======================================
| [   22.061048][  T338] softirqs last disabled at (36913): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   22.061050][  T338] Preemption disabled at:
| [   22.061050][  T338] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.061060][  T338] Tainted: [W]=WARN
[   22.061060][  T338] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   22.061062][  T338] Call Trace:
[   22.061064][  T338]  <TASK>
[   22.061065][  T338]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.061070][  T338]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.061073][  T338]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.061077][  T338]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.061081][  T338]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.061086][  T338]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   22.061089][  T338]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.061095][  T338]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   22.061098][  T338]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.061102][  T338]  put_chars (drivers/char/virtio_console.c:1176)
[   22.061105][  T338]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.061109][  T338]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.061114][  T338]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.061121][  T338]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.061124][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.061127][  T338]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.061131][  T338]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.061135][  T338]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.061139][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.061142][  T338]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.061145][  T338]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.061150][  T338]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.061151][  T338]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.061157][  T338]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.061159][  T338]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.061161][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.061163][  T338]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   22.061167][  T338]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.061169][  T338]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.061172][  T338]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.061176][  T338]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.061178][  T338]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.061181][  T338]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.061182][  T338]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   22.061187][  T338]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   22.061190][  T338]  _printk (kernel/printk/printk.c:2504)
[   22.061194][  T338]  ? snapshot_read.cold (user.c:?)
[   22.061197][  T338]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   22.061201][  T338]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   22.061204][  T338]  ? configfs_register_subsystem (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 fs/configfs/dir.c:173 fs/configfs/dir.c:171 fs/configfs/dir.c:1929)
[   22.061209][  T338] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   22.061212][  T338]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   22.061219][  T338]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   22.061221][  T338]  do_one_initcall (init/main.c:1357)
[   22.061225][  T338]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   22.061229][  T338]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   22.061232][  T338]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   22.061237][  T338]  do_init_module (kernel/module/main.c:3117)
[   22.061241][  T338]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   22.061245][  T338]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   22.061248][  T338]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   22.061252][  T338]  load_module (kernel/module/main.c:3593)
[   22.061266][  T338]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   22.061270][  T338]  ? __ia32_sys_fsconfig (??:?)
[   22.061272][  T338]  ? add_chain_cache (kernel/locking/lockdep.c:3782)
[   22.061278][  T338]  init_module_from_file (kernel/module/main.c:3790)
[   22.061281][  T338]  ? __ia32_sys_init_module (kernel/module/main.c:3647)
[   22.061289][  T338]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   22.061292][  T338]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   22.061295][  T338]  idempotent_init_module (kernel/module/main.c:3802)
[   22.061299][  T338]  ? init_module_from_file (kernel/module/main.c:3791)
[   22.061305][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.061307][  T338]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   22.061313][  T338]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   22.061315][  T338]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   22.061319][  T338]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.061321][  T338]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.061324][  T338]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.061330][  T338] RIP: 0033:0x7f1e70b8137d
[   22.061335][  T338] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   22.061337][  T338] RSP: 002b:00007ffcc376e9c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   22.061340][  T338] RAX: ffffffffffffffda RBX: 00005644b0b13700 RCX: 00007f1e70b8137d
[   22.061342][  T338] RDX: 0000000000000000 RSI: 0000564494833ffd RDI: 0000000000000005
[   22.061343][  T338] RBP: 00007ffcc376ea60 R08: 0000000000000000 R09: 0000000000000000
[   22.061344][  T338] R10: 0000000000000000 R11: 0000000000000246 R12: 0000564494833ffd
[   22.061345][  T338] R13: 00005644b0b13810 R14: 0000000000040000 R15: 0000000000000000
| [   23.145062][  T337] softirqs last disabled at (334391): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   23.145066][  T337] Preemption disabled at:
| [   23.145067][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   23.145082][  T337] Tainted: [W]=WARN
[   23.145084][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   23.145086][  T337] Call Trace:
[   23.145089][  T337]  <TASK>
[   23.145092][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.145100][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   23.145103][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.145110][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.145116][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   23.145124][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   23.145128][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.145139][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   23.145143][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.145149][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   23.145155][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.145158][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   23.145166][  T337]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   23.145174][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.145180][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.145182][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.145191][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.145198][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.145203][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.145211][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.145219][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.145227][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.145231][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.145239][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.145247][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.145250][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.145266][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.145271][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.145274][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.145278][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   23.145285][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.145288][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.145294][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.145301][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.145312][  T337]  _printk (kernel/printk/printk.c:2504)
[   23.145318][  T337]  ? snapshot_read.cold (user.c:?)
[   23.145321][  T337]  ? preempt_schedule_common (kernel/sched/core.c:7449)
[   23.145330][  T337]  ? preempt_schedule_thunk (arch/x86/entry/thunk.S:12)
[   23.145345][  T337]  register_console (kernel/printk/printk.c:4212 (discriminator 7))
[   23.145352][  T337]  ? get_init_console_seq.constprop.0.isra.0 (kernel/printk/printk.c:4018)
[   23.145356][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.145366][  T337] enabled_store (drivers/net/netconsole.c:1039) netconsole
[   23.145371][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   23.145377][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   23.145381][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   23.145384][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   23.145388][  T337]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   23.145396][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   23.145400][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   23.145405][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   23.145410][  T337]  new_sync_write (fs/read_write.c:595)
[   23.145416][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.145421][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   23.145428][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.145431][  T337]  ? ksys_write (fs/read_write.c:739)
[   23.145444][  T337]  vfs_write (fs/read_write.c:687)
[   23.145452][  T337]  ksys_write (fs/read_write.c:739)
[   23.145457][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   23.145463][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.145470][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.145474][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   23.145479][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.145484][  T337] RIP: 0033:0x7f8899c7c312
[   23.145489][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   23.145492][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.145496][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f8899c7c312
[   23.145499][  T337] RDX: 0000000000000001 RSI: 00005650093522b0 RDI: 0000000000000010
[   23.145501][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   23.145503][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390
[   23.145504][  T337] R13: 00005650093522b0 R14: 0000000000000010 R15: 00007f8899a750d0
| [   24.181635][  T337] softirqs last disabled at (353769): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   24.181638][  T337] Preemption disabled at:
| [   24.181639][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.181648][  T337] Tainted: [W]=WARN
[   24.181649][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   24.181651][  T337] Call Trace:
[   24.181653][  T337]  <TASK>
[   24.181654][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.181661][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.181663][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.181668][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.181672][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.181678][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   24.181680][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.181687][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   24.181690][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.181694][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   24.181697][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.181699][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   24.181703][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.181706][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.181710][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.181714][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.181716][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.181721][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.181725][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.181728][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.181733][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.181737][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.181742][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.181745][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.181749][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.181754][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.181756][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.181761][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.181764][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.181766][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.181768][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   24.181772][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.181774][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.181777][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.181781][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.181785][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   24.181791][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   24.181795][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   24.181799][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   24.181801][  T337]  ? idr_get_free (??:?)
[   24.181805][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   24.181808][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   24.181811][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   24.181814][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   24.181819][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   24.181822][  T337]  new_sync_write (fs/read_write.c:595)
[   24.181828][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   24.181833][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.181838][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   24.181841][  T337]  vfs_write (fs/read_write.c:687)
[   24.181846][  T337]  ksys_write (fs/read_write.c:739)
[   24.181849][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   24.181852][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.181856][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.181858][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   24.181861][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.181863][  T337] RIP: 0033:0x7f8899c7c312
[   24.181868][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   24.181870][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   24.181873][  T337] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f8899c7c312
[   24.181875][  T337] RDX: 00000000000002ee RSI: 00005650093522b0 RDI: 000000000000000b
[   24.181876][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   24.181877][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390
[   24.181878][  T337] R13: 00005650093522b0 R14: 000000000000000b R15: 00007f8899a750d0
| [   25.543576][  T337] softirqs last disabled at (384987): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   25.543579][  T337] Preemption disabled at:
| [   25.543579][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.543589][  T337] Tainted: [W]=WARN
[   25.543590][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.543592][  T337] Call Trace:
[   25.543594][  T337]  <TASK>
[   25.543596][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.543601][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.543604][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.543609][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.543613][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.543618][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   25.543621][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.543627][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   25.543630][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.543634][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   25.543638][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.543640][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   25.543643][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.543647][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.543651][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.543655][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.543656][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.543661][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.543664][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.543667][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.543671][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.543675][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.543680][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.543682][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.543686][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.543691][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.543692][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.543698][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.543701][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.543703][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.543705][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   25.543709][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.543710][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.543714][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.543717][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.543721][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   25.543726][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   25.543730][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   25.543734][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   25.543737][  T337]  ? idr_get_free (??:?)
[   25.543740][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   25.543745][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   25.543748][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   25.543751][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.543755][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.543758][  T337]  new_sync_write (fs/read_write.c:595)
[   25.543764][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   25.543768][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.543773][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   25.543776][  T337]  vfs_write (fs/read_write.c:687)
[   25.543781][  T337]  ksys_write (fs/read_write.c:739)
[   25.543784][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   25.543786][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.543790][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.543793][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   25.543795][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.543798][  T337] RIP: 0033:0x7f8899c7c312
[   25.543803][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   25.543804][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.543807][  T337] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f8899c7c312
[   25.543809][  T337] RDX: 00000000000002ee RSI: 00005650093522b0 RDI: 000000000000000b
[   25.543810][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   25.543811][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390
[   25.543812][  T337] R13: 00005650093522b0 R14: 000000000000000b R15: 00007f8899a750d0
| [   26.550522][  T337] softirqs last disabled at (410997): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   26.550525][  T337] Preemption disabled at:
| [   26.550525][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.550535][  T337] Tainted: [W]=WARN
[   26.550536][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.550538][  T337] Call Trace:
[   26.550540][  T337]  <TASK>
[   26.550542][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.550548][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.550551][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.550555][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.550560][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.550565][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   26.550568][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.550575][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   26.550578][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.550582][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   26.550586][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.550588][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.550592][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.550595][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.550599][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.550604][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.550606][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.550611][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.550615][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.550618][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.550622][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.550627][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.550632][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.550634][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.550638][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.550643][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.550647][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.550653][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.550656][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.550658][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.550660][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   26.550664][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.550666][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.550670][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.550674][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.550676][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.550678][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.550680][  T337]  ? enabled_store (./include/linux/console.h:573 drivers/net/netconsole.c:1037) netconsole
[   26.550683][  T337]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.550687][  T337]  _printk (kernel/printk/printk.c:2504)
[   26.550691][  T337]  ? snapshot_read.cold (user.c:?)
[   26.550695][  T337]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 kernel/locking/mutex.c:999)
[   26.550698][  T337]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 (discriminator 1) kernel/locking/mutex.c:999 (discriminator 1))
[   26.550703][  T337]  ? __mutex_unlock_slowpath (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:4480 kernel/locking/mutex.c:1021)
[   26.550706][  T337] netconsole_print_banner (drivers/net/netconsole.c:729 (discriminator 1)) netconsole
[   26.550711][  T337] enabled_store.cold (drivers/net/netconsole.c:1054) netconsole
[   26.550714][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   26.550718][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   26.550720][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   26.550723][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   26.550725][  T337]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   26.550730][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   26.550732][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   26.550734][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   26.550737][  T337]  new_sync_write (fs/read_write.c:595)
[   26.550742][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.550745][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.550749][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.550751][  T337]  ? ksys_write (fs/read_write.c:739)
[   26.550758][  T337]  vfs_write (fs/read_write.c:687)
[   26.550762][  T337]  ksys_write (fs/read_write.c:739)
[   26.550765][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.550768][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.550772][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.550775][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   26.550778][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.550781][  T337] RIP: 0033:0x7f8899c7c312
[   26.550785][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   26.550787][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   26.550790][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f8899c7c312
[   26.550791][  T337] RDX: 0000000000000001 RSI: 00005650093522b0 RDI: 000000000000000b
[   26.550792][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   26.550793][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390
[   26.550794][  T337] R13: 00005650093522b0 R14: 000000000000000b R15: 00007f8899a750d0
| [   27.964999][  T337] softirqs last disabled at (441305): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   27.965001][  T337] Preemption disabled at:
| [   27.965002][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   27.965015][  T337] Tainted: [W]=WARN
[   27.965016][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   27.965018][  T337] Call Trace:
[   27.965019][  T337]  <TASK>
[   27.965021][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.965027][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   27.965029][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.965034][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.965039][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   27.965044][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   27.965047][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.965053][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   27.965056][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.965060][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   27.965064][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.965066][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   27.965069][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.965072][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.965077][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.965081][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.965083][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.965087][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.965091][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.965094][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.965098][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.965102][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.965107][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.965109][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.965113][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.965117][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.965119][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.965125][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.965127][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.965129][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.965132][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   27.965136][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.965137][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.965141][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.965145][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.965149][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   27.965154][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   27.965158][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   27.965163][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   27.965165][  T337]  ? idr_get_free (??:?)
[   27.965168][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   27.965172][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   27.965174][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   27.965177][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   27.965182][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   27.965185][  T337]  new_sync_write (fs/read_write.c:595)
[   27.965191][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   27.965195][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.965200][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   27.965204][  T337]  vfs_write (fs/read_write.c:687)
[   27.965208][  T337]  ksys_write (fs/read_write.c:739)
[   27.965211][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   27.965214][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.965217][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.965220][  T337]  ? common_interrupt (arch/x86/kernel/irq.c:273 (discriminator 18))
[   27.965223][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.965226][  T337] RIP: 0033:0x7f8899c7c312
[   27.965231][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   27.965233][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   27.965236][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f8899c7c312
[   27.965237][  T337] RDX: 0000000000000316 RSI: 00005650093522b0 RDI: 000000000000000b
[   27.965238][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   27.965239][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390
[   27.965240][  T337] R13: 00005650093522b0 R14: 000000000000000b R15: 00007f8899a750d0
| [   28.970554][  T337] softirqs last disabled at (474177): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   28.970557][  T337] Preemption disabled at:
| [   28.970557][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   28.970567][  T337] Tainted: [W]=WARN
[   28.970568][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   28.970570][  T337] Call Trace:
[   28.970572][  T337]  <TASK>
[   28.970573][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.970579][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   28.970582][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.970586][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.970590][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   28.970596][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   28.970598][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.970605][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   28.970608][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.970612][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   28.970616][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.970618][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   28.970622][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.970625][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   28.970629][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.970633][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.970635][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.970639][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.970643][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.970646][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.970650][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.970654][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.970659][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.970662][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.970666][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.970670][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.970672][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.970677][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.970680][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.970682][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.970684][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   28.970688][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.970690][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.970694][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.970697][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.970701][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   28.970707][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   28.970711][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   28.970715][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   28.970717][  T337]  ? idr_get_free (??:?)
[   28.970721][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   28.970724][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   28.970726][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   28.970729][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   28.970734][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   28.970737][  T337]  new_sync_write (fs/read_write.c:595)
[   28.970743][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   28.970747][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.970752][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   28.970756][  T337]  vfs_write (fs/read_write.c:687)
[   28.970760][  T337]  ksys_write (fs/read_write.c:739)
[   28.970763][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   28.970766][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.970770][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   28.970772][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   28.970775][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   28.970778][  T337] RIP: 0033:0x7f8899c7c312
[   28.970782][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   28.970784][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   28.970787][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f8899c7c312
[   28.970789][  T337] RDX: 0000000000000316 RSI: 00005650093522b0 RDI: 000000000000000b
[   28.970790][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   28.970791][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390
[   28.970791][  T337] R13: 00005650093522b0 R14: 000000000000000b R15: 00007f8899a750d0
| [   30.022915][  T337] softirqs last disabled at (493703): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   30.022918][  T337] Preemption disabled at:
| [   30.022919][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   30.022928][  T337] Tainted: [W]=WARN
[   30.022929][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   30.022932][  T337] Call Trace:
[   30.022933][  T337]  <TASK>
[   30.022935][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   30.022941][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   30.022944][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   30.022949][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   30.022954][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   30.022960][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   30.022963][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.022971][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   30.022974][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   30.022979][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   30.022983][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   30.022985][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   30.022990][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   30.022993][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   30.022998][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   30.023002][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.023004][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.023010][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   30.023014][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.023018][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.023023][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   30.023028][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   30.023033][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.023036][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   30.023042][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   30.023047][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   30.023049][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   30.023055][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   30.023058][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   30.023061][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.023064][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   30.023068][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   30.023071][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   30.023075][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   30.023079][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   30.023084][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   30.023090][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   30.023095][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   30.023099][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   30.023102][  T337]  ? idr_get_free (??:?)
[   30.023105][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   30.023109][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   30.023112][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   30.023115][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   30.023120][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   30.023123][  T337]  new_sync_write (fs/read_write.c:595)
[   30.023130][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   30.023135][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   30.023141][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   30.023145][  T337]  vfs_write (fs/read_write.c:687)
[   30.023150][  T337]  ksys_write (fs/read_write.c:739)
[   30.023154][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   30.023157][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   30.023162][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   30.023165][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   30.023168][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   30.023171][  T337] RIP: 0033:0x7f8899c7c312
[   30.023176][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   30.023178][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   30.023182][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f8899c7c312
[   30.023183][  T337] RDX: 0000000000000316 RSI: 00005650093522b0 RDI: 000000000000000b
[   30.023185][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   30.023186][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390
[   30.023187][  T337] R13: 00005650093522b0 R14: 000000000000000b R15: 00007f8899a750d0
| [   31.022455][  T337] softirqs last disabled at (512353): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   31.022459][  T337] Preemption disabled at:
| [   31.022460][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   31.022473][  T337] Tainted: [W]=WARN
[   31.022475][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   31.022478][  T337] Call Trace:
[   31.022480][  T337]  <TASK>
[   31.022482][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   31.022490][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   31.022493][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   31.022500][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   31.022506][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   31.022513][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   31.022517][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.022528][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   31.022531][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.022537][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   31.022541][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   31.022544][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   31.022550][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.022554][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   31.022561][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   31.022566][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.022569][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.022577][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   31.022583][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.022588][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.022594][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   31.022600][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   31.022608][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.022611][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.022618][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   31.022624][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   31.022627][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.022636][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   31.022641][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   31.022644][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.022647][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   31.022654][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   31.022656][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   31.022662][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   31.022668][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   31.022673][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   31.022681][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   31.022687][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   31.022693][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   31.022697][  T337]  ? idr_get_free (??:?)
[   31.022701][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   31.022707][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   31.022711][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   31.022716][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   31.022723][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   31.022727][  T337]  new_sync_write (fs/read_write.c:595)
[   31.022736][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   31.022743][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.022752][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   31.022757][  T337]  vfs_write (fs/read_write.c:687)
[   31.022764][  T337]  ksys_write (fs/read_write.c:739)
[   31.022769][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   31.022774][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.022780][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   31.022784][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   31.022789][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   31.022793][  T337] RIP: 0033:0x7f8899c7c312
[   31.022800][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   31.022803][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   31.022809][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f8899c7c312
[   31.022812][  T337] RDX: 0000000000000316 RSI: 00005650093522b0 RDI: 000000000000000b
[   31.022814][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   31.022815][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390
[   31.022817][  T337] R13: 00005650093522b0 R14: 000000000000000b R15: 00007f8899a750d0
| [   32.057992][  T337] softirqs last disabled at (536449): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   32.057995][  T337] Preemption disabled at:
| [   32.057997][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   32.058010][  T337] Tainted: [W]=WARN
[   32.058011][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.058014][  T337] Call Trace:
[   32.058016][  T337]  <TASK>
[   32.058018][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.058026][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   32.058029][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.058036][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.058042][  T337]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   32.058050][  T337]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   32.058054][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.058063][  T337]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   32.058067][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.058074][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   32.058079][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.058083][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   32.058089][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.058094][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.058101][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.058106][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.058109][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.058117][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.058123][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.058128][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.058135][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.058141][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.058149][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.058153][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.058160][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.058167][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.058170][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.058180][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.058184][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.058187][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.058191][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18))
[   32.058197][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.058200][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.058206][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.058212][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.058218][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   32.058226][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   32.058232][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   32.058239][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   32.058242][  T337]  ? idr_get_free (??:?)
[   32.058247][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   32.058252][  T337]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   32.058256][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   32.058261][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   32.058269][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   32.058273][  T337]  new_sync_write (fs/read_write.c:595)
[   32.058281][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   32.058289][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.058303][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   32.058309][  T337]  vfs_write (fs/read_write.c:687)
[   32.058316][  T337]  ksys_write (fs/read_write.c:739)
[   32.058321][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   32.058328][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.058335][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   32.058340][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   32.058344][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.058348][  T337] RIP: 0033:0x7f8899c7c312
[   32.058354][  T337] Code: 08 0f 85 71 41 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 55 bf 01 00
All code
========
   0:	08 0f                	or     %cl,(%rdi)
   2:	85 71 41             	test   %esi,0x41(%rcx)
   5:	ff                   	(bad)
   6:	ff 49 89             	decl   -0x77(%rcx)
   9:	fb                   	sti
   a:	48 89 f0             	mov    %rsi,%rax
   d:	48 89 d7             	mov    %rdx,%rdi
  10:	48 89 ce             	mov    %rcx,%rsi
  13:	4c 89 c2             	mov    %r8,%rdx
  16:	4d 89 ca             	mov    %r9,%r10
  19:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
  1e:	4c 8b 4c 24 10       	mov    0x10(%rsp),%r9
  23:	4c 89 5c 24 08       	mov    %r11,0x8(%rsp)
  28:	0f 05                	syscall
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  32:	00 00 00 
  35:	0f 1f 00             	nopl   (%rax)
  38:	f3 0f 1e fa          	endbr64
  3c:	55                   	push   %rbp
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	55                   	push   %rbp
  13:	bf                   	.byte 0xbf
  14:	01 00                	add    %eax,(%rax)
[   32.058357][  T337] RSP: 002b:00007ffc14064d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   32.058361][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f8899c7c312
[   32.058363][  T337] RDX: 0000000000000316 RSI: 00005650093522b0 RDI: 000000000000000b
[   32.058365][  T337] RBP: 00007ffc14064d90 R08: 0000000000000000 R09: 0000000000000000
[   32.058367][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8899ae9390


Finger prints:
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars