======================================
| [   21.490580][  T338] softirqs last disabled at (41983): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   21.490582][  T338] Preemption disabled at:
| [   21.490583][  T338] vprintk_emit (kernel/printk/printk.c:2471)
| [   21.490592][  T338] Tainted: [W]=WARN
[   21.490593][  T338] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   21.490595][  T338] Call Trace:
[   21.490597][  T338]  <TASK>
[   21.490598][  T338]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   21.490604][  T338]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   21.490606][  T338]  __might_resched.cold (kernel/sched/core.c:9234)
[   21.490611][  T338]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   21.490615][  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)
[   21.490621][  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))
[   21.490623][  T338]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.490630][  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)
[   21.490633][  T338]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   21.490636][  T338]  put_chars (drivers/char/virtio_console.c:1176)
[   21.490640][  T338]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   21.490643][  T338]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   21.490648][  T338]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   21.490655][  T338]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   21.490658][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.490662][  T338]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.490666][  T338]  console_emit_next_record (kernel/printk/printk.c:3183)
[   21.490669][  T338]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   21.490674][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.490676][  T338]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   21.490680][  T338]  console_flush_one_record (kernel/printk/printk.c:3268)
[   21.490684][  T338]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   21.490686][  T338]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   21.490691][  T338]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   21.490694][  T338]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   21.490696][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.490698][  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))
[   21.490702][  T338]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   21.490703][  T338]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   21.490707][  T338]  vprintk_emit (kernel/printk/printk.c:2479)
[   21.490711][  T338]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   21.490712][  T338]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   21.490716][  T338]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   21.490717][  T338]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   21.490721][  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
[   21.490725][  T338]  _printk (kernel/printk/printk.c:2504)
[   21.490729][  T338]  ? snapshot_read.cold (user.c:?)
[   21.490732][  T338]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   21.490736][  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
[   21.490740][  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)
[   21.490744][  T338] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   21.490747][  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
[   21.490754][  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
[   21.490757][  T338]  do_one_initcall (init/main.c:1357)
[   21.490760][  T338]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   21.490765][  T338]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   21.490768][  T338]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   21.490773][  T338]  do_init_module (kernel/module/main.c:3117)
[   21.490777][  T338]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   21.490781][  T338]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   21.490784][  T338]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   21.490788][  T338]  load_module (kernel/module/main.c:3593)
[   21.490795][  T338]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   21.490799][  T338]  ? __ia32_sys_fsconfig (??:?)
[   21.490801][  T338]  ? add_chain_cache (kernel/locking/lockdep.c:3782)
[   21.490807][  T338]  init_module_from_file (kernel/module/main.c:3790)
[   21.490810][  T338]  ? __ia32_sys_init_module (kernel/module/main.c:3647)
[   21.490818][  T338]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   21.490821][  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)
[   21.490824][  T338]  idempotent_init_module (kernel/module/main.c:3802)
[   21.490828][  T338]  ? init_module_from_file (kernel/module/main.c:3791)
[   21.490834][  T338]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   21.490836][  T338]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   21.490842][  T338]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   21.490844][  T338]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   21.490848][  T338]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   21.490852][  T338]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   21.490855][  T338]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   21.490858][  T338] RIP: 0033:0x7f5ddfe9937d
[   21.490861][  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
[   21.490863][  T338] RSP: 002b:00007ffc7d52dd48 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   21.490865][  T338] RAX: ffffffffffffffda RBX: 000055b274bfc700 RCX: 00007f5ddfe9937d
[   21.490867][  T338] RDX: 0000000000000000 RSI: 000055b235132ffd RDI: 0000000000000005
[   21.490868][  T338] RBP: 00007ffc7d52dde0 R08: 0000000000000000 R09: 0000000000000000
[   21.490869][  T338] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b235132ffd
[   21.490869][  T338] R13: 000055b274bfc810 R14: 0000000000040000 R15: 0000000000000000
| [   22.545181][  T337] softirqs last disabled at (306726): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   22.545183][  T337] Preemption disabled at:
| [   22.545184][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.545194][  T337] Tainted: [W]=WARN
[   22.545195][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   22.545197][  T337] Call Trace:
[   22.545199][  T337]  <TASK>
[   22.545201][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.545206][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.545209][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.545214][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.545218][  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)
[   22.545223][  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))
[   22.545226][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.545233][  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)
[   22.545236][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.545240][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   22.545243][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.545245][  T337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   22.545250][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.545252][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.545258][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.545261][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.545267][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.545270][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.545275][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.545280][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.545285][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.545287][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.545291][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.545296][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.545298][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.545303][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.545306][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.545308][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.545311][  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))
[   22.545315][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.545316][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.545320][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.545324][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.545327][  T337]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   22.545329][  T337]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   22.545333][  T337]  _printk (kernel/printk/printk.c:2504)
[   22.545337][  T337]  ? snapshot_read.cold (user.c:?)
[   22.545339][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.545343][  T337]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   22.545345][  T337]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   22.545349][  T337]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   22.545352][  T337]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   22.545357][  T337] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   22.545361][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   22.545365][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   22.545367][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   22.545369][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   22.545372][  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))
[   22.545376][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   22.545378][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   22.545381][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   22.545384][  T337]  new_sync_write (fs/read_write.c:595)
[   22.545388][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.545391][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   22.545394][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.545396][  T337]  ? ksys_write (fs/read_write.c:739)
[   22.545403][  T337]  vfs_write (fs/read_write.c:687)
[   22.545407][  T337]  ksys_write (fs/read_write.c:739)
[   22.545410][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   22.545413][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.545417][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.545419][  T337]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.545423][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.545425][  T337] RIP: 0033:0x7f9135ca6312
[   22.545429][  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)
[   22.545431][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.545434][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9135ca6312
[   22.545436][  T337] RDX: 0000000000000001 RSI: 000055bfbbae22b0 RDI: 0000000000000010
[   22.545437][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   22.545438][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   22.545439][  T337] R13: 000055bfbbae22b0 R14: 0000000000000010 R15: 00007f9135aa10d0
| [   23.554999][  T337] softirqs last disabled at (596620): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   23.555003][  T337] Preemption disabled at:
| [   23.555003][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   23.555018][  T337] Tainted: [W]=WARN
[   23.555019][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   23.555021][  T337] Call Trace:
[   23.555023][  T337]  <TASK>
[   23.555025][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.555031][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   23.555033][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.555038][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.555042][  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)
[   23.555047][  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))
[   23.555049][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.555056][  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)
[   23.555059][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.555063][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   23.555066][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.555068][  T337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   23.555073][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   23.555075][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   23.555080][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.555083][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.555089][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.555092][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.555097][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.555101][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.555105][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.555108][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.555112][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.555116][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.555118][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.555123][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.555126][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.555128][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.555130][  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))
[   23.555134][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.555136][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.555139][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.555144][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.555146][  T337]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   23.555148][  T337]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   23.555152][  T337]  _printk (kernel/printk/printk.c:2504)
[   23.555156][  T337]  ? snapshot_read.cold (user.c:?)
[   23.555157][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.555161][  T337]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   23.555163][  T337]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   23.555168][  T337]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   23.555171][  T337]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   23.555176][  T337] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   23.555179][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   23.555183][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   23.555185][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   23.555187][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   23.555190][  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))
[   23.555194][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   23.555196][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   23.555198][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   23.555201][  T337]  new_sync_write (fs/read_write.c:595)
[   23.555205][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.555207][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   23.555211][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.555213][  T337]  ? ksys_write (fs/read_write.c:739)
[   23.555219][  T337]  vfs_write (fs/read_write.c:687)
[   23.555223][  T337]  ksys_write (fs/read_write.c:739)
[   23.555226][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   23.555229][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.555232][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.555235][  T337]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   23.555238][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.555240][  T337] RIP: 0033:0x7f9135ca6312
[   23.555244][  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)
[   23.555246][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.555249][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9135ca6312
[   23.555250][  T337] RDX: 0000000000000001 RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   23.555251][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   23.555252][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   23.555253][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   24.938035][  T337] softirqs last disabled at (624789): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   24.938038][  T337] Preemption disabled at:
| [   24.938038][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.938049][  T337] Tainted: [W]=WARN
[   24.938050][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   24.938053][  T337] Call Trace:
[   24.938054][  T337]  <TASK>
[   24.938056][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.938062][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.938064][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.938069][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.938073][  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)
[   24.938078][  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))
[   24.938081][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.938087][  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)
[   24.938090][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.938094][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   24.938097][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.938099][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   24.938103][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.938105][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.938109][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.938113][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.938115][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.938119][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.938123][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.938126][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.938129][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.938133][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.938137][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.938140][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.938143][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.938147][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.938149][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.938154][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.938157][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.938159][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.938161][  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))
[   24.938165][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.938166][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.938170][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.938173][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.938176][  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)
[   24.938182][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   24.938185][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   24.938189][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   24.938191][  T337]  ? idr_get_free (??:?)
[   24.938195][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   24.938198][  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)
[   24.938200][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   24.938203][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   24.938206][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.938208][  T337]  ? assoc_array_subtree_iterate (lib/assoc_array.c:99)
[   24.938212][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   24.938214][  T337]  new_sync_write (fs/read_write.c:595)
[   24.938218][  T337]  ? static_obj (kernel/locking/lockdep.c:868 (discriminator 1))
[   24.938222][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   24.938226][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.938230][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   24.938234][  T337]  vfs_write (fs/read_write.c:687)
[   24.938238][  T337]  ksys_write (fs/read_write.c:739)
[   24.938241][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   24.938243][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.938247][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.938250][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   24.938252][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.938255][  T337] RIP: 0033:0x7f9135ca6312
[   24.938259][  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)
[   24.938261][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   24.938265][  T337] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f9135ca6312
[   24.938266][  T337] RDX: 00000000000002ee RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   24.938267][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   24.938268][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   24.938269][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   25.940663][  T337] softirqs last disabled at (642973): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   25.940665][  T337] Preemption disabled at:
| [   25.940666][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.940675][  T337] Tainted: [W]=WARN
[   25.940677][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   25.940679][  T337] Call Trace:
[   25.940680][  T337]  <TASK>
[   25.940682][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.940688][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.940690][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.940695][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.940700][  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)
[   25.940705][  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))
[   25.940708][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.940714][  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)
[   25.940717][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.940721][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   25.940724][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.940726][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   25.940730][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.940733][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.940737][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.940741][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.940742][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.940747][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.940750][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.940753][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.940757][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.940761][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.940765][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.940767][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.940771][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.940775][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.940779][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.940784][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.940787][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.940789][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.940791][  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))
[   25.940795][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.940796][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.940800][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.940804][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.940807][  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)
[   25.940812][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   25.940816][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   25.940820][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   25.940822][  T337]  ? idr_get_free (??:?)
[   25.940825][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   25.940828][  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)
[   25.940831][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   25.940834][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.940838][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.940840][  T337]  new_sync_write (fs/read_write.c:595)
[   25.940846][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   25.940853][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.940857][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   25.940861][  T337]  vfs_write (fs/read_write.c:687)
[   25.940865][  T337]  ksys_write (fs/read_write.c:739)
[   25.940868][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   25.940871][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.940875][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.940878][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   25.940880][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.940883][  T337] RIP: 0033:0x7f9135ca6312
[   25.940887][  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)
[   25.940889][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.940892][  T337] RAX: ffffffffffffffda RBX: 00000000000002ee RCX: 00007f9135ca6312
[   25.940894][  T337] RDX: 00000000000002ee RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   25.940895][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   25.940896][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   25.940897][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   26.941917][  T337] softirqs last disabled at (663847): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   26.941920][  T337] Preemption disabled at:
| [   26.941920][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.941932][  T337] Tainted: [W]=WARN
[   26.941933][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   26.941936][  T337] Call Trace:
[   26.941938][  T337]  <TASK>
[   26.941940][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.941946][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.941949][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.941954][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.941958][  T337]  ? kmem_cache_alloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5010)
[   26.941963][  T337]  kmem_cache_alloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5010 (discriminator 2))
[   26.941965][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   26.941968][  T337]  ? __alloc_object (mm/kmemleak.c:504 (discriminator 1) mm/kmemleak.c:686 (discriminator 1))
[   26.941975][  T337]  __alloc_object (mm/kmemleak.c:504 (discriminator 1) mm/kmemleak.c:686 (discriminator 1))
[   26.941977][  T337]  ? kasan_quarantine_reduce (./include/linux/srcu.h:498 mm/kasan/quarantine.c:287)
[   26.941980][  T337]  __create_object (mm/kmemleak.c:801)
[   26.941985][  T337]  __kmalloc_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4696 mm/slub.c:4996 mm/slub.c:5413 mm/slub.c:5439)
[   26.941988][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.941995][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.941999][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   26.942002][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.942005][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.942008][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.942011][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.942016][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.942019][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.942021][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.942030][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.942034][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.942037][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.942041][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.942045][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.942050][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.942053][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.942057][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.942062][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.942064][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.942072][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.942077][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.942080][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.942084][  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))
[   26.942088][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.942090][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.942094][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.942098][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.942100][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.942102][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.942104][  T337]  ? enabled_store (./include/linux/console.h:573 drivers/net/netconsole.c:1037) netconsole
[   26.942107][  T337]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   26.942111][  T337]  _printk (kernel/printk/printk.c:2504)
[   26.942115][  T337]  ? snapshot_read.cold (user.c:?)
[   26.942118][  T337]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 kernel/locking/mutex.c:999)
[   26.942122][  T337]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 (discriminator 1) kernel/locking/mutex.c:999 (discriminator 1))
[   26.942127][  T337]  ? panic_on_this_cpu (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/panic.c:489)
[   26.942131][  T337] netconsole_print_banner (drivers/net/netconsole.c:736 (discriminator 1)) netconsole
[   26.942136][  T337] enabled_store.cold (drivers/net/netconsole.c:1054) netconsole
[   26.942138][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   26.942142][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   26.942144][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   26.942147][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   26.942149][  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))
[   26.942154][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   26.942156][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   26.942158][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   26.942161][  T337]  new_sync_write (fs/read_write.c:595)
[   26.942165][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.942168][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.942171][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   26.942174][  T337]  ? ksys_write (fs/read_write.c:739)
[   26.942180][  T337]  vfs_write (fs/read_write.c:687)
[   26.942185][  T337]  ksys_write (fs/read_write.c:739)
[   26.942188][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.942191][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.942195][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.942199][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   26.942204][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.942207][  T337] RIP: 0033:0x7f9135ca6312
[   26.942211][  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)
[   26.942213][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   26.942216][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9135ca6312
[   26.942218][  T337] RDX: 0000000000000001 RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   26.942219][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   26.942220][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   26.942221][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   27.944823][  T337] softirqs last disabled at (675285): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   27.944826][  T337] Preemption disabled at:
| [   27.944827][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   27.944837][  T337] Tainted: [W]=WARN
[   27.944838][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   27.944840][  T337] Call Trace:
[   27.944842][  T337]  <TASK>
[   27.944843][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.944849][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   27.944851][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.944856][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.944861][  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)
[   27.944866][  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))
[   27.944869][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.944876][  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)
[   27.944879][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.944882][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   27.944886][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.944888][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   27.944892][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.944895][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.944899][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.944903][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.944904][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.944909][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.944913][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.944916][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.944921][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.944925][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.944930][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.944932][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.944937][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.944941][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.944943][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.944949][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.944952][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.944954][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.944956][  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))
[   27.944960][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.944962][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.944966][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.944970][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.944972][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   27.944974][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.944976][  T337]  ? enabled_store (./include/linux/console.h:573 drivers/net/netconsole.c:1037) netconsole
[   27.944978][  T337]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.944982][  T337]  _printk (kernel/printk/printk.c:2504)
[   27.944986][  T337]  ? snapshot_read.cold (user.c:?)
[   27.944989][  T337]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 kernel/locking/mutex.c:999)
[   27.944993][  T337]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 (discriminator 1) kernel/locking/mutex.c:999 (discriminator 1))
[   27.944998][  T337]  ? panic_on_this_cpu (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/panic.c:489)
[   27.945002][  T337] netconsole_print_banner (drivers/net/netconsole.c:735 (discriminator 1)) netconsole
[   27.945007][  T337] enabled_store.cold (drivers/net/netconsole.c:1054) netconsole
[   27.945009][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   27.945013][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   27.945015][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   27.945018][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   27.945020][  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))
[   27.945029][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   27.945032][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   27.945034][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   27.945037][  T337]  new_sync_write (fs/read_write.c:595)
[   27.945041][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.945044][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   27.945048][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.945050][  T337]  ? ksys_write (fs/read_write.c:739)
[   27.945057][  T337]  vfs_write (fs/read_write.c:687)
[   27.945062][  T337]  ksys_write (fs/read_write.c:739)
[   27.945064][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   27.945067][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.945071][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.945075][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   27.945078][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.945080][  T337] RIP: 0033:0x7f9135ca6312
[   27.945084][  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)
[   27.945086][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   27.945089][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9135ca6312
[   27.945091][  T337] RDX: 0000000000000001 RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   27.945092][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   27.945093][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   27.945094][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   28.976668][  T337] softirqs last disabled at (709101): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   28.976671][  T337] Preemption disabled at:
| [   28.976671][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   28.976681][  T337] Tainted: [W]=WARN
[   28.976682][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   28.976684][  T337] Call Trace:
[   28.976685][  T337]  <TASK>
[   28.976687][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.976693][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   28.976695][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.976700][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.976704][  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)
[   28.976710][  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))
[   28.976713][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.976723][  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)
[   28.976727][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.976732][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   28.976737][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.976740][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   28.976745][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   28.976749][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   28.976753][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.976757][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.976758][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.976763][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.976766][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.976769][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.976773][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.976776][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.976781][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.976783][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.976790][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.976796][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.976799][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.976805][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.976810][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.976812][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.976816][  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))
[   28.976821][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.976824][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.976827][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.976831][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.976834][  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)
[   28.976839][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   28.976844][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   28.976850][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   28.976852][  T337]  ? idr_get_free (??:?)
[   28.976856][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   28.976862][  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)
[   28.976866][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   28.976870][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   28.976875][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   28.976879][  T337]  new_sync_write (fs/read_write.c:595)
[   28.976887][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   28.976894][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.976902][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   28.976907][  T337]  vfs_write (fs/read_write.c:687)
[   28.976915][  T337]  ksys_write (fs/read_write.c:739)
[   28.976920][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   28.976925][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.976931][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   28.976935][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   28.976940][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   28.976944][  T337] RIP: 0033:0x7f9135ca6312
[   28.976949][  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)
[   28.976953][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   28.976957][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f9135ca6312
[   28.976959][  T337] RDX: 0000000000000316 RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   28.976961][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   28.976963][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   28.976964][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   29.987403][  T337] softirqs last disabled at (729487): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   29.987406][  T337] Preemption disabled at:
| [   29.987407][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   29.987417][  T337] Tainted: [W]=WARN
[   29.987418][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   29.987420][  T337] Call Trace:
[   29.987422][  T337]  <TASK>
[   29.987423][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   29.987430][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   29.987432][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   29.987437][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   29.987441][  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)
[   29.987446][  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))
[   29.987449][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.987456][  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)
[   29.987459][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   29.987463][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   29.987466][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   29.987468][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   29.987471][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   29.987474][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   29.987478][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   29.987482][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.987484][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.987488][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   29.987492][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.987495][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.987499][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   29.987503][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   29.987507][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.987509][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   29.987513][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   29.987517][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   29.987519][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   29.987524][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   29.987527][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   29.987529][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.987531][  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))
[   29.987535][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   29.987537][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   29.987540][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   29.987544][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   29.987547][  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)
[   29.987553][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   29.987557][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   29.987560][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   29.987563][  T337]  ? idr_get_free (??:?)
[   29.987566][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   29.987569][  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)
[   29.987571][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   29.987574][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   29.987579][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   29.987581][  T337]  new_sync_write (fs/read_write.c:595)
[   29.987587][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   29.987592][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   29.987596][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   29.987600][  T337]  vfs_write (fs/read_write.c:687)
[   29.987604][  T337]  ksys_write (fs/read_write.c:739)
[   29.987607][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   29.987610][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   29.987614][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   29.987617][  T337]  ? common_interrupt (arch/x86/kernel/irq.c:273 (discriminator 18))
[   29.987619][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.987622][  T337] RIP: 0033:0x7f9135ca6312
[   29.987627][  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)
[   29.987628][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   29.987631][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f9135ca6312
[   29.987633][  T337] RDX: 0000000000000316 RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   29.987634][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   29.987635][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   29.987636][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   31.034332][  T337] softirqs last disabled at (747619): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   31.034335][  T337] Preemption disabled at:
| [   31.034335][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   31.034345][  T337] Tainted: [W]=WARN
[   31.034346][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   31.034348][  T337] Call Trace:
[   31.034350][  T337]  <TASK>
[   31.034352][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   31.034358][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   31.034360][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   31.034364][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   31.034368][  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)
[   31.034374][  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))
[   31.034376][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.034383][  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)
[   31.034386][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   31.034390][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   31.034394][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   31.034396][  T337]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   31.034399][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   31.034402][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   31.034406][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   31.034410][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.034412][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.034416][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   31.034420][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.034423][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.034427][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   31.034431][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   31.034435][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.034438][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   31.034442][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   31.034446][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   31.034448][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   31.034453][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   31.034456][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   31.034458][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.034460][  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))
[   31.034464][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   31.034466][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   31.034469][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   31.034473][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   31.034477][  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)
[   31.034482][  T337]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   31.034486][  T337]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   31.034490][  T337]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   31.034492][  T337]  ? idr_get_free (??:?)
[   31.034496][  T337]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   31.034499][  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)
[   31.034502][  T337]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   31.034504][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   31.034509][  T337]  ? vprintk_default (kernel/printk/printk.c:2494)
[   31.034512][  T337]  new_sync_write (fs/read_write.c:595)
[   31.034517][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   31.034522][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   31.034526][  T337]  ? __fget_files (./include/linux/rcupdate.h:882 fs/file.c:1100)
[   31.034530][  T337]  vfs_write (fs/read_write.c:687)
[   31.034534][  T337]  ksys_write (fs/read_write.c:739)
[   31.034537][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   31.034540][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   31.034543][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   31.034546][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   31.034549][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   31.034551][  T337] RIP: 0033:0x7f9135ca6312
[   31.034555][  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)
[   31.034558][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   31.034561][  T337] RAX: ffffffffffffffda RBX: 0000000000000316 RCX: 00007f9135ca6312
[   31.034563][  T337] RDX: 0000000000000316 RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   31.034564][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   31.034565][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   31.034565][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   32.043506][  T337] softirqs last disabled at (779960): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   32.043508][  T337] Preemption disabled at:
| [   32.043509][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   32.043518][  T337] Tainted: [W]=WARN
[   32.043519][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.043521][  T337] Call Trace:
[   32.043524][  T337]  <TASK>
[   32.043526][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.043532][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   32.043534][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.043539][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.043543][  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)
[   32.043548][  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))
[   32.043551][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.043558][  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)
[   32.043561][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.043565][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   32.043568][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.043570][  T337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.043575][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.043577][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.043582][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.043585][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.043591][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.043594][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.043600][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.043605][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.043609][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.043612][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.043616][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.043620][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.043622][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.043628][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.043631][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.043633][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.043635][  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))
[   32.043639][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.043641][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.043644][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.043648][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.043651][  T337]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   32.043653][  T337]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   32.043657][  T337]  _printk (kernel/printk/printk.c:2504)
[   32.043660][  T337]  ? snapshot_read.cold (user.c:?)
[   32.043662][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.043666][  T337]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   32.043668][  T337]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   32.043672][  T337]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   32.043676][  T337]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   32.043681][  T337] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   32.043684][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   32.043688][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   32.043690][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   32.043692][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   32.043695][  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))
[   32.043699][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   32.043701][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   32.043704][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   32.043706][  T337]  new_sync_write (fs/read_write.c:595)
[   32.043710][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.043713][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   32.043717][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.043719][  T337]  ? ksys_write (fs/read_write.c:739)
[   32.043725][  T337]  vfs_write (fs/read_write.c:687)
[   32.043730][  T337]  ksys_write (fs/read_write.c:739)
[   32.043732][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   32.043735][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.043739][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   32.043741][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   32.043745][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.043748][  T337] RIP: 0033:0x7f9135ca6312
[   32.043752][  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)
[   32.043754][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   32.043757][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9135ca6312
[   32.043758][  T337] RDX: 0000000000000001 RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   32.043759][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   32.043760][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390
[   32.043761][  T337] R13: 000055bfbbae22b0 R14: 000000000000000b R15: 00007f9135aa10d0
| [   33.062489][  T337] softirqs last disabled at (803884): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   33.062492][  T337] Preemption disabled at:
| [   33.062492][  T337] vprintk_emit (kernel/printk/printk.c:2471)
| [   33.062502][  T337] Tainted: [W]=WARN
[   33.062503][  T337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.062506][  T337] Call Trace:
[   33.062507][  T337]  <TASK>
[   33.062509][  T337]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   33.062515][  T337]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   33.062517][  T337]  __might_resched.cold (kernel/sched/core.c:9234)
[   33.062522][  T337]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   33.062527][  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)
[   33.062532][  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))
[   33.062535][  T337]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.062541][  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)
[   33.062544][  T337]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.062549][  T337]  put_chars (drivers/char/virtio_console.c:1176)
[   33.062552][  T337]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   33.062554][  T337]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.062559][  T337]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.062561][  T337]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   33.062566][  T337]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   33.062569][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.062575][  T337]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   33.062578][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.062584][  T337]  console_emit_next_record (kernel/printk/printk.c:3183)
[   33.062588][  T337]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   33.062593][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.062595][  T337]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.062601][  T337]  console_flush_one_record (kernel/printk/printk.c:3268)
[   33.062608][  T337]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   33.062610][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.062616][  T337]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   33.062620][  T337]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   33.062621][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.062624][  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))
[   33.062628][  T337]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   33.062630][  T337]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   33.062634][  T337]  vprintk_emit (kernel/printk/printk.c:2479)
[   33.062638][  T337]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   33.062641][  T337]  ? rcu_gp_is_expedited (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/rcu/update.c:196)
[   33.062643][  T337]  ? synchronize_rcu (kernel/rcu/tree.c:3410)
[   33.062647][  T337]  _printk (kernel/printk/printk.c:2504)
[   33.062651][  T337]  ? snapshot_read.cold (user.c:?)
[   33.062653][  T337]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.062658][  T337]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   33.062660][  T337]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   33.062664][  T337]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   33.062668][  T337]  ? __free_object (./include/linux/irqflags.h:266 (discriminator 6) lib/debugobjects.c:536 (discriminator 6))
[   33.062673][  T337] enabled_store.cold (drivers/net/netconsole.c:1071 (discriminator 1)) netconsole
[   33.062676][  T337]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   33.062680][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   33.062682][  T337]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   33.062685][  T337]  ? __kmalloc_cache_noprof (mm/slub.c:5561 (discriminator 1))
[   33.062687][  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))
[   33.062692][  T337]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   33.062694][  T337]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   33.062697][  T337]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   33.062700][  T337]  new_sync_write (fs/read_write.c:595)
[   33.062704][  T337]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.062707][  T337]  ? new_sync_read (./include/linux/ioprio.h:41)
[   33.062711][  T337]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.062713][  T337]  ? ksys_write (fs/read_write.c:739)
[   33.062720][  T337]  vfs_write (fs/read_write.c:687)
[   33.062724][  T337]  ksys_write (fs/read_write.c:739)
[   33.062727][  T337]  ? __ia32_sys_read (fs/read_write.c:723)
[   33.062730][  T337]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.062734][  T337]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   33.062736][  T337]  ? irq_exit_rcu (kernel/softirq.c:786)
[   33.062741][  T337]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   33.062743][  T337] RIP: 0033:0x7f9135ca6312
[   33.062747][  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)
[   33.062749][  T337] RSP: 002b:00007ffc9a5095f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   33.062752][  T337] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9135ca6312
[   33.062754][  T337] RDX: 0000000000000001 RSI: 000055bfbbae22b0 RDI: 000000000000000b
[   33.062755][  T337] RBP: 00007ffc9a509620 R08: 0000000000000000 R09: 0000000000000000
[   33.062756][  T337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9135b13390


Finger prints:
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:kmem_cache_alloc_noprof:__alloc_object