/kasan/generic.c:191 (discriminator 1) mm/kasan/generic.c:200 (discriminator 1))
[ 6620.496257][    C2] Code: ff ff 48 85 c9 74 8c 4c 01 c9 eb 1b 0f 1f 00 66 66 2e 0f 1f 84 00 00 00 00 00 48 83 c0 01 48 39 c8 0f 84 6c ff ff ff 80 38 00 <74> ee e9 47 ff ff ff b8 01 00 00 00 c3 4c 89 d1 48 29 c1 49 89 cb
All code
========
   0:	ff                   	(bad)
   1:	ff 48 85             	decl   -0x7b(%rax)
   4:	c9                   	leave
   5:	74 8c                	je     0xffffffffffffff93
   7:	4c 01 c9             	add    %r9,%rcx
   a:	eb 1b                	jmp    0x27
   c:	0f 1f 00             	nopl   (%rax)
   f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 00 
  1a:	48 83 c0 01          	add    $0x1,%rax
  1e:	48 39 c8             	cmp    %rcx,%rax
  21:	0f 84 6c ff ff ff    	je     0xffffffffffffff93
  27:	80 38 00             	cmpb   $0x0,(%rax)
  2a:*	74 ee                	je     0x1a		<-- trapping instruction
  2c:	e9 47 ff ff ff       	jmp    0xffffffffffffff78
  31:	b8 01 00 00 00       	mov    $0x1,%eax
  36:	c3                   	ret
  37:	4c 89 d1             	mov    %r10,%rcx
  3a:	48 29 c1             	sub    %rax,%rcx
  3d:	49 89 cb             	mov    %rcx,%r11

Code starting with the faulting instruction
===========================================
   0:	74 ee                	je     0xfffffffffffffff0
   2:	e9 47 ff ff ff       	jmp    0xffffffffffffff4e
   7:	b8 01 00 00 00       	mov    $0x1,%eax
   c:	c3                   	ret
   d:	4c 89 d1             	mov    %r10,%rcx
  10:	48 29 c1             	sub    %rax,%rcx
  13:	49 89 cb             	mov    %rcx,%r11
[ 6620.496259][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000246
[ 6620.496261][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6620.496263][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6620.496265][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6620.496268][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6620.496270][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6620.496272][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6620.496274][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6620.496276][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6620.496279][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6620.496282][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6620.496283][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6620.496286][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6620.496288][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6620.496290][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6620.496292][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6620.496294][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6620.496296][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6620.496299][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6620.496301][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6620.496303][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6620.496305][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6620.496306][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6620.496309][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6620.496312][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6620.496313][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6620.496315][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6620.496317][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6620.496318][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6620.496320][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6620.496322][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6620.496323][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6620.496325][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6620.496327][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6620.496328][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6620.496330][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6620.496332][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6620.496333][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6620.496335][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6620.496337][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6620.496338][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6620.496340][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6620.496342][    C2]  vfs_write (fs/read_write.c:686)
[ 6620.496344][    C2]  ksys_write (fs/read_write.c:739)
[ 6620.496346][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6620.496348][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6620.496350][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6620.496360][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6620.496362][    C2] RIP: 0033:0x7f814975fc5e
[ 6620.496363][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6620.496364][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6620.496366][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6620.496367][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6620.496367][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6620.496368][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6620.496369][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6648.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6648.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6648.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6648.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 6648.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6648.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6648.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6648.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6648.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6648.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6648.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6648.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6648.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6648.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6648.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6648.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6648.394795][    C2] PKRU: 55555554
[ 6648.394796][    C2] Call Trace:
[ 6648.394799][    C2]  <TASK>
[ 6648.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6648.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6648.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6648.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6648.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6648.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6648.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6648.394818][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6648.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6648.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6648.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6648.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6648.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6648.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6648.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6648.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6648.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6648.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6648.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6648.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6648.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6648.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6648.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6648.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6648.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6648.394857][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6648.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6648.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6648.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6648.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6648.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6648.394868][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6648.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6648.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6648.394873][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6648.394875][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6648.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6648.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6648.394880][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6648.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6648.394884][    C2]  vfs_write (fs/read_write.c:686)
[ 6648.394886][    C2]  ksys_write (fs/read_write.c:739)
[ 6648.394888][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6648.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6648.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6648.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6648.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 6648.394898][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6648.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6648.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6648.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6648.394902][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6648.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6648.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6672.055625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6672.055858][    C2] rcu: 2-....: (5718019 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2222874
| [ 6672.056199][    C2] rcu: (t=5720283 jiffies g=521497 q=116355 ncpus=4)
| [ 6672.056364][    C2] Tainted: [L]=SOFTLOCKUP
[ 6672.056365][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6672.056366][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6672.056370][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6672.056372][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6672.056374][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6672.056375][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6672.056376][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6672.056377][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6672.056378][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6672.056380][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6672.056384][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6672.056385][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6672.056386][    C2] PKRU: 55555554
[ 6672.056386][    C2] Call Trace:
[ 6672.056387][    C2]  <TASK>
[ 6672.056388][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6672.056391][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6672.056393][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6672.056395][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6672.056398][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6672.056399][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6672.056402][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6672.056404][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6672.056407][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6672.056409][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6672.056411][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6672.056414][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6672.056416][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6672.056418][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6672.056420][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6672.056422][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6672.056424][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6672.056426][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6672.056428][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6672.056430][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6672.056432][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6672.056435][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6672.056437][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6672.056439][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6672.056441][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6672.056442][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6672.056444][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6672.056446][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6672.056448][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6672.056449][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6672.056451][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6672.056453][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6672.056454][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6672.056456][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6672.056458][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6672.056459][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6672.056461][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6672.056463][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6672.056464][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6672.056466][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6672.056468][    C2]  vfs_write (fs/read_write.c:686)
[ 6672.056470][    C2]  ksys_write (fs/read_write.c:739)
[ 6672.056472][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6672.056474][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6672.056476][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6672.056478][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6672.056479][    C2] RIP: 0033:0x7f814975fc5e
[ 6672.056481][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6672.056483][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6672.056484][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6672.056485][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6672.056486][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6672.056487][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6672.056487][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6696.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6696.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6696.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6696.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 6696.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6696.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6696.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6696.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6696.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6696.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6696.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6696.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6696.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6696.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6696.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6696.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6696.394787][    C2] PKRU: 55555554
[ 6696.394787][    C2] Call Trace:
[ 6696.394790][    C2]  <TASK>
[ 6696.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6696.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6696.394797][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6696.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6696.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6696.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6696.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6696.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6696.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6696.394813][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6696.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6696.394818][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6696.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6696.394822][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6696.394824][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6696.394826][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6696.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6696.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6696.394833][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6696.394835][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6696.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6696.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6696.394842][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6696.394844][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6696.394846][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6696.394847][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6696.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6696.394850][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6696.394852][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6696.394854][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6696.394856][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6696.394858][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6696.394859][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6696.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6696.394863][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6696.394864][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6696.394866][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6696.394868][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6696.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6696.394871][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6696.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 6696.394876][    C2]  ksys_write (fs/read_write.c:739)
[ 6696.394877][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6696.394879][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6696.394881][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6696.394883][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6696.394885][    C2] RIP: 0033:0x7f814975fc5e
[ 6696.394887][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6696.394888][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6696.394890][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6696.394891][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6696.394891][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6696.394892][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6696.394893][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6718.800978][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6718.801102][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6718.801253][    C2] NMI backtrace for cpu 2
| [ 6718.801262][    C2] Tainted: [L]=SOFTLOCKUP
[ 6718.801263][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6718.801265][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 6718.801269][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 6718.801270][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 6718.801272][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 6718.801273][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 6718.801274][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 6718.801275][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 6718.801276][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 6718.801279][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6718.801282][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6718.801283][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6718.801284][    C2] PKRU: 55555554
[ 6718.801284][    C2] Call Trace:
[ 6718.801287][    C2]  <IRQ>
[ 6718.801289][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 6718.801291][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 6718.801294][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 6718.801296][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 6718.801299][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6718.801301][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6718.801303][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6718.801305][    C2]  </IRQ>
[ 6718.801306][    C2]  <TASK>
[ 6718.801307][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6718.801309][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6718.801311][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6718.801312][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6718.801313][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6718.801314][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6718.801314][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6718.801315][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6718.801316][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6718.801317][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6718.801320][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6718.801322][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6718.801324][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6718.801326][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6718.801328][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6718.801330][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6718.801332][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6718.801335][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6718.801338][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6718.801340][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6718.801342][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6718.801345][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6718.801347][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6718.801349][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6718.801351][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6718.801353][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6718.801355][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6718.801357][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6718.801359][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6718.801361][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6718.801363][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6718.801366][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6718.801368][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6718.801370][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6718.801372][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6718.801373][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6718.801375][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6718.801377][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6718.801378][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6718.801380][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6718.801382][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6718.801384][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6718.801385][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6718.801387][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6718.801389][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6718.801390][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6718.801392][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6718.801394][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6718.801395][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6718.801397][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6718.801399][    C2]  vfs_write (fs/read_write.c:686)
[ 6718.801401][    C2]  ksys_write (fs/read_write.c:739)
[ 6718.801403][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6718.801405][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6718.801407][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6718.801409][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6718.801410][    C2] RIP: 0033:0x7f814975fc5e
[ 6718.801412][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6718.801413][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6718.801415][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6718.801415][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6718.801416][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6718.801417][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6718.801418][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6744.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6744.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6744.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6744.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 6744.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6744.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6744.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6744.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6744.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6744.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6744.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6744.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6744.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6744.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6744.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6744.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6744.394795][    C2] PKRU: 55555554
[ 6744.394796][    C2] Call Trace:
[ 6744.394799][    C2]  <TASK>
[ 6744.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6744.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6744.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6744.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6744.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6744.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6744.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6744.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6744.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6744.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6744.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6744.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6744.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6744.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6744.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6744.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6744.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6744.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6744.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6744.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6744.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6744.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6744.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6744.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6744.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6744.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6744.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6744.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6744.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6744.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6744.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6744.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6744.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6744.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6744.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6744.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6744.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6744.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6744.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6744.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6744.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 6744.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 6744.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6744.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6744.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6744.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6744.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 6744.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6744.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6744.394901][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6744.394902][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6744.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6744.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6744.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6750.059624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6750.059917][    C2] rcu: 2-....: (5795988 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2252682
| [ 6750.060199][    C2] rcu: (t=5798287 jiffies g=521497 q=117946 ncpus=4)
| [ 6750.060353][    C2] Tainted: [L]=SOFTLOCKUP
[ 6750.060354][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6750.060355][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6750.060358][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6750.060360][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6750.060362][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6750.060363][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6750.060364][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6750.060365][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6750.060366][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6750.060368][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6750.060370][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6750.060371][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6750.060372][    C2] PKRU: 55555554
[ 6750.060373][    C2] Call Trace:
[ 6750.060374][    C2]  <TASK>
[ 6750.060375][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6750.060377][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6750.060379][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6750.060382][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6750.060384][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6750.060386][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6750.060388][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6750.060391][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6750.060393][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6750.060395][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6750.060398][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6750.060400][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6750.060402][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6750.060404][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6750.060406][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6750.060408][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6750.060411][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6750.060412][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6750.060415][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6750.060417][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6750.060418][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6750.060421][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6750.060423][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6750.060425][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6750.060427][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6750.060429][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6750.060430][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6750.060432][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6750.060434][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6750.060435][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6750.060437][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6750.060439][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6750.060441][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6750.060442][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6750.060444][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6750.060446][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6750.060447][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6750.060449][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6750.060451][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6750.060452][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6750.060455][    C2]  vfs_write (fs/read_write.c:686)
[ 6750.060457][    C2]  ksys_write (fs/read_write.c:739)
[ 6750.060459][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6750.060461][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6750.060467][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6750.060468][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6750.060470][    C2] RIP: 0033:0x7f814975fc5e
[ 6750.060472][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6750.060473][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6750.060474][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6750.060475][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6750.060476][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6750.060477][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6750.060478][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6776.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6776.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6776.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6776.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 6776.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6776.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6776.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6776.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6776.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6776.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6776.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6776.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6776.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6776.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6776.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6776.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6776.394787][    C2] PKRU: 55555554
[ 6776.394787][    C2] Call Trace:
[ 6776.394790][    C2]  <TASK>
[ 6776.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6776.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6776.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6776.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6776.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6776.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6776.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6776.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6776.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6776.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6776.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6776.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6776.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6776.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6776.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6776.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6776.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6776.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6776.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6776.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6776.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6776.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6776.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6776.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6776.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6776.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6776.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6776.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6776.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6776.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6776.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6776.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6776.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6776.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6776.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6776.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6776.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6776.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6776.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6776.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6776.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 6776.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 6776.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6776.394881][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6776.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6776.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6776.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 6776.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6776.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6776.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6776.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6776.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6776.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6776.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6804.394756][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6804.394758][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6804.394760][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6804.394766][    C2] Tainted: [L]=SOFTLOCKUP
[ 6804.394767][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6804.394768][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6804.394771][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6804.394772][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6804.394773][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6804.394775][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6804.394775][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6804.394776][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6804.394777][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6804.394780][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6804.394783][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6804.394784][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6804.394785][    C2] PKRU: 55555554
[ 6804.394786][    C2] Call Trace:
[ 6804.394789][    C2]  <TASK>
[ 6804.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6804.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6804.394797][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6804.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6804.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6804.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6804.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6804.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6804.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6804.394813][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6804.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6804.394818][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6804.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6804.394822][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6804.394824][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6804.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6804.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6804.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6804.394833][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6804.394835][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6804.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6804.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6804.394842][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6804.394844][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6804.394846][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6804.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6804.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6804.394851][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6804.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6804.394854][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6804.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6804.394858][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6804.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6804.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6804.394863][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6804.394865][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6804.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6804.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6804.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6804.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6804.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 6804.394876][    C2]  ksys_write (fs/read_write.c:739)
[ 6804.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6804.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6804.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6804.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6804.394886][    C2] RIP: 0033:0x7f814975fc5e
[ 6804.394888][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6804.394889][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6804.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6804.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6804.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6804.394893][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6804.394894][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6817.103954][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6817.104078][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6817.104254][    C2] NMI backtrace for cpu 2
| [ 6817.104263][    C2] Tainted: [L]=SOFTLOCKUP
[ 6817.104264][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6817.104266][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 6817.104269][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 6817.104271][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 6817.104273][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 6817.104274][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 6817.104275][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 6817.104276][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 6817.104276][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 6817.104279][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6817.104283][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6817.104284][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6817.104284][    C2] PKRU: 55555554
[ 6817.104285][    C2] Call Trace:
[ 6817.104288][    C2]  <IRQ>
[ 6817.104291][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 6817.104293][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 6817.104295][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 6817.104297][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 6817.104300][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6817.104302][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6817.104304][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6817.104306][    C2]  </IRQ>
[ 6817.104307][    C2]  <TASK>
[ 6817.104308][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6817.104310][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6817.104312][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6817.104313][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6817.104314][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6817.104314][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6817.104315][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6817.104316][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6817.104317][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6817.104318][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6817.104321][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6817.104322][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6817.104324][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6817.104327][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6817.104329][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6817.104331][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6817.104333][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6817.104335][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6817.104338][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6817.104340][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6817.104342][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6817.104345][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6817.104347][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6817.104349][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6817.104351][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6817.104353][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6817.104355][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6817.104357][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6817.104359][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6817.104361][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6817.104363][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6817.104366][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6817.104368][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6817.104370][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6817.104372][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6817.104373][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6817.104374][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6817.104376][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6817.104378][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6817.104379][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6817.104382][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6817.104383][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6817.104385][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6817.104387][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6817.104388][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6817.104390][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6817.104391][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6817.104393][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6817.104395][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6817.104396][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6817.104399][    C2]  vfs_write (fs/read_write.c:686)
[ 6817.104401][    C2]  ksys_write (fs/read_write.c:739)
[ 6817.104402][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6817.104404][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6817.104406][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6817.104408][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6817.104409][    C2] RIP: 0033:0x7f814975fc5e
[ 6817.104412][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6817.104413][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6817.104414][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6817.104415][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6817.104416][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6817.104416][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6817.104417][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6828.063626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6828.063867][    C2] rcu: 2-....: (5873959 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2282104
| [ 6828.064139][    C2] rcu: (t=5876291 jiffies g=521497 q=119537 ncpus=4)
| [ 6828.064322][    C2] Tainted: [L]=SOFTLOCKUP
[ 6828.064323][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6828.064325][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6828.064330][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6828.064331][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6828.064333][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6828.064335][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6828.064336][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6828.064337][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6828.064338][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6828.064340][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6828.064343][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6828.064344][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6828.064345][    C2] PKRU: 55555554
[ 6828.064345][    C2] Call Trace:
[ 6828.064346][    C2]  <TASK>
[ 6828.064347][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6828.064350][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6828.064352][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6828.064354][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6828.064357][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6828.064358][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6828.064361][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6828.064363][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6828.064366][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6828.064368][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6828.064370][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6828.064373][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6828.064375][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6828.064376][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6828.064379][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6828.064381][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6828.064383][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6828.064385][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6828.064387][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6828.064389][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6828.064391][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6828.064394][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6828.064396][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6828.064398][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6828.064400][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6828.064401][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6828.064403][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6828.064405][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6828.064406][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6828.064408][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6828.064410][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6828.064412][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6828.064413][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6828.064415][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6828.064417][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6828.064418][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6828.064420][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6828.064422][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6828.064423][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6828.064425][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6828.064427][    C2]  vfs_write (fs/read_write.c:686)
[ 6828.064429][    C2]  ksys_write (fs/read_write.c:739)
[ 6828.064431][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6828.064433][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6828.064435][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6828.064437][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6828.064438][    C2] RIP: 0033:0x7f814975fc5e
[ 6828.064440][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6828.064442][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6828.064443][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6828.064444][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6828.064445][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6828.064445][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6828.064446][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6852.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6852.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6852.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6852.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 6852.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6852.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6852.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6852.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6852.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6852.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6852.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6852.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6852.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6852.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6852.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6852.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6852.394788][    C2] PKRU: 55555554
[ 6852.394789][    C2] Call Trace:
[ 6852.394792][    C2]  <TASK>
[ 6852.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6852.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6852.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6852.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6852.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6852.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6852.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6852.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6852.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6852.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6852.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6852.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6852.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6852.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6852.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6852.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6852.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6852.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6852.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6852.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6852.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6852.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6852.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6852.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6852.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6852.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6852.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6852.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6852.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6852.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6852.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6852.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6852.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6852.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6852.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6852.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6852.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6852.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6852.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6852.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6852.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 6852.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 6852.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6852.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6852.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6852.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6852.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 6852.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6852.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6852.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6852.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6852.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6852.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6852.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6880.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6880.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6880.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6880.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 6880.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6880.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6880.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6880.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6880.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6880.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6880.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6880.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6880.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6880.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6880.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6880.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6880.394786][    C2] PKRU: 55555554
[ 6880.394787][    C2] Call Trace:
[ 6880.394790][    C2]  <TASK>
[ 6880.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6880.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6880.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6880.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6880.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6880.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6880.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6880.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6880.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6880.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6880.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6880.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6880.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6880.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6880.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6880.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6880.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6880.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6880.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6880.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6880.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6880.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6880.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6880.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6880.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6880.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6880.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6880.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6880.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6880.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6880.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6880.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6880.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6880.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6880.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6880.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6880.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6880.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6880.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6880.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6880.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 6880.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 6880.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6880.394881][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6880.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6880.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6880.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 6880.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6880.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6880.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6880.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6880.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6880.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6880.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6906.067626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6906.067869][    C2] rcu: 2-....: (5951938 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2313904
| [ 6906.068135][    C2] rcu: (t=5954295 jiffies g=521497 q=120674 ncpus=4)
| [ 6906.068309][    C2] Tainted: [L]=SOFTLOCKUP
[ 6906.068310][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6906.068312][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6906.068316][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6906.068317][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6906.068319][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6906.068321][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6906.068322][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6906.068323][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6906.068323][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6906.068326][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6906.068329][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6906.068330][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6906.068331][    C2] PKRU: 55555554
[ 6906.068332][    C2] Call Trace:
[ 6906.068333][    C2]  <TASK>
[ 6906.068334][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6906.068336][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6906.068338][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6906.068341][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6906.068343][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6906.068345][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6906.068347][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6906.068350][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6906.068352][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6906.068354][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6906.068357][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6906.068359][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6906.068362][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6906.068363][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6906.068365][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6906.068367][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6906.068370][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6906.068372][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6906.068374][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6906.068376][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6906.068378][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6906.068381][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6906.068383][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6906.068385][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6906.068387][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6906.068388][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6906.068390][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6906.068392][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6906.068393][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6906.068394][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6906.068397][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6906.068398][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6906.068400][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6906.068402][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6906.068404][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6906.068405][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6906.068407][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6906.068409][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6906.068410][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6906.068412][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6906.068414][    C2]  vfs_write (fs/read_write.c:686)
[ 6906.068416][    C2]  ksys_write (fs/read_write.c:739)
[ 6906.068418][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6906.068420][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6906.068422][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6906.068423][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6906.068425][    C2] RIP: 0033:0x7f814975fc5e
[ 6906.068427][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6906.068428][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6906.068430][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6906.068430][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6906.068431][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6906.068432][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6906.068432][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6915.408049][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 6915.408206][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 6915.408315][    C2] NMI backtrace for cpu 2
| [ 6915.408324][    C2] Tainted: [L]=SOFTLOCKUP
[ 6915.408325][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6915.408326][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 6915.408330][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 6915.408332][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 6915.408334][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 6915.408335][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 6915.408336][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 6915.408337][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 6915.408338][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 6915.408341][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6915.408344][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6915.408345][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6915.408346][    C2] PKRU: 55555554
[ 6915.408347][    C2] Call Trace:
[ 6915.408349][    C2]  <IRQ>
[ 6915.408352][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 6915.408354][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 6915.408357][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 6915.408359][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 6915.408362][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 6915.408364][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 6915.408366][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 6915.408368][    C2]  </IRQ>
[ 6915.408369][    C2]  <TASK>
[ 6915.408370][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 6915.408372][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6915.408374][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6915.408375][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6915.408376][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6915.408377][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6915.408377][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6915.408378][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6915.408379][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6915.408380][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 6915.408383][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6915.408385][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6915.408387][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6915.408389][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6915.408391][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6915.408393][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6915.408396][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6915.408398][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6915.408401][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6915.408403][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6915.408405][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6915.408408][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6915.408410][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6915.408411][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6915.408414][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6915.408416][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6915.408418][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6915.408420][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6915.408422][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6915.408424][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6915.408426][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6915.408429][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6915.408431][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6915.408433][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6915.408435][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6915.408436][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6915.408437][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6915.408439][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6915.408441][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6915.408443][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6915.408445][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6915.408447][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6915.408448][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6915.408450][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6915.408451][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6915.408453][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6915.408455][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6915.408457][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6915.408458][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6915.408460][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6915.408462][    C2]  vfs_write (fs/read_write.c:686)
[ 6915.408464][    C2]  ksys_write (fs/read_write.c:739)
[ 6915.408466][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6915.408468][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6915.408470][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6915.408472][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6915.408473][    C2] RIP: 0033:0x7f814975fc5e
[ 6915.408475][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6915.408476][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6915.408478][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6915.408478][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6915.408479][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6915.408480][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6915.408481][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6940.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6940.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6940.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6940.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 6940.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6940.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6940.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6940.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6940.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6940.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6940.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6940.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6940.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6940.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6940.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6940.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6940.394797][    C2] PKRU: 55555554
[ 6940.394797][    C2] Call Trace:
[ 6940.394801][    C2]  <TASK>
[ 6940.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6940.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6940.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6940.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6940.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6940.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6940.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6940.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6940.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6940.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6940.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6940.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6940.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6940.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6940.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6940.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6940.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6940.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6940.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6940.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6940.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6940.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6940.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6940.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6940.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6940.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6940.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6940.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6940.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6940.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6940.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6940.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6940.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6940.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6940.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6940.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6940.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6940.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6940.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6940.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6940.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 6940.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 6940.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6940.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6940.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6940.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6940.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 6940.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6940.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6940.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6940.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6940.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6940.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6940.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6968.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 6968.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 6968.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 6968.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 6968.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6968.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6968.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6968.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6968.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6968.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6968.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6968.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6968.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6968.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6968.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6968.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6968.394787][    C2] PKRU: 55555554
[ 6968.394787][    C2] Call Trace:
[ 6968.394789][    C2]  <TASK>
[ 6968.394792][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6968.394794][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6968.394796][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6968.394799][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6968.394801][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6968.394803][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6968.394805][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6968.394807][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6968.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6968.394812][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6968.394815][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6968.394817][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6968.394819][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6968.394821][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6968.394823][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6968.394825][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6968.394828][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6968.394830][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6968.394832][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6968.394834][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6968.394836][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6968.394839][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6968.394841][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6968.394843][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6968.394845][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6968.394846][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6968.394848][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6968.394850][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6968.394852][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6968.394853][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6968.394856][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6968.394857][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6968.394859][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6968.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6968.394862][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6968.394864][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6968.394866][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6968.394867][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6968.394869][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6968.394871][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6968.394873][    C2]  vfs_write (fs/read_write.c:686)
[ 6968.394875][    C2]  ksys_write (fs/read_write.c:739)
[ 6968.394877][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6968.394879][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6968.394881][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6968.394883][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6968.394885][    C2] RIP: 0033:0x7f814975fc5e
[ 6968.394887][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6968.394889][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6968.394890][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6968.394891][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6968.394892][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6968.394892][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6968.394893][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 6984.071626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 6984.071853][    C2] rcu: 2-....: (6029908 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2344685
| [ 6984.072171][    C2] rcu: (t=6032299 jiffies g=521497 q=122265 ncpus=4)
| [ 6984.072323][    C2] Tainted: [L]=SOFTLOCKUP
[ 6984.072324][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 6984.072326][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 6984.072330][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 6984.072332][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 6984.072334][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 6984.072335][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 6984.072336][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 6984.072337][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 6984.072337][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 6984.072340][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 6984.072343][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6984.072344][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 6984.072344][    C2] PKRU: 55555554
[ 6984.072345][    C2] Call Trace:
[ 6984.072346][    C2]  <TASK>
[ 6984.072347][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 6984.072350][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 6984.072352][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 6984.072354][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 6984.072356][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 6984.072358][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6984.072361][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 6984.072363][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 6984.072366][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 6984.072367][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 6984.072370][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 6984.072372][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 6984.072374][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 6984.072376][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 6984.072378][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 6984.072380][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 6984.072383][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 6984.072385][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6984.072387][    C2]  ? release_sock (net/core/sock.c:3794)
[ 6984.072389][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 6984.072390][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 6984.072393][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6984.072395][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 6984.072397][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 6984.072399][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 6984.072401][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6984.072402][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 6984.072404][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 6984.072406][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 6984.072407][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6984.072409][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 6984.072411][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 6984.072412][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 6984.072414][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 6984.072416][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 6984.072417][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 6984.072419][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 6984.072421][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 6984.072422][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 6984.072424][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 6984.072426][    C2]  vfs_write (fs/read_write.c:686)
[ 6984.072428][    C2]  ksys_write (fs/read_write.c:739)
[ 6984.072430][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 6984.072432][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 6984.072434][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 6984.072435][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 6984.072437][    C2] RIP: 0033:0x7f814975fc5e
[ 6984.072439][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 6984.072440][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 6984.072441][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 6984.072442][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 6984.072443][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 6984.072444][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 6984.072444][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7008.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7008.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7008.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7008.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 7008.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7008.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7008.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7008.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7008.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7008.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7008.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7008.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7008.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7008.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7008.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7008.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7008.394787][    C2] PKRU: 55555554
[ 7008.394788][    C2] Call Trace:
[ 7008.394791][    C2]  <TASK>
[ 7008.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7008.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7008.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7008.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7008.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7008.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7008.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7008.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7008.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7008.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7008.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7008.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7008.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7008.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7008.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7008.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7008.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7008.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7008.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7008.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7008.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7008.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7008.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7008.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7008.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7008.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7008.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7008.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7008.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7008.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7008.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7008.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7008.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7008.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7008.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7008.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7008.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7008.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7008.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7008.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7008.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 7008.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 7008.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7008.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7008.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7008.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7008.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 7008.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7008.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7008.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7008.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7008.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7008.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7008.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7013.711996][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7013.712151][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7013.712270][    C2] NMI backtrace for cpu 2
| [ 7013.712279][    C2] Tainted: [L]=SOFTLOCKUP
[ 7013.712280][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7013.712281][    C2] RIP: 0010:ioapic_ack_level (./include/linux/irq.h:253 arch/x86/kernel/apic/io_apic.c:1602 arch/x86/kernel/apic/io_apic.c:1665)
[ 7013.712285][    C2] Code: 0f 1f 44 00 00 41 57 41 56 41 55 41 54 55 53 48 89 fb 48 8d 6b 10 48 83 ec 18 e8 8d 60 ff ff 48 89 c7 49 89 c4 e8 e2 bf ff ff <48> 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f
All code
========
   0:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   5:	41 57                	push   %r15
   7:	41 56                	push   %r14
   9:	41 55                	push   %r13
   b:	41 54                	push   %r12
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 89 fb             	mov    %rdi,%rbx
  12:	48 8d 6b 10          	lea    0x10(%rbx),%rbp
  16:	48 83 ec 18          	sub    $0x18,%rsp
  1a:	e8 8d 60 ff ff       	call   0xffffffffffff60ac
  1f:	48 89 c7             	mov    %rax,%rdi
  22:	49 89 c4             	mov    %rax,%r12
  25:	e8 e2 bf ff ff       	call   0xffffffffffffc00c
  2a:*	48 89 ea             	mov    %rbp,%rdx		<-- trapping instruction
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 c1 ea 03          	shr    $0x3,%rdx
  3b:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	48 89 ea             	mov    %rbp,%rdx
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  15:	0f                   	.byte 0xf
[ 7013.712287][    C2] RSP: 0018:ffa0000000218f38 EFLAGS: 00000086
[ 7013.712289][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 1fe22000004f660e
[ 7013.712290][    C2] RDX: ff110000027b3040 RSI: 0000000000000004 RDI: ff110000027b3070
[ 7013.712291][    C2] RBP: ff11000002980438 R08: ffffffffaa2da398 R09: fff3fc00000431df
[ 7013.712292][    C2] R10: 0000000000000003 R11: 1fe2200006a6666a R12: ff110000027b3040
[ 7013.712293][    C2] R13: ff11000002980438 R14: ff11000002980440 R15: ff1100000298047c
[ 7013.712295][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7013.712298][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7013.712299][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7013.712300][    C2] PKRU: 55555554
[ 7013.712300][    C2] Call Trace:
[ 7013.712303][    C2]  <IRQ>
[ 7013.712307][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 7013.712310][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7013.712313][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7013.712315][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7013.712317][    C2]  </IRQ>
[ 7013.712318][    C2]  <TASK>
[ 7013.712319][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7013.712321][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7013.712323][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7013.712324][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7013.712325][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7013.712326][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7013.712326][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7013.712327][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7013.712328][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7013.712329][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7013.712332][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7013.712334][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7013.712336][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7013.712338][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7013.712340][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7013.712342][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7013.712344][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7013.712347][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7013.712350][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7013.712352][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7013.712354][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7013.712357][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7013.712359][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7013.712360][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7013.712362][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7013.712364][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7013.712367][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7013.712369][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7013.712371][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7013.712373][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7013.712375][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7013.712378][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7013.712380][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7013.712382][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7013.712384][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7013.712385][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7013.712387][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7013.712389][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7013.712390][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7013.712392][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7013.712394][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7013.712396][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7013.712397][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7013.712399][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7013.712401][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7013.712402][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7013.712404][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7013.712406][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7013.712407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7013.712409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7013.712411][    C2]  vfs_write (fs/read_write.c:686)
[ 7013.712413][    C2]  ksys_write (fs/read_write.c:739)
[ 7013.712415][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7013.712417][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7013.712419][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7013.712421][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7013.712422][    C2] RIP: 0033:0x7f814975fc5e
[ 7013.712425][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7013.712426][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7013.712427][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7013.712428][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7013.712429][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7013.712429][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7013.712430][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7040.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7040.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7040.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7040.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 7040.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7040.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7040.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7040.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7040.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7040.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7040.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7040.394786][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7040.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7040.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7040.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7040.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7040.394795][    C2] PKRU: 55555554
[ 7040.394796][    C2] Call Trace:
[ 7040.394799][    C2]  <TASK>
[ 7040.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7040.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7040.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7040.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7040.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7040.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7040.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7040.394818][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7040.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7040.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7040.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7040.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7040.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7040.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7040.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7040.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7040.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7040.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7040.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7040.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7040.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7040.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7040.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7040.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7040.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7040.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7040.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7040.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7040.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7040.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7040.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7040.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7040.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7040.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7040.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7040.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7040.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7040.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7040.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7040.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7040.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 7040.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 7040.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7040.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7040.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7040.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7040.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 7040.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7040.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7040.394902][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7040.394903][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7040.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7040.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7040.394905][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7062.074627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7062.074851][    C2] rcu: 2-....: (6107878 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2375192
| [ 7062.075099][    C2] rcu: (t=6110302 jiffies g=521497 q=123844 ncpus=4)
| [ 7062.075301][    C2] Tainted: [L]=SOFTLOCKUP
[ 7062.075302][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7062.075303][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7062.075307][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7062.075309][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7062.075311][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7062.075312][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7062.075313][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7062.075314][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7062.075315][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7062.075317][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7062.075320][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7062.075321][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7062.075322][    C2] PKRU: 55555554
[ 7062.075323][    C2] Call Trace:
[ 7062.075324][    C2]  <TASK>
[ 7062.075325][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7062.075328][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7062.075330][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7062.075332][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7062.075334][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7062.075336][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7062.075339][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7062.075341][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7062.075344][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7062.075346][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7062.075348][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7062.075351][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7062.075353][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7062.075354][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7062.075356][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7062.075358][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7062.075361][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7062.075363][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7062.075365][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7062.075367][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7062.075368][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7062.075372][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7062.075374][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7062.075376][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7062.075378][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7062.075379][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7062.075381][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7062.075383][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7062.075384][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7062.075385][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7062.075388][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7062.075390][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7062.075391][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7062.075393][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7062.075394][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7062.075396][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7062.075398][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7062.075399][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7062.075401][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7062.075403][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7062.075405][    C2]  vfs_write (fs/read_write.c:686)
[ 7062.075407][    C2]  ksys_write (fs/read_write.c:739)
[ 7062.075409][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7062.075411][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7062.075413][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7062.075415][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7062.075416][    C2] RIP: 0033:0x7f814975fc5e
[ 7062.075418][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7062.075419][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7062.075421][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7062.075422][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7062.075423][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7062.075423][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7062.075424][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7088.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7088.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7088.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7088.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 7088.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7088.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7088.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7088.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7088.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7088.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7088.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7088.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7088.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7088.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7088.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7088.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7088.394787][    C2] PKRU: 55555554
[ 7088.394788][    C2] Call Trace:
[ 7088.394791][    C2]  <TASK>
[ 7088.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7088.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7088.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7088.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7088.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7088.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7088.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7088.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7088.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7088.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7088.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7088.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7088.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7088.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7088.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7088.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7088.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7088.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7088.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7088.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7088.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7088.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7088.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7088.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7088.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7088.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7088.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7088.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7088.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7088.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7088.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7088.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7088.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7088.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7088.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7088.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7088.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7088.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7088.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7088.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7088.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 7088.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 7088.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7088.394881][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7088.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7088.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7088.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 7088.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7088.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7088.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7088.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7088.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7088.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7088.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7112.016022][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7112.016146][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7112.016287][    C2] NMI backtrace for cpu 2
| [ 7112.016297][    C2] Tainted: [L]=SOFTLOCKUP
[ 7112.016298][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7112.016300][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 7112.016304][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 7112.016305][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 7112.016307][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 7112.016309][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 7112.016310][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 7112.016310][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 7112.016311][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 7112.016314][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7112.016318][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7112.016319][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7112.016320][    C2] PKRU: 55555554
[ 7112.016320][    C2] Call Trace:
[ 7112.016324][    C2]  <IRQ>
[ 7112.016327][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 7112.016329][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 7112.016332][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 7112.016334][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 7112.016337][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7112.016339][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7112.016341][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7112.016344][    C2]  </IRQ>
[ 7112.016344][    C2]  <TASK>
[ 7112.016345][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7112.016347][    C2] RIP: 0010:kasan_check_range (./arch/x86/include/asm/cpufeature.h:101 mm/kasan/kasan.h:334 mm/kasan/generic.c:188 mm/kasan/generic.c:200)
[ 7112.016349][    C2] Code: 00 00 00 00 0f 1f 40 d6 48 85 f6 0f 84 9a 01 00 00 48 89 f8 41 57 49 89 c8 48 01 f0 41 56 53 0f 82 f5 00 00 00 0f 1f 44 00 00 <48> b8 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   8:	48 85 f6             	test   %rsi,%rsi
   b:	0f 84 9a 01 00 00    	je     0x1ab
  11:	48 89 f8             	mov    %rdi,%rax
  14:	41 57                	push   %r15
  16:	49 89 c8             	mov    %rcx,%r8
  19:	48 01 f0             	add    %rsi,%rax
  1c:	41 56                	push   %r14
  1e:	53                   	push   %rbx
  1f:	0f 82 f5 00 00 00    	jb     0x11a
  25:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  2a:*	48 b8 00 00 00 00 00 	movabs $0xff00000000000000,%rax		<-- trapping instruction
  31:	00 00 ff 
  34:	eb 0a                	jmp    0x40
  36:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  3d:	80 ff ff 

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xff00000000000000,%rax
   7:	00 00 ff 
   a:	eb 0a                	jmp    0x16
   c:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  13:	80 ff ff 
[ 7112.016350][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000282
[ 7112.016351][    C2] RAX: ff11000012560b4c RBX: ff11000012560b48 RCX: ffffffffac5390f1
[ 7112.016352][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7112.016353][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7112.016354][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7112.016354][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7112.016356][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7112.016358][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7112.016361][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7112.016363][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7112.016365][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7112.016367][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7112.016369][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7112.016371][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7112.016373][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7112.016375][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7112.016378][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7112.016381][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7112.016383][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7112.016385][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7112.016388][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7112.016390][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7112.016391][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7112.016394][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7112.016396][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7112.016398][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7112.016400][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7112.016402][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7112.016404][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7112.016406][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7112.016409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7112.016411][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7112.016413][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7112.016415][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7112.016416][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7112.016418][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7112.016420][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7112.016422][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7112.016423][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7112.016425][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7112.016427][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7112.016429][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7112.016430][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7112.016432][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7112.016434][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7112.016435][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7112.016437][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7112.016439][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7112.016440][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7112.016443][    C2]  vfs_write (fs/read_write.c:686)
[ 7112.016445][    C2]  ksys_write (fs/read_write.c:739)
[ 7112.016447][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7112.016449][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7112.016451][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7112.016453][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7112.016454][    C2] RIP: 0033:0x7f814975fc5e
[ 7112.016457][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7112.016458][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7112.016459][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7112.016460][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7112.016461][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7112.016462][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7112.016463][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7136.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7136.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7136.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7136.394779][    C2] Tainted: [L]=SOFTLOCKUP
[ 7136.394780][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7136.394781][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7136.394784][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 7136.394785][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 7136.394787][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7136.394788][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7136.394789][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7136.394790][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7136.394790][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7136.394793][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7136.394796][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7136.394797][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7136.394798][    C2] PKRU: 55555554
[ 7136.394799][    C2] Call Trace:
[ 7136.394802][    C2]  <TASK>
[ 7136.394805][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7136.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7136.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7136.394812][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7136.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7136.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7136.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7136.394821][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7136.394824][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7136.394826][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7136.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7136.394831][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7136.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7136.394835][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7136.394837][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7136.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7136.394842][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7136.394844][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7136.394846][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7136.394848][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7136.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7136.394853][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7136.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7136.394857][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7136.394859][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7136.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7136.394862][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7136.394864][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7136.394866][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7136.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7136.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7136.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7136.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7136.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7136.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7136.394878][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7136.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7136.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7136.394883][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7136.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7136.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 7136.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 7136.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7136.394893][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7136.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7136.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7136.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 7136.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7136.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7136.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7136.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7136.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7136.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7136.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7140.078625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7140.078921][    C2] rcu: 2-....: (6185848 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2408921
| [ 7140.079136][    C2] rcu: (t=6188306 jiffies g=521497 q=125442 ncpus=4)
| [ 7140.079272][    C2] Tainted: [L]=SOFTLOCKUP
[ 7140.079273][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7140.079274][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7140.079277][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7140.079279][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7140.079281][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7140.079282][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7140.079282][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7140.079283][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7140.079284][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7140.079286][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7140.079289][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7140.079290][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7140.079291][    C2] PKRU: 55555554
[ 7140.079292][    C2] Call Trace:
[ 7140.079292][    C2]  <TASK>
[ 7140.079293][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7140.079296][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7140.079298][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7140.079300][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7140.079302][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7140.079304][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7140.079307][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7140.079309][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7140.079312][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7140.079313][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7140.079316][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7140.079318][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7140.079321][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7140.079322][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7140.079324][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7140.079326][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7140.079329][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7140.079331][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7140.079333][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7140.079335][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7140.079336][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7140.079340][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7140.079342][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7140.079343][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7140.079345][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7140.079347][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7140.079348][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7140.079350][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7140.079352][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7140.079353][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7140.079355][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7140.079357][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7140.079359][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7140.079361][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7140.079362][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7140.079364][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7140.079365][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7140.079367][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7140.079369][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7140.079370][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7140.079373][    C2]  vfs_write (fs/read_write.c:686)
[ 7140.079375][    C2]  ksys_write (fs/read_write.c:739)
[ 7140.079377][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7140.079379][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7140.079381][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7140.079382][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7140.079384][    C2] RIP: 0033:0x7f814975fc5e
[ 7140.079386][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7140.079387][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7140.079388][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7140.079389][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7140.079390][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7140.079391][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7140.079392][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7164.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7164.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7164.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7164.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 7164.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7164.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7164.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7164.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7164.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7164.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7164.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7164.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7164.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7164.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7164.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7164.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7164.394787][    C2] PKRU: 55555554
[ 7164.394788][    C2] Call Trace:
[ 7164.394791][    C2]  <TASK>
[ 7164.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7164.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7164.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7164.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7164.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7164.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7164.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7164.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7164.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7164.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7164.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7164.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7164.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7164.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7164.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7164.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7164.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7164.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7164.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7164.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7164.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7164.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7164.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7164.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7164.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7164.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7164.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7164.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7164.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7164.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7164.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7164.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7164.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7164.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7164.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7164.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7164.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7164.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7164.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7164.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7164.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 7164.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 7164.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7164.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7164.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7164.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7164.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 7164.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7164.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7164.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7164.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7164.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7164.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7164.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7192.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7192.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7192.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7192.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 7192.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7192.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7192.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7192.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7192.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7192.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7192.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7192.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7192.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7192.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7192.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7192.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7192.394788][    C2] PKRU: 55555554
[ 7192.394789][    C2] Call Trace:
[ 7192.394792][    C2]  <TASK>
[ 7192.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7192.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7192.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7192.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7192.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7192.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7192.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7192.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7192.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7192.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7192.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7192.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7192.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7192.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7192.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7192.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7192.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7192.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7192.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7192.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7192.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7192.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7192.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7192.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7192.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7192.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7192.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7192.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7192.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7192.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7192.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7192.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7192.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7192.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7192.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7192.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7192.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7192.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7192.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7192.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7192.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 7192.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 7192.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7192.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7192.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7192.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7192.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 7192.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7192.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7192.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7192.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7192.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7192.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7192.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7210.321020][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7210.321194][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7210.321301][    C2] NMI backtrace for cpu 2
| [ 7210.321311][    C2] Tainted: [L]=SOFTLOCKUP
[ 7210.321312][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7210.321314][    C2] RIP: 0010:native_apic_msr_read (./arch/x86/include/asm/msr.h:75 ./arch/x86/include/asm/msr.h:108 ./arch/x86/include/asm/apic.h:227)
[ 7210.321318][    C2] Code: 08 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 ff ff ff ff 81 ff e0 00 00 00 74 15 c1 ef 04 8d 8f 00 08 00 00 0f 32 <48> c1 e2 20 48 09 d0 66 90 c3 c3 48 83 ec 08 48 89 c6 31 d2 89 cf
All code
========
   0:	08 00                	or     %al,(%rax)
   2:	00 66 66             	add    %ah,0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	f3 0f 1e fa          	endbr64
  12:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  17:	81 ff e0 00 00 00    	cmp    $0xe0,%edi
  1d:	74 15                	je     0x34
  1f:	c1 ef 04             	shr    $0x4,%edi
  22:	8d 8f 00 08 00 00    	lea    0x800(%rdi),%ecx
  28:	0f 32                	rdmsr
  2a:*	48 c1 e2 20          	shl    $0x20,%rdx		<-- trapping instruction
  2e:	48 09 d0             	or     %rdx,%rax
  31:	66 90                	xchg   %ax,%ax
  33:	c3                   	ret
  34:	c3                   	ret
  35:	48 83 ec 08          	sub    $0x8,%rsp
  39:	48 89 c6             	mov    %rax,%rsi
  3c:	31 d2                	xor    %edx,%edx
  3e:	89 cf                	mov    %ecx,%edi

Code starting with the faulting instruction
===========================================
   0:	48 c1 e2 20          	shl    $0x20,%rdx
   4:	48 09 d0             	or     %rdx,%rax
   7:	66 90                	xchg   %ax,%ax
   9:	c3                   	ret
   a:	c3                   	ret
   b:	48 83 ec 08          	sub    $0x8,%rsp
   f:	48 89 c6             	mov    %rax,%rsi
  12:	31 d2                	xor    %edx,%edx
  14:	89 cf                	mov    %ecx,%edi
[ 7210.321320][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000012
[ 7210.321322][    C2] RAX: 0000000000000001 RBX: ff11000002980428 RCX: 0000000000000819
[ 7210.321323][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000019
[ 7210.321324][    C2] RBP: ff11000002980438 R08: ffffffffaa2da398 R09: fff3fc00000431df
[ 7210.321325][    C2] R10: 0000000000000003 R11: 1fe2200006a6666a R12: ff110000027b3040
[ 7210.321326][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 7210.321328][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7210.321332][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7210.321333][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7210.321334][    C2] PKRU: 55555554
[ 7210.321334][    C2] Call Trace:
[ 7210.321337][    C2]  <IRQ>
[ 7210.321338][    C2]  ioapic_ack_level (./arch/x86/include/asm/apic.h:404 arch/x86/kernel/apic/io_apic.c:1700)
[ 7210.321342][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 7210.321345][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7210.321347][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7210.321349][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7210.321351][    C2]  </IRQ>
[ 7210.321352][    C2]  <TASK>
[ 7210.321353][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7210.321355][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7210.321357][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7210.321358][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7210.321359][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7210.321360][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7210.321361][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7210.321361][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7210.321362][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7210.321363][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7210.321366][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7210.321368][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7210.321370][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7210.321372][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7210.321375][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7210.321376][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7210.321379][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7210.321381][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7210.321384][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7210.321386][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7210.321388][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7210.321391][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7210.321393][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7210.321395][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7210.321397][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7210.321399][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7210.321401][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7210.321403][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7210.321414][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7210.321416][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7210.321418][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7210.321421][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7210.321423][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7210.321425][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7210.321427][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7210.321428][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7210.321430][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7210.321432][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7210.321433][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7210.321435][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7210.321437][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7210.321439][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7210.321440][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7210.321442][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7210.321443][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7210.321445][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7210.321447][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7210.321449][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7210.321450][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7210.321452][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7210.321454][    C2]  vfs_write (fs/read_write.c:686)
[ 7210.321456][    C2]  ksys_write (fs/read_write.c:739)
[ 7210.321458][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7210.321460][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7210.321462][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7210.321464][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7210.321465][    C2] RIP: 0033:0x7f814975fc5e
[ 7210.321467][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7210.321468][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7210.321470][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7210.321470][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7210.321471][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7210.321472][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7210.321473][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7218.082626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7218.082925][    C2] rcu: 2-....: (6263818 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2442007
| [ 7218.083229][    C2] rcu: (t=6266310 jiffies g=521497 q=127026 ncpus=4)
| [ 7218.083370][    C2] Tainted: [L]=SOFTLOCKUP
[ 7218.083371][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7218.083372][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7218.083377][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7218.083378][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7218.083381][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7218.083382][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7218.083383][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7218.083384][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7218.083385][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7218.083387][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7218.083390][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7218.083391][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7218.083392][    C2] PKRU: 55555554
[ 7218.083392][    C2] Call Trace:
[ 7218.083393][    C2]  <TASK>
[ 7218.083394][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7218.083396][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7218.083399][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7218.083401][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7218.083403][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7218.083405][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7218.083408][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7218.083410][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7218.083413][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7218.083415][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7218.083417][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7218.083419][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7218.083422][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7218.083423][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7218.083425][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7218.083427][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7218.083430][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7218.083432][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7218.083434][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7218.083436][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7218.083437][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7218.083441][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7218.083443][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7218.083444][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7218.083446][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7218.083448][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7218.083449][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7218.083451][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7218.083453][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7218.083454][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7218.083457][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7218.083458][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7218.083460][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7218.083462][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7218.083463][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7218.083465][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7218.083467][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7218.083468][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7218.083470][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7218.083476][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7218.083479][    C2]  vfs_write (fs/read_write.c:686)
[ 7218.083481][    C2]  ksys_write (fs/read_write.c:739)
[ 7218.083483][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7218.083485][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7218.083487][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7218.083489][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7218.083490][    C2] RIP: 0033:0x7f814975fc5e
[ 7218.083492][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7218.083493][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7218.083495][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7218.083496][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7218.083496][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7218.083497][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7218.083498][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7244.394761][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7244.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7244.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7244.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 7244.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7244.394774][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:182 (discriminator 1) mm/kasan/generic.c:200 (discriminator 1))
[ 7244.394777][    C2] Code: 00 00 00 f3 0f 1e fa 48 89 f2 be f8 00 00 00 e9 9f a1 ab 01 0f 1f 40 00 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 48 85 f6 <0f> 84 9a 01 00 00 48 89 f8 41 57 49 89 c8 48 01 f0 41 56 53 0f 82
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 f3                	add    %dh,%bl
   4:	0f 1e fa             	nop    %edx
   7:	48 89 f2             	mov    %rsi,%rdx
   a:	be f8 00 00 00       	mov    $0xf8,%esi
   f:	e9 9f a1 ab 01       	jmp    0x1aba1b3
  14:	0f 1f 40 00          	nopl   0x0(%rax)
  18:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  1f:	00 00 00 00 
  23:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  27:	48 85 f6             	test   %rsi,%rsi
  2a:*	0f 84 9a 01 00 00    	je     0x1ca		<-- trapping instruction
  30:	48 89 f8             	mov    %rdi,%rax
  33:	41 57                	push   %r15
  35:	49 89 c8             	mov    %rcx,%r8
  38:	48 01 f0             	add    %rsi,%rax
  3b:	41 56                	push   %r14
  3d:	53                   	push   %rbx
  3e:	0f                   	.byte 0xf
  3f:	82                   	.byte 0x82

Code starting with the faulting instruction
===========================================
   0:	0f 84 9a 01 00 00    	je     0x1a0
   6:	48 89 f8             	mov    %rdi,%rax
   9:	41 57                	push   %r15
   b:	49 89 c8             	mov    %rcx,%r8
   e:	48 01 f0             	add    %rsi,%rax
  11:	41 56                	push   %r14
  13:	53                   	push   %rbx
  14:	0f                   	.byte 0xf
  15:	82                   	.byte 0x82
[ 7244.394778][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 7244.394780][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: ffffffffac5390f1
[ 7244.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7244.394782][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7244.394783][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7244.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7244.394786][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7244.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7244.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7244.394791][    C2] PKRU: 55555554
[ 7244.394791][    C2] Call Trace:
[ 7244.394795][    C2]  <TASK>
[ 7244.394796][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7244.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7244.394803][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7244.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7244.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7244.394810][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7244.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7244.394814][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7244.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7244.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7244.394821][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7244.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7244.394827][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7244.394829][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7244.394831][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7244.394833][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7244.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7244.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7244.394839][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7244.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7244.394843][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7244.394845][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7244.394848][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7244.394850][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7244.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7244.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7244.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7244.394857][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7244.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7244.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7244.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7244.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7244.394866][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7244.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7244.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7244.394871][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7244.394873][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7244.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7244.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7244.394878][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7244.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7244.394882][    C2]  vfs_write (fs/read_write.c:686)
[ 7244.394884][    C2]  ksys_write (fs/read_write.c:739)
[ 7244.394886][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7244.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7244.394890][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7244.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7244.394894][    C2] RIP: 0033:0x7f814975fc5e
[ 7244.394896][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7244.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7244.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7244.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7244.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7244.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7244.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7272.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7272.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7272.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7272.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 7272.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7272.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7272.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7272.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7272.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7272.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7272.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7272.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7272.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7272.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7272.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7272.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7272.394789][    C2] PKRU: 55555554
[ 7272.394790][    C2] Call Trace:
[ 7272.394793][    C2]  <TASK>
[ 7272.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7272.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7272.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7272.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7272.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7272.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7272.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7272.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7272.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7272.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7272.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7272.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7272.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7272.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7272.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7272.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7272.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7272.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7272.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7272.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7272.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7272.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7272.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7272.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7272.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7272.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7272.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7272.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7272.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7272.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7272.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7272.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7272.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7272.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7272.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7272.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7272.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7272.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7272.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7272.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7272.394878][    C2]  vfs_write (fs/read_write.c:686)
[ 7272.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 7272.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7272.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7272.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7272.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7272.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 7272.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7272.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7272.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7272.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7272.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7272.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7272.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7296.085625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7296.085850][    C2] rcu: 2-....: (6341797 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2473469
| [ 7296.086110][    C2] rcu: (t=6344313 jiffies g=521497 q=128166 ncpus=4)
| [ 7296.086294][    C2] Tainted: [L]=SOFTLOCKUP
[ 7296.086295][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7296.086297][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7296.086300][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7296.086302][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7296.086304][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7296.086305][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7296.086306][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7296.086307][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7296.086308][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7296.086310][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7296.086314][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7296.086315][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7296.086315][    C2] PKRU: 55555554
[ 7296.086316][    C2] Call Trace:
[ 7296.086317][    C2]  <TASK>
[ 7296.086318][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7296.086320][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7296.086323][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7296.086325][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7296.086327][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7296.086329][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7296.086332][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7296.086334][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7296.086337][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7296.086339][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7296.086341][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7296.086344][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7296.086346][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7296.086347][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7296.086349][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7296.086351][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7296.086354][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7296.086356][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7296.086358][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7296.086360][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7296.086362][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7296.086365][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7296.086367][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7296.086369][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7296.086371][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7296.086372][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7296.086373][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7296.086375][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7296.086377][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7296.086378][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7296.086381][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7296.086382][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7296.086384][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7296.086386][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7296.086387][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7296.086389][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7296.086390][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7296.086392][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7296.086394][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7296.086395][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7296.086398][    C2]  vfs_write (fs/read_write.c:686)
[ 7296.086400][    C2]  ksys_write (fs/read_write.c:739)
[ 7296.086402][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7296.086403][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7296.086405][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7296.086407][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7296.086409][    C2] RIP: 0033:0x7f814975fc5e
[ 7296.086411][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7296.086412][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7296.086413][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7296.086414][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7296.086415][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7296.086416][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7296.086417][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7308.624046][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7308.624172][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7308.624298][    C2] NMI backtrace for cpu 2
| [ 7308.624308][    C2] Tainted: [L]=SOFTLOCKUP
[ 7308.624309][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7308.624310][    C2] RIP: 0010:irq_entries_start (./arch/x86/include/asm/idtentry.h:551)
[ 7308.624314][    C2] Code: c9 45 31 c0 45 31 c9 45 31 d2 45 31 db 31 db 31 ed 45 31 e4 45 31 ed 45 31 f6 45 31 ff c3 90 66 66 2e 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 6a 20 e9 b5 11 00 00 cc cc cc cc cc f3 0f 1e fa 6a 21
All code
========
   0:	c9                   	leave
   1:	45 31 c0             	xor    %r8d,%r8d
   4:	45 31 c9             	xor    %r9d,%r9d
   7:	45 31 d2             	xor    %r10d,%r10d
   a:	45 31 db             	xor    %r11d,%r11d
   d:	31 db                	xor    %ebx,%ebx
   f:	31 ed                	xor    %ebp,%ebp
  11:	45 31 e4             	xor    %r12d,%r12d
  14:	45 31 ed             	xor    %r13d,%r13d
  17:	45 31 f6             	xor    %r14d,%r14d
  1a:	45 31 ff             	xor    %r15d,%r15d
  1d:	c3                   	ret
  1e:	90                   	nop
  1f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  26:	00 00 00 00 
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	6a 20                	push   $0x20
  30:	e9 b5 11 00 00       	jmp    0x11ea
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	f3 0f 1e fa          	endbr64
  3e:	6a 21                	push   $0x21

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	6a 20                	push   $0x20
   6:	e9 b5 11 00 00       	jmp    0x11c0
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	f3 0f 1e fa          	endbr64
  14:	6a 21                	push   $0x21
[ 7308.624315][    C2] RSP: 0018:ffa0000000617558 EFLAGS: 00000002
[ 7308.624318][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7308.624319][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7308.624319][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7308.624320][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7308.624321][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7308.624324][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7308.624327][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7308.624328][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7308.624328][    C2] PKRU: 55555554
[ 7308.624329][    C2] Call Trace:
[ 7308.624332][    C2]  <TASK>
[ 7308.624333][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7308.624335][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7308.624336][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7308.624340][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7308.624343][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7308.624345][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7308.624347][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7308.624349][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7308.624351][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7308.624354][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7308.624356][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7308.624359][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7308.624361][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7308.624363][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7308.624366][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7308.624368][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7308.624369][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7308.624371][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7308.624373][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7308.624376][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7308.624378][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7308.624380][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7308.624382][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7308.624384][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7308.624387][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7308.624389][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7308.624391][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7308.624393][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7308.624394][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7308.624395][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7308.624397][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7308.624399][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7308.624400][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7308.624403][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7308.624404][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7308.624406][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7308.624408][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7308.624409][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7308.624411][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7308.624413][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7308.624414][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7308.624416][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7308.624418][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7308.624420][    C2]  vfs_write (fs/read_write.c:686)
[ 7308.624422][    C2]  ksys_write (fs/read_write.c:739)
[ 7308.624424][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7308.624426][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7308.624428][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7308.624429][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7308.624431][    C2] RIP: 0033:0x7f814975fc5e
[ 7308.624433][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7308.624434][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7308.624436][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7308.624436][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7308.624437][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7308.624438][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7308.624438][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7336.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7336.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7336.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7336.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 7336.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7336.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7336.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7336.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7336.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7336.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7336.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7336.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7336.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7336.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7336.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7336.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7336.394795][    C2] PKRU: 55555554
[ 7336.394796][    C2] Call Trace:
[ 7336.394799][    C2]  <TASK>
[ 7336.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7336.394804][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7336.394806][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7336.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7336.394811][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7336.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7336.394815][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7336.394818][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7336.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7336.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7336.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7336.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7336.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7336.394831][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7336.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7336.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7336.394838][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7336.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7336.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7336.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7336.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7336.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7336.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7336.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7336.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7336.394857][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7336.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7336.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7336.394862][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7336.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7336.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7336.394868][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7336.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7336.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7336.394873][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7336.394875][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7336.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7336.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7336.394880][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7336.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7336.394884][    C2]  vfs_write (fs/read_write.c:686)
[ 7336.394886][    C2]  ksys_write (fs/read_write.c:739)
[ 7336.394888][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7336.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7336.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7336.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7336.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 7336.394898][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7336.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7336.394901][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7336.394902][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7336.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7336.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7336.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7364.394762][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7364.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7364.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7364.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 7364.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7364.394774][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7364.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7364.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7364.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7364.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7364.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7364.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7364.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7364.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7364.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7364.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7364.394790][    C2] PKRU: 55555554
[ 7364.394791][    C2] Call Trace:
[ 7364.394794][    C2]  <TASK>
[ 7364.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7364.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7364.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7364.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7364.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7364.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7364.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7364.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7364.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7364.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7364.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7364.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7364.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7364.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7364.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7364.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7364.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7364.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7364.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7364.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7364.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7364.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7364.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7364.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7364.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7364.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7364.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7364.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7364.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7364.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7364.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7364.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7364.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7364.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7364.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7364.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7364.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7364.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7364.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7364.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7364.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 7364.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 7364.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7364.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7364.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7364.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7364.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 7364.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7364.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7364.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7364.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7364.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7364.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7364.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7374.089625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7374.089939][    C2] rcu: 2-....: (6419768 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2507054
| [ 7374.090156][    C2] rcu: (t=6422317 jiffies g=521497 q=129686 ncpus=4)
| [ 7374.090290][    C2] Tainted: [L]=SOFTLOCKUP
[ 7374.090291][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7374.090292][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7374.090296][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7374.090298][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7374.090300][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7374.090301][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7374.090302][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7374.090303][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7374.090304][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7374.090306][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7374.090309][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7374.090310][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7374.090311][    C2] PKRU: 55555554
[ 7374.090311][    C2] Call Trace:
[ 7374.090312][    C2]  <TASK>
[ 7374.090313][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7374.090316][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7374.090318][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7374.090320][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7374.090322][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7374.090324][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7374.090327][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7374.090329][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7374.090332][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7374.090334][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7374.090336][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7374.090339][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7374.090341][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7374.090343][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7374.090345][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7374.090347][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7374.090349][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7374.090351][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7374.090353][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7374.090355][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7374.090357][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7374.090360][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7374.090362][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7374.090364][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7374.090366][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7374.090368][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7374.090369][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7374.090371][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7374.090373][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7374.090374][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7374.090376][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7374.090378][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7374.090380][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7374.090381][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7374.090383][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7374.090385][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7374.090386][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7374.090388][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7374.090389][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7374.090391][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7374.090393][    C2]  vfs_write (fs/read_write.c:686)
[ 7374.090395][    C2]  ksys_write (fs/read_write.c:739)
[ 7374.090397][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7374.090399][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7374.090401][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7374.090403][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7374.090404][    C2] RIP: 0033:0x7f814975fc5e
[ 7374.090406][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7374.090407][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7374.090409][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7374.090409][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7374.090410][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7374.090411][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7374.090412][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7400.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7400.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7400.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7400.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 7400.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7400.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7400.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7400.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7400.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7400.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7400.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7400.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7400.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7400.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7400.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7400.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7400.394787][    C2] PKRU: 55555554
[ 7400.394788][    C2] Call Trace:
[ 7400.394791][    C2]  <TASK>
[ 7400.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7400.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7400.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7400.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7400.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7400.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7400.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7400.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7400.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7400.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7400.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7400.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7400.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7400.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7400.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7400.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7400.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7400.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7400.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7400.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7400.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7400.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7400.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7400.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7400.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7400.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7400.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7400.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7400.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7400.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7400.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7400.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7400.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7400.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7400.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7400.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7400.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7400.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7400.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7400.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7400.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 7400.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 7400.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7400.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7400.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7400.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7400.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 7400.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7400.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7400.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7400.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7400.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7400.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7400.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7406.929086][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7406.929227][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7406.929339][    C2] NMI backtrace for cpu 2
| [ 7406.929349][    C2] Tainted: [L]=SOFTLOCKUP
[ 7406.929349][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7406.929351][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 7406.929354][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 7406.929356][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 7406.929358][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 7406.929359][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 7406.929360][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 7406.929361][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 7406.929362][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 7406.929365][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7406.929368][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7406.929369][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7406.929370][    C2] PKRU: 55555554
[ 7406.929371][    C2] Call Trace:
[ 7406.929373][    C2]  <IRQ>
[ 7406.929375][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 7406.929377][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 7406.929380][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 7406.929382][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 7406.929385][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7406.929387][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7406.929389][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7406.929391][    C2]  </IRQ>
[ 7406.929391][    C2]  <TASK>
[ 7406.929392][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7406.929394][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7406.929396][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7406.929397][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7406.929398][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7406.929399][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7406.929400][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7406.929400][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7406.929401][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7406.929402][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7406.929405][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7406.929407][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7406.929409][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7406.929411][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7406.929413][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7406.929415][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7406.929418][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7406.929420][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7406.929423][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7406.929425][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7406.929427][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7406.929430][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7406.929432][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7406.929433][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7406.929435][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7406.929437][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7406.929440][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7406.929442][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7406.929444][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7406.929446][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7406.929447][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7406.929450][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7406.929453][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7406.929454][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7406.929456][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7406.929458][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7406.929459][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7406.929461][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7406.929463][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7406.929464][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7406.929466][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7406.929468][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7406.929470][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7406.929471][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7406.929473][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7406.929475][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7406.929477][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7406.929478][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7406.929480][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7406.929481][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7406.929484][    C2]  vfs_write (fs/read_write.c:686)
[ 7406.929486][    C2]  ksys_write (fs/read_write.c:739)
[ 7406.929488][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7406.929489][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7406.929492][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7406.929493][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7406.929495][    C2] RIP: 0033:0x7f814975fc5e
[ 7406.929497][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7406.929498][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7406.929499][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7406.929500][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7406.929501][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7406.929501][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7406.929502][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7432.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7432.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7432.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7432.394775][    C2] Tainted: [L]=SOFTLOCKUP
[ 7432.394776][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7432.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7432.394780][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7432.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7432.394783][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7432.394784][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7432.394785][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7432.394786][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7432.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7432.394789][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7432.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7432.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7432.394794][    C2] PKRU: 55555554
[ 7432.394795][    C2] Call Trace:
[ 7432.394798][    C2]  <TASK>
[ 7432.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7432.394804][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7432.394806][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7432.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7432.394811][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7432.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7432.394815][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7432.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7432.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7432.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7432.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7432.394827][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7432.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7432.394831][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7432.394833][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7432.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7432.394838][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7432.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7432.394842][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7432.394844][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7432.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7432.394849][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7432.394851][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7432.394853][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7432.394855][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7432.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7432.394858][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7432.394860][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7432.394862][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7432.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7432.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7432.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7432.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7432.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7432.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7432.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7432.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7432.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7432.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7432.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7432.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 7432.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 7432.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7432.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7432.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7432.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7432.394894][    C2] RIP: 0033:0x7f814975fc5e
[ 7432.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7432.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7432.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7432.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7432.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7432.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7432.394902][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7452.092626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7452.092896][    C2] rcu: 2-....: (6497737 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2535815
| [ 7452.093139][    C2] rcu: (t=6500320 jiffies g=521497 q=131277 ncpus=4)
| [ 7452.093341][    C2] Tainted: [L]=SOFTLOCKUP
[ 7452.093342][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7452.093343][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7452.093347][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7452.093349][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7452.093351][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7452.093352][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7452.093353][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7452.093354][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7452.093355][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7452.093357][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7452.093360][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7452.093361][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7452.093362][    C2] PKRU: 55555554
[ 7452.093363][    C2] Call Trace:
[ 7452.093363][    C2]  <TASK>
[ 7452.093364][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7452.093367][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7452.093369][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7452.093371][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7452.093374][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7452.093375][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7452.093378][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7452.093381][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7452.093384][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7452.093385][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7452.093388][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7452.093390][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7452.093392][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7452.093394][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7452.093396][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7452.093398][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7452.093401][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7452.093403][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7452.093405][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7452.093407][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7452.093408][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7452.093411][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7452.093414][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7452.093415][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7452.093417][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7452.093419][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7452.093420][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7452.093422][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7452.093424][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7452.093425][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7452.093428][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7452.093429][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7452.093431][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7452.093433][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7452.093434][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7452.093436][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7452.093437][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7452.093439][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7452.093441][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7452.093442][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7452.093445][    C2]  vfs_write (fs/read_write.c:686)
[ 7452.093447][    C2]  ksys_write (fs/read_write.c:739)
[ 7452.093449][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7452.093451][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7452.093453][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7452.093454][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7452.093456][    C2] RIP: 0033:0x7f814975fc5e
[ 7452.093458][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7452.093459][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7452.093460][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7452.093461][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7452.093462][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7452.093463][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7452.093463][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7476.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7476.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7476.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7476.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 7476.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7476.394771][    C2] RIP: 0010:kasan_check_range (./arch/x86/include/asm/cpufeature.h:101 mm/kasan/kasan.h:334 mm/kasan/generic.c:188 mm/kasan/generic.c:200)
[ 7476.394774][    C2] Code: 00 00 00 00 0f 1f 40 d6 48 85 f6 0f 84 9a 01 00 00 48 89 f8 41 57 49 89 c8 48 01 f0 41 56 53 0f 82 f5 00 00 00 0f 1f 44 00 00 <48> b8 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   8:	48 85 f6             	test   %rsi,%rsi
   b:	0f 84 9a 01 00 00    	je     0x1ab
  11:	48 89 f8             	mov    %rdi,%rax
  14:	41 57                	push   %r15
  16:	49 89 c8             	mov    %rcx,%r8
  19:	48 01 f0             	add    %rsi,%rax
  1c:	41 56                	push   %r14
  1e:	53                   	push   %rbx
  1f:	0f 82 f5 00 00 00    	jb     0x11a
  25:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  2a:*	48 b8 00 00 00 00 00 	movabs $0xff00000000000000,%rax		<-- trapping instruction
  31:	00 00 ff 
  34:	eb 0a                	jmp    0x40
  36:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  3d:	80 ff ff 

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xff00000000000000,%rax
   7:	00 00 ff 
   a:	eb 0a                	jmp    0x16
   c:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  13:	80 ff ff 
[ 7476.394775][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000282
[ 7476.394777][    C2] RAX: ff11000012560b4c RBX: ff11000012560b48 RCX: ffffffffac5390f1
[ 7476.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7476.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7476.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7476.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7476.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7476.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7476.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7476.394788][    C2] PKRU: 55555554
[ 7476.394789][    C2] Call Trace:
[ 7476.394792][    C2]  <TASK>
[ 7476.394795][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7476.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7476.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7476.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7476.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7476.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7476.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7476.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7476.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7476.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7476.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7476.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7476.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7476.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7476.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7476.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7476.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7476.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7476.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7476.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7476.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7476.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7476.394846][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7476.394848][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7476.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7476.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7476.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7476.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7476.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7476.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7476.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7476.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7476.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7476.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7476.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7476.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7476.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7476.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7476.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7476.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7476.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7476.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 7476.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 7476.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7476.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7476.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7476.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7476.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 7476.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7476.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7476.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7476.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7476.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7476.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7476.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7504.394756][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7504.394758][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7504.394760][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7504.394766][    C2] Tainted: [L]=SOFTLOCKUP
[ 7504.394767][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7504.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7504.394771][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7504.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7504.394774][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7504.394775][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7504.394776][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7504.394777][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7504.394778][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7504.394780][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7504.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7504.394784][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7504.394785][    C2] PKRU: 55555554
[ 7504.394786][    C2] Call Trace:
[ 7504.394789][    C2]  <TASK>
[ 7504.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7504.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7504.394797][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7504.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7504.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7504.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7504.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7504.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7504.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7504.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7504.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7504.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7504.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7504.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7504.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7504.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7504.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7504.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7504.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7504.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7504.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7504.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7504.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7504.394844][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7504.394846][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7504.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7504.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7504.394851][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7504.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7504.394854][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7504.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7504.394858][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7504.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7504.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7504.394863][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7504.394865][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7504.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7504.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7504.394870][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7504.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7504.394874][    C2]  vfs_write (fs/read_write.c:686)
[ 7504.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 7504.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7504.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7504.394882][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7504.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7504.394886][    C2] RIP: 0033:0x7f814975fc5e
[ 7504.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7504.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7504.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7504.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7504.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7504.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7504.394894][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7505.232020][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7505.232147][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7505.232314][    C2] NMI backtrace for cpu 2
| [ 7505.232321][    C2] Tainted: [L]=SOFTLOCKUP
[ 7505.232322][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7505.232323][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 7505.232326][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 7505.232327][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 7505.232329][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 7505.232331][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 7505.232332][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 7505.232332][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 7505.232333][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 7505.232336][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7505.232338][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7505.232339][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7505.232340][    C2] PKRU: 55555554
[ 7505.232341][    C2] Call Trace:
[ 7505.232342][    C2]  <IRQ>
[ 7505.232344][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 7505.232346][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 7505.232348][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 7505.232350][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 7505.232353][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7505.232355][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7505.232357][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7505.232359][    C2]  </IRQ>
[ 7505.232360][    C2]  <TASK>
[ 7505.232360][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7505.232362][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7505.232364][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7505.232365][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7505.232366][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7505.232367][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7505.232368][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7505.232368][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7505.232369][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7505.232370][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7505.232373][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7505.232375][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7505.232377][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7505.232379][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7505.232381][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7505.232383][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7505.232386][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7505.232388][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7505.232391][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7505.232392][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7505.232395][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7505.232397][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7505.232400][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7505.232401][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7505.232403][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7505.232405][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7505.232408][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7505.232410][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7505.232412][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7505.232414][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7505.232415][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7505.232418][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7505.232420][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7505.232422][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7505.232424][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7505.232426][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7505.232427][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7505.232429][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7505.232431][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7505.232432][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7505.232434][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7505.232436][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7505.232438][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7505.232439][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7505.232441][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7505.232443][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7505.232444][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7505.232446][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7505.232448][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7505.232449][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7505.232452][    C2]  vfs_write (fs/read_write.c:686)
[ 7505.232454][    C2]  ksys_write (fs/read_write.c:739)
[ 7505.232456][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7505.232457][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7505.232460][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7505.232461][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7505.232463][    C2] RIP: 0033:0x7f814975fc5e
[ 7505.232464][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7505.232465][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7505.232467][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7505.232467][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7505.232468][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7505.232469][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7505.232470][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7530.096627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7530.096914][    C2] rcu: 2-....: (6575708 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2566209
| [ 7530.097213][    C2] rcu: (t=6578324 jiffies g=521497 q=132871 ncpus=4)
| [ 7530.097346][    C2] Tainted: [L]=SOFTLOCKUP
[ 7530.097347][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7530.097349][    C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30)
[ 7530.097354][    C2] Code: 8b 05 34 f0 b4 03 49 8b 40 20 48 39 c7 72 0f 48 05 00 80 00 00 48 39 c7 0f 82 0c 0f 22 ff 90 0f 0b 90 c3 0f 1f 80 00 00 00 00 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 8f f5 ff ff 0f 1f 40 00 66
All code
========
   0:	8b 05 34 f0 b4 03    	mov    0x3b4f034(%rip),%eax        # 0x3b4f03a
   6:	49 8b 40 20          	mov    0x20(%r8),%rax
   a:	48 39 c7             	cmp    %rax,%rdi
   d:	72 0f                	jb     0x1e
   f:	48 05 00 80 00 00    	add    $0x8000,%rax
  15:	48 39 c7             	cmp    %rax,%rdi
  18:	0f 82 0c 0f 22 ff    	jb     0xffffffffff220f2a
  1e:	90                   	nop
  1f:	0f 0b                	ud2
  21:	90                   	nop
  22:	c3                   	ret
  23:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5ca
  3b:	0f 1f 40 00          	nopl   0x0(%rax)
  3f:	66                   	data16

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5a0
  11:	0f 1f 40 00          	nopl   0x0(%rax)
  15:	66                   	data16
[ 7530.097356][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 7530.097358][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7530.097359][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7530.097360][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7530.097361][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7530.097362][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7530.097364][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7530.097367][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7530.097368][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7530.097369][    C2] PKRU: 55555554
[ 7530.097370][    C2] Call Trace:
[ 7530.097371][    C2]  <TASK>
[ 7530.097372][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7530.097374][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7530.097377][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7530.097379][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7530.097381][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7530.097383][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7530.097385][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7530.097388][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7530.097390][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7530.097393][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7530.097395][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7530.097397][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7530.097400][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7530.097402][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7530.097404][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7530.097406][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7530.097408][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7530.097410][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7530.097412][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7530.097414][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7530.097416][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7530.097418][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7530.097421][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7530.097423][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7530.097425][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7530.097427][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7530.097428][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7530.097430][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7530.097432][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7530.097433][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7530.097435][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7530.097437][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7530.097439][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7530.097440][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7530.097442][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7530.097443][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7530.097445][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7530.097447][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7530.097448][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7530.097450][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7530.097452][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7530.097454][    C2]  vfs_write (fs/read_write.c:686)
[ 7530.097456][    C2]  ksys_write (fs/read_write.c:739)
[ 7530.097458][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7530.097460][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7530.097462][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7530.097463][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7530.097465][    C2] RIP: 0033:0x7f814975fc5e
[ 7530.097467][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7530.097468][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7530.097470][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7530.097471][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7530.097471][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7530.097472][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7530.097473][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7556.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7556.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7556.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7556.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 7556.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7556.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7556.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7556.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7556.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7556.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7556.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7556.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7556.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7556.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7556.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7556.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7556.394788][    C2] PKRU: 55555554
[ 7556.394789][    C2] Call Trace:
[ 7556.394792][    C2]  <TASK>
[ 7556.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7556.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7556.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7556.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7556.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7556.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7556.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7556.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7556.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7556.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7556.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7556.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7556.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7556.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7556.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7556.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7556.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7556.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7556.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7556.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7556.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7556.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7556.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7556.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7556.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7556.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7556.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7556.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7556.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7556.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7556.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7556.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7556.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7556.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7556.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7556.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7556.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7556.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7556.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7556.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7556.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 7556.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 7556.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7556.394881][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7556.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7556.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7556.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 7556.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7556.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7556.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7556.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7556.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7556.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7556.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7584.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7584.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7584.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7584.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 7584.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7584.394770][    C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30)
[ 7584.394773][    C2] Code: 8b 05 34 f0 b4 03 49 8b 40 20 48 39 c7 72 0f 48 05 00 80 00 00 48 39 c7 0f 82 0c 0f 22 ff 90 0f 0b 90 c3 0f 1f 80 00 00 00 00 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 8f f5 ff ff 0f 1f 40 00 66
All code
========
   0:	8b 05 34 f0 b4 03    	mov    0x3b4f034(%rip),%eax        # 0x3b4f03a
   6:	49 8b 40 20          	mov    0x20(%r8),%rax
   a:	48 39 c7             	cmp    %rax,%rdi
   d:	72 0f                	jb     0x1e
   f:	48 05 00 80 00 00    	add    $0x8000,%rax
  15:	48 39 c7             	cmp    %rax,%rdi
  18:	0f 82 0c 0f 22 ff    	jb     0xffffffffff220f2a
  1e:	90                   	nop
  1f:	0f 0b                	ud2
  21:	90                   	nop
  22:	c3                   	ret
  23:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5ca
  3b:	0f 1f 40 00          	nopl   0x0(%rax)
  3f:	66                   	data16

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5a0
  11:	0f 1f 40 00          	nopl   0x0(%rax)
  15:	66                   	data16
[ 7584.394775][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 7584.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7584.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7584.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7584.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7584.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7584.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7584.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7584.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7584.394788][    C2] PKRU: 55555554
[ 7584.394788][    C2] Call Trace:
[ 7584.394791][    C2]  <TASK>
[ 7584.394793][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7584.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7584.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7584.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7584.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7584.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7584.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7584.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7584.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7584.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7584.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7584.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7584.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7584.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7584.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7584.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7584.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7584.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7584.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7584.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7584.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7584.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7584.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7584.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7584.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7584.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7584.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7584.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7584.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7584.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7584.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7584.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7584.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7584.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7584.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7584.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7584.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7584.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7584.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7584.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7584.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7584.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 7584.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 7584.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7584.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7584.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7584.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7584.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 7584.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7584.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7584.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7584.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7584.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7584.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7584.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7603.536018][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7603.536151][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7603.536298][    C2] NMI backtrace for cpu 2
| [ 7603.536308][    C2] Tainted: [L]=SOFTLOCKUP
[ 7603.536309][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7603.536311][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:98 (discriminator 1) mm/kasan/generic.c:115 (discriminator 1) mm/kasan/generic.c:140 (discriminator 1) mm/kasan/generic.c:172 (discriminator 1) mm/kasan/generic.c:191 (discriminator 1) mm/kasan/generic.c:200 (discriminator 1))
[ 7603.536314][    C2] Code: ff ff 48 85 c9 74 8c 4c 01 c9 eb 1b 0f 1f 00 66 66 2e 0f 1f 84 00 00 00 00 00 48 83 c0 01 48 39 c8 0f 84 6c ff ff ff 80 38 00 <74> ee e9 47 ff ff ff b8 01 00 00 00 c3 4c 89 d1 48 29 c1 49 89 cb
All code
========
   0:	ff                   	(bad)
   1:	ff 48 85             	decl   -0x7b(%rax)
   4:	c9                   	leave
   5:	74 8c                	je     0xffffffffffffff93
   7:	4c 01 c9             	add    %r9,%rcx
   a:	eb 1b                	jmp    0x27
   c:	0f 1f 00             	nopl   (%rax)
   f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  16:	00 00 00 00 
  1a:	48 83 c0 01          	add    $0x1,%rax
  1e:	48 39 c8             	cmp    %rcx,%rax
  21:	0f 84 6c ff ff ff    	je     0xffffffffffffff93
  27:	80 38 00             	cmpb   $0x0,(%rax)
  2a:*	74 ee                	je     0x1a		<-- trapping instruction
  2c:	e9 47 ff ff ff       	jmp    0xffffffffffffff78
  31:	b8 01 00 00 00       	mov    $0x1,%eax
  36:	c3                   	ret
  37:	4c 89 d1             	mov    %r10,%rcx
  3a:	48 29 c1             	sub    %rax,%rcx
  3d:	49 89 cb             	mov    %rcx,%r11

Code starting with the faulting instruction
===========================================
   0:	74 ee                	je     0xfffffffffffffff0
   2:	e9 47 ff ff ff       	jmp    0xffffffffffffff4e
   7:	b8 01 00 00 00       	mov    $0x1,%eax
   c:	c3                   	ret
   d:	4c 89 d1             	mov    %r10,%rcx
  10:	48 29 c1             	sub    %rax,%rcx
  13:	49 89 cb             	mov    %rcx,%r11
[ 7603.536316][    C2] RSP: 0018:ffa0000000218eb0 EFLAGS: 00000046
[ 7603.536318][    C2] RAX: ffe21c0000530095 RBX: ffe21c0000530095 RCX: ffe21c0000530096
[ 7603.536319][    C2] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ff110000029804a8
[ 7603.536320][    C2] RBP: ff110000029804b0 R08: ffffffffaa2da389 R09: ffe21c0000530095
[ 7603.536321][    C2] R10: ffe21c0000530096 R11: 1fe2200006a6666a R12: 1ff40000000431db
[ 7603.536322][    C2] R13: ff110000029804a8 R14: ff110000029804ab R15: ff1100000298047c
[ 7603.536324][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7603.536327][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7603.536328][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7603.536329][    C2] PKRU: 55555554
[ 7603.536330][    C2] Call Trace:
[ 7603.536333][    C2]  <IRQ>
[ 7603.536337][    C2]  do_raw_spin_lock (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116)
[ 7603.536340][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7603.536342][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7603.536344][    C2]  ? handle_irq_event (kernel/irq/internals.h:227 kernel/irq/handle.c:260)
[ 7603.536346][    C2]  handle_irq_event (kernel/irq/internals.h:227 kernel/irq/handle.c:260)
[ 7603.536348][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 7603.536350][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7603.536352][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7603.536354][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7603.536357][    C2]  </IRQ>
[ 7603.536358][    C2]  <TASK>
[ 7603.536359][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7603.536361][    C2] RIP: 0010:__kasan_check_read (mm/kasan/shadow.c:30)
[ 7603.536363][    C2] Code: 8b 05 34 f0 b4 03 49 8b 40 20 48 39 c7 72 0f 48 05 00 80 00 00 48 39 c7 0f 82 0c 0f 22 ff 90 0f 0b 90 c3 0f 1f 80 00 00 00 00 <f3> 0f 1e fa 48 8b 0c 24 89 f6 31 d2 e9 8f f5 ff ff 0f 1f 40 00 66
All code
========
   0:	8b 05 34 f0 b4 03    	mov    0x3b4f034(%rip),%eax        # 0x3b4f03a
   6:	49 8b 40 20          	mov    0x20(%r8),%rax
   a:	48 39 c7             	cmp    %rax,%rdi
   d:	72 0f                	jb     0x1e
   f:	48 05 00 80 00 00    	add    $0x8000,%rax
  15:	48 39 c7             	cmp    %rax,%rdi
  18:	0f 82 0c 0f 22 ff    	jb     0xffffffffff220f2a
  1e:	90                   	nop
  1f:	0f 0b                	ud2
  21:	90                   	nop
  22:	c3                   	ret
  23:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	89 f6                	mov    %esi,%esi
  34:	31 d2                	xor    %edx,%edx
  36:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5ca
  3b:	0f 1f 40 00          	nopl   0x0(%rax)
  3f:	66                   	data16

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	48 8b 0c 24          	mov    (%rsp),%rcx
   8:	89 f6                	mov    %esi,%esi
   a:	31 d2                	xor    %edx,%edx
   c:	e9 8f f5 ff ff       	jmp    0xfffffffffffff5a0
  11:	0f 1f 40 00          	nopl   0x0(%rax)
  15:	66                   	data16
[ 7603.536364][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 7603.536365][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7603.536366][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7603.536366][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7603.536367][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7603.536368][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7603.536369][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7603.536372][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7603.536374][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7603.536376][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7603.536378][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7603.536381][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7603.536382][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7603.536384][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7603.536387][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7603.536389][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7603.536392][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7603.536394][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7603.536396][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7603.536399][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7603.536401][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7603.536403][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7603.536405][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7603.536407][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7603.536409][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7603.536411][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7603.536413][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7603.536415][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7603.536417][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7603.536420][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7603.536422][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7603.536424][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7603.536426][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7603.536428][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7603.536429][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7603.536431][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7603.536433][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7603.536434][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7603.536437][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7603.536438][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7603.536440][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7603.536442][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7603.536443][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7603.536445][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7603.536447][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7603.536449][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7603.536450][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7603.536452][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7603.536454][    C2]  vfs_write (fs/read_write.c:686)
[ 7603.536457][    C2]  ksys_write (fs/read_write.c:739)
[ 7603.536459][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7603.536460][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7603.536463][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7603.536464][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7603.536466][    C2] RIP: 0033:0x7f814975fc5e
[ 7603.536468][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7603.536469][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7603.536471][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7603.536471][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7603.536472][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7603.536473][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7603.536474][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7608.099626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7608.099844][    C2] rcu: 2-....: (6653676 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2598586
| [ 7608.100087][    C2] rcu: (t=6656327 jiffies g=521497 q=134479 ncpus=4)
| [ 7608.100287][    C2] Tainted: [L]=SOFTLOCKUP
[ 7608.100288][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7608.100290][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7608.100294][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7608.100295][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7608.100298][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7608.100299][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7608.100300][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7608.100300][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7608.100301][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7608.100303][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7608.100306][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7608.100307][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7608.100308][    C2] PKRU: 55555554
[ 7608.100308][    C2] Call Trace:
[ 7608.100309][    C2]  <TASK>
[ 7608.100310][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7608.100312][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7608.100315][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7608.100317][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7608.100319][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7608.100321][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7608.100324][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7608.100326][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7608.100329][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7608.100331][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7608.100333][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7608.100336][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7608.100338][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7608.100339][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7608.100342][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7608.100343][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7608.100346][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7608.100348][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7608.100350][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7608.100352][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7608.100354][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7608.100357][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7608.100359][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7608.100361][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7608.100363][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7608.100364][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7608.100366][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7608.100368][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7608.100369][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7608.100371][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7608.100373][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7608.100375][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7608.100376][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7608.100378][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7608.100380][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7608.100381][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7608.100383][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7608.100385][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7608.100386][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7608.100388][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7608.100390][    C2]  vfs_write (fs/read_write.c:686)
[ 7608.100392][    C2]  ksys_write (fs/read_write.c:739)
[ 7608.100394][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7608.100396][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7608.100398][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7608.100399][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7608.100401][    C2] RIP: 0033:0x7f814975fc5e
[ 7608.100403][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7608.100404][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7608.100406][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7608.100406][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7608.100407][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7608.100408][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7608.100408][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7632.394764][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7632.394766][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7632.394768][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7632.394774][    C2] Tainted: [L]=SOFTLOCKUP
[ 7632.394775][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7632.394776][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7632.394779][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7632.394780][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7632.394782][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7632.394783][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7632.394784][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7632.394785][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7632.394786][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7632.394788][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7632.394792][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7632.394793][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7632.394794][    C2] PKRU: 55555554
[ 7632.394794][    C2] Call Trace:
[ 7632.394797][    C2]  <TASK>
[ 7632.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7632.394803][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7632.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7632.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7632.394810][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7632.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7632.394815][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7632.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7632.394820][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7632.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7632.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7632.394827][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7632.394829][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7632.394831][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7632.394833][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7632.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7632.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7632.394839][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7632.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7632.394843][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7632.394845][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7632.394848][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7632.394850][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7632.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7632.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7632.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7632.394857][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7632.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7632.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7632.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7632.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7632.394866][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7632.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7632.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7632.394871][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7632.394873][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7632.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7632.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7632.394878][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7632.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7632.394882][    C2]  vfs_write (fs/read_write.c:686)
[ 7632.394884][    C2]  ksys_write (fs/read_write.c:739)
[ 7632.394886][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7632.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7632.394890][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7632.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7632.394894][    C2] RIP: 0033:0x7f814975fc5e
[ 7632.394896][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7632.394897][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7632.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7632.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7632.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7632.394901][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7632.394902][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7660.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7660.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7660.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7660.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 7660.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7660.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7660.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7660.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7660.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7660.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7660.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7660.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7660.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7660.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7660.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7660.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7660.394787][    C2] PKRU: 55555554
[ 7660.394788][    C2] Call Trace:
[ 7660.394791][    C2]  <TASK>
[ 7660.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7660.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7660.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7660.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7660.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7660.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7660.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7660.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7660.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7660.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7660.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7660.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7660.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7660.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7660.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7660.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7660.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7660.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7660.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7660.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7660.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7660.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7660.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7660.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7660.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7660.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7660.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7660.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7660.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7660.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7660.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7660.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7660.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7660.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7660.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7660.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7660.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7660.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7660.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7660.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7660.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 7660.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 7660.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7660.394881][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7660.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7660.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7660.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 7660.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7660.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7660.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7660.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7660.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7660.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7660.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7686.103625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7686.103859][    C2] rcu: 2-....: (6731656 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2635120
| [ 7686.104108][    C2] rcu: (t=6734331 jiffies g=521497 q=135616 ncpus=4)
| [ 7686.104334][    C2] Tainted: [L]=SOFTLOCKUP
[ 7686.104335][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7686.104336][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7686.104340][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7686.104341][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7686.104343][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7686.104345][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7686.104345][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7686.104346][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7686.104347][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7686.104350][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7686.104353][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7686.104354][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7686.104355][    C2] PKRU: 55555554
[ 7686.104355][    C2] Call Trace:
[ 7686.104356][    C2]  <TASK>
[ 7686.104357][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7686.104360][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7686.104362][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7686.104364][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7686.104366][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7686.104368][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7686.104371][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7686.104373][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7686.104376][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7686.104378][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7686.104380][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7686.104383][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7686.104385][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7686.104387][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7686.104389][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7686.104391][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7686.104394][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7686.104395][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7686.104397][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7686.104399][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7686.104401][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7686.104404][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7686.104406][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7686.104408][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7686.104410][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7686.104411][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7686.104413][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7686.104415][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7686.104416][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7686.104418][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7686.104420][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7686.104422][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7686.104424][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7686.104425][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7686.104427][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7686.104429][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7686.104430][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7686.104432][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7686.104433][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7686.104435][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7686.104437][    C2]  vfs_write (fs/read_write.c:686)
[ 7686.104440][    C2]  ksys_write (fs/read_write.c:739)
[ 7686.104441][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7686.104443][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7686.104445][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7686.104447][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7686.104448][    C2] RIP: 0033:0x7f814975fc5e
[ 7686.104450][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7686.104451][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7686.104453][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7686.104454][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7686.104455][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7686.104455][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7686.104456][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7701.840065][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7701.840227][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7701.840343][    C2] NMI backtrace for cpu 2
| [ 7701.840355][    C2] Tainted: [L]=SOFTLOCKUP
[ 7701.840356][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7701.840357][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 7701.840361][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 7701.840363][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 7701.840365][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 7701.840366][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 7701.840367][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 7701.840368][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 7701.840369][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 7701.840372][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7701.840375][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7701.840376][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7701.840377][    C2] PKRU: 55555554
[ 7701.840378][    C2] Call Trace:
[ 7701.840380][    C2]  <IRQ>
[ 7701.840383][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 7701.840385][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 7701.840388][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 7701.840390][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 7701.840392][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7701.840394][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7701.840397][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7701.840399][    C2]  </IRQ>
[ 7701.840400][    C2]  <TASK>
[ 7701.840401][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7701.840403][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7701.840405][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7701.840406][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7701.840407][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7701.840408][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7701.840408][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7701.840409][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7701.840410][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7701.840411][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7701.840414][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7701.840416][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7701.840418][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7701.840420][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7701.840423][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7701.840424][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7701.840427][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7701.840429][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7701.840432][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7701.840434][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7701.840436][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7701.840439][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7701.840441][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7701.840443][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7701.840445][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7701.840447][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7701.840449][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7701.840451][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7701.840453][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7701.840455][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7701.840457][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7701.840461][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7701.840463][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7701.840464][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7701.840466][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7701.840468][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7701.840469][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7701.840471][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7701.840473][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7701.840474][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7701.840477][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7701.840478][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7701.840480][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7701.840482][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7701.840483][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7701.840485][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7701.840487][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7701.840489][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7701.840490][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7701.840492][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7701.840494][    C2]  vfs_write (fs/read_write.c:686)
[ 7701.840496][    C2]  ksys_write (fs/read_write.c:739)
[ 7701.840498][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7701.840500][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7701.840502][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7701.840504][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7701.840505][    C2] RIP: 0033:0x7f814975fc5e
[ 7701.840508][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7701.840509][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7701.840511][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7701.840512][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7701.840512][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7701.840513][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7701.840514][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7728.394768][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7728.394770][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7728.394772][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7728.394779][    C2] Tainted: [L]=SOFTLOCKUP
[ 7728.394780][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7728.394782][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7728.394785][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7728.394786][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7728.394788][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7728.394789][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7728.394790][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7728.394791][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7728.394792][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7728.394794][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7728.394797][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7728.394798][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7728.394799][    C2] PKRU: 55555554
[ 7728.394800][    C2] Call Trace:
[ 7728.394803][    C2]  <TASK>
[ 7728.394807][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7728.394810][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7728.394812][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7728.394815][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7728.394817][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7728.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7728.394822][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7728.394824][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7728.394828][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7728.394829][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7728.394832][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7728.394835][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7728.394837][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7728.394839][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7728.394841][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7728.394843][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7728.394845][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7728.394847][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7728.394849][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7728.394851][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7728.394853][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7728.394857][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7728.394859][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7728.394861][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7728.394863][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7728.394864][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7728.394866][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7728.394868][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7728.394869][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7728.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7728.394873][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7728.394875][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7728.394877][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7728.394878][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7728.394880][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7728.394882][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7728.394884][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7728.394886][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7728.394887][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7728.394889][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7728.394891][    C2]  vfs_write (fs/read_write.c:686)
[ 7728.394893][    C2]  ksys_write (fs/read_write.c:739)
[ 7728.394895][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7728.394897][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7728.394903][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7728.394905][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7728.394907][    C2] RIP: 0033:0x7f814975fc5e
[ 7728.394910][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7728.394911][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7728.394913][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7728.394914][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7728.394914][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7728.394915][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7728.394916][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7756.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7756.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7756.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7756.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 7756.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7756.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7756.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7756.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7756.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7756.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7756.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7756.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7756.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7756.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7756.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7756.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7756.394790][    C2] PKRU: 55555554
[ 7756.394790][    C2] Call Trace:
[ 7756.394793][    C2]  <TASK>
[ 7756.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7756.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7756.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7756.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7756.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7756.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7756.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7756.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7756.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7756.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7756.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7756.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7756.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7756.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7756.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7756.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7756.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7756.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7756.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7756.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7756.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7756.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7756.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7756.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7756.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7756.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7756.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7756.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7756.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7756.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7756.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7756.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7756.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7756.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7756.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7756.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7756.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7756.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7756.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7756.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7756.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 7756.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 7756.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7756.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7756.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7756.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7756.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 7756.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7756.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7756.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7756.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7756.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7756.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7756.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7764.107625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7764.107839][    C2] rcu: 2-....: (6809627 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2669390
| [ 7764.108126][    C2] rcu: (t=6812335 jiffies g=521497 q=137207 ncpus=4)
| [ 7764.108274][    C2] Tainted: [L]=SOFTLOCKUP
[ 7764.108275][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7764.108276][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7764.108280][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7764.108282][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7764.108284][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7764.108285][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7764.108286][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7764.108287][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7764.108288][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7764.108290][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7764.108293][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7764.108294][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7764.108295][    C2] PKRU: 55555554
[ 7764.108296][    C2] Call Trace:
[ 7764.108297][    C2]  <TASK>
[ 7764.108298][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7764.108300][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7764.108302][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7764.108305][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7764.108307][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7764.108309][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7764.108311][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7764.108313][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7764.108316][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7764.108318][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7764.108320][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7764.108323][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7764.108325][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7764.108327][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7764.108329][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7764.108331][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7764.108333][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7764.108335][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7764.108337][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7764.108339][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7764.108341][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7764.108344][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7764.108346][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7764.108348][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7764.108350][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7764.108351][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7764.108353][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7764.108355][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7764.108356][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7764.108358][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7764.108360][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7764.108362][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7764.108363][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7764.108365][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7764.108367][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7764.108368][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7764.108370][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7764.108372][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7764.108373][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7764.108375][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7764.108377][    C2]  vfs_write (fs/read_write.c:686)
[ 7764.108380][    C2]  ksys_write (fs/read_write.c:739)
[ 7764.108381][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7764.108383][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7764.108385][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7764.108387][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7764.108388][    C2] RIP: 0033:0x7f814975fc5e
[ 7764.108390][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7764.108392][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7764.108393][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7764.108394][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7764.108395][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7764.108396][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7764.108396][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7788.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7788.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7788.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7788.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 7788.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7788.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7788.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7788.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7788.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7788.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7788.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7788.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7788.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7788.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7788.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7788.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7788.394788][    C2] PKRU: 55555554
[ 7788.394789][    C2] Call Trace:
[ 7788.394792][    C2]  <TASK>
[ 7788.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7788.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7788.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7788.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7788.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7788.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7788.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7788.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7788.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7788.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7788.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7788.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7788.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7788.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7788.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7788.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7788.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7788.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7788.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7788.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7788.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7788.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7788.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7788.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7788.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7788.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7788.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7788.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7788.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7788.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7788.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7788.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7788.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7788.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7788.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7788.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7788.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7788.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7788.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7788.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7788.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 7788.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 7788.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7788.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7788.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7788.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7788.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 7788.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7788.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7788.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7788.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7788.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7788.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7788.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7800.145013][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7800.145171][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7800.145284][    C2] NMI backtrace for cpu 2
| [ 7800.145294][    C2] Tainted: [L]=SOFTLOCKUP
[ 7800.145295][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7800.145297][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 7800.145300][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 7800.145302][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 7800.145304][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 7800.145306][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 7800.145307][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 7800.145307][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 7800.145308][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 7800.145311][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7800.145314][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7800.145315][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7800.145316][    C2] PKRU: 55555554
[ 7800.145317][    C2] Call Trace:
[ 7800.145320][    C2]  <IRQ>
[ 7800.145323][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 7800.145325][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 7800.145328][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 7800.145330][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 7800.145333][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7800.145335][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7800.145337][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7800.145339][    C2]  </IRQ>
[ 7800.145340][    C2]  <TASK>
[ 7800.145341][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7800.145343][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7800.145345][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7800.145347][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7800.145348][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7800.145349][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7800.145349][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7800.145350][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7800.145351][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7800.145352][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7800.145355][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7800.145357][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7800.145359][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7800.145361][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7800.145363][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7800.145365][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7800.145368][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7800.145370][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7800.145373][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7800.145375][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7800.145377][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7800.145380][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7800.145382][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7800.145384][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7800.145386][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7800.145388][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7800.145390][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7800.145392][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7800.145394][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7800.145396][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7800.145398][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7800.145401][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7800.145403][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7800.145405][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7800.145407][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7800.145408][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7800.145410][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7800.145412][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7800.145413][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7800.145415][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7800.145417][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7800.145419][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7800.145420][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7800.145422][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7800.145424][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7800.145425][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7800.145427][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7800.145429][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7800.145430][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7800.145432][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7800.145434][    C2]  vfs_write (fs/read_write.c:686)
[ 7800.145436][    C2]  ksys_write (fs/read_write.c:739)
[ 7800.145438][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7800.145440][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7800.145442][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7800.145444][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7800.145445][    C2] RIP: 0033:0x7f814975fc5e
[ 7800.145448][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7800.145449][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7800.145450][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7800.145451][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7800.145452][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7800.145453][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7800.145453][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7824.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7824.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7824.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7824.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 7824.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7824.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7824.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7824.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7824.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7824.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7824.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7824.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7824.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7824.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7824.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7824.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7824.394796][    C2] PKRU: 55555554
[ 7824.394796][    C2] Call Trace:
[ 7824.394800][    C2]  <TASK>
[ 7824.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7824.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7824.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7824.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7824.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7824.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7824.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7824.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7824.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7824.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7824.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7824.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7824.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7824.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7824.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7824.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7824.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7824.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7824.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7824.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7824.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7824.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7824.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7824.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7824.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7824.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7824.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7824.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7824.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7824.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7824.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7824.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7824.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7824.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7824.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7824.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7824.394878][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7824.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7824.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7824.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7824.394885][    C2]  vfs_write (fs/read_write.c:686)
[ 7824.394887][    C2]  ksys_write (fs/read_write.c:739)
[ 7824.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7824.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7824.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7824.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7824.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 7824.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7824.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7824.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7824.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7824.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7824.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7824.394906][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7842.111625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7842.111895][    C2] rcu: 2-....: (6887598 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2703263
| [ 7842.112166][    C2] rcu: (t=6890339 jiffies g=521497 q=138798 ncpus=4)
| [ 7842.112301][    C2] Tainted: [L]=SOFTLOCKUP
[ 7842.112302][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7842.112304][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7842.112308][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7842.112309][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7842.112311][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7842.112312][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7842.112313][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7842.112314][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7842.112315][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7842.112318][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7842.112321][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7842.112322][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7842.112323][    C2] PKRU: 55555554
[ 7842.112323][    C2] Call Trace:
[ 7842.112324][    C2]  <TASK>
[ 7842.112325][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7842.112328][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7842.112330][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7842.112332][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7842.112335][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7842.112336][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7842.112339][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7842.112341][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7842.112344][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7842.112346][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7842.112348][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7842.112351][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7842.112353][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7842.112355][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7842.112357][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7842.112359][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7842.112361][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7842.112363][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7842.112365][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7842.112367][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7842.112369][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7842.112372][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7842.112374][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7842.112376][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7842.112378][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7842.112379][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7842.112381][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7842.112383][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7842.112384][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7842.112386][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7842.112388][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7842.112390][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7842.112392][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7842.112393][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7842.112395][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7842.112397][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7842.112398][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7842.112400][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7842.112402][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7842.112403][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7842.112406][    C2]  vfs_write (fs/read_write.c:686)
[ 7842.112408][    C2]  ksys_write (fs/read_write.c:739)
[ 7842.112410][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7842.112412][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7842.112414][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7842.112416][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7842.112417][    C2] RIP: 0033:0x7f814975fc5e
[ 7842.112419][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7842.112420][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7842.112422][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7842.112423][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7842.112424][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7842.112424][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7842.112425][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7868.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7868.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7868.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7868.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 7868.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7868.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7868.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7868.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7868.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7868.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7868.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7868.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7868.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7868.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7868.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7868.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7868.394788][    C2] PKRU: 55555554
[ 7868.394789][    C2] Call Trace:
[ 7868.394792][    C2]  <TASK>
[ 7868.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7868.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7868.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7868.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7868.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7868.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7868.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7868.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7868.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7868.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7868.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7868.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7868.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7868.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7868.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7868.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7868.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7868.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7868.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7868.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7868.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7868.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7868.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7868.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7868.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7868.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7868.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7868.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7868.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7868.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7868.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7868.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7868.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7868.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7868.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7868.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7868.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7868.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7868.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7868.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7868.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 7868.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 7868.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7868.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7868.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7868.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7868.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 7868.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7868.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7868.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7868.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7868.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7868.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7868.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7896.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7896.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7896.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7896.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 7896.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7896.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7896.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7896.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7896.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7896.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7896.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7896.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7896.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7896.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7896.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7896.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7896.394790][    C2] PKRU: 55555554
[ 7896.394790][    C2] Call Trace:
[ 7896.394793][    C2]  <TASK>
[ 7896.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7896.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7896.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7896.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7896.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7896.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7896.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7896.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7896.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7896.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7896.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7896.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7896.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7896.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7896.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7896.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7896.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7896.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7896.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7896.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7896.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7896.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7896.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7896.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7896.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7896.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7896.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7896.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7896.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7896.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7896.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7896.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7896.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7896.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7896.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7896.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7896.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7896.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7896.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7896.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7896.394878][    C2]  vfs_write (fs/read_write.c:686)
[ 7896.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 7896.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7896.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7896.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7896.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7896.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 7896.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7896.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7896.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7896.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7896.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7896.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7896.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7898.448107][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7898.448240][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7898.448369][    C2] NMI backtrace for cpu 2
| [ 7898.448377][    C2] Tainted: [L]=SOFTLOCKUP
[ 7898.448378][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7898.448379][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 7898.448382][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 7898.448384][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 7898.448386][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 7898.448387][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 7898.448388][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 7898.448388][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 7898.448389][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 7898.448391][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7898.448394][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7898.448395][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7898.448396][    C2] PKRU: 55555554
[ 7898.448396][    C2] Call Trace:
[ 7898.448399][    C2]  <IRQ>
[ 7898.448401][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 7898.448403][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 7898.448406][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 7898.448408][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 7898.448410][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7898.448412][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7898.448414][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7898.448416][    C2]  </IRQ>
[ 7898.448417][    C2]  <TASK>
[ 7898.448418][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7898.448420][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7898.448422][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7898.448423][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7898.448424][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7898.448425][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7898.448425][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7898.448426][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7898.448427][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7898.448428][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7898.448431][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7898.448433][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7898.448435][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7898.448437][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7898.448439][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7898.448441][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7898.448444][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7898.448446][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7898.448449][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7898.448450][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7898.448453][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7898.448455][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7898.448458][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7898.448459][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7898.448461][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7898.448463][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7898.448466][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7898.448468][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7898.448470][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7898.448472][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7898.448473][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7898.448476][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7898.448479][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7898.448480][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7898.448482][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7898.448484][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7898.448485][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7898.448487][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7898.448489][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7898.448490][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7898.448493][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7898.448494][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7898.448496][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7898.448498][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7898.448499][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7898.448501][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7898.448503][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7898.448504][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7898.448506][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7898.448507][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7898.448510][    C2]  vfs_write (fs/read_write.c:686)
[ 7898.448512][    C2]  ksys_write (fs/read_write.c:739)
[ 7898.448514][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7898.448515][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7898.448518][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7898.448519][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7898.448521][    C2] RIP: 0033:0x7f814975fc5e
[ 7898.448523][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7898.448524][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7898.448525][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7898.448526][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7898.448527][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7898.448527][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7898.448528][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7920.115627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7920.115901][    C2] rcu: 2-....: (6965568 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2736026
| [ 7920.116163][    C2] rcu: (t=6968343 jiffies g=521497 q=140395 ncpus=4)
| [ 7920.116364][    C2] Tainted: [L]=SOFTLOCKUP
[ 7920.116365][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7920.116367][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7920.116372][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7920.116373][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7920.116376][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7920.116377][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7920.116378][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7920.116379][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7920.116380][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7920.116382][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7920.116385][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7920.116386][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7920.116387][    C2] PKRU: 55555554
[ 7920.116388][    C2] Call Trace:
[ 7920.116389][    C2]  <TASK>
[ 7920.116390][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7920.116392][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7920.116395][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7920.116397][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7920.116399][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7920.116401][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7920.116403][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7920.116406][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7920.116409][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7920.116410][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7920.116413][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7920.116415][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7920.116418][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7920.116419][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7920.116421][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7920.116423][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7920.116426][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7920.116428][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7920.116430][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7920.116432][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7920.116433][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7920.116437][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7920.116439][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7920.116441][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7920.116443][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7920.116445][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7920.116446][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7920.116448][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7920.116450][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7920.116451][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7920.116453][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7920.116455][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7920.116457][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7920.116459][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7920.116460][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7920.116462][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7920.116464][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7920.116465][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7920.116467][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7920.116469][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7920.116471][    C2]  vfs_write (fs/read_write.c:686)
[ 7920.116473][    C2]  ksys_write (fs/read_write.c:739)
[ 7920.116475][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7920.116477][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7920.116479][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7920.116480][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7920.116482][    C2] RIP: 0033:0x7f814975fc5e
[ 7920.116484][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7920.116485][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7920.116487][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7920.116488][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7920.116489][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7920.116489][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7920.116490][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7944.394781][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7944.394784][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7944.394788][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7944.394798][    C2] Tainted: [L]=SOFTLOCKUP
[ 7944.394799][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7944.394802][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7944.394806][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7944.394807][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7944.394810][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7944.394811][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7944.394812][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7944.394813][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7944.394814][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7944.394817][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7944.394821][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7944.394822][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7944.394823][    C2] PKRU: 55555554
[ 7944.394824][    C2] Call Trace:
[ 7944.394828][    C2]  <TASK>
[ 7944.394832][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7944.394837][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7944.394839][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7944.394844][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7944.394848][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7944.394850][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7944.394853][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7944.394855][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7944.394859][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7944.394861][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7944.394863][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7944.394866][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7944.394869][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7944.394871][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7944.394873][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7944.394876][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7944.394880][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7944.394883][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7944.394885][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7944.394887][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7944.394890][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7944.394893][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7944.394897][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7944.394899][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7944.394903][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7944.394906][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7944.394908][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7944.394910][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7944.394914][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7944.394915][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7944.394918][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7944.394920][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7944.394922][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7944.394925][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7944.394926][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7944.394929][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7944.394931][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7944.394933][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7944.394935][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7944.394937][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7944.394939][    C2]  vfs_write (fs/read_write.c:686)
[ 7944.394942][    C2]  ksys_write (fs/read_write.c:739)
[ 7944.394944][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7944.394946][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7944.394949][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7944.394952][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7944.394956][    C2] RIP: 0033:0x7f814975fc5e
[ 7944.394960][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7944.394962][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7944.394964][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7944.394965][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7944.394966][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7944.394967][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7944.394968][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7972.394773][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 7972.394775][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 7972.394778][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 7972.394788][    C2] Tainted: [L]=SOFTLOCKUP
[ 7972.394789][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7972.394791][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7972.394794][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7972.394796][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7972.394798][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7972.394799][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7972.394800][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7972.394801][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7972.394802][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7972.394805][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7972.394808][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7972.394809][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7972.394810][    C2] PKRU: 55555554
[ 7972.394811][    C2] Call Trace:
[ 7972.394814][    C2]  <TASK>
[ 7972.394818][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7972.394823][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7972.394825][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7972.394829][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7972.394833][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7972.394834][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7972.394837][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7972.394840][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7972.394843][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7972.394845][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7972.394847][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7972.394850][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7972.394853][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7972.394855][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7972.394857][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7972.394859][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7972.394864][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7972.394866][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7972.394868][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7972.394871][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7972.394873][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7972.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7972.394880][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7972.394882][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7972.394885][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7972.394888][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7972.394890][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7972.394892][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7972.394895][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7972.394897][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7972.394900][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7972.394902][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7972.394904][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7972.394906][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7972.394908][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7972.394910][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7972.394912][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7972.394914][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7972.394916][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7972.394918][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7972.394920][    C2]  vfs_write (fs/read_write.c:686)
[ 7972.394923][    C2]  ksys_write (fs/read_write.c:739)
[ 7972.394925][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7972.394927][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7972.394929][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7972.394932][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7972.394936][    C2] RIP: 0033:0x7f814975fc5e
[ 7972.394939][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7972.394941][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7972.394942][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7972.394944][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7972.394945][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7972.394946][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7972.394947][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7996.752101][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 7996.752227][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 7996.752344][    C2] NMI backtrace for cpu 2
| [ 7996.752355][    C2] Tainted: [L]=SOFTLOCKUP
[ 7996.752356][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7996.752357][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 7996.752363][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 7996.752364][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 7996.752367][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 7996.752368][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 7996.752369][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 7996.752370][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 7996.752371][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 7996.752374][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7996.752378][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7996.752379][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7996.752380][    C2] PKRU: 55555554
[ 7996.752381][    C2] Call Trace:
[ 7996.752385][    C2]  <IRQ>
[ 7996.752389][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 7996.752391][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 7996.752395][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 7996.752396][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 7996.752399][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 7996.752403][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 7996.752406][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 7996.752409][    C2]  </IRQ>
[ 7996.752410][    C2]  <TASK>
[ 7996.752411][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 7996.752413][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7996.752416][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7996.752417][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7996.752418][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7996.752419][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7996.752420][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7996.752421][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7996.752422][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7996.752423][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 7996.752426][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7996.752428][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7996.752430][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7996.752433][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7996.752435][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7996.752437][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7996.752439][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7996.752442][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7996.752445][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7996.752447][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7996.752449][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7996.752452][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7996.752454][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7996.752456][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7996.752458][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7996.752460][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7996.752463][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7996.752465][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7996.752467][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7996.752470][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7996.752471][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7996.752474][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7996.752477][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7996.752479][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7996.752481][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7996.752482][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7996.752484][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7996.752486][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7996.752488][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7996.752489][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7996.752492][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7996.752493][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7996.752495][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7996.752497][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7996.752499][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7996.752501][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7996.752503][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7996.752504][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7996.752506][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7996.752508][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7996.752510][    C2]  vfs_write (fs/read_write.c:686)
[ 7996.752512][    C2]  ksys_write (fs/read_write.c:739)
[ 7996.752514][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7996.752516][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7996.752518][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7996.752520][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7996.752522][    C2] RIP: 0033:0x7f814975fc5e
[ 7996.752524][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7996.752526][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7996.752527][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7996.752528][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7996.752529][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7996.752530][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7996.752531][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 7998.119624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 7998.119826][    C2] rcu: 2-....: (7043539 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2767319
| [ 7998.120084][    C2] rcu: (t=7046347 jiffies g=521497 q=141986 ncpus=4)
| [ 7998.120251][    C2] Tainted: [L]=SOFTLOCKUP
[ 7998.120251][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 7998.120253][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 7998.120257][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 7998.120258][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 7998.120260][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 7998.120262][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 7998.120262][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 7998.120263][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 7998.120264][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 7998.120266][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 7998.120269][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7998.120270][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 7998.120271][    C2] PKRU: 55555554
[ 7998.120271][    C2] Call Trace:
[ 7998.120272][    C2]  <TASK>
[ 7998.120273][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 7998.120275][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 7998.120277][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 7998.120280][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 7998.120282][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 7998.120284][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7998.120286][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 7998.120288][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 7998.120291][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 7998.120293][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 7998.120295][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 7998.120298][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 7998.120300][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 7998.120302][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 7998.120304][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 7998.120306][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 7998.120308][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 7998.120310][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7998.120312][    C2]  ? release_sock (net/core/sock.c:3794)
[ 7998.120314][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 7998.120316][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 7998.120319][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7998.120321][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 7998.120323][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 7998.120325][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 7998.120327][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7998.120329][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 7998.120331][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 7998.120333][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 7998.120334][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7998.120337][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 7998.120338][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 7998.120340][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 7998.120342][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 7998.120344][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 7998.120346][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 7998.120347][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 7998.120349][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 7998.120351][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 7998.120353][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 7998.120355][    C2]  vfs_write (fs/read_write.c:686)
[ 7998.120357][    C2]  ksys_write (fs/read_write.c:739)
[ 7998.120359][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 7998.120361][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 7998.120363][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 7998.120365][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 7998.120367][    C2] RIP: 0033:0x7f814975fc5e
[ 7998.120369][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 7998.120370][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 7998.120371][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 7998.120372][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 7998.120373][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 7998.120374][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 7998.120375][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8024.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8024.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8024.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8024.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 8024.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8024.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8024.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8024.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8024.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8024.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8024.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8024.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8024.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8024.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8024.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8024.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8024.394796][    C2] PKRU: 55555554
[ 8024.394797][    C2] Call Trace:
[ 8024.394800][    C2]  <TASK>
[ 8024.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8024.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8024.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8024.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8024.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8024.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8024.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8024.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8024.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8024.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8024.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8024.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8024.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8024.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8024.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8024.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8024.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8024.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8024.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8024.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8024.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8024.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8024.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8024.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8024.394859][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8024.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8024.394862][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8024.394864][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8024.394866][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8024.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8024.394870][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8024.394872][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8024.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8024.394875][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8024.394877][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8024.394879][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8024.394880][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8024.394882][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8024.394884][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8024.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8024.394888][    C2]  vfs_write (fs/read_write.c:686)
[ 8024.394890][    C2]  ksys_write (fs/read_write.c:739)
[ 8024.394892][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8024.394894][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8024.394896][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8024.394898][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8024.394900][    C2] RIP: 0033:0x7f814975fc5e
[ 8024.394903][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8024.394904][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8024.394906][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8024.394907][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8024.394908][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8024.394909][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8024.394909][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8052.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8052.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8052.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8052.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 8052.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8052.394769][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8052.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8052.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8052.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8052.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8052.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8052.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8052.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8052.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8052.394784][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8052.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8052.394786][    C2] PKRU: 55555554
[ 8052.394787][    C2] Call Trace:
[ 8052.394790][    C2]  <TASK>
[ 8052.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8052.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8052.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8052.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8052.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8052.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8052.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8052.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8052.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8052.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8052.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8052.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8052.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8052.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8052.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8052.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8052.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8052.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8052.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8052.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8052.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8052.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8052.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8052.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8052.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8052.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8052.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8052.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8052.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8052.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8052.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8052.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8052.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8052.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8052.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8052.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8052.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8052.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8052.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8052.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8052.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 8052.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 8052.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8052.394881][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8052.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8052.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8052.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 8052.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8052.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8052.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8052.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8052.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8052.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8052.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8076.123626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8076.123908][    C2] rcu: 2-....: (7121519 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2798808
| [ 8076.124174][    C2] rcu: (t=7124351 jiffies g=521497 q=143123 ncpus=4)
| [ 8076.124310][    C2] Tainted: [L]=SOFTLOCKUP
[ 8076.124311][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8076.124313][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8076.124317][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8076.124318][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8076.124320][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8076.124322][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8076.124322][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8076.124323][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8076.124324][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8076.124326][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8076.124330][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8076.124331][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8076.124332][    C2] PKRU: 55555554
[ 8076.124333][    C2] Call Trace:
[ 8076.124334][    C2]  <TASK>
[ 8076.124334][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8076.124337][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8076.124339][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8076.124342][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8076.124344][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8076.124346][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8076.124348][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8076.124350][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8076.124353][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8076.124355][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8076.124357][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8076.124360][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8076.124362][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8076.124364][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8076.124366][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8076.124368][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8076.124371][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8076.124372][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8076.124375][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8076.124377][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8076.124378][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8076.124381][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8076.124383][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8076.124385][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8076.124387][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8076.124389][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8076.124390][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8076.124392][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8076.124394][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8076.124395][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8076.124398][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8076.124399][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8076.124401][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8076.124403][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8076.124404][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8076.124406][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8076.124407][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8076.124409][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8076.124411][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8076.124412][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8076.124415][    C2]  vfs_write (fs/read_write.c:686)
[ 8076.124417][    C2]  ksys_write (fs/read_write.c:739)
[ 8076.124419][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8076.124421][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8076.124423][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8076.124425][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8076.124426][    C2] RIP: 0033:0x7f814975fc5e
[ 8076.124428][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8076.124429][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8076.124431][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8076.124432][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8076.124432][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8076.124433][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8076.124434][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8095.057080][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8095.057222][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8095.057342][    C2] NMI backtrace for cpu 2
| [ 8095.057352][    C2] Tainted: [L]=SOFTLOCKUP
[ 8095.057352][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8095.057354][    C2] RIP: 0010:irq_entries_start (./arch/x86/include/asm/idtentry.h:551)
[ 8095.057358][    C2] Code: c9 45 31 c0 45 31 c9 45 31 d2 45 31 db 31 db 31 ed 45 31 e4 45 31 ed 45 31 f6 45 31 ff c3 90 66 66 2e 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 6a 20 e9 b5 11 00 00 cc cc cc cc cc f3 0f 1e fa 6a 21
All code
========
   0:	c9                   	leave
   1:	45 31 c0             	xor    %r8d,%r8d
   4:	45 31 c9             	xor    %r9d,%r9d
   7:	45 31 d2             	xor    %r10d,%r10d
   a:	45 31 db             	xor    %r11d,%r11d
   d:	31 db                	xor    %ebx,%ebx
   f:	31 ed                	xor    %ebp,%ebp
  11:	45 31 e4             	xor    %r12d,%r12d
  14:	45 31 ed             	xor    %r13d,%r13d
  17:	45 31 f6             	xor    %r14d,%r14d
  1a:	45 31 ff             	xor    %r15d,%r15d
  1d:	c3                   	ret
  1e:	90                   	nop
  1f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  26:	00 00 00 00 
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	6a 20                	push   $0x20
  30:	e9 b5 11 00 00       	jmp    0x11ea
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	f3 0f 1e fa          	endbr64
  3e:	6a 21                	push   $0x21

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	6a 20                	push   $0x20
   6:	e9 b5 11 00 00       	jmp    0x11c0
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	f3 0f 1e fa          	endbr64
  14:	6a 21                	push   $0x21
[ 8095.057359][    C2] RSP: 0018:ffa0000000617558 EFLAGS: 00000002
[ 8095.057362][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8095.057363][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8095.057364][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8095.057365][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8095.057366][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8095.057369][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8095.057372][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8095.057373][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8095.057374][    C2] PKRU: 55555554
[ 8095.057375][    C2] Call Trace:
[ 8095.057379][    C2]  <TASK>
[ 8095.057379][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8095.057382][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8095.057383][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8095.057388][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8095.057390][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8095.057393][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8095.057395][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8095.057398][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8095.057399][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8095.057402][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8095.057404][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8095.057407][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8095.057409][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8095.057411][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8095.057414][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8095.057416][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8095.057418][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8095.057420][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8095.057422][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8095.057425][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8095.057427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8095.057429][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8095.057431][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8095.057433][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8095.057436][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8095.057438][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8095.057440][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8095.057442][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8095.057443][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8095.057445][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8095.057447][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8095.057449][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8095.057450][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8095.057452][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8095.057454][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8095.057456][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8095.057458][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8095.057459][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8095.057461][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8095.057463][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8095.057465][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8095.057466][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8095.057468][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8095.057470][    C2]  vfs_write (fs/read_write.c:686)
[ 8095.057472][    C2]  ksys_write (fs/read_write.c:739)
[ 8095.057474][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8095.057476][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8095.057478][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8095.057480][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8095.057482][    C2] RIP: 0033:0x7f814975fc5e
[ 8095.057485][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8095.057486][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8095.057487][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8095.057488][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8095.057489][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8095.057490][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8095.057491][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8120.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8120.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8120.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8120.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 8120.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8120.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8120.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8120.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8120.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8120.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8120.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8120.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8120.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8120.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8120.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8120.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8120.394797][    C2] PKRU: 55555554
[ 8120.394798][    C2] Call Trace:
[ 8120.394801][    C2]  <TASK>
[ 8120.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8120.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8120.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8120.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8120.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8120.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8120.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8120.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8120.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8120.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8120.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8120.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8120.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8120.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8120.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8120.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8120.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8120.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8120.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8120.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8120.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8120.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8120.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8120.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8120.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8120.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8120.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8120.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8120.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8120.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8120.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8120.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8120.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8120.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8120.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8120.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8120.394878][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8120.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8120.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8120.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8120.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 8120.394888][    C2]  ksys_write (fs/read_write.c:739)
[ 8120.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8120.394891][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8120.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8120.394895][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8120.394897][    C2] RIP: 0033:0x7f814975fc5e
[ 8120.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8120.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8120.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8120.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8120.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8120.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8120.394906][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8148.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8148.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8148.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8148.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 8148.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8148.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8148.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8148.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8148.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8148.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8148.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8148.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8148.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8148.394781][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8148.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8148.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8148.394787][    C2] PKRU: 55555554
[ 8148.394787][    C2] Call Trace:
[ 8148.394790][    C2]  <TASK>
[ 8148.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8148.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8148.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8148.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8148.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8148.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8148.394807][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8148.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8148.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8148.394814][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8148.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8148.394819][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8148.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8148.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8148.394825][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8148.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8148.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8148.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8148.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8148.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8148.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8148.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8148.394843][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8148.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8148.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8148.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8148.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8148.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8148.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8148.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8148.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8148.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8148.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8148.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8148.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8148.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8148.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8148.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8148.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8148.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8148.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 8148.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 8148.394878][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8148.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8148.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8148.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8148.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 8148.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8148.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8148.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8148.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8148.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8148.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8148.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8154.127625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8154.127853][    C2] rcu: 2-....: (7199491 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2831470
| [ 8154.128172][    C2] rcu: (t=7202355 jiffies g=521497 q=144643 ncpus=4)
| [ 8154.128332][    C2] Tainted: [L]=SOFTLOCKUP
[ 8154.128333][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8154.128334][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8154.128337][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8154.128339][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8154.128341][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8154.128342][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8154.128343][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8154.128344][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8154.128345][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8154.128346][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8154.128349][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8154.128350][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8154.128351][    C2] PKRU: 55555554
[ 8154.128351][    C2] Call Trace:
[ 8154.128352][    C2]  <TASK>
[ 8154.128353][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8154.128356][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8154.128358][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8154.128360][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8154.128362][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8154.128364][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8154.128366][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8154.128369][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8154.128371][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8154.128373][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8154.128376][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8154.128378][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8154.128380][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8154.128382][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8154.128384][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8154.128386][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8154.128388][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8154.128390][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8154.128393][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8154.128395][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8154.128396][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8154.128399][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8154.128401][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8154.128403][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8154.128405][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8154.128407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8154.128408][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8154.128410][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8154.128411][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8154.128413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8154.128415][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8154.128417][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8154.128419][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8154.128420][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8154.128422][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8154.128424][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8154.128425][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8154.128427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8154.128429][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8154.128430][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8154.128433][    C2]  vfs_write (fs/read_write.c:686)
[ 8154.128435][    C2]  ksys_write (fs/read_write.c:739)
[ 8154.128437][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8154.128438][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8154.128441][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8154.128442][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8154.128444][    C2] RIP: 0033:0x7f814975fc5e
[ 8154.128446][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8154.128447][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8154.128448][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8154.128449][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8154.128449][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8154.128450][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8154.128451][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8180.394761][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8180.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8180.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8180.394772][    C2] Tainted: [L]=SOFTLOCKUP
[ 8180.394773][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8180.394775][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8180.394778][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8180.394780][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8180.394781][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8180.394783][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8180.394784][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8180.394784][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8180.394785][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8180.394788][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8180.394791][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8180.394792][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8180.394793][    C2] PKRU: 55555554
[ 8180.394794][    C2] Call Trace:
[ 8180.394797][    C2]  <TASK>
[ 8180.394800][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8180.394802][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8180.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8180.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8180.394810][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8180.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8180.394814][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8180.394817][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8180.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8180.394821][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8180.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8180.394826][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8180.394829][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8180.394830][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8180.394833][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8180.394835][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8180.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8180.394839][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8180.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8180.394844][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8180.394845][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8180.394849][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8180.394851][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8180.394853][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8180.394855][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8180.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8180.394857][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8180.394860][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8180.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8180.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8180.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8180.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8180.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8180.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8180.394871][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8180.394873][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8180.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8180.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8180.394878][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8180.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8180.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 8180.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 8180.394886][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8180.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8180.394890][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8180.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8180.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 8180.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8180.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8180.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8180.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8180.394902][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8180.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8180.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8193.361104][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8193.361228][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8193.361353][    C2] NMI backtrace for cpu 2
| [ 8193.361363][    C2] Tainted: [L]=SOFTLOCKUP
[ 8193.361364][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8193.361366][    C2] RIP: 0010:restore_regs_and_return_to_kernel (arch/x86/entry/entry_64.S:627)
[ 8193.361370][    C2] Code: 08 0f 01 f8 0f 1f 80 00 00 00 00 f6 44 24 08 03 75 29 0f 0b f6 84 24 88 00 00 00 03 74 02 0f 0b 41 5f 41 5e 41 5d 41 5c 5d 5b <41> 5b 41 5a 41 59 41 58 58 59 5a 5e 5f 48 83 c4 08 f6 44 24 20 04
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	01 f8                	add    %edi,%eax
   4:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
   b:	f6 44 24 08 03       	testb  $0x3,0x8(%rsp)
  10:	75 29                	jne    0x3b
  12:	0f 0b                	ud2
  14:	f6 84 24 88 00 00 00 	testb  $0x3,0x88(%rsp)
  1b:	03 
  1c:	74 02                	je     0x20
  1e:	0f 0b                	ud2
  20:	41 5f                	pop    %r15
  22:	41 5e                	pop    %r14
  24:	41 5d                	pop    %r13
  26:	41 5c                	pop    %r12
  28:	5d                   	pop    %rbp
  29:	5b                   	pop    %rbx
  2a:*	41 5b                	pop    %r11		<-- trapping instruction
  2c:	41 5a                	pop    %r10
  2e:	41 59                	pop    %r9
  30:	41 58                	pop    %r8
  32:	58                   	pop    %rax
  33:	59                   	pop    %rcx
  34:	5a                   	pop    %rdx
  35:	5e                   	pop    %rsi
  36:	5f                   	pop    %rdi
  37:	48 83 c4 08          	add    $0x8,%rsp
  3b:	f6 44 24 20 04       	testb  $0x4,0x20(%rsp)

Code starting with the faulting instruction
===========================================
   0:	41 5b                	pop    %r11
   2:	41 5a                	pop    %r10
   4:	41 59                	pop    %r9
   6:	41 58                	pop    %r8
   8:	58                   	pop    %rax
   9:	59                   	pop    %rcx
   a:	5a                   	pop    %rdx
   b:	5e                   	pop    %rsi
   c:	5f                   	pop    %rdi
   d:	48 83 c4 08          	add    $0x8,%rsp
  11:	f6 44 24 20 04       	testb  $0x4,0x20(%rsp)
[ 8193.361372][    C2] RSP: 0018:ffa0000000617508 EFLAGS: 00000046
[ 8193.361374][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000000
[ 8193.361376][    C2] RDX: 0000000000000003 RSI: ffffffffac85d040 RDI: ffffffffac51341b
[ 8193.361377][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffaa52a35e R09: 0000000000000000
[ 8193.361378][    C2] R10: 0000000000000002 R11: 1fe2200006a6666a R12: 0000000000000003
[ 8193.361379][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8193.361381][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8193.361384][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8193.361385][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8193.361386][    C2] PKRU: 55555554
[ 8193.361387][    C2] Call Trace:
[ 8193.361390][    C2]  <TASK>
[ 8193.361391][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8193.361394][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8193.361395][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8193.361396][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8193.361397][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8193.361398][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8193.361399][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8193.361400][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8193.361403][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8193.361406][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8193.361408][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8193.361410][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8193.361413][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8193.361415][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8193.361417][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8193.361419][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8193.361422][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8193.361425][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8193.361426][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8193.361429][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8193.361431][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8193.361434][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8193.361436][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8193.361438][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8193.361440][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8193.361443][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8193.361444][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8193.361447][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8193.361449][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8193.361451][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8193.361454][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8193.361456][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8193.361458][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8193.361460][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8193.361461][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8193.361463][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8193.361465][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8193.361467][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8193.361468][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8193.361471][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8193.361472][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8193.361474][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8193.361476][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8193.361478][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8193.361480][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8193.361481][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8193.361483][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8193.361485][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8193.361487][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8193.361489][    C2]  vfs_write (fs/read_write.c:686)
[ 8193.361491][    C2]  ksys_write (fs/read_write.c:739)
[ 8193.361493][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8193.361495][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8193.361497][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8193.361499][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8193.361501][    C2] RIP: 0033:0x7f814975fc5e
[ 8193.361504][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8193.361505][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8193.361506][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8193.361507][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8193.361508][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8193.361508][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8193.361509][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8220.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8220.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8220.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8220.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 8220.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8220.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8220.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8220.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8220.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8220.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8220.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8220.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8220.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8220.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8220.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8220.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8220.394796][    C2] PKRU: 55555554
[ 8220.394797][    C2] Call Trace:
[ 8220.394800][    C2]  <TASK>
[ 8220.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8220.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8220.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8220.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8220.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8220.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8220.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8220.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8220.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8220.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8220.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8220.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8220.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8220.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8220.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8220.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8220.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8220.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8220.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8220.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8220.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8220.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8220.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8220.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8220.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8220.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8220.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8220.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8220.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8220.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8220.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8220.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8220.394871][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8220.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8220.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8220.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8220.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8220.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8220.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8220.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8220.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 8220.394888][    C2]  ksys_write (fs/read_write.c:739)
[ 8220.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8220.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8220.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8220.394896][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8220.394898][    C2] RIP: 0033:0x7f814975fc5e
[ 8220.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8220.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8220.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8220.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8220.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8220.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8220.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8232.130625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8232.130833][    C2] rcu: 2-....: (7277462 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2860694
| [ 8232.131128][    C2] rcu: (t=7280358 jiffies g=521497 q=146201 ncpus=4)
| [ 8232.131265][    C2] Tainted: [L]=SOFTLOCKUP
[ 8232.131265][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8232.131267][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8232.131271][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8232.131272][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8232.131274][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8232.131276][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8232.131276][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8232.131277][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8232.131278][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8232.131280][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8232.131283][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8232.131284][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8232.131286][    C2] PKRU: 55555554
[ 8232.131286][    C2] Call Trace:
[ 8232.131287][    C2]  <TASK>
[ 8232.131288][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8232.131291][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8232.131293][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8232.131296][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8232.131298][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8232.131299][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8232.131302][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8232.131304][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8232.131307][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8232.131309][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8232.131311][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8232.131314][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8232.131316][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8232.131318][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8232.131320][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8232.131322][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8232.131325][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8232.131327][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8232.131329][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8232.131331][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8232.131333][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8232.131336][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8232.131338][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8232.131340][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8232.131342][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8232.131343][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8232.131345][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8232.131347][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8232.131348][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8232.131350][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8232.131352][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8232.131354][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8232.131356][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8232.131358][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8232.131359][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8232.131361][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8232.131363][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8232.131365][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8232.131366][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8232.131368][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8232.131370][    C2]  vfs_write (fs/read_write.c:686)
[ 8232.131372][    C2]  ksys_write (fs/read_write.c:739)
[ 8232.131374][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8232.131376][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8232.131378][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8232.131380][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8232.131381][    C2] RIP: 0033:0x7f814975fc5e
[ 8232.131384][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8232.131385][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8232.131386][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8232.131387][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8232.131388][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8232.131389][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8232.131389][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8256.394757][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8256.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8256.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8256.394767][    C2] Tainted: [L]=SOFTLOCKUP
[ 8256.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8256.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8256.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8256.394773][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8256.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8256.394776][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8256.394777][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8256.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8256.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8256.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8256.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8256.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8256.394787][    C2] PKRU: 55555554
[ 8256.394787][    C2] Call Trace:
[ 8256.394790][    C2]  <TASK>
[ 8256.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8256.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8256.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8256.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8256.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8256.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8256.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8256.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8256.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8256.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8256.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8256.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8256.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8256.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8256.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8256.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8256.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8256.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8256.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8256.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8256.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8256.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8256.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8256.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8256.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8256.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8256.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8256.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8256.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8256.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8256.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8256.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8256.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8256.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8256.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8256.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8256.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8256.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8256.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8256.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8256.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 8256.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 8256.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8256.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8256.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8256.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8256.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 8256.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8256.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8256.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8256.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8256.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8256.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8256.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8284.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8284.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8284.394761][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8284.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 8284.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8284.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8284.394772][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8284.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8284.394775][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8284.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8284.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8284.394778][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8284.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8284.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8284.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8284.394785][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8284.394786][    C2] PKRU: 55555554
[ 8284.394787][    C2] Call Trace:
[ 8284.394791][    C2]  <TASK>
[ 8284.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8284.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8284.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8284.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8284.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8284.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8284.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8284.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8284.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8284.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8284.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8284.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8284.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8284.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8284.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8284.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8284.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8284.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8284.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8284.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8284.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8284.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8284.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8284.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8284.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8284.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8284.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8284.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8284.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8284.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8284.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8284.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8284.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8284.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8284.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8284.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8284.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8284.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8284.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8284.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8284.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 8284.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 8284.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8284.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8284.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8284.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8284.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 8284.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8284.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8284.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8284.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8284.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8284.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8284.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8291.664019][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8291.664167][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8291.664331][    C2] NMI backtrace for cpu 2
| [ 8291.664341][    C2] Tainted: [L]=SOFTLOCKUP
[ 8291.664342][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8291.664343][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 8291.664348][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 8291.664350][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 8291.664352][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 8291.664353][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 8291.664354][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 8291.664355][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 8291.664356][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 8291.664359][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8291.664363][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8291.664364][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8291.664365][    C2] PKRU: 55555554
[ 8291.664365][    C2] Call Trace:
[ 8291.664369][    C2]  <IRQ>
[ 8291.664371][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 8291.664373][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 8291.664376][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 8291.664378][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 8291.664381][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 8291.664384][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 8291.664388][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 8291.664390][    C2]  </IRQ>
[ 8291.664391][    C2]  <TASK>
[ 8291.664391][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 8291.664393][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8291.664396][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8291.664397][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8291.664398][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8291.664399][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8291.664400][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8291.664400][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8291.664401][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8291.664402][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8291.664405][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8291.664407][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8291.664409][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8291.664411][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8291.664413][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8291.664415][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8291.664418][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8291.664420][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8291.664423][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8291.664425][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8291.664427][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8291.664430][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8291.664432][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8291.664434][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8291.664436][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8291.664438][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8291.664440][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8291.664442][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8291.664444][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8291.664446][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8291.664448][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8291.664451][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8291.664454][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8291.664456][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8291.664458][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8291.664459][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8291.664461][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8291.664463][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8291.664465][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8291.664466][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8291.664468][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8291.664470][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8291.664472][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8291.664474][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8291.664475][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8291.664477][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8291.664479][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8291.664480][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8291.664482][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8291.664484][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8291.664486][    C2]  vfs_write (fs/read_write.c:686)
[ 8291.664488][    C2]  ksys_write (fs/read_write.c:739)
[ 8291.664490][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8291.664492][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8291.664494][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8291.664496][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8291.664497][    C2] RIP: 0033:0x7f814975fc5e
[ 8291.664500][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8291.664501][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8291.664502][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8291.664503][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8291.664504][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8291.664505][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8291.664506][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8310.134626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8310.134915][    C2] rcu: 2-....: (7355432 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2890236
| [ 8310.135200][    C2] rcu: (t=7358362 jiffies g=521497 q=147792 ncpus=4)
| [ 8310.135338][    C2] Tainted: [L]=SOFTLOCKUP
[ 8310.135339][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8310.135341][    C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:141 mm/kasan/generic.c:172 mm/kasan/generic.c:191 mm/kasan/generic.c:200)
[ 8310.135346][    C2] Code: 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff 48 39 c7 0f 82 d1 00 00 00 4c 8d 4c 37 ff 48 89 f9 4c 8d 74 37 ff <48> b8 00 00 00 00 00 fc ff df 49 c1 e9 03 48 c1 e9 03 4e 8d 54 08
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	00 ff                	add    %bh,%bh
   8:	eb 0a                	jmp    0x14
   a:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  11:	80 ff ff 
  14:	48 39 c7             	cmp    %rax,%rdi
  17:	0f 82 d1 00 00 00    	jb     0xee
  1d:	4c 8d 4c 37 ff       	lea    -0x1(%rdi,%rsi,1),%r9
  22:	48 89 f9             	mov    %rdi,%rcx
  25:	4c 8d 74 37 ff       	lea    -0x1(%rdi,%rsi,1),%r14
  2a:*	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax		<-- trapping instruction
  31:	fc ff df 
  34:	49 c1 e9 03          	shr    $0x3,%r9
  38:	48 c1 e9 03          	shr    $0x3,%rcx
  3c:	4e                   	rex.WRX
  3d:	8d                   	.byte 0x8d
  3e:	54                   	push   %rsp
  3f:	08                   	.byte 0x8

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	49 c1 e9 03          	shr    $0x3,%r9
   e:	48 c1 e9 03          	shr    $0x3,%rcx
  12:	4e                   	rex.WRX
  13:	8d                   	.byte 0x8d
  14:	54                   	push   %rsp
  15:	08                   	.byte 0x8
[ 8310.135348][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000206
[ 8310.135351][    C2] RAX: ff00000000000000 RBX: ff11000012560b48 RCX: ff11000012560b48
[ 8310.135353][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8310.135354][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ff11000012560b4b
[ 8310.135354][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8310.135355][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 8310.135357][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8310.135361][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8310.135362][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8310.135363][    C2] PKRU: 55555554
[ 8310.135363][    C2] Call Trace:
[ 8310.135364][    C2]  <TASK>
[ 8310.135365][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8310.135368][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8310.135370][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8310.135372][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8310.135375][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8310.135377][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8310.135379][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8310.135382][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8310.135384][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8310.135387][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8310.135388][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8310.135391][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8310.135393][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8310.135396][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8310.135397][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8310.135399][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8310.135402][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8310.135404][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8310.135406][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8310.135408][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8310.135410][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8310.135412][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8310.135415][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8310.135417][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8310.135419][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8310.135421][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8310.135422][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8310.135424][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8310.135426][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8310.135427][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8310.135429][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8310.135431][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8310.135433][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8310.135434][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8310.135436][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8310.135438][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8310.135439][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8310.135441][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8310.135443][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8310.135444][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8310.135446][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8310.135448][    C2]  vfs_write (fs/read_write.c:686)
[ 8310.135450][    C2]  ksys_write (fs/read_write.c:739)
[ 8310.135452][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8310.135454][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8310.135457][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8310.135458][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8310.135460][    C2] RIP: 0033:0x7f814975fc5e
[ 8310.135462][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8310.135463][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8310.135465][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8310.135466][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8310.135467][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8310.135468][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8310.135469][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8336.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8336.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8336.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8336.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 8336.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8336.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8336.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8336.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8336.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8336.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8336.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8336.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8336.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8336.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8336.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8336.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8336.394790][    C2] PKRU: 55555554
[ 8336.394791][    C2] Call Trace:
[ 8336.394794][    C2]  <TASK>
[ 8336.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8336.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8336.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8336.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8336.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8336.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8336.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8336.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8336.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8336.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8336.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8336.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8336.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8336.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8336.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8336.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8336.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8336.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8336.394839][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8336.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8336.394843][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8336.394846][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8336.394848][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8336.394850][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8336.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8336.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8336.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8336.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8336.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8336.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8336.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8336.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8336.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8336.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8336.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8336.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8336.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8336.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8336.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8336.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8336.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 8336.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 8336.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8336.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8336.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8336.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8336.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 8336.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8336.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8336.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8336.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8336.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8336.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8336.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8364.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8364.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8364.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8364.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 8364.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8364.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8364.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8364.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8364.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8364.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8364.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8364.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8364.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8364.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8364.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8364.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8364.394789][    C2] PKRU: 55555554
[ 8364.394790][    C2] Call Trace:
[ 8364.394793][    C2]  <TASK>
[ 8364.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8364.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8364.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8364.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8364.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8364.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8364.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8364.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8364.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8364.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8364.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8364.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8364.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8364.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8364.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8364.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8364.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8364.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8364.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8364.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8364.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8364.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8364.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8364.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8364.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8364.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8364.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8364.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8364.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8364.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8364.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8364.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8364.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8364.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8364.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8364.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8364.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8364.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8364.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8364.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8364.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 8364.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 8364.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8364.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8364.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8364.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8364.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 8364.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8364.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8364.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8364.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8364.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8364.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8364.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8388.138625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8388.138977][    C2] rcu: 2-....: (7433412 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2929206
| [ 8388.139229][    C2] rcu: (t=7436366 jiffies g=521497 q=148932 ncpus=4)
| [ 8388.139429][    C2] Tainted: [L]=SOFTLOCKUP
[ 8388.139430][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8388.139431][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8388.139435][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8388.139437][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8388.139439][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8388.139441][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8388.139442][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8388.139443][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8388.139443][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8388.139446][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8388.139449][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8388.139450][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8388.139451][    C2] PKRU: 55555554
[ 8388.139452][    C2] Call Trace:
[ 8388.139453][    C2]  <TASK>
[ 8388.139454][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8388.139457][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8388.139459][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8388.139461][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8388.139464][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8388.139466][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8388.139468][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8388.139470][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8388.139473][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8388.139475][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8388.139478][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8388.139480][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8388.139483][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8388.139484][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8388.139487][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8388.139489][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8388.139491][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8388.139493][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8388.139495][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8388.139497][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8388.139499][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8388.139502][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8388.139504][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8388.139506][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8388.139508][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8388.139509][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8388.139511][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8388.139513][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8388.139514][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8388.139516][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8388.139522][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8388.139524][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8388.139526][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8388.139528][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8388.139530][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8388.139531][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8388.139533][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8388.139535][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8388.139536][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8388.139538][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8388.139541][    C2]  vfs_write (fs/read_write.c:686)
[ 8388.139543][    C2]  ksys_write (fs/read_write.c:739)
[ 8388.139545][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8388.139546][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8388.139549][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8388.139550][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8388.139552][    C2] RIP: 0033:0x7f814975fc5e
[ 8388.139554][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8388.139555][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8388.139557][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8388.139558][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8388.139559][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8388.139560][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8388.139560][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8389.967966][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8389.968115][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8389.968250][    C2] NMI backtrace for cpu 2
| [ 8389.968259][    C2] Tainted: [L]=SOFTLOCKUP
[ 8389.968259][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8389.968261][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 8389.968264][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 8389.968266][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 8389.968268][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 8389.968269][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 8389.968270][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 8389.968271][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 8389.968272][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 8389.968275][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8389.968278][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8389.968279][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8389.968280][    C2] PKRU: 55555554
[ 8389.968280][    C2] Call Trace:
[ 8389.968282][    C2]  <IRQ>
[ 8389.968284][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 8389.968286][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 8389.968288][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 8389.968290][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 8389.968293][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 8389.968295][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 8389.968297][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 8389.968299][    C2]  </IRQ>
[ 8389.968300][    C2]  <TASK>
[ 8389.968301][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 8389.968303][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8389.968305][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8389.968306][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8389.968307][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8389.968308][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8389.968309][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8389.968310][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8389.968310][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8389.968312][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8389.968314][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8389.968316][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8389.968318][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8389.968321][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8389.968323][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8389.968325][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8389.968327][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8389.968329][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8389.968332][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8389.968334][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8389.968337][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8389.968339][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8389.968341][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8389.968343][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8389.968345][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8389.968347][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8389.968349][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8389.968351][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8389.968353][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8389.968355][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8389.968357][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8389.968360][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8389.968362][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8389.968364][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8389.968366][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8389.968367][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8389.968369][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8389.968370][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8389.968372][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8389.968373][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8389.968376][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8389.968377][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8389.968379][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8389.968381][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8389.968382][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8389.968384][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8389.968386][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8389.968388][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8389.968389][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8389.968391][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8389.968393][    C2]  vfs_write (fs/read_write.c:686)
[ 8389.968395][    C2]  ksys_write (fs/read_write.c:739)
[ 8389.968397][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8389.968399][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8389.968402][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8389.968403][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8389.968404][    C2] RIP: 0033:0x7f814975fc5e
[ 8389.968408][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8389.968409][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8389.968410][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8389.968411][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8389.968412][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8389.968413][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8389.968413][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8416.394770][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8416.394772][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8416.394774][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8416.394781][    C2] Tainted: [L]=SOFTLOCKUP
[ 8416.394782][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8416.394783][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8416.394786][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8416.394788][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8416.394789][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8416.394790][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8416.394791][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8416.394792][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8416.394793][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8416.394795][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8416.394798][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8416.394800][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8416.394801][    C2] PKRU: 55555554
[ 8416.394801][    C2] Call Trace:
[ 8416.394805][    C2]  <TASK>
[ 8416.394808][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8416.394810][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8416.394812][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8416.394815][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8416.394817][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8416.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8416.394822][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8416.394824][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8416.394827][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8416.394829][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8416.394832][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8416.394834][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8416.394837][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8416.394838][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8416.394841][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8416.394843][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8416.394845][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8416.394847][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8416.394850][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8416.394852][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8416.394853][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8416.394857][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8416.394859][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8416.394861][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8416.394863][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8416.394865][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8416.394866][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8416.394868][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8416.394870][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8416.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8416.394874][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8416.394875][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8416.394877][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8416.394879][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8416.394881][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8416.394883][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8416.394885][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8416.394887][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8416.394888][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8416.394890][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8416.394893][    C2]  vfs_write (fs/read_write.c:686)
[ 8416.394895][    C2]  ksys_write (fs/read_write.c:739)
[ 8416.394897][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8416.394899][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8416.394901][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8416.394903][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8416.394905][    C2] RIP: 0033:0x7f814975fc5e
[ 8416.394908][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8416.394909][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8416.394910][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8416.394911][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8416.394912][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8416.394913][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8416.394914][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8444.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8444.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8444.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8444.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 8444.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8444.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8444.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8444.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8444.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8444.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8444.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8444.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8444.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8444.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8444.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8444.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8444.394789][    C2] PKRU: 55555554
[ 8444.394789][    C2] Call Trace:
[ 8444.394793][    C2]  <TASK>
[ 8444.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8444.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8444.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8444.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8444.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8444.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8444.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8444.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8444.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8444.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8444.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8444.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8444.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8444.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8444.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8444.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8444.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8444.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8444.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8444.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8444.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8444.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8444.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8444.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8444.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8444.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8444.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8444.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8444.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8444.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8444.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8444.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8444.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8444.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8444.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8444.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8444.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8444.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8444.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8444.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8444.394878][    C2]  vfs_write (fs/read_write.c:686)
[ 8444.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 8444.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8444.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8444.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8444.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8444.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 8444.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8444.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8444.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8444.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8444.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8444.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8444.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8466.141626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8466.141846][    C2] rcu: 2-....: (7511382 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2961507
| [ 8466.142160][    C2] rcu: (t=7514369 jiffies g=521497 q=150529 ncpus=4)
| [ 8466.142296][    C2] Tainted: [L]=SOFTLOCKUP
[ 8466.142297][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8466.142298][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8466.142302][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8466.142304][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8466.142306][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8466.142307][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8466.142308][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8466.142309][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8466.142310][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8466.142313][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8466.142316][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8466.142317][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8466.142318][    C2] PKRU: 55555554
[ 8466.142319][    C2] Call Trace:
[ 8466.142320][    C2]  <TASK>
[ 8466.142321][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8466.142323][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8466.142326][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8466.142328][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8466.142331][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8466.142332][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8466.142335][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8466.142337][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8466.142340][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8466.142342][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8466.142344][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8466.142347][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8466.142349][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8466.142350][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8466.142353][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8466.142355][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8466.142357][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8466.142359][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8466.142361][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8466.142363][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8466.142365][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8466.142368][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8466.142370][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8466.142372][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8466.142374][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8466.142375][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8466.142377][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8466.142379][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8466.142380][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8466.142382][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8466.142384][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8466.142386][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8466.142387][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8466.142389][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8466.142391][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8466.142392][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8466.142394][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8466.142396][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8466.142397][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8466.142399][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8466.142402][    C2]  vfs_write (fs/read_write.c:686)
[ 8466.142404][    C2]  ksys_write (fs/read_write.c:739)
[ 8466.142405][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8466.142407][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8466.142409][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8466.142411][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8466.142413][    C2] RIP: 0033:0x7f814975fc5e
[ 8466.142415][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8466.142416][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8466.142417][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8466.142418][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8466.142419][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8466.142420][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8466.142420][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8488.272063][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8488.272245][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8488.272382][    C2] NMI backtrace for cpu 2
| [ 8488.272392][    C2] Tainted: [L]=SOFTLOCKUP
[ 8488.272393][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8488.272395][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 8488.272399][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 8488.272401][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 8488.272403][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 8488.272405][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 8488.272406][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 8488.272406][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 8488.272407][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 8488.272410][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8488.272413][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8488.272414][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8488.272415][    C2] PKRU: 55555554
[ 8488.272415][    C2] Call Trace:
[ 8488.272419][    C2]  <IRQ>
[ 8488.272422][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 8488.272424][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 8488.272427][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 8488.272429][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 8488.272432][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 8488.272434][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 8488.272436][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 8488.272438][    C2]  </IRQ>
[ 8488.272439][    C2]  <TASK>
[ 8488.272440][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 8488.272442][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8488.272444][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8488.272445][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8488.272446][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8488.272447][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8488.272448][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8488.272449][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8488.272450][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8488.272451][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8488.272454][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8488.272456][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8488.272458][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8488.272460][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8488.272462][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8488.272464][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8488.272467][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8488.272469][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8488.272472][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8488.272473][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8488.272476][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8488.272478][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8488.272481][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8488.272482][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8488.272484][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8488.272486][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8488.272489][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8488.272491][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8488.272493][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8488.272495][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8488.272497][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8488.272500][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8488.272502][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8488.272504][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8488.272506][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8488.272508][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8488.272509][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8488.272511][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8488.272513][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8488.272514][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8488.272517][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8488.272519][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8488.272520][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8488.272522][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8488.272524][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8488.272526][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8488.272527][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8488.272529][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8488.272531][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8488.272533][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8488.272535][    C2]  vfs_write (fs/read_write.c:686)
[ 8488.272537][    C2]  ksys_write (fs/read_write.c:739)
[ 8488.272539][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8488.272541][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8488.272543][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8488.272545][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8488.272546][    C2] RIP: 0033:0x7f814975fc5e
[ 8488.272549][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8488.272550][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8488.272551][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8488.272552][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8488.272553][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8488.272554][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8488.272554][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8512.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8512.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8512.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8512.394779][    C2] Tainted: [L]=SOFTLOCKUP
[ 8512.394779][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8512.394781][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8512.394784][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8512.394785][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8512.394787][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8512.394788][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8512.394789][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8512.394790][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8512.394791][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8512.394793][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8512.394796][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8512.394797][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8512.394798][    C2] PKRU: 55555554
[ 8512.394799][    C2] Call Trace:
[ 8512.394802][    C2]  <TASK>
[ 8512.394806][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8512.394809][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8512.394811][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8512.394813][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8512.394816][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8512.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8512.394820][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8512.394823][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8512.394826][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8512.394828][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8512.394830][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8512.394833][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8512.394835][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8512.394837][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8512.394839][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8512.394841][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8512.394844][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8512.394846][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8512.394849][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8512.394851][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8512.394852][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8512.394856][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8512.394858][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8512.394860][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8512.394862][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8512.394864][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8512.394866][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8512.394867][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8512.394869][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8512.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8512.394873][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8512.394875][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8512.394877][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8512.394878][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8512.394880][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8512.394882][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8512.394884][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8512.394886][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8512.394888][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8512.394889][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8512.394892][    C2]  vfs_write (fs/read_write.c:686)
[ 8512.394894][    C2]  ksys_write (fs/read_write.c:739)
[ 8512.394896][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8512.394898][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8512.394900][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8512.394902][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8512.394904][    C2] RIP: 0033:0x7f814975fc5e
[ 8512.394907][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8512.394908][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8512.394910][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8512.394911][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8512.394912][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8512.394913][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8512.394914][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8540.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8540.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8540.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8540.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 8540.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8540.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8540.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8540.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8540.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8540.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8540.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8540.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8540.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8540.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8540.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8540.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8540.394788][    C2] PKRU: 55555554
[ 8540.394789][    C2] Call Trace:
[ 8540.394792][    C2]  <TASK>
[ 8540.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8540.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8540.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8540.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8540.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8540.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8540.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8540.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8540.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8540.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8540.394823][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8540.394826][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8540.394828][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8540.394830][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8540.394832][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8540.394834][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8540.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8540.394839][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8540.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8540.394843][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8540.394845][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8540.394848][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8540.394851][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8540.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8540.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8540.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8540.394857][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8540.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8540.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8540.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8540.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8540.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8540.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8540.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8540.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8540.394873][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8540.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8540.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8540.394878][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8540.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8540.394882][    C2]  vfs_write (fs/read_write.c:686)
[ 8540.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 8540.394886][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8540.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8540.394890][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8540.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8540.394894][    C2] RIP: 0033:0x7f814975fc5e
[ 8540.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8540.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8540.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8540.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8540.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8540.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8540.394902][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8544.145625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8544.145821][    C2] rcu: 2-....: (7589353 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=2990366
| [ 8544.146109][    C2] rcu: (t=7592373 jiffies g=521497 q=152120 ncpus=4)
| [ 8544.146254][    C2] Tainted: [L]=SOFTLOCKUP
[ 8544.146255][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8544.146256][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8544.146260][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8544.146262][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8544.146263][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8544.146265][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8544.146266][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8544.146267][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8544.146268][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8544.146270][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8544.146273][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8544.146274][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8544.146275][    C2] PKRU: 55555554
[ 8544.146275][    C2] Call Trace:
[ 8544.146276][    C2]  <TASK>
[ 8544.146277][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8544.146279][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8544.146282][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8544.146284][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8544.146286][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8544.146288][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8544.146290][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8544.146293][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8544.146296][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8544.146297][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8544.146300][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8544.146302][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8544.146305][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8544.146306][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8544.146308][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8544.146310][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8544.146313][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8544.146315][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8544.146317][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8544.146319][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8544.146321][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8544.146324][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8544.146326][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8544.146328][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8544.146330][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8544.146331][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8544.146332][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8544.146334][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8544.146336][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8544.146338][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8544.146340][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8544.146342][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8544.146343][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8544.146345][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8544.146346][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8544.146348][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8544.146350][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8544.146352][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8544.146353][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8544.146355][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8544.146358][    C2]  vfs_write (fs/read_write.c:686)
[ 8544.146360][    C2]  ksys_write (fs/read_write.c:739)
[ 8544.146361][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8544.146363][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8544.146366][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8544.146367][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8544.146369][    C2] RIP: 0033:0x7f814975fc5e
[ 8544.146371][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8544.146372][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8544.146373][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8544.146374][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8544.146375][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8544.146376][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8544.146376][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8568.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8568.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8568.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8568.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 8568.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8568.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8568.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8568.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8568.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8568.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8568.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8568.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8568.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8568.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8568.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8568.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8568.394791][    C2] PKRU: 55555554
[ 8568.394792][    C2] Call Trace:
[ 8568.394795][    C2]  <TASK>
[ 8568.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8568.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8568.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8568.394806][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8568.394808][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8568.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8568.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8568.394815][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8568.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8568.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8568.394822][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8568.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8568.394827][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8568.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8568.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8568.394833][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8568.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8568.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8568.394839][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8568.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8568.394843][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8568.394846][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8568.394848][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8568.394850][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8568.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8568.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8568.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8568.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8568.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8568.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8568.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8568.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8568.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8568.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8568.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8568.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8568.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8568.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8568.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8568.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8568.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 8568.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 8568.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8568.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8568.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8568.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8568.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 8568.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8568.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8568.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8568.394899][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8568.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8568.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8568.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8586.576974][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8586.577134][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8586.577287][    C2] NMI backtrace for cpu 2
| [ 8586.577297][    C2] Tainted: [L]=SOFTLOCKUP
[ 8586.577298][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8586.577299][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 8586.577303][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 8586.577305][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 8586.577307][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 8586.577308][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 8586.577309][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 8586.577310][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 8586.577311][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 8586.577314][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8586.577317][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8586.577318][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8586.577319][    C2] PKRU: 55555554
[ 8586.577320][    C2] Call Trace:
[ 8586.577323][    C2]  <IRQ>
[ 8586.577327][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 8586.577329][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 8586.577332][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 8586.577333][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 8586.577336][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 8586.577338][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 8586.577340][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 8586.577342][    C2]  </IRQ>
[ 8586.577343][    C2]  <TASK>
[ 8586.577344][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 8586.577346][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8586.577348][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8586.577349][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8586.577350][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8586.577351][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8586.577351][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8586.577352][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8586.577353][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8586.577354][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8586.577357][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8586.577359][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8586.577361][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8586.577363][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8586.577366][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8586.577367][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8586.577370][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8586.577372][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8586.577375][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8586.577377][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8586.577379][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8586.577382][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8586.577384][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8586.577386][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8586.577388][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8586.577390][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8586.577392][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8586.577394][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8586.577397][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8586.577398][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8586.577400][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8586.577403][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8586.577405][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8586.577407][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8586.577409][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8586.577411][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8586.577412][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8586.577414][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8586.577416][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8586.577417][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8586.577420][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8586.577421][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8586.577423][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8586.577425][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8586.577426][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8586.577428][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8586.577430][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8586.577432][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8586.577434][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8586.577435][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8586.577438][    C2]  vfs_write (fs/read_write.c:686)
[ 8586.577440][    C2]  ksys_write (fs/read_write.c:739)
[ 8586.577442][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8586.577443][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8586.577445][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8586.577447][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8586.577449][    C2] RIP: 0033:0x7f814975fc5e
[ 8586.577451][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8586.577452][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8586.577454][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8586.577455][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8586.577456][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8586.577457][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8586.577457][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8612.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8612.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8612.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8612.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 8612.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8612.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8612.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8612.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8612.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8612.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8612.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8612.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8612.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8612.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8612.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8612.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8612.394797][    C2] PKRU: 55555554
[ 8612.394798][    C2] Call Trace:
[ 8612.394801][    C2]  <TASK>
[ 8612.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8612.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8612.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8612.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8612.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8612.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8612.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8612.394821][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8612.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8612.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8612.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8612.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8612.394833][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8612.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8612.394837][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8612.394839][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8612.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8612.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8612.394846][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8612.394848][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8612.394850][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8612.394853][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8612.394855][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8612.394857][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8612.394860][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8612.394861][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8612.394863][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8612.394865][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8612.394867][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8612.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8612.394871][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8612.394873][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8612.394874][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8612.394876][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8612.394878][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8612.394880][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8612.394882][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8612.394884][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8612.394885][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8612.394887][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8612.394890][    C2]  vfs_write (fs/read_write.c:686)
[ 8612.394892][    C2]  ksys_write (fs/read_write.c:739)
[ 8612.394894][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8612.394896][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8612.394898][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8612.394900][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8612.394902][    C2] RIP: 0033:0x7f814975fc5e
[ 8612.394904][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8612.394906][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8612.394907][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8612.394908][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8612.394909][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8612.394910][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8612.394911][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8622.149625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8622.149918][    C2] rcu: 2-....: (7667324 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3020480
| [ 8622.150170][    C2] rcu: (t=7670377 jiffies g=521497 q=153711 ncpus=4)
| [ 8622.150305][    C2] Tainted: [L]=SOFTLOCKUP
[ 8622.150306][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8622.150308][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8622.150312][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8622.150313][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8622.150315][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8622.150316][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8622.150317][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8622.150318][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8622.150319][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8622.150321][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8622.150325][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8622.150326][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8622.150327][    C2] PKRU: 55555554
[ 8622.150327][    C2] Call Trace:
[ 8622.150328][    C2]  <TASK>
[ 8622.150329][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8622.150331][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8622.150334][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8622.150336][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8622.150338][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8622.150340][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8622.150343][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8622.150345][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8622.150348][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8622.150350][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8622.150352][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8622.150355][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8622.150357][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8622.150359][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8622.150361][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8622.150363][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8622.150365][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8622.150368][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8622.150370][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8622.150372][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8622.150374][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8622.150377][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8622.150379][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8622.150381][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8622.150383][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8622.150384][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8622.150386][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8622.150388][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8622.150389][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8622.150391][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8622.150393][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8622.150395][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8622.150397][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8622.150399][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8622.150400][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8622.150402][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8622.150404][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8622.150406][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8622.150407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8622.150409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8622.150411][    C2]  vfs_write (fs/read_write.c:686)
[ 8622.150414][    C2]  ksys_write (fs/read_write.c:739)
[ 8622.150415][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8622.150417][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8622.150419][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8622.150421][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8622.150423][    C2] RIP: 0033:0x7f814975fc5e
[ 8622.150425][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8622.150426][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8622.150427][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8622.150429][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8622.150430][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8622.150431][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8622.150432][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8648.394763][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8648.394765][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8648.394767][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8648.394774][    C2] Tainted: [L]=SOFTLOCKUP
[ 8648.394775][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8648.394777][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8648.394779][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8648.394781][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8648.394783][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8648.394784][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8648.394785][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8648.394785][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8648.394786][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8648.394789][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8648.394792][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8648.394793][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8648.394794][    C2] PKRU: 55555554
[ 8648.394795][    C2] Call Trace:
[ 8648.394798][    C2]  <TASK>
[ 8648.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8648.394804][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8648.394806][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8648.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8648.394811][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8648.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8648.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8648.394818][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8648.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8648.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8648.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8648.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8648.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8648.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8648.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8648.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8648.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8648.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8648.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8648.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8648.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8648.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8648.394853][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8648.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8648.394857][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8648.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8648.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8648.394862][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8648.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8648.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8648.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8648.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8648.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8648.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8648.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8648.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8648.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8648.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8648.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8648.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8648.394887][    C2]  vfs_write (fs/read_write.c:686)
[ 8648.394889][    C2]  ksys_write (fs/read_write.c:739)
[ 8648.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8648.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8648.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8648.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8648.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 8648.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8648.394903][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8648.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8648.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8648.394906][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8648.394907][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8648.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8676.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8676.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8676.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8676.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 8676.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8676.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8676.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8676.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8676.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8676.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8676.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8676.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8676.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8676.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8676.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8676.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8676.394788][    C2] PKRU: 55555554
[ 8676.394789][    C2] Call Trace:
[ 8676.394792][    C2]  <TASK>
[ 8676.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8676.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8676.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8676.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8676.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8676.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8676.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8676.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8676.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8676.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8676.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8676.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8676.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8676.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8676.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8676.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8676.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8676.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8676.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8676.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8676.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8676.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8676.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8676.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8676.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8676.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8676.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8676.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8676.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8676.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8676.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8676.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8676.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8676.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8676.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8676.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8676.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8676.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8676.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8676.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8676.394878][    C2]  vfs_write (fs/read_write.c:686)
[ 8676.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 8676.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8676.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8676.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8676.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8676.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 8676.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8676.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8676.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8676.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8676.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8676.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8676.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8684.880016][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8684.880151][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8684.880294][    C2] NMI backtrace for cpu 2
| [ 8684.880303][    C2] Tainted: [L]=SOFTLOCKUP
[ 8684.880304][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8684.880306][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 8684.880311][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 8684.880313][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 8684.880315][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 8684.880316][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 8684.880317][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 8684.880318][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 8684.880319][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 8684.880322][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8684.880326][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8684.880327][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8684.880328][    C2] PKRU: 55555554
[ 8684.880328][    C2] Call Trace:
[ 8684.880332][    C2]  <IRQ>
[ 8684.880333][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 8684.880338][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 8684.880341][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 8684.880343][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 8684.880345][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 8684.880347][    C2]  </IRQ>
[ 8684.880348][    C2]  <TASK>
[ 8684.880349][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 8684.880351][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8684.880353][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8684.880354][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8684.880355][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8684.880356][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8684.880357][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8684.880357][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8684.880358][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8684.880360][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8684.880362][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8684.880364][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8684.880366][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8684.880369][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8684.880371][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8684.880372][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8684.880375][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8684.880377][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8684.880380][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8684.880382][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8684.880384][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8684.880387][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8684.880389][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8684.880391][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8684.880393][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8684.880395][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8684.880398][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8684.880399][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8684.880402][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8684.880404][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8684.880406][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8684.880409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8684.880411][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8684.880413][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8684.880415][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8684.880417][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8684.880418][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8684.880420][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8684.880422][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8684.880423][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8684.880426][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8684.880427][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8684.880429][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8684.880431][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8684.880432][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8684.880434][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8684.880436][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8684.880438][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8684.880440][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8684.880441][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8684.880444][    C2]  vfs_write (fs/read_write.c:686)
[ 8684.880446][    C2]  ksys_write (fs/read_write.c:739)
[ 8684.880448][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8684.880449][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8684.880452][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8684.880453][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8684.880455][    C2] RIP: 0033:0x7f814975fc5e
[ 8684.880457][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8684.880459][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8684.880460][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8684.880461][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8684.880462][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8684.880463][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8684.880464][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8700.153626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8700.153869][    C2] rcu: 2-....: (7745295 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3056546
| [ 8700.154198][    C2] rcu: (t=7748381 jiffies g=521497 q=155297 ncpus=4)
| [ 8700.154336][    C2] Tainted: [L]=SOFTLOCKUP
[ 8700.154337][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8700.154339][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8700.154343][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8700.154345][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8700.154347][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8700.154349][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8700.154350][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8700.154351][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8700.154351][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8700.154354][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8700.154357][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8700.154358][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8700.154359][    C2] PKRU: 55555554
[ 8700.154360][    C2] Call Trace:
[ 8700.154360][    C2]  <TASK>
[ 8700.154361][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8700.154364][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8700.154367][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8700.154369][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8700.154371][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8700.154373][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8700.154376][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8700.154378][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8700.154381][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8700.154383][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8700.154385][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8700.154388][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8700.154390][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8700.154392][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8700.154394][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8700.154396][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8700.154398][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8700.154400][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8700.154403][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8700.154405][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8700.154406][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8700.154409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8700.154412][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8700.154413][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8700.154415][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8700.154417][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8700.154418][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8700.154420][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8700.154422][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8700.154423][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8700.154426][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8700.154427][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8700.154429][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8700.154431][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8700.154433][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8700.154434][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8700.154436][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8700.154438][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8700.154440][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8700.154441][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8700.154444][    C2]  vfs_write (fs/read_write.c:686)
[ 8700.154446][    C2]  ksys_write (fs/read_write.c:739)
[ 8700.154448][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8700.154450][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8700.154452][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8700.154454][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8700.154456][    C2] RIP: 0033:0x7f814975fc5e
[ 8700.154458][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8700.154459][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8700.154460][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8700.154461][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8700.154462][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8700.154463][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8700.154464][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8724.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8724.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8724.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8724.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 8724.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8724.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8724.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8724.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8724.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8724.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8724.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8724.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8724.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8724.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8724.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8724.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8724.394790][    C2] PKRU: 55555554
[ 8724.394790][    C2] Call Trace:
[ 8724.394793][    C2]  <TASK>
[ 8724.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8724.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8724.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8724.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8724.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8724.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8724.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8724.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8724.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8724.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8724.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8724.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8724.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8724.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8724.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8724.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8724.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8724.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8724.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8724.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8724.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8724.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8724.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8724.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8724.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8724.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8724.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8724.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8724.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8724.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8724.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8724.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8724.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8724.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8724.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8724.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8724.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8724.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8724.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8724.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8724.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 8724.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 8724.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8724.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8724.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8724.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8724.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 8724.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8724.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8724.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8724.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8724.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8724.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8724.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8752.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8752.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8752.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8752.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 8752.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8752.394771][    C2] RIP: 0010:kasan_check_range (./include/linux/kasan.h:65 mm/kasan/generic.c:141 mm/kasan/generic.c:172 mm/kasan/generic.c:191 mm/kasan/generic.c:200)
[ 8752.394774][    C2] Code: 00 00 00 00 00 00 00 ff eb 0a 48 b8 00 00 00 00 00 80 ff ff 48 39 c7 0f 82 d1 00 00 00 4c 8d 4c 37 ff 48 89 f9 4c 8d 74 37 ff <48> b8 00 00 00 00 00 fc ff df 49 c1 e9 03 48 c1 e9 03 4e 8d 54 08
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	00 ff                	add    %bh,%bh
   8:	eb 0a                	jmp    0x14
   a:	48 b8 00 00 00 00 00 	movabs $0xffff800000000000,%rax
  11:	80 ff ff 
  14:	48 39 c7             	cmp    %rax,%rdi
  17:	0f 82 d1 00 00 00    	jb     0xee
  1d:	4c 8d 4c 37 ff       	lea    -0x1(%rdi,%rsi,1),%r9
  22:	48 89 f9             	mov    %rdi,%rcx
  25:	4c 8d 74 37 ff       	lea    -0x1(%rdi,%rsi,1),%r14
  2a:*	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax		<-- trapping instruction
  31:	fc ff df 
  34:	49 c1 e9 03          	shr    $0x3,%r9
  38:	48 c1 e9 03          	shr    $0x3,%rcx
  3c:	4e                   	rex.WRX
  3d:	8d                   	.byte 0x8d
  3e:	54                   	push   %rsp
  3f:	08                   	.byte 0x8

Code starting with the faulting instruction
===========================================
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	49 c1 e9 03          	shr    $0x3,%r9
   e:	48 c1 e9 03          	shr    $0x3,%rcx
  12:	4e                   	rex.WRX
  13:	8d                   	.byte 0x8d
  14:	54                   	push   %rsp
  15:	08                   	.byte 0x8
[ 8752.394775][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000206
[ 8752.394777][    C2] RAX: ff00000000000000 RBX: ff11000012560b48 RCX: ff11000012560b48
[ 8752.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8752.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ff11000012560b4b
[ 8752.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8752.394781][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 8752.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8752.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8752.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8752.394788][    C2] PKRU: 55555554
[ 8752.394789][    C2] Call Trace:
[ 8752.394792][    C2]  <TASK>
[ 8752.394796][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8752.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8752.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8752.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8752.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8752.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8752.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8752.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8752.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8752.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8752.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8752.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8752.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8752.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8752.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8752.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8752.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8752.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8752.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8752.394839][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8752.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8752.394843][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8752.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8752.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8752.394851][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8752.394853][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8752.394855][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8752.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8752.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8752.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8752.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8752.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8752.394866][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8752.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8752.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8752.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8752.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8752.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8752.394877][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8752.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8752.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8752.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 8752.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 8752.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8752.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8752.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8752.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8752.394896][    C2] RIP: 0033:0x7f814975fc5e
[ 8752.394898][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8752.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8752.394901][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8752.394902][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8752.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8752.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8752.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8778.157625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8778.157955][    C2] rcu: 2-....: (7823275 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3084065
| [ 8778.158171][    C2] rcu: (t=7826385 jiffies g=521497 q=156437 ncpus=4)
| [ 8778.158361][    C2] Tainted: [L]=SOFTLOCKUP
[ 8778.158362][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8778.158363][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8778.158367][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8778.158369][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8778.158371][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8778.158372][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8778.158373][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8778.158374][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8778.158375][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8778.158377][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8778.158380][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8778.158381][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8778.158382][    C2] PKRU: 55555554
[ 8778.158383][    C2] Call Trace:
[ 8778.158384][    C2]  <TASK>
[ 8778.158385][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8778.158387][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8778.158389][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8778.158392][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8778.158394][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8778.158396][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8778.158399][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8778.158401][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8778.158404][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8778.158406][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8778.158408][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8778.158411][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8778.158413][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8778.158414][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8778.158417][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8778.158419][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8778.158422][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8778.158423][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8778.158426][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8778.158428][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8778.158429][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8778.158432][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8778.158435][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8778.158436][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8778.158438][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8778.158440][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8778.158441][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8778.158443][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8778.158445][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8778.158446][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8778.158448][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8778.158450][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8778.158452][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8778.158454][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8778.158455][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8778.158457][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8778.158459][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8778.158461][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8778.158462][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8778.158464][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8778.158467][    C2]  vfs_write (fs/read_write.c:686)
[ 8778.158469][    C2]  ksys_write (fs/read_write.c:739)
[ 8778.158471][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8778.158472][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8778.158475][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8778.158476][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8778.158478][    C2] RIP: 0033:0x7f814975fc5e
[ 8778.158480][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8778.158481][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8778.158482][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8778.158483][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8778.158484][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8778.158485][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8778.158486][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8783.185066][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8783.185191][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8783.185301][    C2] NMI backtrace for cpu 2
| [ 8783.185310][    C2] Tainted: [L]=SOFTLOCKUP
[ 8783.185311][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8783.185312][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 8783.185316][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 8783.185318][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 8783.185320][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 8783.185322][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 8783.185323][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 8783.185324][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 8783.185324][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 8783.185327][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8783.185330][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8783.185331][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8783.185332][    C2] PKRU: 55555554
[ 8783.185333][    C2] Call Trace:
[ 8783.185336][    C2]  <IRQ>
[ 8783.185338][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 8783.185340][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 8783.185343][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 8783.185344][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 8783.185347][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 8783.185349][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 8783.185351][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 8783.185354][    C2]  </IRQ>
[ 8783.185354][    C2]  <TASK>
[ 8783.185355][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 8783.185357][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8783.185359][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8783.185360][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8783.185361][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8783.185362][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8783.185363][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8783.185364][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8783.185365][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8783.185366][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8783.185369][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8783.185371][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8783.185373][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8783.185375][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8783.185377][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8783.185379][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8783.185381][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8783.185384][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8783.185387][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8783.185388][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8783.185391][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8783.185394][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8783.185396][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8783.185398][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8783.185400][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8783.185402][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8783.185404][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8783.185406][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8783.185408][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8783.185410][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8783.185412][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8783.185415][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8783.185417][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8783.185419][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8783.185421][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8783.185423][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8783.185424][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8783.185426][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8783.185428][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8783.185429][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8783.185432][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8783.185433][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8783.185435][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8783.185437][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8783.185438][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8783.185440][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8783.185442][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8783.185444][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8783.185445][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8783.185447][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8783.185450][    C2]  vfs_write (fs/read_write.c:686)
[ 8783.185452][    C2]  ksys_write (fs/read_write.c:739)
[ 8783.185453][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8783.185455][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8783.185458][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8783.185459][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8783.185461][    C2] RIP: 0033:0x7f814975fc5e
[ 8783.185463][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8783.185464][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8783.185466][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8783.185467][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8783.185468][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8783.185469][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8783.185469][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8808.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8808.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8808.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8808.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 8808.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8808.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8808.394782][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8808.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8808.394785][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8808.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8808.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8808.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8808.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8808.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8808.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8808.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8808.394797][    C2] PKRU: 55555554
[ 8808.394798][    C2] Call Trace:
[ 8808.394801][    C2]  <TASK>
[ 8808.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8808.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8808.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8808.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8808.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8808.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8808.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8808.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8808.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8808.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8808.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8808.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8808.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8808.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8808.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8808.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8808.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8808.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8808.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8808.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8808.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8808.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8808.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8808.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8808.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8808.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8808.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8808.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8808.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8808.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8808.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8808.394871][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8808.394873][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8808.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8808.394876][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8808.394878][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8808.394880][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8808.394882][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8808.394883][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8808.394885][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8808.394888][    C2]  vfs_write (fs/read_write.c:686)
[ 8808.394890][    C2]  ksys_write (fs/read_write.c:739)
[ 8808.394891][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8808.394893][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8808.394895][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8808.394897][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8808.394899][    C2] RIP: 0033:0x7f814975fc5e
[ 8808.394902][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8808.394903][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8808.394904][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8808.394905][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8808.394906][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8808.394907][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8808.394908][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8836.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8836.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8836.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8836.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 8836.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8836.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8836.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8836.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8836.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8836.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8836.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8836.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8836.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8836.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8836.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8836.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8836.394788][    C2] PKRU: 55555554
[ 8836.394789][    C2] Call Trace:
[ 8836.394792][    C2]  <TASK>
[ 8836.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8836.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8836.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8836.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8836.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8836.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8836.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8836.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8836.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8836.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8836.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8836.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8836.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8836.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8836.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8836.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8836.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8836.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8836.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8836.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8836.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8836.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8836.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8836.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8836.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8836.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8836.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8836.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8836.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8836.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8836.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8836.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8836.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8836.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8836.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8836.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8836.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8836.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8836.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8836.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8836.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 8836.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 8836.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8836.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8836.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8836.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8836.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 8836.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8836.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8836.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8836.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8836.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8836.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8836.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8856.161626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8856.161875][    C2] rcu: 2-....: (7901245 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3111650
| [ 8856.162207][    C2] rcu: (t=7904389 jiffies g=521497 q=158028 ncpus=4)
| [ 8856.162367][    C2] Tainted: [L]=SOFTLOCKUP
[ 8856.162368][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8856.162369][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8856.162373][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8856.162375][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8856.162377][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8856.162378][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8856.162379][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8856.162380][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8856.162381][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8856.162383][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8856.162386][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8856.162387][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8856.162388][    C2] PKRU: 55555554
[ 8856.162389][    C2] Call Trace:
[ 8856.162390][    C2]  <TASK>
[ 8856.162391][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8856.162393][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8856.162395][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8856.162398][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8856.162400][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8856.162402][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8856.162404][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8856.162406][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8856.162409][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8856.162411][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8856.162413][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8856.162416][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8856.162418][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8856.162420][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8856.162422][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8856.162424][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8856.162426][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8856.162428][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8856.162431][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8856.162433][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8856.162434][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8856.162437][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8856.162440][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8856.162441][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8856.162443][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8856.162445][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8856.162446][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8856.162448][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8856.162450][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8856.162451][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8856.162454][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8856.162456][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8856.162457][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8856.162459][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8856.162461][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8856.162463][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8856.162465][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8856.162466][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8856.162468][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8856.162470][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8856.162472][    C2]  vfs_write (fs/read_write.c:686)
[ 8856.162474][    C2]  ksys_write (fs/read_write.c:739)
[ 8856.162476][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8856.162478][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8856.162480][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8856.162482][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8856.162484][    C2] RIP: 0033:0x7f814975fc5e
[ 8856.162486][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8856.162487][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8856.162489][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8856.162490][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8856.162491][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8856.162492][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8856.162493][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8880.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8880.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8880.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8880.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 8880.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8880.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8880.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8880.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8880.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8880.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8880.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8880.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8880.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8880.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8880.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8880.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8880.394788][    C2] PKRU: 55555554
[ 8880.394789][    C2] Call Trace:
[ 8880.394793][    C2]  <TASK>
[ 8880.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8880.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8880.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8880.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8880.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8880.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8880.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8880.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8880.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8880.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8880.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8880.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8880.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8880.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8880.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8880.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8880.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8880.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8880.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8880.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8880.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8880.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8880.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8880.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8880.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8880.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8880.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8880.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8880.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8880.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8880.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8880.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8880.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8880.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8880.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8880.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8880.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8880.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8880.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8880.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8880.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 8880.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 8880.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8880.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8880.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8880.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8880.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 8880.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8880.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8880.394898][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8880.394899][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8880.394900][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8880.394901][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8880.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8881.487989][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8881.488105][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8881.488228][    C2] NMI backtrace for cpu 2
| [ 8881.488236][    C2] Tainted: [L]=SOFTLOCKUP
[ 8881.488237][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8881.488238][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 8881.488241][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 8881.488243][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 8881.488245][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 8881.488247][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 8881.488248][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 8881.488248][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 8881.488249][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 8881.488252][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8881.488255][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8881.488256][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8881.488257][    C2] PKRU: 55555554
[ 8881.488258][    C2] Call Trace:
[ 8881.488259][    C2]  <IRQ>
[ 8881.488260][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 8881.488264][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 8881.488267][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 8881.488269][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 8881.488271][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 8881.488273][    C2]  </IRQ>
[ 8881.488274][    C2]  <TASK>
[ 8881.488274][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 8881.488276][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8881.488278][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8881.488280][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8881.488281][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8881.488282][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8881.488282][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8881.488283][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8881.488284][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8881.488285][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8881.488288][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8881.488290][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8881.488292][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8881.488295][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8881.488297][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8881.488299][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8881.488301][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8881.488304][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8881.488307][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8881.488309][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8881.488311][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8881.488314][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8881.488316][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8881.488318][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8881.488320][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8881.488322][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8881.488325][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8881.488327][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8881.488329][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8881.488331][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8881.488333][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8881.488336][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8881.488338][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8881.488340][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8881.488342][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8881.488344][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8881.488345][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8881.488347][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8881.488349][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8881.488351][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8881.488353][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8881.488355][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8881.488357][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8881.488359][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8881.488360][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8881.488362][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8881.488364][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8881.488366][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8881.488367][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8881.488369][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8881.488372][    C2]  vfs_write (fs/read_write.c:686)
[ 8881.488374][    C2]  ksys_write (fs/read_write.c:739)
[ 8881.488376][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8881.488377][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8881.488380][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8881.488381][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8881.488383][    C2] RIP: 0033:0x7f814975fc5e
[ 8881.488384][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8881.488386][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8881.488387][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8881.488388][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8881.488389][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8881.488389][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8881.488390][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8908.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8908.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8908.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8908.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 8908.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8908.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8908.394782][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 8908.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 8908.394785][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8908.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8908.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8908.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8908.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8908.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8908.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8908.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8908.394797][    C2] PKRU: 55555554
[ 8908.394797][    C2] Call Trace:
[ 8908.394801][    C2]  <TASK>
[ 8908.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8908.394807][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8908.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8908.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8908.394814][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8908.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8908.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8908.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8908.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8908.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8908.394828][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8908.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8908.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8908.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8908.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8908.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8908.394841][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8908.394843][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8908.394845][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8908.394847][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8908.394849][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8908.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8908.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8908.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8908.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8908.394860][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8908.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8908.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8908.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8908.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8908.394869][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8908.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8908.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8908.394874][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8908.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8908.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8908.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8908.394881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8908.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8908.394884][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8908.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 8908.394888][    C2]  ksys_write (fs/read_write.c:739)
[ 8908.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8908.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8908.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8908.394896][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8908.394898][    C2] RIP: 0033:0x7f814975fc5e
[ 8908.394901][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8908.394902][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8908.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8908.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8908.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8908.394906][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8908.394907][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8934.165627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 8934.165894][    C2] rcu: 2-....: (7979215 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3148132
| [ 8934.166117][    C2] rcu: (t=7982393 jiffies g=521497 q=159611 ncpus=4)
| [ 8934.166306][    C2] Tainted: [L]=SOFTLOCKUP
[ 8934.166307][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8934.166309][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 8934.166313][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 8934.166314][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 8934.166317][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 8934.166318][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8934.166319][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8934.166320][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8934.166321][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8934.166323][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8934.166326][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8934.166327][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8934.166328][    C2] PKRU: 55555554
[ 8934.166329][    C2] Call Trace:
[ 8934.166330][    C2]  <TASK>
[ 8934.166331][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8934.166334][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8934.166336][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8934.166338][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8934.166341][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8934.166342][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8934.166345][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8934.166347][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8934.166350][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8934.166352][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8934.166354][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8934.166357][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8934.166359][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8934.166361][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8934.166363][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8934.166365][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8934.166367][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8934.166369][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8934.166371][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8934.166373][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8934.166375][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8934.166378][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8934.166380][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8934.166382][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8934.166384][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8934.166385][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8934.166387][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8934.166389][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8934.166390][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8934.166392][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8934.166394][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8934.166396][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8934.166397][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8934.166399][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8934.166401][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8934.166402][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8934.166404][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8934.166406][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8934.166407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8934.166409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8934.166411][    C2]  vfs_write (fs/read_write.c:686)
[ 8934.166413][    C2]  ksys_write (fs/read_write.c:739)
[ 8934.166415][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8934.166417][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8934.166419][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8934.166421][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8934.166422][    C2] RIP: 0033:0x7f814975fc5e
[ 8934.166424][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8934.166425][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8934.166427][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8934.166428][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8934.166429][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8934.166429][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8934.166430][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8960.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 8960.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 8960.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 8960.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 8960.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8960.394773][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:182 (discriminator 1) mm/kasan/generic.c:200 (discriminator 1))
[ 8960.394776][    C2] Code: 00 00 00 f3 0f 1e fa 48 89 f2 be f8 00 00 00 e9 9f a1 ab 01 0f 1f 40 00 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 48 85 f6 <0f> 84 9a 01 00 00 48 89 f8 41 57 49 89 c8 48 01 f0 41 56 53 0f 82
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 f3                	add    %dh,%bl
   4:	0f 1e fa             	nop    %edx
   7:	48 89 f2             	mov    %rsi,%rdx
   a:	be f8 00 00 00       	mov    $0xf8,%esi
   f:	e9 9f a1 ab 01       	jmp    0x1aba1b3
  14:	0f 1f 40 00          	nopl   0x0(%rax)
  18:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  1f:	00 00 00 00 
  23:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  27:	48 85 f6             	test   %rsi,%rsi
  2a:*	0f 84 9a 01 00 00    	je     0x1ca		<-- trapping instruction
  30:	48 89 f8             	mov    %rdi,%rax
  33:	41 57                	push   %r15
  35:	49 89 c8             	mov    %rcx,%r8
  38:	48 01 f0             	add    %rsi,%rax
  3b:	41 56                	push   %r14
  3d:	53                   	push   %rbx
  3e:	0f                   	.byte 0xf
  3f:	82                   	.byte 0x82

Code starting with the faulting instruction
===========================================
   0:	0f 84 9a 01 00 00    	je     0x1a0
   6:	48 89 f8             	mov    %rdi,%rax
   9:	41 57                	push   %r15
   b:	49 89 c8             	mov    %rcx,%r8
   e:	48 01 f0             	add    %rsi,%rax
  11:	41 56                	push   %r14
  13:	53                   	push   %rbx
  14:	0f                   	.byte 0xf
  15:	82                   	.byte 0x82
[ 8960.394778][    C2] RSP: 0018:ffa0000000617578 EFLAGS: 00000202
[ 8960.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: ffffffffac5390f1
[ 8960.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8960.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8960.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8960.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 8960.394786][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8960.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8960.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8960.394791][    C2] PKRU: 55555554
[ 8960.394792][    C2] Call Trace:
[ 8960.394795][    C2]  <TASK>
[ 8960.394796][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8960.394801][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8960.394803][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8960.394805][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8960.394808][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8960.394810][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8960.394812][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8960.394814][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8960.394816][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8960.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8960.394821][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8960.394824][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8960.394826][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8960.394828][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8960.394830][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8960.394832][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8960.394834][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8960.394837][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8960.394839][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8960.394841][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8960.394843][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8960.394845][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8960.394848][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8960.394850][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8960.394852][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8960.394854][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8960.394856][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8960.394857][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8960.394859][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8960.394861][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8960.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8960.394865][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8960.394866][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8960.394868][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8960.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8960.394871][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8960.394873][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8960.394875][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8960.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8960.394878][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8960.394880][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8960.394882][    C2]  vfs_write (fs/read_write.c:686)
[ 8960.394884][    C2]  ksys_write (fs/read_write.c:739)
[ 8960.394886][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8960.394888][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8960.394890][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8960.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8960.394894][    C2] RIP: 0033:0x7f814975fc5e
[ 8960.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8960.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8960.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8960.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8960.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8960.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8960.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 8979.793067][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 8979.793186][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 8979.793307][    C2] NMI backtrace for cpu 2
| [ 8979.793317][    C2] Tainted: [L]=SOFTLOCKUP
[ 8979.793317][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8979.793319][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 8979.793323][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 8979.793324][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 8979.793326][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 8979.793328][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 8979.793329][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 8979.793329][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 8979.793330][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 8979.793333][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 8979.793337][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8979.793338][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 8979.793339][    C2] PKRU: 55555554
[ 8979.793339][    C2] Call Trace:
[ 8979.793343][    C2]  <IRQ>
[ 8979.793346][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 8979.793348][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 8979.793351][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 8979.793352][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 8979.793355][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 8979.793357][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 8979.793359][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 8979.793361][    C2]  </IRQ>
[ 8979.793362][    C2]  <TASK>
[ 8979.793363][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 8979.793365][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:114 mm/kasan/generic.c:140 mm/kasan/generic.c:172 mm/kasan/generic.c:191 mm/kasan/generic.c:200)
[ 8979.793367][    C2] Code: 4c 37 ff 48 89 f9 4c 8d 74 37 ff 48 b8 00 00 00 00 00 fc ff df 49 c1 e9 03 48 c1 e9 03 4e 8d 54 08 01 49 8d 1c 01 4c 8d 0c 01 <4c> 89 d1 4c 29 c9 4c 89 c8 48 83 f9 10 0f 8e f4 00 00 00 45 89 cb
All code
========
   0:	4c 37                	rex.WR (bad)
   2:	ff 48 89             	decl   -0x77(%rax)
   5:	f9                   	stc
   6:	4c 8d 74 37 ff       	lea    -0x1(%rdi,%rsi,1),%r14
   b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  12:	fc ff df 
  15:	49 c1 e9 03          	shr    $0x3,%r9
  19:	48 c1 e9 03          	shr    $0x3,%rcx
  1d:	4e 8d 54 08 01       	lea    0x1(%rax,%r9,1),%r10
  22:	49 8d 1c 01          	lea    (%r9,%rax,1),%rbx
  26:	4c 8d 0c 01          	lea    (%rcx,%rax,1),%r9
  2a:*	4c 89 d1             	mov    %r10,%rcx		<-- trapping instruction
  2d:	4c 29 c9             	sub    %r9,%rcx
  30:	4c 89 c8             	mov    %r9,%rax
  33:	48 83 f9 10          	cmp    $0x10,%rcx
  37:	0f 8e f4 00 00 00    	jle    0x131
  3d:	45 89 cb             	mov    %r9d,%r11d

Code starting with the faulting instruction
===========================================
   0:	4c 89 d1             	mov    %r10,%rcx
   3:	4c 29 c9             	sub    %r9,%rcx
   6:	4c 89 c8             	mov    %r9,%rax
   9:	48 83 f9 10          	cmp    $0x10,%rcx
   d:	0f 8e f4 00 00 00    	jle    0x107
  13:	45 89 cb             	mov    %r9d,%r11d
[ 8979.793368][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000216
[ 8979.793369][    C2] RAX: dffffc0000000000 RBX: ffe21c00024ac169 RCX: 1fe22000024ac169
[ 8979.793370][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 8979.793371][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 8979.793372][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 8979.793373][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 8979.793374][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8979.793377][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 8979.793379][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 8979.793381][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 8979.793383][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 8979.793386][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 8979.793388][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 8979.793390][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8979.793392][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 8979.793395][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 8979.793397][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 8979.793399][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 8979.793401][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 8979.793404][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 8979.793406][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 8979.793408][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 8979.793410][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 8979.793412][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 8979.793415][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 8979.793416][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8979.793418][    C2]  ? release_sock (net/core/sock.c:3794)
[ 8979.793421][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 8979.793422][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 8979.793425][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8979.793427][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 8979.793429][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 8979.793431][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 8979.793433][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8979.793434][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 8979.793436][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 8979.793438][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 8979.793439][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8979.793442][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 8979.793443][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 8979.793445][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 8979.793447][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 8979.793448][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 8979.793450][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 8979.793451][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 8979.793454][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 8979.793455][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 8979.793457][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 8979.793459][    C2]  vfs_write (fs/read_write.c:686)
[ 8979.793461][    C2]  ksys_write (fs/read_write.c:739)
[ 8979.793463][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 8979.793465][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 8979.793467][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 8979.793469][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 8979.793470][    C2] RIP: 0033:0x7f814975fc5e
[ 8979.793472][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 8979.793474][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 8979.793475][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 8979.793476][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 8979.793477][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 8979.793477][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 8979.793478][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9004.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9004.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9004.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9004.394778][    C2] Tainted: [L]=SOFTLOCKUP
[ 9004.394782][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9004.394783][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9004.394786][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9004.394788][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9004.394789][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9004.394790][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9004.394791][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9004.394792][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9004.394793][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9004.394795][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9004.394798][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9004.394799][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9004.394800][    C2] PKRU: 55555554
[ 9004.394801][    C2] Call Trace:
[ 9004.394804][    C2]  <TASK>
[ 9004.394808][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9004.394810][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9004.394812][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9004.394815][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9004.394817][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9004.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9004.394822][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9004.394824][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9004.394827][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9004.394829][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9004.394831][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9004.394834][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9004.394836][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9004.394838][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9004.394840][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9004.394842][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9004.394845][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9004.394846][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9004.394848][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9004.394850][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9004.394852][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9004.394855][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9004.394858][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9004.394859][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9004.394861][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9004.394863][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9004.394864][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9004.394866][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9004.394868][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9004.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9004.394872][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9004.394874][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9004.394875][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9004.394877][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9004.394879][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9004.394880][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9004.394882][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9004.394884][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9004.394886][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9004.394887][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9004.394890][    C2]  vfs_write (fs/read_write.c:686)
[ 9004.394892][    C2]  ksys_write (fs/read_write.c:739)
[ 9004.394893][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9004.394895][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9004.394897][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9004.394899][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9004.394901][    C2] RIP: 0033:0x7f814975fc5e
[ 9004.394904][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9004.394905][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9004.394906][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9004.394907][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9004.394908][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9004.394909][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9004.394910][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9012.168625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9012.168929][    C2] rcu: 2-....: (8057185 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3184488
| [ 9012.169162][    C2] rcu: (t=8060396 jiffies g=521497 q=161208 ncpus=4)
| [ 9012.169297][    C2] Tainted: [L]=SOFTLOCKUP
[ 9012.169298][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9012.169299][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9012.169303][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9012.169304][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9012.169307][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9012.169308][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9012.169309][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9012.169310][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9012.169310][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9012.169313][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9012.169315][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9012.169317][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9012.169317][    C2] PKRU: 55555554
[ 9012.169318][    C2] Call Trace:
[ 9012.169319][    C2]  <TASK>
[ 9012.169320][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9012.169323][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9012.169325][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9012.169327][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9012.169329][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9012.169331][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9012.169334][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9012.169336][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9012.169339][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9012.169341][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9012.169343][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9012.169346][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9012.169348][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9012.169349][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9012.169352][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9012.169354][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9012.169356][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9012.169358][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9012.169360][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9012.169362][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9012.169364][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9012.169367][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9012.169369][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9012.169371][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9012.169373][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9012.169374][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9012.169376][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9012.169377][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9012.169379][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9012.169380][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9012.169383][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9012.169384][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9012.169386][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9012.169388][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9012.169389][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9012.169391][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9012.169393][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9012.169394][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9012.169396][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9012.169397][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9012.169400][    C2]  vfs_write (fs/read_write.c:686)
[ 9012.169402][    C2]  ksys_write (fs/read_write.c:739)
[ 9012.169404][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9012.169405][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9012.169408][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9012.169409][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9012.169411][    C2] RIP: 0033:0x7f814975fc5e
[ 9012.169413][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9012.169414][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9012.169415][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9012.169416][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9012.169417][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9012.169417][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9012.169418][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9036.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9036.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9036.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9036.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 9036.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9036.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9036.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9036.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9036.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9036.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9036.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9036.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9036.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9036.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9036.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9036.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9036.394788][    C2] PKRU: 55555554
[ 9036.394789][    C2] Call Trace:
[ 9036.394792][    C2]  <TASK>
[ 9036.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9036.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9036.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9036.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9036.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9036.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9036.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9036.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9036.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9036.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9036.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9036.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9036.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9036.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9036.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9036.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9036.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9036.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9036.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9036.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9036.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9036.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9036.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9036.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9036.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9036.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9036.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9036.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9036.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9036.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9036.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9036.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9036.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9036.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9036.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9036.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9036.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9036.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9036.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9036.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9036.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 9036.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 9036.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9036.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9036.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9036.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9036.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 9036.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9036.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9036.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9036.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9036.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9036.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9036.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9064.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9064.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9064.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9064.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 9064.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9064.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9064.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9064.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9064.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9064.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9064.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9064.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9064.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9064.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9064.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9064.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9064.394789][    C2] PKRU: 55555554
[ 9064.394790][    C2] Call Trace:
[ 9064.394792][    C2]  <TASK>
[ 9064.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9064.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9064.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9064.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9064.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9064.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9064.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9064.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9064.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9064.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9064.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9064.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9064.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9064.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9064.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9064.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9064.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9064.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9064.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9064.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9064.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9064.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9064.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9064.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9064.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9064.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9064.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9064.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9064.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9064.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9064.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9064.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9064.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9064.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9064.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9064.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9064.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9064.394870][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9064.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9064.394873][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9064.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 9064.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 9064.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9064.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9064.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9064.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9064.394887][    C2] RIP: 0033:0x7f814975fc5e
[ 9064.394890][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9064.394891][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9064.394892][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9064.394893][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9064.394894][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9064.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9064.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9078.096975][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9078.097090][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9078.097231][    C2] NMI backtrace for cpu 2
| [ 9078.097241][    C2] Tainted: [L]=SOFTLOCKUP
[ 9078.097242][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9078.097244][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 9078.097248][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 9078.097250][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 9078.097252][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 9078.097253][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 9078.097254][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 9078.097255][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 9078.097256][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 9078.097259][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9078.097262][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9078.097263][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9078.097264][    C2] PKRU: 55555554
[ 9078.097265][    C2] Call Trace:
[ 9078.097268][    C2]  <IRQ>
[ 9078.097272][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 9078.097274][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 9078.097277][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 9078.097278][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 9078.097281][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9078.097283][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9078.097285][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9078.097287][    C2]  </IRQ>
[ 9078.097288][    C2]  <TASK>
[ 9078.097289][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9078.097291][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9078.097293][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9078.097294][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9078.097295][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9078.097296][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9078.097297][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9078.097297][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9078.097298][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9078.097300][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9078.097302][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9078.097304][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9078.097306][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9078.097308][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9078.097311][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9078.097312][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9078.097315][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9078.097317][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9078.097320][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9078.097322][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9078.097324][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9078.097327][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9078.097329][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9078.097331][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9078.097333][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9078.097335][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9078.097337][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9078.097339][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9078.097341][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9078.097343][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9078.097345][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9078.097348][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9078.097350][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9078.097352][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9078.097354][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9078.097355][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9078.097357][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9078.097359][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9078.097360][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9078.097362][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9078.097364][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9078.097366][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9078.097367][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9078.097369][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9078.097371][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9078.097372][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9078.097374][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9078.097376][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9078.097377][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9078.097379][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9078.097381][    C2]  vfs_write (fs/read_write.c:686)
[ 9078.097383][    C2]  ksys_write (fs/read_write.c:739)
[ 9078.097385][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9078.097387][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9078.097389][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9078.097391][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9078.097392][    C2] RIP: 0033:0x7f814975fc5e
[ 9078.097395][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9078.097396][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9078.097398][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9078.097398][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9078.097399][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9078.097400][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9078.097401][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9090.172627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9090.172878][    C2] rcu: 2-....: (8135156 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3218903
| [ 9090.173119][    C2] rcu: (t=8138400 jiffies g=521497 q=162799 ncpus=4)
| [ 9090.173325][    C2] Tainted: [L]=SOFTLOCKUP
[ 9090.173326][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9090.173328][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:201)
[ 9090.173332][    C2] Code: 48 39 c1 74 20 80 38 00 74 f2 b9 01 00 00 00 48 85 c0 74 2e 48 39 c3 75 19 45 89 f2 41 83 e2 07 44 3a 13 7d 0d b9 01 00 00 00 <5b> 41 5e 89 c8 41 5f c3 4c 89 c1 0f b6 d2 e8 df e9 ff ff 83 f0 01
All code
========
   0:	48 39 c1             	cmp    %rax,%rcx
   3:	74 20                	je     0x25
   5:	80 38 00             	cmpb   $0x0,(%rax)
   8:	74 f2                	je     0xfffffffffffffffc
   a:	b9 01 00 00 00       	mov    $0x1,%ecx
   f:	48 85 c0             	test   %rax,%rax
  12:	74 2e                	je     0x42
  14:	48 39 c3             	cmp    %rax,%rbx
  17:	75 19                	jne    0x32
  19:	45 89 f2             	mov    %r14d,%r10d
  1c:	41 83 e2 07          	and    $0x7,%r10d
  20:	44 3a 13             	cmp    (%rbx),%r10b
  23:	7d 0d                	jge    0x32
  25:	b9 01 00 00 00       	mov    $0x1,%ecx
  2a:*	5b                   	pop    %rbx		<-- trapping instruction
  2b:	41 5e                	pop    %r14
  2d:	89 c8                	mov    %ecx,%eax
  2f:	41 5f                	pop    %r15
  31:	c3                   	ret
  32:	4c 89 c1             	mov    %r8,%rcx
  35:	0f b6 d2             	movzbl %dl,%edx
  38:	e8 df e9 ff ff       	call   0xffffffffffffea1c
  3d:	83 f0 01             	xor    $0x1,%eax

Code starting with the faulting instruction
===========================================
   0:	5b                   	pop    %rbx
   1:	41 5e                	pop    %r14
   3:	89 c8                	mov    %ecx,%eax
   5:	41 5f                	pop    %r15
   7:	c3                   	ret
   8:	4c 89 c1             	mov    %r8,%rcx
   b:	0f b6 d2             	movzbl %dl,%edx
   e:	e8 df e9 ff ff       	call   0xffffffffffffe9f2
  13:	83 f0 01             	xor    $0x1,%eax
[ 9090.173334][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000246
[ 9090.173337][    C2] RAX: ffe21c00024ac16a RBX: ffe21c00024ac169 RCX: 0000000000000001
[ 9090.173338][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9090.173339][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9090.173339][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9090.173340][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 9090.173342][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9090.173346][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9090.173347][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9090.173347][    C2] PKRU: 55555554
[ 9090.173348][    C2] Call Trace:
[ 9090.173349][    C2]  <TASK>
[ 9090.173350][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9090.173353][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9090.173355][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9090.173357][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9090.173360][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9090.173362][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9090.173364][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9090.173366][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9090.173368][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9090.173371][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9090.173373][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9090.173375][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9090.173378][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9090.173380][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9090.173382][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9090.173384][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9090.173386][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9090.173388][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9090.173390][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9090.173392][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9090.173394][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9090.173396][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9090.173399][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9090.173401][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9090.173403][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9090.173405][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9090.173406][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9090.173408][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9090.173410][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9090.173411][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9090.173413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9090.173415][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9090.173417][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9090.173418][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9090.173420][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9090.173422][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9090.173423][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9090.173425][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9090.173427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9090.173428][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9090.173430][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9090.173433][    C2]  vfs_write (fs/read_write.c:686)
[ 9090.173435][    C2]  ksys_write (fs/read_write.c:739)
[ 9090.173436][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9090.173438][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9090.173440][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9090.173442][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9090.173443][    C2] RIP: 0033:0x7f814975fc5e
[ 9090.173446][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9090.173447][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9090.173448][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9090.173449][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9090.173450][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9090.173450][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9090.173451][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9116.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9116.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9116.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9116.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 9116.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9116.394774][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9116.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9116.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9116.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9116.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9116.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9116.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9116.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9116.394786][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9116.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9116.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9116.394791][    C2] PKRU: 55555554
[ 9116.394792][    C2] Call Trace:
[ 9116.394795][    C2]  <TASK>
[ 9116.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9116.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9116.394804][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9116.394806][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9116.394808][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9116.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9116.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9116.394815][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9116.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9116.394820][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9116.394822][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9116.394825][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9116.394827][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9116.394829][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9116.394831][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9116.394833][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9116.394836][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9116.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9116.394840][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9116.394842][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9116.394843][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9116.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9116.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9116.394851][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9116.394853][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9116.394854][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9116.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9116.394858][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9116.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9116.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9116.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9116.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9116.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9116.394869][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9116.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9116.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9116.394874][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9116.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9116.394877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9116.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9116.394881][    C2]  vfs_write (fs/read_write.c:686)
[ 9116.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 9116.394885][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9116.394887][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9116.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9116.394891][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9116.394893][    C2] RIP: 0033:0x7f814975fc5e
[ 9116.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9116.394897][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9116.394898][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9116.394899][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9116.394900][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9116.394901][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9116.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9144.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9144.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9144.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9144.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 9144.394772][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9144.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9144.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9144.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9144.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9144.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9144.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9144.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9144.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9144.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9144.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9144.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9144.394790][    C2] PKRU: 55555554
[ 9144.394791][    C2] Call Trace:
[ 9144.394794][    C2]  <TASK>
[ 9144.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9144.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9144.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9144.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9144.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9144.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9144.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9144.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9144.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9144.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9144.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9144.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9144.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9144.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9144.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9144.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9144.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9144.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9144.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9144.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9144.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9144.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9144.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9144.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9144.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9144.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9144.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9144.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9144.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9144.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9144.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9144.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9144.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9144.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9144.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9144.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9144.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9144.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9144.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9144.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9144.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 9144.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 9144.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9144.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9144.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9144.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9144.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 9144.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9144.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9144.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9144.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9144.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9144.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9144.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9168.176626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9168.176888][    C2] rcu: 2-....: (8213135 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3251942
| [ 9168.177146][    C2] rcu: (t=8216404 jiffies g=521497 q=163939 ncpus=4)
| [ 9168.177282][    C2] Tainted: [L]=SOFTLOCKUP
[ 9168.177283][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9168.177285][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9168.177289][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9168.177291][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9168.177293][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9168.177294][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9168.177295][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9168.177296][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9168.177297][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9168.177299][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9168.177302][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9168.177303][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9168.177304][    C2] PKRU: 55555554
[ 9168.177305][    C2] Call Trace:
[ 9168.177306][    C2]  <TASK>
[ 9168.177306][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9168.177309][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9168.177311][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9168.177314][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9168.177316][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9168.177318][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9168.177320][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9168.177322][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9168.177325][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9168.177327][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9168.177329][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9168.177332][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9168.177334][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9168.177336][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9168.177338][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9168.177340][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9168.177342][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9168.177344][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9168.177346][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9168.177348][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9168.177350][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9168.177353][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9168.177355][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9168.177357][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9168.177358][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9168.177360][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9168.177361][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9168.177363][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9168.177365][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9168.177366][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9168.177369][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9168.177371][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9168.177372][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9168.177374][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9168.177375][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9168.177377][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9168.177379][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9168.177380][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9168.177382][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9168.177384][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9168.177386][    C2]  vfs_write (fs/read_write.c:686)
[ 9168.177388][    C2]  ksys_write (fs/read_write.c:739)
[ 9168.177390][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9168.177392][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9168.177394][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9168.177395][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9168.177397][    C2] RIP: 0033:0x7f814975fc5e
[ 9168.177399][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9168.177400][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9168.177402][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9168.177402][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9168.177403][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9168.177404][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9168.177405][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9176.401013][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9176.401130][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9176.401285][    C2] NMI backtrace for cpu 2
| [ 9176.401295][    C2] Tainted: [L]=SOFTLOCKUP
[ 9176.401295][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9176.401297][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 9176.401301][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 9176.401303][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 9176.401305][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 9176.401307][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 9176.401307][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 9176.401308][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 9176.401309][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 9176.401312][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9176.401315][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9176.401316][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9176.401317][    C2] PKRU: 55555554
[ 9176.401317][    C2] Call Trace:
[ 9176.401320][    C2]  <IRQ>
[ 9176.401321][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 9176.401326][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 9176.401329][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9176.401331][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9176.401333][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9176.401335][    C2]  </IRQ>
[ 9176.401336][    C2]  <TASK>
[ 9176.401337][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9176.401338][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9176.401341][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9176.401342][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9176.401343][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9176.401343][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9176.401344][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9176.401345][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9176.401346][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9176.401347][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9176.401350][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9176.401352][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9176.401354][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9176.401356][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9176.401358][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9176.401360][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9176.401362][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9176.401365][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9176.401368][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9176.401369][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9176.401372][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9176.401374][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9176.401377][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9176.401378][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9176.401380][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9176.401382][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9176.401385][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9176.401387][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9176.401389][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9176.401391][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9176.401393][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9176.401396][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9176.401398][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9176.401400][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9176.401402][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9176.401403][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9176.401405][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9176.401407][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9176.401408][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9176.401410][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9176.401412][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9176.401414][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9176.401415][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9176.401417][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9176.401418][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9176.401420][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9176.401422][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9176.401423][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9176.401425][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9176.401426][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9176.401429][    C2]  vfs_write (fs/read_write.c:686)
[ 9176.401431][    C2]  ksys_write (fs/read_write.c:739)
[ 9176.401433][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9176.401434][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9176.401437][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9176.401438][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9176.401440][    C2] RIP: 0033:0x7f814975fc5e
[ 9176.401442][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9176.401443][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9176.401445][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9176.401446][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9176.401447][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9176.401447][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9176.401448][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9204.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9204.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9204.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9204.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 9204.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9204.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9204.394783][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9204.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9204.394786][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9204.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9204.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9204.394789][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9204.394790][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9204.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9204.394796][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9204.394797][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9204.394798][    C2] PKRU: 55555554
[ 9204.394799][    C2] Call Trace:
[ 9204.394802][    C2]  <TASK>
[ 9204.394805][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9204.394808][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9204.394810][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9204.394813][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9204.394815][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9204.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9204.394819][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9204.394822][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9204.394825][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9204.394827][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9204.394829][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9204.394832][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9204.394834][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9204.394836][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9204.394838][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9204.394840][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9204.394843][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9204.394845][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9204.394847][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9204.394849][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9204.394851][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9204.394854][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9204.394856][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9204.394858][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9204.394860][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9204.394862][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9204.394863][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9204.394865][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9204.394867][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9204.394869][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9204.394871][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9204.394873][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9204.394874][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9204.394876][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9204.394878][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9204.394880][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9204.394881][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9204.394883][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9204.394885][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9204.394886][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9204.394889][    C2]  vfs_write (fs/read_write.c:686)
[ 9204.394891][    C2]  ksys_write (fs/read_write.c:739)
[ 9204.394893][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9204.394895][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9204.394897][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9204.394899][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9204.394901][    C2] RIP: 0033:0x7f814975fc5e
[ 9204.394904][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9204.394905][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9204.394906][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9204.394907][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9204.394908][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9204.394909][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9204.394910][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9232.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9232.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9232.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9232.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 9232.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9232.394772][    C2] RIP: 0010:kasan_check_range (mm/kasan/generic.c:97 mm/kasan/generic.c:115 mm/kasan/generic.c:140 mm/kasan/generic.c:172 mm/kasan/generic.c:191 mm/kasan/generic.c:200)
[ 9232.394775][    C2] Code: 4c 89 d1 4c 89 d8 4c 29 d9 e9 19 ff ff ff 48 85 c9 74 8c 4c 01 c9 eb 1b 0f 1f 00 66 66 2e 0f 1f 84 00 00 00 00 00 48 83 c0 01 <48> 39 c8 0f 84 6c ff ff ff 80 38 00 74 ee e9 47 ff ff ff b8 01 00
All code
========
   0:	4c 89 d1             	mov    %r10,%rcx
   3:	4c 89 d8             	mov    %r11,%rax
   6:	4c 29 d9             	sub    %r11,%rcx
   9:	e9 19 ff ff ff       	jmp    0xffffffffffffff27
   e:	48 85 c9             	test   %rcx,%rcx
  11:	74 8c                	je     0xffffffffffffff9f
  13:	4c 01 c9             	add    %r9,%rcx
  16:	eb 1b                	jmp    0x33
  18:	0f 1f 00             	nopl   (%rax)
  1b:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  22:	00 00 00 00 
  26:	48 83 c0 01          	add    $0x1,%rax
  2a:*	48 39 c8             	cmp    %rcx,%rax		<-- trapping instruction
  2d:	0f 84 6c ff ff ff    	je     0xffffffffffffff9f
  33:	80 38 00             	cmpb   $0x0,(%rax)
  36:	74 ee                	je     0x26
  38:	e9 47 ff ff ff       	jmp    0xffffffffffffff84
  3d:	b8                   	.byte 0xb8
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 39 c8             	cmp    %rcx,%rax
   3:	0f 84 6c ff ff ff    	je     0xffffffffffffff75
   9:	80 38 00             	cmpb   $0x0,(%rax)
   c:	74 ee                	je     0xfffffffffffffffc
   e:	e9 47 ff ff ff       	jmp    0xffffffffffffff5a
  13:	b8                   	.byte 0xb8
  14:	01 00                	add    %eax,(%rax)
[ 9232.394776][    C2] RSP: 0018:ffa0000000617560 EFLAGS: 00000286
[ 9232.394778][    C2] RAX: ffe21c00024ac16a RBX: ffe21c00024ac169 RCX: ffe21c00024ac16a
[ 9232.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9232.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9232.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9232.394782][    C2] R13: ffe21c00024ac169 R14: ff11000012560b4b R15: ff11000012560b48
[ 9232.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9232.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9232.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9232.394789][    C2] PKRU: 55555554
[ 9232.394790][    C2] Call Trace:
[ 9232.394793][    C2]  <TASK>
[ 9232.394797][    C2]  queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9232.394799][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9232.394802][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9232.394804][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9232.394807][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9232.394809][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9232.394811][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9232.394813][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9232.394816][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9232.394819][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9232.394820][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9232.394823][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9232.394825][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9232.394827][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9232.394829][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9232.394831][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9232.394833][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9232.394836][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9232.394838][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9232.394840][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9232.394842][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9232.394844][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9232.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9232.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9232.394851][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9232.394853][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9232.394854][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9232.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9232.394858][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9232.394860][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9232.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9232.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9232.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9232.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9232.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9232.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9232.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9232.394874][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9232.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9232.394877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9232.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9232.394881][    C2]  vfs_write (fs/read_write.c:686)
[ 9232.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 9232.394885][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9232.394887][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9232.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9232.394891][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9232.394893][    C2] RIP: 0033:0x7f814975fc5e
[ 9232.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9232.394897][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9232.394898][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9232.394899][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9232.394900][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9232.394901][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9232.394902][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9246.180626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9246.180857][    C2] rcu: 2-....: (8291106 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3289832
| [ 9246.181149][    C2] rcu: (t=8294408 jiffies g=521497 q=165528 ncpus=4)
| [ 9246.181286][    C2] Tainted: [L]=SOFTLOCKUP
[ 9246.181287][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9246.181288][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9246.181292][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9246.181294][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9246.181296][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9246.181297][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9246.181298][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9246.181299][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9246.181300][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9246.181302][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9246.181305][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9246.181306][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9246.181307][    C2] PKRU: 55555554
[ 9246.181308][    C2] Call Trace:
[ 9246.181308][    C2]  <TASK>
[ 9246.181309][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9246.181312][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9246.181314][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9246.181316][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9246.181319][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9246.181320][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9246.181323][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9246.181325][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9246.181328][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9246.181330][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9246.181332][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9246.181335][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9246.181337][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9246.181338][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9246.181340][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9246.181343][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9246.181345][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9246.181347][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9246.181349][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9246.181351][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9246.181353][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9246.181356][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9246.181358][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9246.181360][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9246.181362][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9246.181363][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9246.181365][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9246.181366][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9246.181368][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9246.181369][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9246.181372][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9246.181373][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9246.181375][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9246.181377][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9246.181378][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9246.181380][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9246.181382][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9246.181384][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9246.181385][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9246.181387][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9246.181389][    C2]  vfs_write (fs/read_write.c:686)
[ 9246.181391][    C2]  ksys_write (fs/read_write.c:739)
[ 9246.181393][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9246.181395][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9246.181397][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9246.181399][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9246.181400][    C2] RIP: 0033:0x7f814975fc5e
[ 9246.181402][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9246.181403][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9246.181405][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9246.181405][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9246.181406][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9246.181407][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9246.181408][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9272.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9272.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9272.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9272.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 9272.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9272.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9272.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9272.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9272.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9272.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9272.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9272.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9272.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9272.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9272.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9272.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9272.394790][    C2] PKRU: 55555554
[ 9272.394790][    C2] Call Trace:
[ 9272.394793][    C2]  <TASK>
[ 9272.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9272.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9272.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9272.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9272.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9272.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9272.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9272.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9272.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9272.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9272.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9272.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9272.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9272.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9272.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9272.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9272.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9272.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9272.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9272.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9272.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9272.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9272.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9272.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9272.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9272.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9272.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9272.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9272.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9272.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9272.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9272.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9272.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9272.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9272.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9272.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9272.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9272.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9272.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9272.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9272.394878][    C2]  vfs_write (fs/read_write.c:686)
[ 9272.394880][    C2]  ksys_write (fs/read_write.c:739)
[ 9272.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9272.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9272.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9272.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9272.394890][    C2] RIP: 0033:0x7f814975fc5e
[ 9272.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9272.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9272.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9272.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9272.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9272.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9272.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9274.704994][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9274.705155][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9274.705256][    C2] NMI backtrace for cpu 2
| [ 9274.705265][    C2] Tainted: [L]=SOFTLOCKUP
[ 9274.705266][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9274.705267][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[ 9274.705271][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[ 9274.705273][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 9274.705275][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 9274.705276][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 9274.705277][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 9274.705278][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 9274.705278][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 9274.705281][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9274.705284][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9274.705285][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9274.705286][    C2] PKRU: 55555554
[ 9274.705287][    C2] Call Trace:
[ 9274.705289][    C2]  <IRQ>
[ 9274.705291][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 9274.705293][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 9274.705296][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 9274.705298][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 9274.705300][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9274.705302][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9274.705304][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9274.705306][    C2]  </IRQ>
[ 9274.705307][    C2]  <TASK>
[ 9274.705308][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9274.705310][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9274.705312][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9274.705313][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9274.705314][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9274.705315][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9274.705315][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9274.705316][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9274.705317][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9274.705318][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9274.705321][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9274.705323][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9274.705325][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9274.705327][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9274.705329][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9274.705331][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9274.705334][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9274.705336][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9274.705339][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9274.705341][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9274.705343][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9274.705346][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9274.705348][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9274.705349][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9274.705352][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9274.705353][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9274.705356][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9274.705358][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9274.705360][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9274.705362][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9274.705364][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9274.705367][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9274.705369][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9274.705371][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9274.705373][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9274.705374][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9274.705376][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9274.705378][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9274.705379][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9274.705381][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9274.705383][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9274.705385][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9274.705386][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9274.705388][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9274.705390][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9274.705391][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9274.705393][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9274.705395][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9274.705396][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9274.705398][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9274.705400][    C2]  vfs_write (fs/read_write.c:686)
[ 9274.705402][    C2]  ksys_write (fs/read_write.c:739)
[ 9274.705404][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9274.705406][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9274.705408][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9274.705410][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9274.705411][    C2] RIP: 0033:0x7f814975fc5e
[ 9274.705413][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9274.705414][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9274.705415][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9274.705416][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9274.705417][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9274.705418][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9274.705418][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9300.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9300.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9300.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9300.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 9300.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9300.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9300.394783][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9300.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9300.394786][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9300.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9300.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9300.394789][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9300.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9300.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9300.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9300.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9300.394797][    C2] PKRU: 55555554
[ 9300.394798][    C2] Call Trace:
[ 9300.394801][    C2]  <TASK>
[ 9300.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9300.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9300.394809][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9300.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9300.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9300.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9300.394818][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9300.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9300.394823][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9300.394825][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9300.394827][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9300.394830][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9300.394832][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9300.394834][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9300.394836][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9300.394838][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9300.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9300.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9300.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9300.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9300.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9300.394851][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9300.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9300.394855][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9300.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9300.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9300.394860][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9300.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9300.394864][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9300.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9300.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9300.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9300.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9300.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9300.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9300.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9300.394879][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9300.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9300.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9300.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9300.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 9300.394888][    C2]  ksys_write (fs/read_write.c:739)
[ 9300.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9300.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9300.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9300.394896][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9300.394898][    C2] RIP: 0033:0x7f814975fc5e
[ 9300.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9300.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9300.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9300.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9300.394904][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9300.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9300.394906][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9324.184626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9324.184847][    C2] rcu: 2-....: (8369077 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3317837
| [ 9324.185164][    C2] rcu: (t=8372412 jiffies g=521497 q=167119 ncpus=4)
| [ 9324.185310][    C2] Tainted: [L]=SOFTLOCKUP
[ 9324.185311][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9324.185312][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9324.185316][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9324.185317][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9324.185320][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9324.185321][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9324.185322][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9324.185322][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9324.185323][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9324.185325][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9324.185329][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9324.185330][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9324.185331][    C2] PKRU: 55555554
[ 9324.185331][    C2] Call Trace:
[ 9324.185332][    C2]  <TASK>
[ 9324.185333][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9324.185336][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9324.185338][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9324.185340][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9324.185342][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9324.185344][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9324.185346][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9324.185349][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9324.185352][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9324.185353][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9324.185356][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9324.185358][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9324.185360][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9324.185362][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9324.185364][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9324.185366][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9324.185369][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9324.185370][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9324.185372][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9324.185374][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9324.185376][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9324.185379][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9324.185381][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9324.185383][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9324.185385][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9324.185387][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9324.185388][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9324.185390][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9324.185391][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9324.185393][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9324.185395][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9324.185397][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9324.185399][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9324.185400][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9324.185402][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9324.185404][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9324.185405][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9324.185407][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9324.185409][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9324.185410][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9324.185413][    C2]  vfs_write (fs/read_write.c:686)
[ 9324.185415][    C2]  ksys_write (fs/read_write.c:739)
[ 9324.185416][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9324.185418][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9324.185420][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9324.185422][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9324.185424][    C2] RIP: 0033:0x7f814975fc5e
[ 9324.185426][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9324.185427][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9324.185429][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9324.185429][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9324.185430][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9324.185431][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9324.185432][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9348.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9348.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9348.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9348.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 9348.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9348.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9348.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9348.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9348.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9348.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9348.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9348.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9348.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9348.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9348.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9348.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9348.394788][    C2] PKRU: 55555554
[ 9348.394789][    C2] Call Trace:
[ 9348.394792][    C2]  <TASK>
[ 9348.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9348.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9348.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9348.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9348.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9348.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9348.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9348.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9348.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9348.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9348.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9348.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9348.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9348.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9348.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9348.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9348.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9348.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9348.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9348.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9348.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9348.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9348.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9348.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9348.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9348.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9348.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9348.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9348.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9348.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9348.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9348.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9348.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9348.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9348.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9348.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9348.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9348.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9348.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9348.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9348.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 9348.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 9348.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9348.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9348.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9348.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9348.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 9348.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9348.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9348.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9348.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9348.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9348.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9348.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9373.008036][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9373.008200][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9373.008361][    C2] NMI backtrace for cpu 2
| [ 9373.008371][    C2] Tainted: [L]=SOFTLOCKUP
[ 9373.008372][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9373.008373][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 9373.008377][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 9373.008379][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 9373.008381][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 9373.008382][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 9373.008383][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 9373.008384][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 9373.008384][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 9373.008387][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9373.008391][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9373.008392][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9373.008392][    C2] PKRU: 55555554
[ 9373.008393][    C2] Call Trace:
[ 9373.008396][    C2]  <IRQ>
[ 9373.008400][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 9373.008402][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 9373.008405][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 9373.008407][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 9373.008409][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9373.008411][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9373.008414][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9373.008416][    C2]  </IRQ>
[ 9373.008417][    C2]  <TASK>
[ 9373.008417][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9373.008419][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9373.008422][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9373.008423][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9373.008424][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9373.008424][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9373.008425][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9373.008426][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9373.008427][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9373.008428][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9373.008431][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9373.008433][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9373.008435][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9373.008437][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9373.008440][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9373.008441][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9373.008444][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9373.008446][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9373.008449][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9373.008451][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9373.008453][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9373.008456][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9373.008458][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9373.008460][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9373.008462][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9373.008464][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9373.008467][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9373.008469][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9373.008471][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9373.008473][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9373.008474][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9373.008478][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9373.008480][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9373.008482][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9373.008484][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9373.008485][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9373.008487][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9373.008489][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9373.008490][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9373.008492][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9373.008494][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9373.008496][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9373.008497][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9373.008499][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9373.008501][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9373.008502][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9373.008504][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9373.008506][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9373.008507][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9373.008509][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9373.008511][    C2]  vfs_write (fs/read_write.c:686)
[ 9373.008514][    C2]  ksys_write (fs/read_write.c:739)
[ 9373.008515][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9373.008517][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9373.008519][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9373.008521][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9373.008523][    C2] RIP: 0033:0x7f814975fc5e
[ 9373.008525][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9373.008526][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9373.008528][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9373.008528][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9373.008529][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9373.008530][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9373.008531][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9400.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9400.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9400.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9400.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 9400.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9400.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9400.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9400.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9400.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9400.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9400.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9400.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9400.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9400.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9400.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9400.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9400.394795][    C2] PKRU: 55555554
[ 9400.394796][    C2] Call Trace:
[ 9400.394799][    C2]  <TASK>
[ 9400.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9400.394804][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9400.394806][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9400.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9400.394811][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9400.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9400.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9400.394818][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9400.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9400.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9400.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9400.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9400.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9400.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9400.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9400.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9400.394838][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9400.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9400.394842][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9400.394844][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9400.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9400.394849][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9400.394851][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9400.394853][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9400.394855][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9400.394857][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9400.394858][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9400.394860][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9400.394862][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9400.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9400.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9400.394867][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9400.394869][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9400.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9400.394872][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9400.394874][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9400.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9400.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9400.394879][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9400.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9400.394883][    C2]  vfs_write (fs/read_write.c:686)
[ 9400.394885][    C2]  ksys_write (fs/read_write.c:739)
[ 9400.394887][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9400.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9400.394891][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9400.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9400.394895][    C2] RIP: 0033:0x7f814975fc5e
[ 9400.394897][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9400.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9400.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9400.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9400.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9400.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9400.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9402.188625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9402.188875][    C2] rcu: 2-....: (8447047 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3352922
| [ 9402.189116][    C2] rcu: (t=8450416 jiffies g=521497 q=168710 ncpus=4)
| [ 9402.189302][    C2] Tainted: [L]=SOFTLOCKUP
[ 9402.189303][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9402.189304][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9402.189307][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9402.189309][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9402.189310][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9402.189312][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9402.189313][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9402.189313][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9402.189314][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9402.189316][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9402.189319][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9402.189320][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9402.189321][    C2] PKRU: 55555554
[ 9402.189321][    C2] Call Trace:
[ 9402.189322][    C2]  <TASK>
[ 9402.189323][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9402.189325][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9402.189327][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9402.189330][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9402.189332][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9402.189334][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9402.189336][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9402.189338][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9402.189341][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9402.189343][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9402.189345][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9402.189348][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9402.189350][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9402.189352][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9402.189354][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9402.189356][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9402.189358][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9402.189360][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9402.189362][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9402.189364][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9402.189366][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9402.189369][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9402.189371][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9402.189373][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9402.189375][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9402.189377][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9402.189378][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9402.189380][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9402.189382][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9402.189383][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9402.189386][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9402.189387][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9402.189389][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9402.189390][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9402.189392][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9402.189394][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9402.189395][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9402.189397][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9402.189399][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9402.189400][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9402.189403][    C2]  vfs_write (fs/read_write.c:686)
[ 9402.189405][    C2]  ksys_write (fs/read_write.c:739)
[ 9402.189407][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9402.189408][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9402.189410][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9402.189412][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9402.189414][    C2] RIP: 0033:0x7f814975fc5e
[ 9402.189415][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9402.189417][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9402.189418][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9402.189419][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9402.189420][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9402.189420][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9402.189421][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9428.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9428.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9428.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9428.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 9428.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9428.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9428.394775][    C2] Code: 89 fc 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 be 04 00 00 00 48 89 df e8 1f 1f 52 fe 41 0f b6 45 00 41 38 c4 7c 08 84 c0 <0f> 85 30 06 00 00 8b 03 89 44 24 48 85 c0 0f 85 8d 03 00 00 48 89
All code
========
   0:	89 fc                	mov    %edi,%esp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	41 83 e4 07          	and    $0x7,%r12d
   a:	49 01 c5             	add    %rax,%r13
   d:	41 83 c4 03          	add    $0x3,%r12d
  11:	be 04 00 00 00       	mov    $0x4,%esi
  16:	48 89 df             	mov    %rbx,%rdi
  19:	e8 1f 1f 52 fe       	call   0xfffffffffe521f3d
  1e:	41 0f b6 45 00       	movzbl 0x0(%r13),%eax
  23:	41 38 c4             	cmp    %al,%r12b
  26:	7c 08                	jl     0x30
  28:	84 c0                	test   %al,%al
  2a:*	0f 85 30 06 00 00    	jne    0x660		<-- trapping instruction
  30:	8b 03                	mov    (%rbx),%eax
  32:	89 44 24 48          	mov    %eax,0x48(%rsp)
  36:	85 c0                	test   %eax,%eax
  38:	0f 85 8d 03 00 00    	jne    0x3cb
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	0f 85 30 06 00 00    	jne    0x636
   6:	8b 03                	mov    (%rbx),%eax
   8:	89 44 24 48          	mov    %eax,0x48(%rsp)
   c:	85 c0                	test   %eax,%eax
   e:	0f 85 8d 03 00 00    	jne    0x3a1
  14:	48                   	rex.W
  15:	89                   	.byte 0x89
[ 9428.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000246
[ 9428.394778][    C2] RAX: 0000000000000000 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9428.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9428.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9428.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9428.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9428.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9428.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9428.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9428.394790][    C2] PKRU: 55555554
[ 9428.394791][    C2] Call Trace:
[ 9428.394794][    C2]  <TASK>
[ 9428.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9428.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9428.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9428.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9428.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9428.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9428.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9428.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9428.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9428.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9428.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9428.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9428.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9428.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9428.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9428.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9428.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9428.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9428.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9428.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9428.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9428.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9428.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9428.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9428.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9428.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9428.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9428.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9428.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9428.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9428.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9428.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9428.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9428.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9428.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9428.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9428.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9428.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9428.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9428.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9428.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 9428.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 9428.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9428.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9428.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9428.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9428.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 9428.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9428.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9428.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9428.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9428.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9428.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9428.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9456.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9456.394759][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9456.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9456.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 9456.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9456.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9456.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9456.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9456.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9456.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9456.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9456.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9456.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9456.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9456.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9456.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9456.394788][    C2] PKRU: 55555554
[ 9456.394788][    C2] Call Trace:
[ 9456.394791][    C2]  <TASK>
[ 9456.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9456.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9456.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9456.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9456.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9456.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9456.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9456.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9456.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9456.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9456.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9456.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9456.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9456.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9456.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9456.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9456.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9456.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9456.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9456.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9456.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9456.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9456.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9456.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9456.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9456.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9456.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9456.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9456.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9456.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9456.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9456.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9456.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9456.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9456.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9456.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9456.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9456.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9456.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9456.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9456.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 9456.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 9456.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9456.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9456.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9456.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9456.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 9456.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9456.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9456.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9456.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9456.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9456.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9456.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9471.312022][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9471.312141][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9471.312279][    C2] NMI backtrace for cpu 2
| [ 9471.312289][    C2] Tainted: [L]=SOFTLOCKUP
[ 9471.312290][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9471.312292][    C2] RIP: 0010:native_apic_msr_eoi (./arch/x86/include/asm/apic.h:218)
[ 9471.312296][    C2] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 0f 1f 44 00 00 b8 01 00 00 00 c3 90 f3 0f 1e fa 31 c0 b9 0b 08 00 00 89 c2 0f 30 <c3> f3 0f 1e fa 0f 1f 44 00 00 89 f8 c3 0f 1f 40 00 f3 0f 1e fa 0f
All code
========
   0:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   7:	00 00 00 00 
   b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	b8 01 00 00 00       	mov    $0x1,%eax
  19:	c3                   	ret
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	31 c0                	xor    %eax,%eax
  21:	b9 0b 08 00 00       	mov    $0x80b,%ecx
  26:	89 c2                	mov    %eax,%edx
  28:	0f 30                	wrmsr
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	f3 0f 1e fa          	endbr64
  2f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  34:	89 f8                	mov    %edi,%eax
  36:	c3                   	ret
  37:	0f 1f 40 00          	nopl   0x0(%rax)
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	f3 0f 1e fa          	endbr64
   5:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   a:	89 f8                	mov    %edi,%eax
   c:	c3                   	ret
   d:	0f 1f 40 00          	nopl   0x0(%rax)
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[ 9471.312297][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000046
[ 9471.312299][    C2] RAX: 0000000000000000 RBX: ff11000002980428 RCX: 000000000000080b
[ 9471.312301][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ff11000035323bc8
[ 9471.312301][    C2] RBP: ff11000002980438 R08: ffffffffaa0fb5d2 R09: ffe21c0006a64779
[ 9471.312302][    C2] R10: ffe21c0006a6477a R11: 1fe2200006a6666a R12: ff110000027b3040
[ 9471.312303][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 9471.312306][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9471.312309][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9471.312310][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9471.312311][    C2] PKRU: 55555554
[ 9471.312312][    C2] Call Trace:
[ 9471.312315][    C2]  <IRQ>
[ 9471.312316][    C2]  ioapic_ack_level (arch/x86/kernel/apic/io_apic.c:1715 (discriminator 4))
[ 9471.312321][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 9471.312324][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9471.312326][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9471.312328][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9471.312330][    C2]  </IRQ>
[ 9471.312331][    C2]  <TASK>
[ 9471.312331][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9471.312334][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9471.312335][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9471.312337][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9471.312338][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9471.312338][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9471.312339][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9471.312340][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9471.312341][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9471.312342][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9471.312345][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9471.312347][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9471.312349][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9471.312351][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9471.312353][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9471.312355][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9471.312358][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9471.312360][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9471.312363][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9471.312364][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9471.312367][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9471.312370][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9471.312372][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9471.312373][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9471.312375][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9471.312378][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9471.312380][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9471.312382][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9471.312384][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9471.312386][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9471.312388][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9471.312391][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9471.312393][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9471.312395][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9471.312397][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9471.312398][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9471.312399][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9471.312401][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9471.312403][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9471.312405][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9471.312407][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9471.312409][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9471.312410][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9471.312412][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9471.312413][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9471.312415][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9471.312417][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9471.312419][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9471.312420][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9471.312422][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9471.312424][    C2]  vfs_write (fs/read_write.c:686)
[ 9471.312426][    C2]  ksys_write (fs/read_write.c:739)
[ 9471.312428][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9471.312430][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9471.312432][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9471.312433][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9471.312435][    C2] RIP: 0033:0x7f814975fc5e
[ 9471.312437][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9471.312438][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9471.312440][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9471.312440][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9471.312441][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9471.312442][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9471.312443][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9480.192627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9480.192960][    C2] rcu: 2-....: (8525018 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3389907
| [ 9480.193195][    C2] rcu: (t=8528420 jiffies g=521497 q=170293 ncpus=4)
| [ 9480.193347][    C2] Tainted: [L]=SOFTLOCKUP
[ 9480.193348][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9480.193350][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9480.193354][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9480.193356][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9480.193358][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9480.193359][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9480.193360][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9480.193361][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9480.193362][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9480.193364][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9480.193367][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9480.193368][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9480.193369][    C2] PKRU: 55555554
[ 9480.193369][    C2] Call Trace:
[ 9480.193370][    C2]  <TASK>
[ 9480.193371][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9480.193374][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9480.193376][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9480.193379][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9480.193381][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9480.193383][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9480.193385][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9480.193387][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9480.193390][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9480.193392][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9480.193394][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9480.193397][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9480.193399][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9480.193401][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9480.193403][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9480.193405][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9480.193407][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9480.193409][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9480.193411][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9480.193414][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9480.193415][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9480.193418][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9480.193420][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9480.193422][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9480.193424][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9480.193426][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9480.193427][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9480.193429][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9480.193431][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9480.193432][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9480.193435][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9480.193436][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9480.193438][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9480.193440][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9480.193441][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9480.193443][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9480.193444][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9480.193446][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9480.193448][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9480.193449][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9480.193452][    C2]  vfs_write (fs/read_write.c:686)
[ 9480.193454][    C2]  ksys_write (fs/read_write.c:739)
[ 9480.193456][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9480.193457][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9480.193460][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9480.193461][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9480.193463][    C2] RIP: 0033:0x7f814975fc5e
[ 9480.193465][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9480.193466][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9480.193467][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9480.193468][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9480.193469][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9480.193470][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9480.193470][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9504.394761][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9504.394763][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9504.394765][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9504.394772][    C2] Tainted: [L]=SOFTLOCKUP
[ 9504.394773][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9504.394774][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9504.394777][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9504.394778][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9504.394780][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9504.394781][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9504.394782][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9504.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9504.394783][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9504.394786][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9504.394789][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9504.394790][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9504.394791][    C2] PKRU: 55555554
[ 9504.394792][    C2] Call Trace:
[ 9504.394795][    C2]  <TASK>
[ 9504.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9504.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9504.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9504.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9504.394808][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9504.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9504.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9504.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9504.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9504.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9504.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9504.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9504.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9504.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9504.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9504.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9504.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9504.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9504.394839][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9504.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9504.394843][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9504.394846][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9504.394848][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9504.394850][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9504.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9504.394854][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9504.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9504.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9504.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9504.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9504.394863][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9504.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9504.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9504.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9504.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9504.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9504.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9504.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9504.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9504.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9504.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 9504.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 9504.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9504.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9504.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9504.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9504.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 9504.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9504.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9504.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9504.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9504.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9504.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9504.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9532.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9532.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9532.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9532.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 9532.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9532.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9532.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9532.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9532.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9532.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9532.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9532.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9532.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9532.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9532.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9532.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9532.394788][    C2] PKRU: 55555554
[ 9532.394789][    C2] Call Trace:
[ 9532.394792][    C2]  <TASK>
[ 9532.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9532.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9532.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9532.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9532.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9532.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9532.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9532.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9532.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9532.394816][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9532.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9532.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9532.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9532.394825][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9532.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9532.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9532.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9532.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9532.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9532.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9532.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9532.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9532.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9532.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9532.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9532.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9532.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9532.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9532.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9532.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9532.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9532.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9532.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9532.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9532.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9532.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9532.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9532.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9532.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9532.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9532.394877][    C2]  vfs_write (fs/read_write.c:686)
[ 9532.394879][    C2]  ksys_write (fs/read_write.c:739)
[ 9532.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9532.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9532.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9532.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9532.394889][    C2] RIP: 0033:0x7f814975fc5e
[ 9532.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9532.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9532.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9532.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9532.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9532.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9532.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9558.196625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9558.196920][    C2] rcu: 2-....: (8602998 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3423460
| [ 9558.197168][    C2] rcu: (t=8606424 jiffies g=521497 q=171430 ncpus=4)
| [ 9558.197319][    C2] Tainted: [L]=SOFTLOCKUP
[ 9558.197319][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9558.197321][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9558.197326][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9558.197327][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9558.197329][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9558.197331][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9558.197332][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9558.197333][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9558.197333][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9558.197336][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9558.197339][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9558.197340][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9558.197341][    C2] PKRU: 55555554
[ 9558.197341][    C2] Call Trace:
[ 9558.197342][    C2]  <TASK>
[ 9558.197343][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9558.197345][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9558.197348][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9558.197350][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9558.197352][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9558.197354][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9558.197357][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9558.197359][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9558.197362][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9558.197363][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9558.197366][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9558.197368][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9558.197370][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9558.197372][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9558.197374][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9558.197376][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9558.197379][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9558.197381][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9558.197383][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9558.197385][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9558.197386][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9558.197389][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9558.197392][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9558.197394][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9558.197396][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9558.197397][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9558.197399][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9558.197401][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9558.197402][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9558.197404][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9558.197406][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9558.197408][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9558.197409][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9558.197411][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9558.197413][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9558.197414][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9558.197416][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9558.197418][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9558.197419][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9558.197421][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9558.197423][    C2]  vfs_write (fs/read_write.c:686)
[ 9558.197425][    C2]  ksys_write (fs/read_write.c:739)
[ 9558.197427][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9558.197429][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9558.197431][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9558.197432][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9558.197434][    C2] RIP: 0033:0x7f814975fc5e
[ 9558.197436][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9558.197437][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9558.197439][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9558.197440][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9558.197440][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9558.197441][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9558.197442][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9569.616045][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9569.616163][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9569.616274][    C2] NMI backtrace for cpu 2
| [ 9569.616284][    C2] Tainted: [L]=SOFTLOCKUP
[ 9569.616284][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9569.616286][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 9569.616289][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 9569.616290][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 9569.616293][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 9569.616294][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 9569.616295][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 9569.616296][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 9569.616296][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 9569.616299][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9569.616302][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9569.616303][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9569.616304][    C2] PKRU: 55555554
[ 9569.616305][    C2] Call Trace:
[ 9569.616308][    C2]  <IRQ>
[ 9569.616312][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 9569.616314][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 9569.616317][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 9569.616319][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 9569.616321][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9569.616323][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9569.616326][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9569.616328][    C2]  </IRQ>
[ 9569.616328][    C2]  <TASK>
[ 9569.616329][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9569.616331][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9569.616334][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9569.616335][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9569.616336][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9569.616337][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9569.616338][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9569.616339][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9569.616339][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9569.616341][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9569.616343][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9569.616345][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9569.616347][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9569.616350][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9569.616352][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9569.616354][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9569.616356][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9569.616359][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9569.616362][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9569.616363][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9569.616366][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9569.616368][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9569.616371][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9569.616372][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9569.616374][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9569.616376][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9569.616379][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9569.616381][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9569.616383][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9569.616385][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9569.616387][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9569.616390][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9569.616392][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9569.616394][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9569.616396][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9569.616397][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9569.616399][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9569.616401][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9569.616403][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9569.616404][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9569.616406][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9569.616408][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9569.616410][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9569.616411][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9569.616413][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9569.616415][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9569.616417][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9569.616418][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9569.616420][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9569.616422][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9569.616424][    C2]  vfs_write (fs/read_write.c:686)
[ 9569.616426][    C2]  ksys_write (fs/read_write.c:739)
[ 9569.616428][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9569.616430][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9569.616432][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9569.616433][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9569.616435][    C2] RIP: 0033:0x7f814975fc5e
[ 9569.616438][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9569.616439][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9569.616440][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9569.616441][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9569.616442][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9569.616442][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9569.616443][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9596.394767][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9596.394769][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9596.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9596.394778][    C2] Tainted: [L]=SOFTLOCKUP
[ 9596.394779][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9596.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9596.394783][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9596.394784][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9596.394786][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9596.394787][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9596.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9596.394789][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9596.394789][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9596.394792][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9596.394795][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9596.394796][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9596.394797][    C2] PKRU: 55555554
[ 9596.394798][    C2] Call Trace:
[ 9596.394801][    C2]  <TASK>
[ 9596.394804][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9596.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9596.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9596.394811][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9596.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9596.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9596.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9596.394820][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9596.394827][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9596.394829][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9596.394831][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9596.394834][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9596.394836][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9596.394838][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9596.394840][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9596.394842][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9596.394845][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9596.394846][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9596.394849][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9596.394851][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9596.394853][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9596.394856][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9596.394858][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9596.394860][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9596.394862][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9596.394863][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9596.394865][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9596.394867][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9596.394869][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9596.394870][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9596.394872][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9596.394874][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9596.394876][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9596.394877][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9596.394879][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9596.394881][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9596.394882][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9596.394884][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9596.394886][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9596.394887][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9596.394890][    C2]  vfs_write (fs/read_write.c:686)
[ 9596.394892][    C2]  ksys_write (fs/read_write.c:739)
[ 9596.394894][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9596.394896][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9596.394898][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9596.394900][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9596.394902][    C2] RIP: 0033:0x7f814975fc5e
[ 9596.394904][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9596.394905][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9596.394906][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9596.394907][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9596.394908][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9596.394909][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9596.394909][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9624.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9624.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9624.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9624.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 9624.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9624.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9624.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9624.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9624.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9624.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9624.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9624.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9624.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9624.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9624.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9624.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9624.394790][    C2] PKRU: 55555554
[ 9624.394790][    C2] Call Trace:
[ 9624.394794][    C2]  <TASK>
[ 9624.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9624.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9624.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9624.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9624.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9624.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9624.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9624.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9624.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9624.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9624.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9624.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9624.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9624.394828][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9624.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9624.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9624.394835][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9624.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9624.394839][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9624.394841][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9624.394843][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9624.394846][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9624.394848][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9624.394850][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9624.394852][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9624.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9624.394855][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9624.394857][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9624.394859][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9624.394860][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9624.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9624.394864][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9624.394866][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9624.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9624.394869][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9624.394871][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9624.394873][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9624.394875][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9624.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9624.394878][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9624.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 9624.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 9624.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9624.394886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9624.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9624.394890][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9624.394892][    C2] RIP: 0033:0x7f814975fc5e
[ 9624.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9624.394896][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9624.394898][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9624.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9624.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9624.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9624.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9636.200625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9636.200836][    C2] rcu: 2-....: (8680969 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3458381
| [ 9636.201045][    C2] rcu: (t=8684428 jiffies g=521497 q=173021 ncpus=4)
| [ 9636.201263][    C2] Tainted: [L]=SOFTLOCKUP
[ 9636.201264][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9636.201265][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9636.201269][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9636.201270][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9636.201272][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9636.201274][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9636.201275][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9636.201275][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9636.201276][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9636.201278][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9636.201281][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9636.201282][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9636.201283][    C2] PKRU: 55555554
[ 9636.201284][    C2] Call Trace:
[ 9636.201285][    C2]  <TASK>
[ 9636.201286][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9636.201288][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9636.201290][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9636.201293][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9636.201295][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9636.201297][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9636.201299][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9636.201301][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9636.201304][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9636.201306][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9636.201308][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9636.201311][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9636.201313][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9636.201315][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9636.201317][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9636.201319][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9636.201321][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9636.201323][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9636.201325][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9636.201327][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9636.201329][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9636.201332][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9636.201334][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9636.201336][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9636.201338][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9636.201340][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9636.201342][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9636.201344][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9636.201345][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9636.201347][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9636.201349][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9636.201351][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9636.201352][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9636.201354][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9636.201356][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9636.201357][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9636.201359][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9636.201361][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9636.201363][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9636.201364][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9636.201367][    C2]  vfs_write (fs/read_write.c:686)
[ 9636.201369][    C2]  ksys_write (fs/read_write.c:739)
[ 9636.201370][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9636.201372][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9636.201374][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9636.201376][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9636.201378][    C2] RIP: 0033:0x7f814975fc5e
[ 9636.201380][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9636.201381][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9636.201382][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9636.201383][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9636.201384][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9636.201385][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9636.201385][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9660.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9660.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9660.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9660.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 9660.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9660.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9660.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9660.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9660.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9660.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9660.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9660.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9660.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9660.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9660.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9660.394786][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9660.394787][    C2] PKRU: 55555554
[ 9660.394788][    C2] Call Trace:
[ 9660.394790][    C2]  <TASK>
[ 9660.394793][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9660.394795][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9660.394797][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9660.394800][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9660.394802][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9660.394804][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9660.394806][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9660.394809][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9660.394811][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9660.394813][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9660.394816][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9660.394818][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9660.394821][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9660.394822][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9660.394824][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9660.394827][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9660.394829][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9660.394831][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9660.394833][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9660.394835][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9660.394837][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9660.394840][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9660.394842][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9660.394844][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9660.394846][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9660.394848][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9660.394849][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9660.394851][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9660.394853][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9660.394854][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9660.394857][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9660.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9660.394860][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9660.394862][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9660.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9660.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9660.394867][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9660.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9660.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9660.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9660.394875][    C2]  vfs_write (fs/read_write.c:686)
[ 9660.394877][    C2]  ksys_write (fs/read_write.c:739)
[ 9660.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9660.394880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9660.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9660.394884][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9660.394886][    C2] RIP: 0033:0x7f814975fc5e
[ 9660.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9660.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9660.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9660.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9660.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9660.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9660.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9667.920067][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9667.920190][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9667.920298][    C2] NMI backtrace for cpu 2
| [ 9667.920307][    C2] Tainted: [L]=SOFTLOCKUP
[ 9667.920307][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9667.920309][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 9667.920313][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 9667.920314][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 9667.920316][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 9667.920318][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 9667.920319][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 9667.920319][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 9667.920320][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 9667.920323][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9667.920326][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9667.920327][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9667.920328][    C2] PKRU: 55555554
[ 9667.920329][    C2] Call Trace:
[ 9667.920330][    C2]  <IRQ>
[ 9667.920332][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 9667.920334][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 9667.920337][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 9667.920339][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 9667.920341][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9667.920343][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9667.920345][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9667.920347][    C2]  </IRQ>
[ 9667.920348][    C2]  <TASK>
[ 9667.920349][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9667.920350][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9667.920352][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9667.920353][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9667.920354][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9667.920355][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9667.920356][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9667.920357][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9667.920357][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9667.920359][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9667.920361][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9667.920363][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9667.920365][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9667.920368][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9667.920370][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9667.920371][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9667.920374][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9667.920376][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9667.920379][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9667.920381][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9667.920383][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9667.920386][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9667.920388][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9667.920390][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9667.920392][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9667.920394][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9667.920396][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9667.920398][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9667.920400][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9667.920402][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9667.920404][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9667.920407][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9667.920409][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9667.920411][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9667.920413][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9667.920414][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9667.920415][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9667.920417][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9667.920419][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9667.920420][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9667.920423][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9667.920424][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9667.920426][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9667.920428][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9667.920429][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9667.920440][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9667.920441][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9667.920443][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9667.920445][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9667.920446][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9667.920449][    C2]  vfs_write (fs/read_write.c:686)
[ 9667.920451][    C2]  ksys_write (fs/read_write.c:739)
[ 9667.920452][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9667.920454][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9667.920456][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9667.920458][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9667.920459][    C2] RIP: 0033:0x7f814975fc5e
[ 9667.920461][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9667.920462][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9667.920463][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9667.920464][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9667.920465][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9667.920466][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9667.920466][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9692.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9692.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9692.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9692.394776][    C2] Tainted: [L]=SOFTLOCKUP
[ 9692.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9692.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9692.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9692.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9692.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9692.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9692.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9692.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9692.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9692.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9692.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9692.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9692.394796][    C2] PKRU: 55555554
[ 9692.394796][    C2] Call Trace:
[ 9692.394800][    C2]  <TASK>
[ 9692.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9692.394806][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9692.394808][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9692.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9692.394813][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9692.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9692.394817][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9692.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9692.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9692.394824][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9692.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9692.394829][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9692.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9692.394833][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9692.394835][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9692.394837][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9692.394840][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9692.394842][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9692.394844][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9692.394846][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9692.394848][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9692.394852][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9692.394854][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9692.394856][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9692.394858][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9692.394859][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9692.394861][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9692.394863][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9692.394865][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9692.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9692.394868][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9692.394870][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9692.394872][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9692.394873][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9692.394875][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9692.394877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9692.394878][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9692.394880][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9692.394882][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9692.394883][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9692.394886][    C2]  vfs_write (fs/read_write.c:686)
[ 9692.394888][    C2]  ksys_write (fs/read_write.c:739)
[ 9692.394890][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9692.394892][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9692.394894][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9692.394896][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9692.394898][    C2] RIP: 0033:0x7f814975fc5e
[ 9692.394900][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9692.394901][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9692.394903][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9692.394904][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9692.394905][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9692.394905][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9692.394906][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9714.204625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9714.204893][    C2] rcu: 2-....: (8758940 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3492451
| [ 9714.205175][    C2] rcu: (t=8762432 jiffies g=521497 q=174612 ncpus=4)
| [ 9714.205308][    C2] Tainted: [L]=SOFTLOCKUP
[ 9714.205309][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9714.205310][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9714.205314][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9714.205315][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9714.205318][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9714.205319][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9714.205320][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9714.205321][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9714.205321][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9714.205324][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9714.205327][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9714.205328][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9714.205329][    C2] PKRU: 55555554
[ 9714.205329][    C2] Call Trace:
[ 9714.205330][    C2]  <TASK>
[ 9714.205331][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9714.205334][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9714.205336][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9714.205338][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9714.205341][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9714.205342][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9714.205345][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9714.205347][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9714.205350][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9714.205352][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9714.205354][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9714.205357][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9714.205359][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9714.205361][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9714.205363][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9714.205365][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9714.205367][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9714.205369][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9714.205371][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9714.205373][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9714.205375][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9714.205378][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9714.205380][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9714.205382][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9714.205384][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9714.205385][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9714.205387][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9714.205389][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9714.205390][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9714.205392][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9714.205394][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9714.205396][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9714.205398][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9714.205399][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9714.205401][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9714.205403][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9714.205404][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9714.205406][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9714.205408][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9714.205409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9714.205412][    C2]  vfs_write (fs/read_write.c:686)
[ 9714.205414][    C2]  ksys_write (fs/read_write.c:739)
[ 9714.205416][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9714.205417][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9714.205420][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9714.205421][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9714.205423][    C2] RIP: 0033:0x7f814975fc5e
[ 9714.205425][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9714.205426][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9714.205428][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9714.205429][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9714.205429][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9714.205430][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9714.205431][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9740.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9740.394762][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9740.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9740.394770][    C2] Tainted: [L]=SOFTLOCKUP
[ 9740.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9740.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9740.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9740.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9740.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9740.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9740.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9740.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9740.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9740.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9740.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9740.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9740.394790][    C2] PKRU: 55555554
[ 9740.394791][    C2] Call Trace:
[ 9740.394794][    C2]  <TASK>
[ 9740.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9740.394800][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9740.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9740.394805][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9740.394807][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9740.394809][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9740.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9740.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9740.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9740.394819][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9740.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9740.394824][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9740.394826][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9740.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9740.394830][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9740.394832][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9740.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9740.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9740.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9740.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9740.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9740.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9740.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9740.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9740.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9740.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9740.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9740.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9740.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9740.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9740.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9740.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9740.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9740.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9740.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9740.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9740.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9740.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9740.394876][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9740.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9740.394880][    C2]  vfs_write (fs/read_write.c:686)
[ 9740.394882][    C2]  ksys_write (fs/read_write.c:739)
[ 9740.394884][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9740.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9740.394888][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9740.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9740.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 9740.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9740.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9740.394897][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9740.394898][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9740.394899][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9740.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9740.394900][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9766.224061][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9766.224176][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9766.224286][    C2] NMI backtrace for cpu 2
| [ 9766.224296][    C2] Tainted: [L]=SOFTLOCKUP
[ 9766.224297][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9766.224299][    C2] RIP: 0010:trace_irq_handler_exit (./include/trace/events/irq.h:83 (discriminator 29))
[ 9766.224303][    C2] Code: 83 fb 3f 0f 87 34 01 00 00 48 89 d8 be 08 00 00 00 48 c1 e8 06 48 8d 3c c5 50 0e c9 ad e8 5c 51 75 00 48 0f a3 1d 94 af 98 03 <0f> 82 c0 00 00 00 48 83 c4 08 5b 41 5e 41 5f c3 65 8b 1d 61 41 2a
All code
========
   0:	83 fb 3f             	cmp    $0x3f,%ebx
   3:	0f 87 34 01 00 00    	ja     0x13d
   9:	48 89 d8             	mov    %rbx,%rax
   c:	be 08 00 00 00       	mov    $0x8,%esi
  11:	48 c1 e8 06          	shr    $0x6,%rax
  15:	48 8d 3c c5 50 0e c9 	lea    -0x5236f1b0(,%rax,8),%rdi
  1c:	ad 
  1d:	e8 5c 51 75 00       	call   0x75517e
  22:	48 0f a3 1d 94 af 98 	bt     %rbx,0x398af94(%rip)        # 0x398afbe
  29:	03 
  2a:*	0f 82 c0 00 00 00    	jb     0xf0		<-- trapping instruction
  30:	48 83 c4 08          	add    $0x8,%rsp
  34:	5b                   	pop    %rbx
  35:	41 5e                	pop    %r14
  37:	41 5f                	pop    %r15
  39:	c3                   	ret
  3a:	65                   	gs
  3b:	8b                   	.byte 0x8b
  3c:	1d                   	.byte 0x1d
  3d:	61                   	(bad)
  3e:	41                   	rex.B
  3f:	2a                   	.byte 0x2a

Code starting with the faulting instruction
===========================================
   0:	0f 82 c0 00 00 00    	jb     0xc6
   6:	48 83 c4 08          	add    $0x8,%rsp
   a:	5b                   	pop    %rbx
   b:	41 5e                	pop    %r14
   d:	41 5f                	pop    %r15
   f:	c3                   	ret
  10:	65                   	gs
  11:	8b                   	.byte 0x8b
  12:	1d                   	.byte 0x1d
  13:	61                   	(bad)
  14:	41                   	rex.B
  15:	2a                   	.byte 0x2a
[ 9766.224304][    C2] RSP: 0018:ffa0000000218ed8 EFLAGS: 00000047
[ 9766.224307][    C2] RAX: 0000000000000001 RBX: 0000000000000002 RCX: 0000000000000001
[ 9766.224308][    C2] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffadc90e50
[ 9766.224309][    C2] RBP: dffffc0000000000 R08: ffffffffaa305eb4 R09: fffffbfff5b921ca
[ 9766.224310][    C2] R10: fffffbfff5b921cb R11: ffa0000000218ff8 R12: 0000000000000032
[ 9766.224311][    C2] R13: 0000000000000000 R14: ff11000002980400 R15: ff11000005e55580
[ 9766.224313][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9766.224316][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9766.224317][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9766.224318][    C2] PKRU: 55555554
[ 9766.224319][    C2] Call Trace:
[ 9766.224322][    C2]  <IRQ>
[ 9766.224326][    C2]  __handle_irq_event_percpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 kernel/irq/handle.c:208)
[ 9766.224329][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 9766.224331][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 9766.224333][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9766.224335][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9766.224337][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9766.224340][    C2]  </IRQ>
[ 9766.224341][    C2]  <TASK>
[ 9766.224341][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9766.224343][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9766.224346][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9766.224347][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9766.224348][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9766.224349][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9766.224349][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9766.224350][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9766.224351][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9766.224352][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9766.224355][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9766.224357][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9766.224359][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9766.224361][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9766.224363][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9766.224365][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9766.224368][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9766.224370][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9766.224373][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9766.224375][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9766.224377][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9766.224380][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9766.224382][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9766.224384][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9766.224386][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9766.224388][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9766.224390][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9766.224392][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9766.224394][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9766.224397][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9766.224398][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9766.224401][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9766.224404][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9766.224405][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9766.224408][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9766.224409][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9766.224410][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9766.224413][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9766.224414][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9766.224416][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9766.224418][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9766.224420][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9766.224422][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9766.224423][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9766.224425][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9766.224427][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9766.224428][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9766.224430][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9766.224432][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9766.224433][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9766.224436][    C2]  vfs_write (fs/read_write.c:686)
[ 9766.224438][    C2]  ksys_write (fs/read_write.c:739)
[ 9766.224440][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9766.224441][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9766.224444][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9766.224445][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9766.224447][    C2] RIP: 0033:0x7f814975fc5e
[ 9766.224449][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9766.224450][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9766.224451][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9766.224452][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9766.224453][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9766.224454][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9766.224454][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9792.207627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9792.207933][    C2] rcu: 2-....: (8836918 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3530659
| [ 9792.208198][    C2] rcu: (t=8840435 jiffies g=521497 q=175810 ncpus=4)
| [ 9792.208406][    C2] Tainted: [L]=SOFTLOCKUP
[ 9792.208407][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9792.208409][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9792.208413][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9792.208414][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9792.208417][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9792.208418][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9792.208419][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9792.208420][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9792.208421][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9792.208423][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9792.208426][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9792.208427][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9792.208428][    C2] PKRU: 55555554
[ 9792.208429][    C2] Call Trace:
[ 9792.208430][    C2]  <TASK>
[ 9792.208431][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9792.208433][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9792.208436][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9792.208438][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9792.208440][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9792.208442][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9792.208444][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9792.208447][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9792.208449][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9792.208451][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9792.208454][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9792.208456][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9792.208458][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9792.208460][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9792.208462][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9792.208464][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9792.208467][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9792.208468][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9792.208471][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9792.208473][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9792.208474][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9792.208477][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9792.208479][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9792.208481][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9792.208483][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9792.208485][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9792.208486][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9792.208492][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9792.208494][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9792.208495][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9792.208498][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9792.208499][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9792.208501][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9792.208503][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9792.208504][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9792.208506][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9792.208507][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9792.208509][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9792.208511][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9792.208512][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9792.208515][    C2]  vfs_write (fs/read_write.c:686)
[ 9792.208517][    C2]  ksys_write (fs/read_write.c:739)
[ 9792.208519][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9792.208521][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9792.208523][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9792.208524][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9792.208526][    C2] RIP: 0033:0x7f814975fc5e
[ 9792.208528][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9792.208529][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9792.208530][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9792.208531][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9792.208532][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9792.208533][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9792.208534][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9816.394760][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9816.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9816.394764][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9816.394771][    C2] Tainted: [L]=SOFTLOCKUP
[ 9816.394771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9816.394773][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9816.394776][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9816.394777][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9816.394779][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9816.394780][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9816.394781][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9816.394782][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9816.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9816.394785][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9816.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9816.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9816.394790][    C2] PKRU: 55555554
[ 9816.394791][    C2] Call Trace:
[ 9816.394794][    C2]  <TASK>
[ 9816.394798][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9816.394801][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9816.394803][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9816.394806][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9816.394808][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9816.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9816.394812][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9816.394815][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9816.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9816.394820][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9816.394822][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9816.394825][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9816.394827][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9816.394829][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9816.394831][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9816.394833][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9816.394836][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9816.394837][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9816.394840][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9816.394842][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9816.394844][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9816.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9816.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9816.394851][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9816.394853][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9816.394855][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9816.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9816.394858][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9816.394860][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9816.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9816.394864][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9816.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9816.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9816.394869][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9816.394870][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9816.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9816.394874][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9816.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9816.394877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9816.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9816.394882][    C2]  vfs_write (fs/read_write.c:686)
[ 9816.394884][    C2]  ksys_write (fs/read_write.c:739)
[ 9816.394886][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9816.394887][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9816.394890][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9816.394892][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9816.394894][    C2] RIP: 0033:0x7f814975fc5e
[ 9816.394896][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9816.394898][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9816.394899][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9816.394900][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9816.394901][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9816.394902][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9816.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9844.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9844.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9844.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9844.394769][    C2] Tainted: [L]=SOFTLOCKUP
[ 9844.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9844.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9844.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9844.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9844.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9844.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9844.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9844.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9844.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9844.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9844.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9844.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9844.394789][    C2] PKRU: 55555554
[ 9844.394789][    C2] Call Trace:
[ 9844.394793][    C2]  <TASK>
[ 9844.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9844.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9844.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9844.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9844.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9844.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9844.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9844.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9844.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9844.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9844.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9844.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9844.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9844.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9844.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9844.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9844.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9844.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9844.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9844.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9844.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9844.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9844.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9844.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9844.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9844.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9844.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9844.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9844.394857][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9844.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9844.394861][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9844.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9844.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9844.394866][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9844.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9844.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9844.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9844.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9844.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9844.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9844.394879][    C2]  vfs_write (fs/read_write.c:686)
[ 9844.394881][    C2]  ksys_write (fs/read_write.c:739)
[ 9844.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9844.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9844.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9844.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9844.394891][    C2] RIP: 0033:0x7f814975fc5e
[ 9844.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9844.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9844.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9844.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9844.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9844.394898][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9844.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9864.527975][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9864.528127][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9864.528282][    C2] NMI backtrace for cpu 2
| [ 9864.528292][    C2] Tainted: [L]=SOFTLOCKUP
[ 9864.528293][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9864.528295][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[ 9864.528298][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[ 9864.528300][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[ 9864.528302][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[ 9864.528304][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[ 9864.528305][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[ 9864.528306][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[ 9864.528307][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[ 9864.528310][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9864.528313][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9864.528314][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9864.528315][    C2] PKRU: 55555554
[ 9864.528316][    C2] Call Trace:
[ 9864.528319][    C2]  <IRQ>
[ 9864.528323][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[ 9864.528325][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[ 9864.528328][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[ 9864.528330][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[ 9864.528332][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9864.528334][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9864.528336][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9864.528339][    C2]  </IRQ>
[ 9864.528339][    C2]  <TASK>
[ 9864.528340][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9864.528342][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9864.528345][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9864.528346][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9864.528347][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9864.528348][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9864.528348][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9864.528349][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9864.528350][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9864.528351][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9864.528354][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9864.528356][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9864.528358][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9864.528360][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9864.528362][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9864.528364][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9864.528366][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9864.528369][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9864.528372][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9864.528373][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9864.528376][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9864.528378][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9864.528381][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9864.528382][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9864.528384][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9864.528387][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9864.528389][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9864.528391][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9864.528393][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9864.528395][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9864.528397][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9864.528400][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9864.528402][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9864.528404][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9864.528406][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9864.528407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9864.528408][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9864.528410][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9864.528412][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9864.528413][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9864.528416][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9864.528418][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9864.528419][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9864.528421][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9864.528422][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9864.528424][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9864.528426][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9864.528427][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9864.528429][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9864.528431][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9864.528433][    C2]  vfs_write (fs/read_write.c:686)
[ 9864.528435][    C2]  ksys_write (fs/read_write.c:739)
[ 9864.528437][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9864.528439][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9864.528441][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9864.528443][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9864.528444][    C2] RIP: 0033:0x7f814975fc5e
[ 9864.528446][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9864.528447][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9864.528448][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9864.528449][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9864.528450][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9864.528451][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9864.528451][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9870.211625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9870.211894][    C2] rcu: 2-....: (8914889 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3568957
| [ 9870.212162][    C2] rcu: (t=8918439 jiffies g=521497 q=177401 ncpus=4)
| [ 9870.212295][    C2] Tainted: [L]=SOFTLOCKUP
[ 9870.212296][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9870.212297][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9870.212302][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9870.212303][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9870.212305][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9870.212306][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9870.212307][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9870.212308][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9870.212309][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9870.212311][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9870.212314][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9870.212315][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9870.212316][    C2] PKRU: 55555554
[ 9870.212316][    C2] Call Trace:
[ 9870.212317][    C2]  <TASK>
[ 9870.212318][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9870.212320][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9870.212323][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9870.212325][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9870.212327][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9870.212329][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9870.212331][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9870.212334][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9870.212336][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9870.212338][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9870.212341][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9870.212343][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9870.212345][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9870.212347][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9870.212349][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9870.212351][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9870.212354][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9870.212355][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9870.212358][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9870.212360][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9870.212361][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9870.212364][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9870.212366][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9870.212368][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9870.212370][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9870.212372][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9870.212373][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9870.212375][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9870.212377][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9870.212378][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9870.212381][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9870.212382][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9870.212384][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9870.212386][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9870.212387][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9870.212389][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9870.212390][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9870.212392][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9870.212394][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9870.212395][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9870.212398][    C2]  vfs_write (fs/read_write.c:686)
[ 9870.212400][    C2]  ksys_write (fs/read_write.c:739)
[ 9870.212401][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9870.212403][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9870.212405][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9870.212407][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9870.212408][    C2] RIP: 0033:0x7f814975fc5e
[ 9870.212410][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9870.212411][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9870.212413][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9870.212414][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9870.212414][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9870.212415][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9870.212416][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9896.394762][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9896.394764][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9896.394766][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9896.394773][    C2] Tainted: [L]=SOFTLOCKUP
[ 9896.394774][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9896.394775][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9896.394778][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9896.394779][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9896.394781][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9896.394782][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9896.394783][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9896.394784][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9896.394785][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9896.394787][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9896.394791][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9896.394792][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9896.394793][    C2] PKRU: 55555554
[ 9896.394793][    C2] Call Trace:
[ 9896.394797][    C2]  <TASK>
[ 9896.394799][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9896.394802][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9896.394804][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9896.394806][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9896.394809][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9896.394810][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9896.394813][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9896.394815][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9896.394818][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9896.394820][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9896.394823][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9896.394826][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9896.394828][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9896.394830][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9896.394832][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9896.394834][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9896.394836][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9896.394838][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9896.394840][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9896.394842][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9896.394844][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9896.394847][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9896.394849][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9896.394851][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9896.394853][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9896.394855][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9896.394856][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9896.394858][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9896.394860][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9896.394861][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9896.394864][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9896.394865][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9896.394867][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9896.394869][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9896.394871][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9896.394872][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9896.394874][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9896.394876][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9896.394877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9896.394879][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9896.394881][    C2]  vfs_write (fs/read_write.c:686)
[ 9896.394883][    C2]  ksys_write (fs/read_write.c:739)
[ 9896.394885][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9896.394887][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9896.394889][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9896.394891][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9896.394893][    C2] RIP: 0033:0x7f814975fc5e
[ 9896.394895][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9896.394897][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9896.394898][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9896.394899][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9896.394900][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9896.394900][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9896.394901][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9924.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9924.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9924.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9924.394768][    C2] Tainted: [L]=SOFTLOCKUP
[ 9924.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9924.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9924.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9924.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9924.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9924.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9924.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9924.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9924.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9924.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9924.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9924.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9924.394787][    C2] PKRU: 55555554
[ 9924.394788][    C2] Call Trace:
[ 9924.394791][    C2]  <TASK>
[ 9924.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9924.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9924.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9924.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9924.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9924.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9924.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9924.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9924.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9924.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9924.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9924.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9924.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9924.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9924.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9924.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9924.394831][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9924.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9924.394835][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9924.394837][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9924.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9924.394842][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9924.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9924.394846][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9924.394848][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9924.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9924.394851][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9924.394853][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9924.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9924.394856][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9924.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9924.394860][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9924.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9924.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9924.394865][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9924.394867][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9924.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9924.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9924.394872][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9924.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9924.394876][    C2]  vfs_write (fs/read_write.c:686)
[ 9924.394878][    C2]  ksys_write (fs/read_write.c:739)
[ 9924.394880][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9924.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9924.394884][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9924.394886][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9924.394888][    C2] RIP: 0033:0x7f814975fc5e
[ 9924.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9924.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9924.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9924.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9924.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9924.394895][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9924.394896][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9948.215626][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [ 9948.215861][    C2] rcu: 2-....: (8992868 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3600723
| [ 9948.216170][    C2] rcu: (t=8996443 jiffies g=521497 q=178538 ncpus=4)
| [ 9948.216308][    C2] Tainted: [L]=SOFTLOCKUP
[ 9948.216309][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9948.216311][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9948.216315][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9948.216316][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9948.216319][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9948.216320][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9948.216321][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9948.216322][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9948.216323][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9948.216325][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9948.216328][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9948.216330][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9948.216331][    C2] PKRU: 55555554
[ 9948.216331][    C2] Call Trace:
[ 9948.216332][    C2]  <TASK>
[ 9948.216333][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9948.216336][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9948.216338][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9948.216340][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9948.216343][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9948.216344][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9948.216347][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9948.216349][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9948.216352][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9948.216354][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9948.216356][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9948.216359][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9948.216361][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9948.216363][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9948.216365][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9948.216367][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9948.216369][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9948.216371][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9948.216373][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9948.216375][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9948.216377][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9948.216380][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9948.216382][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9948.216384][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9948.216386][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9948.216388][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9948.216389][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9948.216391][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9948.216393][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9948.216394][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9948.216397][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9948.216398][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9948.216400][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9948.216402][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9948.216403][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9948.216405][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9948.216406][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9948.216408][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9948.216410][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9948.216411][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9948.216414][    C2]  vfs_write (fs/read_write.c:686)
[ 9948.216416][    C2]  ksys_write (fs/read_write.c:739)
[ 9948.216418][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9948.216420][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9948.216422][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9948.216424][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9948.216425][    C2] RIP: 0033:0x7f814975fc5e
[ 9948.216427][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9948.216429][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9948.216430][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9948.216431][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9948.216432][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9948.216433][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9948.216433][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9962.833003][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [ 9962.833124][   T17] Sending NMI from CPU 3 to CPUs 2:
| [ 9962.833267][    C2] NMI backtrace for cpu 2
| [ 9962.833277][    C2] Tainted: [L]=SOFTLOCKUP
[ 9962.833278][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9962.833280][    C2] RIP: 0010:native_apic_msr_read (./arch/x86/include/asm/msr.h:75 ./arch/x86/include/asm/msr.h:108 ./arch/x86/include/asm/apic.h:227)
[ 9962.833284][    C2] Code: 08 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 ff ff ff ff 81 ff e0 00 00 00 74 15 c1 ef 04 8d 8f 00 08 00 00 0f 32 <48> c1 e2 20 48 09 d0 66 90 c3 c3 48 83 ec 08 48 89 c6 31 d2 89 cf
All code
========
   0:	08 00                	or     %al,(%rax)
   2:	00 66 66             	add    %ah,0x66(%rsi)
   5:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   c:	00 00 
   e:	f3 0f 1e fa          	endbr64
  12:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  17:	81 ff e0 00 00 00    	cmp    $0xe0,%edi
  1d:	74 15                	je     0x34
  1f:	c1 ef 04             	shr    $0x4,%edi
  22:	8d 8f 00 08 00 00    	lea    0x800(%rdi),%ecx
  28:	0f 32                	rdmsr
  2a:*	48 c1 e2 20          	shl    $0x20,%rdx		<-- trapping instruction
  2e:	48 09 d0             	or     %rdx,%rax
  31:	66 90                	xchg   %ax,%ax
  33:	c3                   	ret
  34:	c3                   	ret
  35:	48 83 ec 08          	sub    $0x8,%rsp
  39:	48 89 c6             	mov    %rax,%rsi
  3c:	31 d2                	xor    %edx,%edx
  3e:	89 cf                	mov    %ecx,%edi

Code starting with the faulting instruction
===========================================
   0:	48 c1 e2 20          	shl    $0x20,%rdx
   4:	48 09 d0             	or     %rdx,%rax
   7:	66 90                	xchg   %ax,%ax
   9:	c3                   	ret
   a:	c3                   	ret
   b:	48 83 ec 08          	sub    $0x8,%rsp
   f:	48 89 c6             	mov    %rax,%rsi
  12:	31 d2                	xor    %edx,%edx
  14:	89 cf                	mov    %ecx,%edi
[ 9962.833285][    C2] RSP: 0018:ffa0000000218f30 EFLAGS: 00000012
[ 9962.833288][    C2] RAX: 0000000000000001 RBX: ff11000002980428 RCX: 0000000000000819
[ 9962.833289][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000019
[ 9962.833290][    C2] RBP: ff11000002980438 R08: ffffffffaa2da398 R09: fff3fc00000431df
[ 9962.833291][    C2] R10: 0000000000000003 R11: 1fe2200006a6666a R12: ff110000027b3040
[ 9962.833292][    C2] R13: 0000000000000000 R14: ff110000027b3044 R15: 0000000000000020
[ 9962.833294][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9962.833297][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9962.833298][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9962.833299][    C2] PKRU: 55555554
[ 9962.833300][    C2] Call Trace:
[ 9962.833302][    C2]  <IRQ>
[ 9962.833303][    C2]  ioapic_ack_level (./arch/x86/include/asm/apic.h:404 arch/x86/kernel/apic/io_apic.c:1700)
[ 9962.833307][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:771)
[ 9962.833310][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[ 9962.833312][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[ 9962.833314][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[ 9962.833317][    C2]  </IRQ>
[ 9962.833317][    C2]  <TASK>
[ 9962.833318][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[ 9962.833320][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9962.833322][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9962.833323][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9962.833324][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9962.833325][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9962.833326][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9962.833327][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9962.833327][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9962.833329][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[ 9962.833332][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9962.833334][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9962.833336][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9962.833338][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9962.833340][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9962.833342][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9962.833344][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9962.833347][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9962.833350][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9962.833352][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9962.833354][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9962.833357][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9962.833359][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9962.833360][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9962.833362][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9962.833364][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9962.833367][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9962.833369][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9962.833371][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9962.833373][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9962.833375][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9962.833378][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9962.833380][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9962.833382][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9962.833384][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9962.833385][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9962.833387][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9962.833389][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9962.833390][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9962.833392][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9962.833394][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9962.833396][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9962.833397][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9962.833399][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9962.833401][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9962.833402][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9962.833404][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9962.833406][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9962.833407][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9962.833409][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9962.833411][    C2]  vfs_write (fs/read_write.c:686)
[ 9962.833414][    C2]  ksys_write (fs/read_write.c:739)
[ 9962.833416][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9962.833417][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9962.833420][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9962.833421][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9962.833423][    C2] RIP: 0033:0x7f814975fc5e
[ 9962.833425][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9962.833426][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9962.833427][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9962.833428][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9962.833429][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9962.833430][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9962.833431][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [ 9988.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [ 9988.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [ 9988.394771][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [ 9988.394777][    C2] Tainted: [L]=SOFTLOCKUP
[ 9988.394778][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9988.394780][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[ 9988.394783][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[ 9988.394785][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[ 9988.394786][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[ 9988.394788][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[ 9988.394788][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[ 9988.394789][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[ 9988.394790][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[ 9988.394793][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[ 9988.394796][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9988.394797][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[ 9988.394798][    C2] PKRU: 55555554
[ 9988.394799][    C2] Call Trace:
[ 9988.394802][    C2]  <TASK>
[ 9988.394806][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[ 9988.394808][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[ 9988.394811][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[ 9988.394813][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[ 9988.394815][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[ 9988.394817][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9988.394820][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[ 9988.394822][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[ 9988.394825][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[ 9988.394827][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[ 9988.394829][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[ 9988.394832][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[ 9988.394834][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[ 9988.394836][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[ 9988.394838][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[ 9988.394840][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[ 9988.394843][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[ 9988.394844][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9988.394847][    C2]  ? release_sock (net/core/sock.c:3794)
[ 9988.394849][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[ 9988.394850][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[ 9988.394854][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9988.394856][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[ 9988.394858][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[ 9988.394860][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[ 9988.394861][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9988.394863][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[ 9988.394865][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[ 9988.394867][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[ 9988.394868][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9988.394871][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[ 9988.394872][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[ 9988.394874][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[ 9988.394876][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[ 9988.394877][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[ 9988.394879][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[ 9988.394881][    C2]  ? new_sync_read (fs/read_write.c:584)
[ 9988.394883][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[ 9988.394884][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 9988.394886][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[ 9988.394888][    C2]  vfs_write (fs/read_write.c:686)
[ 9988.394890][    C2]  ksys_write (fs/read_write.c:739)
[ 9988.394892][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[ 9988.394894][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[ 9988.394896][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 9988.394898][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 9988.394900][    C2] RIP: 0033:0x7f814975fc5e
[ 9988.394902][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 9988.394903][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 9988.394905][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[ 9988.394906][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[ 9988.394907][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[ 9988.394907][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[ 9988.394908][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10016.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10016.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10016.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10016.394769][    C2] Tainted: [L]=SOFTLOCKUP
[10016.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10016.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10016.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10016.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10016.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10016.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10016.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10016.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10016.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10016.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10016.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10016.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10016.394789][    C2] PKRU: 55555554
[10016.394789][    C2] Call Trace:
[10016.394792][    C2]  <TASK>
[10016.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10016.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10016.394800][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10016.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10016.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10016.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10016.394809][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10016.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10016.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10016.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10016.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10016.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10016.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10016.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10016.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10016.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10016.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10016.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10016.394837][    C2]  ? release_sock (net/core/sock.c:3794)
[10016.394839][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10016.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10016.394844][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10016.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10016.394848][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10016.394850][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10016.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10016.394853][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10016.394855][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10016.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10016.394858][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10016.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10016.394862][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10016.394864][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10016.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10016.394867][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10016.394869][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10016.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[10016.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10016.394874][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10016.394876][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10016.394878][    C2]  vfs_write (fs/read_write.c:686)
[10016.394880][    C2]  ksys_write (fs/read_write.c:739)
[10016.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10016.394884][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10016.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10016.394888][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10016.394890][    C2] RIP: 0033:0x7f814975fc5e
[10016.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10016.394894][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10016.394895][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10016.394896][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10016.394897][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10016.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10016.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10026.219624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [10026.219833][    C2] rcu: 2-....: (9070839 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3629997
| [10026.220134][    C2] rcu: (t=9074447 jiffies g=521497 q=180125 ncpus=4)
| [10026.220269][    C2] Tainted: [L]=SOFTLOCKUP
[10026.220270][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10026.220271][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10026.220275][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10026.220277][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10026.220279][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10026.220280][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10026.220281][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10026.220282][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10026.220283][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10026.220285][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10026.220288][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10026.220289][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10026.220290][    C2] PKRU: 55555554
[10026.220291][    C2] Call Trace:
[10026.220291][    C2]  <TASK>
[10026.220292][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10026.220295][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10026.220297][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10026.220300][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10026.220302][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10026.220304][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10026.220306][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10026.220308][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10026.220311][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10026.220313][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10026.220315][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10026.220318][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10026.220320][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10026.220322][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10026.220324][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10026.220326][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10026.220329][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10026.220330][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10026.220333][    C2]  ? release_sock (net/core/sock.c:3794)
[10026.220335][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10026.220336][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10026.220339][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10026.220342][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10026.220344][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10026.220346][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10026.220347][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10026.220349][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10026.220351][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10026.220352][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10026.220354][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10026.220356][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10026.220358][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10026.220359][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10026.220361][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10026.220363][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10026.220364][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10026.220366][    C2]  ? new_sync_read (fs/read_write.c:584)
[10026.220368][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10026.220370][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10026.220371][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10026.220374][    C2]  vfs_write (fs/read_write.c:686)
[10026.220376][    C2]  ksys_write (fs/read_write.c:739)
[10026.220377][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10026.220379][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10026.220382][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10026.220383][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10026.220385][    C2] RIP: 0033:0x7f814975fc5e
[10026.220387][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10026.220388][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10026.220389][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10026.220390][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10026.220391][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10026.220392][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10026.220392][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10052.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10052.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10052.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10052.394770][    C2] Tainted: [L]=SOFTLOCKUP
[10052.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10052.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10052.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10052.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10052.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10052.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10052.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10052.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10052.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10052.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10052.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10052.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10052.394790][    C2] PKRU: 55555554
[10052.394790][    C2] Call Trace:
[10052.394794][    C2]  <TASK>
[10052.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10052.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10052.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10052.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10052.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10052.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10052.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10052.394813][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10052.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10052.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10052.394820][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10052.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10052.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10052.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10052.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10052.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10052.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10052.394835][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10052.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[10052.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10052.394841][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10052.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10052.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10052.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10052.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10052.394852][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10052.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10052.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10052.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10052.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10052.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10052.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10052.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10052.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10052.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10052.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10052.394871][    C2]  ? new_sync_read (fs/read_write.c:584)
[10052.394873][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10052.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10052.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10052.394879][    C2]  vfs_write (fs/read_write.c:686)
[10052.394881][    C2]  ksys_write (fs/read_write.c:739)
[10052.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10052.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10052.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10052.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10052.394891][    C2] RIP: 0033:0x7f814975fc5e
[10052.394893][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10052.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10052.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10052.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10052.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10052.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10052.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10061.136043][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [10061.136191][   T17] Sending NMI from CPU 3 to CPUs 2:
| [10061.136306][    C2] NMI backtrace for cpu 2
| [10061.136316][    C2] Tainted: [L]=SOFTLOCKUP
[10061.136317][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10061.136319][    C2] RIP: 0010:irq_entries_start (./arch/x86/include/asm/idtentry.h:551)
[10061.136322][    C2] Code: c9 45 31 c0 45 31 c9 45 31 d2 45 31 db 31 db 31 ed 45 31 e4 45 31 ed 45 31 f6 45 31 ff c3 90 66 66 2e 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 6a 20 e9 b5 11 00 00 cc cc cc cc cc f3 0f 1e fa 6a 21
All code
========
   0:	c9                   	leave
   1:	45 31 c0             	xor    %r8d,%r8d
   4:	45 31 c9             	xor    %r9d,%r9d
   7:	45 31 d2             	xor    %r10d,%r10d
   a:	45 31 db             	xor    %r11d,%r11d
   d:	31 db                	xor    %ebx,%ebx
   f:	31 ed                	xor    %ebp,%ebp
  11:	45 31 e4             	xor    %r12d,%r12d
  14:	45 31 ed             	xor    %r13d,%r13d
  17:	45 31 f6             	xor    %r14d,%r14d
  1a:	45 31 ff             	xor    %r15d,%r15d
  1d:	c3                   	ret
  1e:	90                   	nop
  1f:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  26:	00 00 00 00 
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	6a 20                	push   $0x20
  30:	e9 b5 11 00 00       	jmp    0x11ea
  35:	cc                   	int3
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	f3 0f 1e fa          	endbr64
  3e:	6a 21                	push   $0x21

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	6a 20                	push   $0x20
   6:	e9 b5 11 00 00       	jmp    0x11c0
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	f3 0f 1e fa          	endbr64
  14:	6a 21                	push   $0x21
[10061.136324][    C2] RSP: 0018:ffa0000000617558 EFLAGS: 00000002
[10061.136326][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10061.136327][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10061.136328][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10061.136329][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10061.136329][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10061.136332][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10061.136335][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10061.136336][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10061.136337][    C2] PKRU: 55555554
[10061.136338][    C2] Call Trace:
[10061.136341][    C2]  <TASK>
[10061.136342][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10061.136344][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10061.136345][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10061.136350][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10061.136352][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10061.136354][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10061.136357][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10061.136359][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10061.136361][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10061.136363][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10061.136365][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10061.136368][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10061.136370][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10061.136372][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10061.136375][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10061.136377][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10061.136379][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10061.136381][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10061.136383][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10061.136385][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10061.136387][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10061.136389][    C2]  ? release_sock (net/core/sock.c:3794)
[10061.136391][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10061.136393][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10061.136396][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10061.136398][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10061.136400][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10061.136401][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10061.136403][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10061.136404][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10061.136406][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10061.136408][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10061.136409][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10061.136412][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10061.136413][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10061.136415][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10061.136417][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10061.136418][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10061.136420][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10061.136422][    C2]  ? new_sync_read (fs/read_write.c:584)
[10061.136423][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10061.136425][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10061.136426][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10061.136429][    C2]  vfs_write (fs/read_write.c:686)
[10061.136431][    C2]  ksys_write (fs/read_write.c:739)
[10061.136433][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10061.136434][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10061.136437][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10061.136438][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10061.136440][    C2] RIP: 0033:0x7f814975fc5e
[10061.136442][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10061.136443][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10061.136444][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10061.136445][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10061.136446][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10061.136447][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10061.136448][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10088.394766][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10088.394768][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10088.394770][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10088.394776][    C2] Tainted: [L]=SOFTLOCKUP
[10088.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10088.394779][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10088.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10088.394783][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10088.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10088.394786][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10088.394787][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10088.394788][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10088.394788][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10088.394791][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10088.394794][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10088.394795][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10088.394796][    C2] PKRU: 55555554
[10088.394797][    C2] Call Trace:
[10088.394800][    C2]  <TASK>
[10088.394803][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10088.394805][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10088.394807][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10088.394810][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10088.394812][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10088.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10088.394816][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10088.394819][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10088.394822][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10088.394823][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10088.394826][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10088.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10088.394831][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10088.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10088.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10088.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10088.394839][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10088.394841][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10088.394843][    C2]  ? release_sock (net/core/sock.c:3794)
[10088.394845][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10088.394847][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10088.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10088.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10088.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10088.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10088.394858][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10088.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10088.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10088.394863][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10088.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10088.394867][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10088.394869][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10088.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10088.394872][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10088.394874][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10088.394876][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10088.394877][    C2]  ? new_sync_read (fs/read_write.c:584)
[10088.394879][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10088.394881][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10088.394882][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10088.394885][    C2]  vfs_write (fs/read_write.c:686)
[10088.394887][    C2]  ksys_write (fs/read_write.c:739)
[10088.394889][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10088.394890][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10088.394893][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10088.394894][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10088.394896][    C2] RIP: 0033:0x7f814975fc5e
[10088.394899][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10088.394900][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10088.394901][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10088.394902][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10088.394903][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10088.394904][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10088.394904][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10104.223625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [10104.223848][    C2] rcu: 2-....: (9148810 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3663769
| [10104.224144][    C2] rcu: (t=9152451 jiffies g=521497 q=181645 ncpus=4)
| [10104.224278][    C2] Tainted: [L]=SOFTLOCKUP
[10104.224279][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10104.224280][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10104.224285][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10104.224286][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10104.224288][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10104.224289][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10104.224290][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10104.224291][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10104.224292][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10104.224294][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10104.224297][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10104.224298][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10104.224299][    C2] PKRU: 55555554
[10104.224300][    C2] Call Trace:
[10104.224301][    C2]  <TASK>
[10104.224302][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10104.224304][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10104.224306][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10104.224309][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10104.224311][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10104.224313][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10104.224315][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10104.224317][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10104.224321][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10104.224322][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10104.224325][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10104.224327][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10104.224329][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10104.224331][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10104.224333][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10104.224335][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10104.224338][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10104.224340][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10104.224342][    C2]  ? release_sock (net/core/sock.c:3794)
[10104.224344][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10104.224345][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10104.224348][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10104.224350][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10104.224352][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10104.224354][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10104.224355][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10104.224357][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10104.224359][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10104.224360][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10104.224362][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10104.224364][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10104.224366][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10104.224368][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10104.224369][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10104.224371][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10104.224373][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10104.224374][    C2]  ? new_sync_read (fs/read_write.c:584)
[10104.224376][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10104.224378][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10104.224379][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10104.224382][    C2]  vfs_write (fs/read_write.c:686)
[10104.224384][    C2]  ksys_write (fs/read_write.c:739)
[10104.224385][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10104.224387][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10104.224389][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10104.224391][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10104.224392][    C2] RIP: 0033:0x7f814975fc5e
[10104.224395][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10104.224396][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10104.224397][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10104.224398][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10104.224399][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10104.224400][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10104.224400][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10128.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10128.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10128.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10128.394769][    C2] Tainted: [L]=SOFTLOCKUP
[10128.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10128.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10128.394775][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10128.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10128.394778][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10128.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10128.394780][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10128.394781][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10128.394782][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10128.394784][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10128.394788][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10128.394789][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10128.394790][    C2] PKRU: 55555554
[10128.394790][    C2] Call Trace:
[10128.394794][    C2]  <TASK>
[10128.394797][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10128.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10128.394802][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10128.394804][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10128.394806][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10128.394808][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10128.394811][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10128.394814][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10128.394816][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10128.394818][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10128.394821][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10128.394823][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10128.394825][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10128.394827][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10128.394829][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10128.394831][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10128.394834][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10128.394836][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10128.394838][    C2]  ? release_sock (net/core/sock.c:3794)
[10128.394840][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10128.394842][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10128.394845][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10128.394847][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10128.394849][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10128.394851][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10128.394853][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10128.394854][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10128.394856][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10128.394858][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10128.394859][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10128.394862][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10128.394863][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10128.394865][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10128.394867][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10128.394868][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10128.394870][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10128.394872][    C2]  ? new_sync_read (fs/read_write.c:584)
[10128.394874][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10128.394875][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10128.394877][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10128.394879][    C2]  vfs_write (fs/read_write.c:686)
[10128.394881][    C2]  ksys_write (fs/read_write.c:739)
[10128.394883][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10128.394885][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10128.394887][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10128.394889][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10128.394891][    C2] RIP: 0033:0x7f814975fc5e
[10128.394894][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10128.394895][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10128.394896][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10128.394897][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10128.394898][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10128.394899][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10128.394899][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10156.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10156.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10156.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10156.394769][    C2] Tainted: [L]=SOFTLOCKUP
[10156.394769][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10156.394771][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10156.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10156.394775][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10156.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10156.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10156.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10156.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10156.394780][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10156.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10156.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10156.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10156.394788][    C2] PKRU: 55555554
[10156.394788][    C2] Call Trace:
[10156.394791][    C2]  <TASK>
[10156.394794][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10156.394796][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10156.394798][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10156.394801][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10156.394803][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10156.394805][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10156.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10156.394810][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10156.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10156.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10156.394817][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10156.394820][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10156.394822][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10156.394823][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10156.394826][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10156.394828][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10156.394830][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10156.394832][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10156.394834][    C2]  ? release_sock (net/core/sock.c:3794)
[10156.394836][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10156.394838][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10156.394841][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10156.394844][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10156.394845][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10156.394847][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10156.394849][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10156.394850][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10156.394852][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10156.394854][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10156.394855][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10156.394858][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10156.394859][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10156.394861][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10156.394863][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10156.394864][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10156.394866][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10156.394868][    C2]  ? new_sync_read (fs/read_write.c:584)
[10156.394869][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10156.394871][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10156.394872][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10156.394875][    C2]  vfs_write (fs/read_write.c:686)
[10156.394877][    C2]  ksys_write (fs/read_write.c:739)
[10156.394879][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10156.394881][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10156.394883][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10156.394885][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10156.394886][    C2] RIP: 0033:0x7f814975fc5e
[10156.394889][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10156.394890][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10156.394891][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10156.394892][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10156.394893][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10156.394894][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10156.394895][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10159.441044][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [10159.441209][   T17] Sending NMI from CPU 3 to CPUs 2:
| [10159.441321][    C2] NMI backtrace for cpu 2
| [10159.441330][    C2] Tainted: [L]=SOFTLOCKUP
[10159.441331][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10159.441332][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:294)
[10159.441335][    C2] Code: 48 8d be 40 05 00 00 41 54 48 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 <48> 8b 86 40 05 00 00 89 58 64 89 dd 83 e5 02 75 6b 83 e3 01 74 57
All code
========
   0:	48 8d be 40 05 00 00 	lea    0x540(%rsi),%rdi
   7:	41 54                	push   %r12
   9:	48 89 fa             	mov    %rdi,%rdx
   c:	55                   	push   %rbp
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	53                   	push   %rbx
  12:	48 83 ec 08          	sub    $0x8,%rsp
  16:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1a:	0f 85 aa 00 00 00    	jne    0xca
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	8b 58 60             	mov    0x60(%rax),%ebx
  2a:*	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax		<-- trapping instruction
  31:	89 58 64             	mov    %ebx,0x64(%rax)
  34:	89 dd                	mov    %ebx,%ebp
  36:	83 e5 02             	and    $0x2,%ebp
  39:	75 6b                	jne    0xa6
  3b:	83 e3 01             	and    $0x1,%ebx
  3e:	74 57                	je     0x97

Code starting with the faulting instruction
===========================================
   0:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
   7:	89 58 64             	mov    %ebx,0x64(%rax)
   a:	89 dd                	mov    %ebx,%ebp
   c:	83 e5 02             	and    $0x2,%ebp
   f:	75 6b                	jne    0x7c
  11:	83 e3 01             	and    $0x1,%ebx
  14:	74 57                	je     0x6d
[10159.441337][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[10159.441339][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[10159.441340][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[10159.441341][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[10159.441342][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[10159.441343][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[10159.441345][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10159.441348][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10159.441349][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10159.441350][    C2] PKRU: 55555554
[10159.441351][    C2] Call Trace:
[10159.441353][    C2]  <IRQ>
[10159.441355][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[10159.441357][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[10159.441360][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[10159.441362][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[10159.441364][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[10159.441366][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[10159.441369][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[10159.441371][    C2]  </IRQ>
[10159.441372][    C2]  <TASK>
[10159.441373][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[10159.441375][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10159.441377][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10159.441378][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10159.441379][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10159.441380][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10159.441380][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10159.441381][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10159.441382][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10159.441383][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[10159.441386][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10159.441388][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10159.441390][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10159.441392][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10159.441394][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10159.441396][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10159.441398][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10159.441401][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10159.441403][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10159.441405][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10159.441407][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10159.441410][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10159.441412][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10159.441414][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10159.441416][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10159.441418][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10159.441420][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10159.441422][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10159.441424][    C2]  ? release_sock (net/core/sock.c:3794)
[10159.441426][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10159.441428][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10159.441431][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10159.441433][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10159.441435][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10159.441437][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10159.441438][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10159.441440][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10159.441441][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10159.441443][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10159.441444][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10159.441447][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10159.441448][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10159.441450][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10159.441452][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10159.441453][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10159.441455][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10159.441457][    C2]  ? new_sync_read (fs/read_write.c:584)
[10159.441459][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10159.441460][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10159.441462][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10159.441464][    C2]  vfs_write (fs/read_write.c:686)
[10159.441466][    C2]  ksys_write (fs/read_write.c:739)
[10159.441468][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10159.441470][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10159.441472][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10159.441474][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10159.441475][    C2] RIP: 0033:0x7f814975fc5e
[10159.441477][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10159.441478][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10159.441479][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10159.441480][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10159.441481][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10159.441481][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10159.441482][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10182.227627][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [10182.227886][    C2] rcu: 2-....: (9226781 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3694795
| [10182.228188][    C2] rcu: (t=9230455 jiffies g=521497 q=183236 ncpus=4)
| [10182.228336][    C2] Tainted: [L]=SOFTLOCKUP
[10182.228337][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10182.228339][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10182.228343][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10182.228345][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10182.228348][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10182.228349][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10182.228350][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10182.228351][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10182.228351][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10182.228354][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10182.228357][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10182.228358][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10182.228359][    C2] PKRU: 55555554
[10182.228360][    C2] Call Trace:
[10182.228361][    C2]  <TASK>
[10182.228362][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10182.228364][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10182.228367][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10182.228369][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10182.228371][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10182.228373][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10182.228376][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10182.228378][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10182.228381][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10182.228382][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10182.228385][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10182.228387][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10182.228389][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10182.228391][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10182.228393][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10182.228395][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10182.228398][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10182.228400][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10182.228402][    C2]  ? release_sock (net/core/sock.c:3794)
[10182.228404][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10182.228405][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10182.228408][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10182.228410][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10182.228412][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10182.228414][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10182.228416][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10182.228417][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10182.228419][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10182.228421][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10182.228422][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10182.228425][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10182.228426][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10182.228428][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10182.228430][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10182.228431][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10182.228433][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10182.228435][    C2]  ? new_sync_read (fs/read_write.c:584)
[10182.228436][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10182.228438][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10182.228439][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10182.228442][    C2]  vfs_write (fs/read_write.c:686)
[10182.228444][    C2]  ksys_write (fs/read_write.c:739)
[10182.228446][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10182.228448][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10182.228450][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10182.228451][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10182.228453][    C2] RIP: 0033:0x7f814975fc5e
[10182.228455][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10182.228456][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10182.228458][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10182.228459][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10182.228460][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10182.228460][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10182.228461][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10208.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10208.394761][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10208.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10208.394770][    C2] Tainted: [L]=SOFTLOCKUP
[10208.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10208.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10208.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10208.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10208.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10208.394779][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10208.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10208.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10208.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10208.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10208.394787][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10208.394788][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10208.394789][    C2] PKRU: 55555554
[10208.394789][    C2] Call Trace:
[10208.394793][    C2]  <TASK>
[10208.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10208.394798][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10208.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10208.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10208.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10208.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10208.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10208.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10208.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10208.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10208.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10208.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10208.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10208.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10208.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10208.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10208.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10208.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10208.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[10208.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10208.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10208.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10208.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10208.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10208.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10208.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10208.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10208.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10208.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10208.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10208.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10208.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10208.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10208.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10208.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10208.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10208.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[10208.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10208.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10208.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10208.394877][    C2]  vfs_write (fs/read_write.c:686)
[10208.394879][    C2]  ksys_write (fs/read_write.c:739)
[10208.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10208.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10208.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10208.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10208.394889][    C2] RIP: 0033:0x7f814975fc5e
[10208.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10208.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10208.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10208.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10208.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10208.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10208.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10236.394758][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10236.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10236.394762][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10236.394768][    C2] Tainted: [L]=SOFTLOCKUP
[10236.394768][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10236.394770][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10236.394773][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10236.394774][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10236.394776][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10236.394777][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10236.394778][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10236.394779][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10236.394779][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10236.394782][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10236.394785][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10236.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10236.394787][    C2] PKRU: 55555554
[10236.394788][    C2] Call Trace:
[10236.394791][    C2]  <TASK>
[10236.394795][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10236.394797][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10236.394799][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10236.394802][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10236.394804][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10236.394806][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10236.394808][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10236.394811][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10236.394814][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10236.394815][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10236.394818][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10236.394821][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10236.394823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10236.394824][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10236.394827][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10236.394829][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10236.394832][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10236.394833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10236.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[10236.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10236.394839][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10236.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10236.394845][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10236.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10236.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10236.394850][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10236.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10236.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10236.394855][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10236.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10236.394859][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10236.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10236.394862][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10236.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10236.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10236.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10236.394869][    C2]  ? new_sync_read (fs/read_write.c:584)
[10236.394871][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10236.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10236.394874][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10236.394877][    C2]  vfs_write (fs/read_write.c:686)
[10236.394879][    C2]  ksys_write (fs/read_write.c:739)
[10236.394881][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10236.394882][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10236.394885][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10236.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10236.394889][    C2] RIP: 0033:0x7f814975fc5e
[10236.394891][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10236.394892][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10236.394893][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10236.394894][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10236.394895][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10236.394896][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10236.394897][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10257.744031][   T17] rcu: blocking rcu_node structures (internal RCU debug):
| [10257.744147][   T17] Sending NMI from CPU 3 to CPUs 2:
| [10257.744251][    C2] NMI backtrace for cpu 2
| [10257.744261][    C2] Tainted: [L]=SOFTLOCKUP
[10257.744262][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10257.744263][    C2] RIP: 0010:vm_interrupt (drivers/virtio/virtio_mmio.c:296 (discriminator 1))
[10257.744267][    C2] Code: 89 fa 55 48 c1 ea 03 53 48 83 ec 08 80 3c 02 00 0f 85 aa 00 00 00 48 8b 86 40 05 00 00 8b 58 60 48 8b 86 40 05 00 00 89 58 64 <89> dd 83 e5 02 75 6b 83 e3 01 74 57 4c 8d a6 08 05 00 00 48 b8 00
All code
========
   0:	89 fa                	mov    %edi,%edx
   2:	55                   	push   %rbp
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	53                   	push   %rbx
   8:	48 83 ec 08          	sub    $0x8,%rsp
   c:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  10:	0f 85 aa 00 00 00    	jne    0xc0
  16:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  1d:	8b 58 60             	mov    0x60(%rax),%ebx
  20:	48 8b 86 40 05 00 00 	mov    0x540(%rsi),%rax
  27:	89 58 64             	mov    %ebx,0x64(%rax)
  2a:*	89 dd                	mov    %ebx,%ebp		<-- trapping instruction
  2c:	83 e5 02             	and    $0x2,%ebp
  2f:	75 6b                	jne    0x9c
  31:	83 e3 01             	and    $0x1,%ebx
  34:	74 57                	je     0x8d
  36:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  3d:	48                   	rex.W
  3e:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	89 dd                	mov    %ebx,%ebp
   2:	83 e5 02             	and    $0x2,%ebp
   5:	75 6b                	jne    0x72
   7:	83 e3 01             	and    $0x1,%ebx
   a:	74 57                	je     0x63
   c:	4c 8d a6 08 05 00 00 	lea    0x508(%rsi),%r12
  13:	48                   	rex.W
  14:	b8                   	.byte 0xb8
	...
[10257.744269][    C2] RSP: 0018:ffa0000000218ec8 EFLAGS: 00000046
[10257.744271][    C2] RAX: ffa000000002ec00 RBX: 0000000000000001 RCX: 0000000000000000
[10257.744272][    C2] RDX: 1fe2200000bf04a8 RSI: ff11000005f82000 RDI: ff11000005f82540
[10257.744273][    C2] RBP: dffffc0000000000 R08: ffffffffaa306030 R09: fffffbfff5b921ca
[10257.744274][    C2] R10: 0000000000000002 R11: ffa0000000218ff8 R12: 0000000000000032
[10257.744275][    C2] R13: 0000000000000032 R14: ff11000002980400 R15: ff11000005e55580
[10257.744278][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10257.744281][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10257.744282][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10257.744283][    C2] PKRU: 55555554
[10257.744284][    C2] Call Trace:
[10257.744287][    C2]  <IRQ>
[10257.744291][    C2]  ? vm_del_vqs (drivers/virtio/virtio_mmio.c:286)
[10257.744293][    C2]  __handle_irq_event_percpu (kernel/irq/handle.c:203)
[10257.744296][    C2]  handle_irq_event (kernel/irq/handle.c:242 kernel/irq/handle.c:257)
[10257.744297][    C2]  handle_fasteoi_irq (kernel/irq/chip.c:702 kernel/irq/chip.c:766)
[10257.744300][    C2]  __common_interrupt (./include/asm-generic/irq_regs.h:28 arch/x86/kernel/irq.c:328)
[10257.744302][    C2]  ? __sysvec_apic_timer_interrupt (./include/asm-generic/irq_regs.h:29 (discriminator 6) arch/x86/kernel/apic/apic.c:1061 (discriminator 6))
[10257.744304][    C2]  common_interrupt (arch/x86/kernel/irq.c:318 (discriminator 49))
[10257.744306][    C2]  </IRQ>
[10257.744307][    C2]  <TASK>
[10257.744308][    C2]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[10257.744310][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10257.744312][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10257.744314][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10257.744315][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10257.744315][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10257.744316][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10257.744317][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10257.744318][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10257.744319][    C2]  ? queued_spin_lock_slowpath (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./arch/x86/include/asm/qspinlock.h:102 kernel/locking/qspinlock.c:141)
[10257.744322][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10257.744324][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10257.744326][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10257.744328][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10257.744330][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10257.744332][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10257.744334][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10257.744337][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10257.744339][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10257.744341][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10257.744344][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10257.744346][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10257.744349][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10257.744350][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10257.744352][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10257.744354][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10257.744357][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10257.744359][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10257.744361][    C2]  ? release_sock (net/core/sock.c:3794)
[10257.744363][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10257.744365][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10257.744368][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10257.744370][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10257.744372][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10257.744374][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10257.744375][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10257.744377][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10257.744379][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10257.744380][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10257.744382][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10257.744384][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10257.744386][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10257.744387][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10257.744389][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10257.744390][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10257.744392][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10257.744394][    C2]  ? new_sync_read (fs/read_write.c:584)
[10257.744396][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10257.744397][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10257.744399][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10257.744401][    C2]  vfs_write (fs/read_write.c:686)
[10257.744403][    C2]  ksys_write (fs/read_write.c:739)
[10257.744405][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10257.744407][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10257.744409][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10257.744410][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10257.744412][    C2] RIP: 0033:0x7f814975fc5e
[10257.744414][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10257.744415][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10257.744417][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10257.744418][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10257.744418][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10257.744419][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10257.744420][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10260.230624][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [10260.230889][    C2] rcu: 2-....: (9304751 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3732176
| [10260.231131][    C2] rcu: (t=9308458 jiffies g=521497 q=184827 ncpus=4)
| [10260.231309][    C2] Tainted: [L]=SOFTLOCKUP
[10260.231310][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10260.231310][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10260.231314][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10260.231316][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10260.231318][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10260.231319][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10260.231320][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10260.231321][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10260.231322][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10260.231324][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10260.231326][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10260.231327][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10260.231328][    C2] PKRU: 55555554
[10260.231329][    C2] Call Trace:
[10260.231329][    C2]  <TASK>
[10260.231330][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10260.231333][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10260.231335][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10260.231337][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10260.231340][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10260.231341][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10260.231344][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10260.231346][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10260.231349][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10260.231351][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10260.231353][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10260.231355][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10260.231358][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10260.231359][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10260.231361][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10260.231363][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10260.231366][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10260.231368][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10260.231370][    C2]  ? release_sock (net/core/sock.c:3794)
[10260.231372][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10260.231373][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10260.231376][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10260.231379][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10260.231380][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10260.231382][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10260.231384][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10260.231385][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10260.231387][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10260.231389][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10260.231390][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10260.231393][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10260.231394][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10260.231396][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10260.231398][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10260.231399][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10260.231401][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10260.231402][    C2]  ? new_sync_read (fs/read_write.c:584)
[10260.231404][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10260.231406][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10260.231407][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10260.231410][    C2]  vfs_write (fs/read_write.c:686)
[10260.231412][    C2]  ksys_write (fs/read_write.c:739)
[10260.231414][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10260.231415][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10260.231418][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10260.231419][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10260.231421][    C2] RIP: 0033:0x7f814975fc5e
[10260.231423][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10260.231424][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10260.231425][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10260.231427][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10260.231427][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10260.231428][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10260.231429][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10284.394765][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10284.394767][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10284.394769][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10284.394776][    C2] Tainted: [L]=SOFTLOCKUP
[10284.394777][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10284.394778][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10284.394781][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10284.394782][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10284.394784][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10284.394785][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10284.394786][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10284.394787][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10284.394787][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10284.394790][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10284.394793][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10284.394794][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10284.394795][    C2] PKRU: 55555554
[10284.394796][    C2] Call Trace:
[10284.394799][    C2]  <TASK>
[10284.394802][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10284.394804][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10284.394806][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10284.394809][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10284.394811][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10284.394813][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10284.394815][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10284.394818][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10284.394821][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10284.394822][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10284.394825][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10284.394828][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10284.394830][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10284.394832][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10284.394834][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10284.394836][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10284.394838][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10284.394840][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10284.394842][    C2]  ? release_sock (net/core/sock.c:3794)
[10284.394844][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10284.394846][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10284.394850][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10284.394852][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10284.394854][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10284.394856][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10284.394857][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10284.394859][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10284.394861][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10284.394862][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10284.394864][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10284.394866][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10284.394868][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10284.394870][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10284.394871][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10284.394873][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10284.394875][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10284.394876][    C2]  ? new_sync_read (fs/read_write.c:584)
[10284.394878][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10284.394880][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10284.394881][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10284.394884][    C2]  vfs_write (fs/read_write.c:686)
[10284.394886][    C2]  ksys_write (fs/read_write.c:739)
[10284.394888][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10284.394889][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10284.394892][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10284.394893][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10284.394895][    C2] RIP: 0033:0x7f814975fc5e
[10284.394898][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10284.394899][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10284.394900][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10284.394901][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10284.394902][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10284.394903][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10284.394903][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10312.394759][    C2] hardirqs last disabled at (21231): _raw_spin_lock_irqsave (./include/linux/spinlock_api_smp.h:108 (discriminator 7) kernel/locking/spinlock.c:162 (discriminator 7))
| [10312.394760][    C2] softirqs last  enabled at (21212): __mptcp_retrans (net/mptcp/protocol.c:2763)
| [10312.394763][    C2] softirqs last disabled at (21214): __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
| [10312.394769][    C2] Tainted: [L]=SOFTLOCKUP
[10312.394770][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10312.394772][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10312.394774][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10312.394776][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10312.394777][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10312.394778][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10312.394779][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10312.394780][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10312.394781][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10312.394783][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10312.394786][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10312.394787][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10312.394788][    C2] PKRU: 55555554
[10312.394789][    C2] Call Trace:
[10312.394793][    C2]  <TASK>
[10312.394796][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10312.394799][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10312.394801][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10312.394803][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10312.394805][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10312.394807][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10312.394810][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10312.394812][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10312.394815][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10312.394817][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10312.394819][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10312.394822][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10312.394824][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10312.394826][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10312.394828][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10312.394830][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10312.394833][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10312.394834][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10312.394836][    C2]  ? release_sock (net/core/sock.c:3794)
[10312.394838][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10312.394840][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10312.394843][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10312.394846][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10312.394847][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10312.394849][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10312.394851][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10312.394852][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10312.394854][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10312.394856][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10312.394857][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10312.394860][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10312.394861][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10312.394863][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10312.394865][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10312.394866][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10312.394868][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10312.394870][    C2]  ? new_sync_read (fs/read_write.c:584)
[10312.394872][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10312.394873][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10312.394875][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10312.394877][    C2]  vfs_write (fs/read_write.c:686)
[10312.394880][    C2]  ksys_write (fs/read_write.c:739)
[10312.394882][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10312.394883][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10312.394886][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10312.394887][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10312.394890][    C2] RIP: 0033:0x7f814975fc5e
[10312.394892][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10312.394893][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10312.394894][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10312.394895][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10312.394896][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10312.394897][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0
[10312.394898][    C2] R13: 0000000000002000 R14: 0000000000001f9c R15: 0000000000001f9c
| [10338.233625][    C2] rcu: INFO: rcu_preempt self-detected stall on CPU
| [10338.233851][    C2] rcu: 2-....: (9382729 ticks this GP) idle=7f7c/1/0x4000000000000000 softirq=525045/525047 fqs=3768437
| [10338.234062][    C2] rcu: (t=9386461 jiffies g=521497 q=185964 ncpus=4)
| [10338.234248][    C2] Tainted: [L]=SOFTLOCKUP
[10338.234249][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[10338.234251][    C2] RIP: 0010:queued_spin_lock_slowpath (./arch/x86/include/asm/qspinlock.h:106 kernel/locking/qspinlock.c:141)
[10338.234255][    C2] Code: 8b 13 81 fa 00 01 00 00 74 df 41 89 d5 44 89 6c 24 58 41 81 fd ff 00 00 00 0f 87 0e fd ff ff e9 95 fe ff ff 89 44 24 48 f3 90 <e9> 3f fc ff ff 41 8d 46 01 41 c1 e5 10 c1 e0 12 41 09 c5 be 02 00
All code
========
   0:	8b 13                	mov    (%rbx),%edx
   2:	81 fa 00 01 00 00    	cmp    $0x100,%edx
   8:	74 df                	je     0xffffffffffffffe9
   a:	41 89 d5             	mov    %edx,%r13d
   d:	44 89 6c 24 58       	mov    %r13d,0x58(%rsp)
  12:	41 81 fd ff 00 00 00 	cmp    $0xff,%r13d
  19:	0f 87 0e fd ff ff    	ja     0xfffffffffffffd2d
  1f:	e9 95 fe ff ff       	jmp    0xfffffffffffffeb9
  24:	89 44 24 48          	mov    %eax,0x48(%rsp)
  28:	f3 90                	pause
  2a:*	e9 3f fc ff ff       	jmp    0xfffffffffffffc6e		<-- trapping instruction
  2f:	41 8d 46 01          	lea    0x1(%r14),%eax
  33:	41 c1 e5 10          	shl    $0x10,%r13d
  37:	c1 e0 12             	shl    $0x12,%eax
  3a:	41 09 c5             	or     %eax,%r13d
  3d:	be                   	.byte 0xbe
  3e:	02 00                	add    (%rax),%al

Code starting with the faulting instruction
===========================================
   0:	e9 3f fc ff ff       	jmp    0xfffffffffffffc44
   5:	41 8d 46 01          	lea    0x1(%r14),%eax
   9:	41 c1 e5 10          	shl    $0x10,%r13d
   d:	c1 e0 12             	shl    $0x12,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	be                   	.byte 0xbe
  14:	02 00                	add    (%rax),%al
[10338.234256][    C2] RSP: 0018:ffa0000000617580 EFLAGS: 00000202
[10338.234259][    C2] RAX: 0000000000000001 RBX: ff11000012560b48 RCX: 0000000000000001
[10338.234260][    C2] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ff11000012560b48
[10338.234261][    C2] RBP: 1ff40000000c2eb3 R08: ffffffffac5390f1 R09: ffe21c00024ac169
[10338.234262][    C2] R10: ffe21c00024ac16a R11: 0000000000000000 R12: 0000000000000003
[10338.234263][    C2] R13: ffe21c00024ac169 R14: 000000000000001c R15: ff11000012560b48
[10338.234265][    C2] FS:  00007f81496ee740(0000) GS:ff11000086d76000(0000) knlGS:0000000000000000
[10338.234268][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[10338.234269][    C2] CR2: 00007ffdd049adc8 CR3: 00000000108f0005 CR4: 0000000000771ef0
[10338.234270][    C2] PKRU: 55555554
[10338.234271][    C2] Call Trace:
[10338.234272][    C2]  <TASK>
[10338.234273][    C2]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:79 (discriminator 1))
[10338.234275][    C2]  ? _raw_write_unlock_irqrestore (kernel/locking/qspinlock.c:131)
[10338.234277][    C2]  ? __printk_cpu_sync_put (./include/linux/atomic/atomic-arch-fallback.h:524 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:87 (discriminator 5) kernel/printk/printk.c:5043 (discriminator 5))
[10338.234280][    C2]  do_raw_spin_lock (./include/asm-generic/qspinlock.h:114 kernel/locking/spinlock_debug.c:116)
[10338.234282][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[10338.234284][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10338.234286][    C2]  __mptcp_try_fallback (net/mptcp/protocol.c:89)
[10338.234288][    C2]  mptcp_sendmsg_frag (net/mptcp/protocol.h:1296 (discriminator 1) net/mptcp/protocol.c:1261 (discriminator 1) net/mptcp/protocol.c:1410 (discriminator 1))
[10338.234291][    C2]  ? __mptcp_try_fallback (net/mptcp/protocol.c:1275)
[10338.234293][    C2]  ? __mptcp_retrans (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 net/mptcp/protocol.h:1267 net/mptcp/protocol.c:2772)
[10338.234295][    C2]  __mptcp_retrans (net/mptcp/protocol.c:2779)
[10338.234298][    C2]  ? mptcp_check_and_set_pending (net/mptcp/protocol.c:2717)
[10338.234300][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[10338.234302][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[10338.234304][    C2]  mptcp_release_cb (net/mptcp/protocol.c:3633)
[10338.234306][    C2]  ? sk_reset_timer (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:749 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:253 (discriminator 4) ./include/linux/refcount.h:283 (discriminator 4) ./include/linux/refcount.h:366 (discriminator 4) ./include/linux/refcount.h:383 (discriminator 4) ./include/net/sock.h:826 (discriminator 4) net/core/sock.c:3678 (discriminator 4) net/core/sock.c:3674 (discriminator 4))
[10338.234309][    C2]  ? __mptcp_push_pending (net/mptcp/protocol.c:3602)
[10338.234310][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10338.234313][    C2]  ? release_sock (net/core/sock.c:3794)
[10338.234315][    C2]  release_sock (./include/net/sock.h:1806 ./include/net/sock.h:1811 net/core/sock.c:3801)
[10338.234316][    C2]  mptcp_sendmsg (net/mptcp/protocol.c:1862)
[10338.234319][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10338.234321][    C2]  ? mptcp_stream_accept (net/mptcp/protocol.c:1862)
[10338.234323][    C2]  ? ovl_sync_status (fs/overlayfs/util.c:1528)
[10338.234325][    C2]  ? vfs_iter_write (./include/linux/percpu-rwsem.h:134 (discriminator 3) ./include/linux/fs.h:1911 (discriminator 3) ./include/linux/fs.h:2004 (discriminator 3) ./include/linux/fs.h:3133 (discriminator 3) fs/read_write.c:984 (discriminator 3))
[10338.234327][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10338.234328][    C2]  ? ovl_llseek (fs/overlayfs/file.c:346)
[10338.234330][    C2]  sock_write_iter (net/socket.c:730 (discriminator 1) net/socket.c:742 (discriminator 1) net/socket.c:1195 (discriminator 1))
[10338.234332][    C2]  ? __up_write (kernel/locking/rwsem.c:1388 (discriminator 3))
[10338.234333][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10338.234336][    C2]  ? ovl_open_realfile (fs/overlayfs/file.c:293)
[10338.234337][    C2]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[10338.234339][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[10338.234341][    C2]  ? ____sys_recvmsg (net/socket.c:1176)
[10338.234342][    C2]  new_sync_write (fs/read_write.c:594 (discriminator 1))
[10338.234344][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[10338.234345][    C2]  ? new_sync_read (fs/read_write.c:584)
[10338.234347][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[10338.234349][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[10338.234350][    C2]  ? perf_trace_sched_switch (kernel/sched/core.c:8882)
[10338.234353][    C2]  vfs_write (fs/read_write.c:686)
[10338.234355][    C2]  ksys_write (fs/read_write.c:739)
[10338.234357][    C2]  ? __ia32_sys_read (fs/read_write.c:728)
[10338.234358][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[10338.234361][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[10338.234362][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[10338.234364][    C2] RIP: 0033:0x7f814975fc5e
[10338.234366][    C2] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[10338.234367][    C2] RSP: 002b:00007fffd25a6180 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[10338.234368][    C2] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f814975fc5e
[10338.234369][    C2] RDX: 0000000000001f9c RSI: 00007fffd25a8404 RDI: 0000000000000005
[10338.234370][    C2] RBP: 00007fffd25a6190 R08: 0000000000000000 R09: 0000000000000000
[10338.234370][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffd25a83a0


Finger prints:
__kasan_check_read:queued_spin_lock_slowpath:do_raw_spin_lock:__mptcp_try_fallback:mptcp_sendmsg_frag
validate_chain:__lock_acquire:_raw_spin_lock_bh:__mptcp_try_fallback:mptcp_sendmsg_frag
vm_interrupt:__handle_irq_event_percpu:handle_irq_event:handle_fasteoi_irq:__common_interrupt
_raw_spin_lock_irqsave:__mptcp_retrans:__mptcp_retrans:kasan_check_range:queued_spin_lock_slowpath
irq_entries_start:kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:__mptcp_try_fallback
native_apic_msr_read:ioapic_ack_level:handle_fasteoi_irq:__common_interrupt:common_interrupt
native_apic_msr_eoi:ioapic_ack_level:handle_fasteoi_irq:__common_interrupt:common_interrupt
kasan_check_range:queued_spin_lock_slowpath:do_raw_spin_lock:__mptcp_try_fallback:mptcp_sendmsg_frag
_raw_spin_lock_irqsave:__mptcp_retrans:__mptcp_retrans:__kasan_check_read:queued_spin_lock_slowpath
_raw_spin_lock:handle_irq_event:handle_fasteoi_irq:__common_interrupt:common_interrupt
kasan_check_range:do_raw_spin_lock:handle_irq_event:handle_fasteoi_irq:__common_interrupt
vring_interrupt:vm_interrupt:__handle_irq_event_percpu:handle_irq_event:handle_fasteoi_irq
restore_regs_and_return_to_kernel:queued_spin_lock_slowpath:do_raw_spin_lock:__mptcp_try_fallback:mptcp_sendmsg_frag
irq_entries_start:queued_spin_lock_slowpath:do_raw_spin_lock:__mptcp_try_fallback:mptcp_sendmsg_frag
ioapic_ack_level:handle_fasteoi_irq:__common_interrupt:common_interrupt:asm_common_interrupt
_raw_spin_unlock_irqrestore:_raw_spin_lock_irqsave:__mptcp_retrans:__mptcp_retrans:queued_spin_lock_slowpath
lock_acquire:_raw_spin_lock:handle_irq_event:handle_fasteoi_irq:__common_interrupt
trace_irq_handler_exit:__handle_irq_event_percpu:handle_irq_event:handle_fasteoi_irq:__common_interrupt
queued_spin_lock_slowpath:do_raw_spin_lock:__mptcp_try_fallback:mptcp_sendmsg_frag:__mptcp_retrans
_raw_spin_lock_irqsave:__mptcp_retrans:__mptcp_retrans:queued_spin_lock_slowpath:do_raw_spin_lock