======================================
| [   10.714155][  T171] softirqs last disabled at (27573): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.714158][  T171] Preemption disabled at:
| [   10.714159][  T171] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.714167][  T171] Tainted: [W]=WARN
[   10.714168][  T171] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.714170][  T171] Call Trace:
[   10.714171][  T171]  <TASK>
[   10.714173][  T171]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.714179][  T171]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.714181][  T171]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.714185][  T171]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.714189][  T171]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.714193][  T171]  __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))
[   10.714195][  T171]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.714201][  T171]  ? 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)
[   10.714204][  T171]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.714207][  T171]  put_chars (drivers/char/virtio_console.c:1176)
[   10.714210][  T171]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.714213][  T171]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.714217][  T171]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.714223][  T171]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.714226][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.714229][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.714233][  T171]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.714237][  T171]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.714241][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.714243][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.714247][  T171]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.714251][  T171]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.714252][  T171]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.714257][  T171]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.714260][  T171]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.714261][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.714264][  T171]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.714267][  T171]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.714268][  T171]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.714271][  T171]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.714275][  T171]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.714277][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.714281][  T171]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.714282][  T171]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.714287][  T171]  ? 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
[   10.714291][  T171]  _printk (kernel/printk/printk.c:2504)
[   10.714295][  T171]  ? snapshot_read.cold (user.c:?)
[   10.714298][  T171]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.714301][  T171]  ? 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
[   10.714305][  T171]  ? 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)
[   10.714310][  T171] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.714314][  T171]  ? 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
[   10.714321][  T171]  ? 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
[   10.714323][  T171]  do_one_initcall (init/main.c:1357)
[   10.714327][  T171]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.714332][  T171]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.714334][  T171]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.714340][  T171]  do_init_module (kernel/module/main.c:3117)
[   10.714343][  T171]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.714347][  T171]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.714350][  T171]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.714354][  T171]  load_module (kernel/module/main.c:3593)
[   10.714361][  T171]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.714365][  T171]  ? __ia32_sys_fsconfig (??:?)
[   10.714368][  T171]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.714371][  T171]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.714375][  T171]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.714379][  T171]  init_module_from_file (kernel/module/main.c:3790)
[   10.714383][  T171]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.714390][  T171]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.714394][  T171]  ? 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)
[   10.714396][  T171]  idempotent_init_module (kernel/module/main.c:3802)
[   10.714400][  T171]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.714406][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.714408][  T171]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.714413][  T171]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.714415][  T171]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.714419][  T171]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.714421][  T171]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.714424][  T171]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.714426][  T171] RIP: 0033:0x7f1157ec237d
[   10.714430][  T171] 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
[   10.714432][  T171] RSP: 002b:00007ffe4addff28 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.714434][  T171] RAX: ffffffffffffffda RBX: 0000557be186c700 RCX: 00007f1157ec237d
[   10.714436][  T171] RDX: 0000000000000000 RSI: 0000557ba5951ffd RDI: 0000000000000005
[   10.714437][  T171] RBP: 00007ffe4addffc0 R08: 0000000000000000 R09: 0000000000000000
[   10.714437][  T171] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557ba5951ffd
[   10.714438][  T171] R13: 0000557be186c810 R14: 0000000000040000 R15: 0000000000000000
| [   14.224008][  T158] softirqs last disabled at (136707): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   14.224011][  T158] Preemption disabled at:
| [   14.224012][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.224022][  T158] Tainted: [W]=WARN
[   14.224023][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.224024][  T158] Call Trace:
[   14.224026][  T158]  <TASK>
[   14.224028][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.224034][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.224036][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.224040][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.224044][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.224049][  T158]  __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))
[   14.224051][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.224057][  T158]  ? 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)
[   14.224059][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.224063][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   14.224066][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.224067][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.224071][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.224074][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.224078][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.224081][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.224082][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.224086][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.224090][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.224093][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.224096][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.224100][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.224104][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.224106][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.224110][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.224114][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.224116][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.224121][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.224123][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.224125][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.224127][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.224131][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.224132][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.224136][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.224139][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.224142][  T158]  ? _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)
[   14.224148][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.224152][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.224156][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.224158][  T158]  ? idr_get_free (??:?)
[   14.224162][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.224165][  T158]  ? _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)
[   14.224167][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.224170][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.224172][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   14.224177][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   14.224179][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.224182][  T158]  new_sync_write (fs/read_write.c:595)
[   14.224187][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.224188][  T158]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   14.224196][  T158]  vfs_write (fs/read_write.c:687)
[   14.224201][  T158]  ksys_write (fs/read_write.c:739)
[   14.224204][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.224206][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.224208][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.224212][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.224214][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.224217][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.224220][  T158] RIP: 0033:0x7fbe2432854e
[   14.224224][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   14.224226][  T158] RSP: 002b:00007ffff853e7c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.224229][  T158] RAX: ffffffffffffffda RBX: 00007fbe244a9580 RCX: 00007fbe2432854e
[   14.224230][  T158] RDX: 0000000000000023 RSI: 000055b4c9857790 RDI: 0000000000000001
[   14.224231][  T158] RBP: 00007ffff853e7d0 R08: 0000000000000000 R09: 0000000000000000
[   14.224232][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   14.224233][  T158] R13: 0000000000000023 R14: 000055b4c9857790 R15: 0000000000000000
| [   15.777038][  T158] softirqs last disabled at (166803): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   15.777041][  T158] Preemption disabled at:
| [   15.777042][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.777052][  T158] Tainted: [W]=WARN
[   15.777053][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.777055][  T158] Call Trace:
[   15.777057][  T158]  <TASK>
[   15.777059][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.777064][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.777067][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.777071][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.777075][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.777080][  T158]  __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))
[   15.777082][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.777088][  T158]  ? 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)
[   15.777090][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.777094][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   15.777097][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.777098][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.777102][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.777105][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.777109][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.777112][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.777113][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.777117][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.777121][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.777124][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.777128][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.777131][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.777136][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.777138][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.777142][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.777146][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.777147][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.777152][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.777155][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.777157][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.777159][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.777163][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.777164][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.777167][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.777171][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.777174][  T158]  ? _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)
[   15.777180][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.777184][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.777188][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.777190][  T158]  ? idr_get_free (??:?)
[   15.777194][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.777197][  T158]  ? _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)
[   15.777200][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.777203][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.777205][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.777207][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.777211][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.777214][  T158]  new_sync_write (fs/read_write.c:595)
[   15.777219][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.777220][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.777229][  T158]  vfs_write (fs/read_write.c:687)
[   15.777233][  T158]  ksys_write (fs/read_write.c:739)
[   15.777236][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.777237][  T158]  ? 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)
[   15.777240][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.777244][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.777246][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.777249][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.777252][  T158] RIP: 0033:0x7fbe2432854e
[   15.777256][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   15.777258][  T158] RSP: 002b:00007ffff853e7c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.777261][  T158] RAX: ffffffffffffffda RBX: 00007fbe244a9580 RCX: 00007fbe2432854e
[   15.777263][  T158] RDX: 0000000000000023 RSI: 000055b4c9857790 RDI: 0000000000000001
[   15.777264][  T158] RBP: 00007ffff853e7d0 R08: 0000000000000000 R09: 0000000000000000
[   15.777265][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.777266][  T158] R13: 0000000000000023 R14: 000055b4c9857790 R15: 0000000000000000
| [   17.264010][  T158] softirqs last disabled at (186851): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   17.264014][  T158] Preemption disabled at:
| [   17.264015][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.264028][  T158] Tainted: [W]=WARN
[   17.264029][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.264031][  T158] Call Trace:
[   17.264033][  T158]  <TASK>
[   17.264035][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.264041][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.264044][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.264051][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.264056][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   17.264061][  T158]  __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))
[   17.264064][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.264072][  T158]  ? 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)
[   17.264076][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.264081][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   17.264086][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.264088][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   17.264091][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.264094][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.264101][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.264105][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.264107][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.264115][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.264119][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.264121][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.264126][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.264132][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.264139][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.264143][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.264147][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.264151][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.264153][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.264161][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.264165][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.264167][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.264171][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.264176][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.264178][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.264181][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.264187][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.264192][  T158]  ? _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)
[   17.264201][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   17.264205][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   17.264209][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   17.264212][  T158]  ? idr_get_free (??:?)
[   17.264216][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   17.264221][  T158]  ? _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)
[   17.264226][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   17.264230][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.264232][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.264234][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   17.264241][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.264245][  T158]  new_sync_write (fs/read_write.c:595)
[   17.264253][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.264256][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.264265][  T158]  vfs_write (fs/read_write.c:687)
[   17.264269][  T158]  ksys_write (fs/read_write.c:739)
[   17.264273][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.264276][  T158]  ? 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)
[   17.264280][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.264286][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.264289][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.264293][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.264295][  T158] RIP: 0033:0x7fbe2432854e
[   17.264300][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   17.264302][  T158] RSP: 002b:00007ffff853e7c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.264307][  T158] RAX: ffffffffffffffda RBX: 00007fbe244a9580 RCX: 00007fbe2432854e
[   17.264309][  T158] RDX: 0000000000000023 RSI: 000055b4c9857790 RDI: 0000000000000001
[   17.264310][  T158] RBP: 00007ffff853e7d0 R08: 0000000000000000 R09: 0000000000000000
[   17.264312][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   17.264314][  T158] R13: 0000000000000023 R14: 000055b4c9857790 R15: 0000000000000000
| [   18.890044][  T158] softirqs last disabled at (211708): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   18.890048][  T158] Preemption disabled at:
| [   18.890049][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   18.890061][  T158] Tainted: [W]=WARN
[   18.890063][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.890066][  T158] Call Trace:
[   18.890069][  T158]  <TASK>
[   18.890071][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.890078][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   18.890081][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.890088][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.890094][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.890101][  T158]  __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))
[   18.890106][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.890115][  T158]  ? 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)
[   18.890119][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.890125][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   18.890130][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.890132][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   18.890138][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.890142][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.890149][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.890153][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.890155][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.890163][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.890168][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.890173][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.890179][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.890186][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.890193][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.890197][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.890203][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.890209][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.890212][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.890221][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.890226][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.890228][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.890232][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.890238][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.890240][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.890246][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.890251][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.890258][  T158]  ? _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)
[   18.890267][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   18.890273][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   18.890279][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   18.890283][  T158]  ? idr_get_free (??:?)
[   18.890287][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   18.890292][  T158]  ? _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)
[   18.890297][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   18.890302][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.890306][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.890308][  T158]  ? assoc_array_insert_into_terminal_node.isra.0 (lib/assoc_array.c:559)
[   18.890313][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.890317][  T158]  new_sync_write (fs/read_write.c:595)
[   18.890322][  T158]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.890324][  T158]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   18.890330][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   18.890332][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.890343][  T158]  ? clockevents_program_event (kernel/time/clockevents.c:372)
[   18.890350][  T158]  vfs_write (fs/read_write.c:687)
[   18.890357][  T158]  ksys_write (fs/read_write.c:739)
[   18.890361][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   18.890365][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.890369][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.890374][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.890377][  T158]  ? irq_exit_rcu (kernel/softirq.c:786)
[   18.890384][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.890387][  T158] RIP: 0033:0x7fbe2432854e
[   18.890393][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   18.890396][  T158] RSP: 002b:00007ffff853e7c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   18.890401][  T158] RAX: ffffffffffffffda RBX: 00007fbe244a9580 RCX: 00007fbe2432854e
[   18.890403][  T158] RDX: 0000000000000023 RSI: 000055b4c9857790 RDI: 0000000000000001
[   18.890404][  T158] RBP: 00007ffff853e7d0 R08: 0000000000000000 R09: 0000000000000000
[   18.890406][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   18.890407][  T158] R13: 0000000000000023 R14: 000055b4c9857790 R15: 0000000000000000
| [   26.939467][  T713] softirqs last disabled at (2208): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   26.939469][  T713] Preemption disabled at:
| [   26.939470][  T713] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.939480][  T713] Tainted: [W]=WARN
[   26.939481][  T713] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.939483][  T713] Call Trace:
[   26.939485][  T713]  <TASK>
[   26.939487][  T713]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.939493][  T713]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.939495][  T713]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.939501][  T713]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.939505][  T713]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.939511][  T713]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   26.939513][  T713]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.939519][  T713]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   26.939522][  T713]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.939526][  T713]  put_chars (drivers/char/virtio_console.c:1176)
[   26.939536][  T713]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.939538][  T713]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.939542][  T713]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.939545][  T713]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.939550][  T713]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.939553][  T713]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.939555][  T713]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.939560][  T713]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.939564][  T713]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.939567][  T713]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.939571][  T713]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.939575][  T713]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.939580][  T713]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.939582][  T713]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.939586][  T713]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.939591][  T713]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.939593][  T713]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.939598][  T713]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.939601][  T713]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.939603][  T713]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.939605][  T713]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   26.939609][  T713]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.939611][  T713]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.939614][  T713]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.939618][  T713]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.939622][  T713]  ? _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)
[   26.939628][  T713]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   26.939632][  T713]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   26.939636][  T713]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   26.939638][  T713]  ? idr_get_free (??:?)
[   26.939642][  T713]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   26.939646][  T713]  ? _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)
[   26.939649][  T713]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   26.939652][  T713]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.939654][  T713]  ? handle_pte_fault (mm/memory.c:6558)
[   26.939659][  T713]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   26.939661][  T713]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.939664][  T713]  new_sync_write (fs/read_write.c:595)
[   26.939669][  T713]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.939671][  T713]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   26.939681][  T713]  vfs_write (fs/read_write.c:687)
[   26.939685][  T713]  ksys_write (fs/read_write.c:739)
[   26.939688][  T713]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.939691][  T713]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.939693][  T713]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.939697][  T713]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.939700][  T713]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.939703][  T713]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.939705][  T713] RIP: 0033:0x7fbe2432854e
[   26.939709][  T713] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   26.939711][  T713] RSP: 002b:00007ffff853df90 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   26.939715][  T713] RAX: ffffffffffffffda RBX: 00007fbe244a9580 RCX: 00007fbe2432854e
[   26.939716][  T713] RDX: 0000000000000025 RSI: 000055b4c9857790 RDI: 0000000000000001
[   26.939717][  T713] RBP: 00007ffff853dfa0 R08: 0000000000000000 R09: 0000000000000000
[   26.939719][  T713] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025


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