======================================
| [    8.716842][  T170] softirqs last disabled at (30869): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    8.716844][  T170] Preemption disabled at:
| [    8.716845][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [    8.716854][  T170] Tainted: [W]=WARN
[    8.716855][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    8.716856][  T170] Call Trace:
[    8.716858][  T170]  <TASK>
[    8.716860][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    8.716865][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    8.716867][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[    8.716871][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    8.716875][  T170]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    8.716879][  T170]  __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))
[    8.716881][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.716887][  T170]  ? 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)
[    8.716890][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    8.716893][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[    8.716896][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    8.716898][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    8.716903][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    8.716909][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    8.716911][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.716915][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.716919][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[    8.716922][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    8.716926][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.716928][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    8.716932][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[    8.716936][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    8.716937][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    8.716942][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    8.716944][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    8.716946][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.716948][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    8.716951][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    8.716953][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    8.716956][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[    8.716959][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    8.716961][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    8.716965][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    8.716966][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    8.716971][  T170]  ? 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
[    8.716974][  T170]  _printk (kernel/printk/printk.c:2504)
[    8.716978][  T170]  ? snapshot_read.cold (user.c:?)
[    8.716981][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    8.716984][  T170]  ? 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
[    8.716988][  T170]  ? 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)
[    8.716992][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    8.716995][  T170]  ? 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
[    8.717002][  T170]  ? 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
[    8.717005][  T170]  do_one_initcall (init/main.c:1357)
[    8.717008][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    8.717013][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    8.717016][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    8.717021][  T170]  do_init_module (kernel/module/main.c:3117)
[    8.717024][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    8.717029][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    8.717031][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    8.717040][  T170]  load_module (kernel/module/main.c:3593)
[    8.717047][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    8.717050][  T170]  ? __ia32_sys_fsconfig (??:?)
[    8.717053][  T170]  ? ovl_real_file (fs/overlayfs/file.c:195)
[    8.717056][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    8.717058][  T170]  ? backing_file_read_iter (fs/backing-file.c:211)
[    8.717062][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    8.717066][  T170]  init_module_from_file (kernel/module/main.c:3790)
[    8.717069][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    8.717077][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    8.717080][  T170]  ? 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)
[    8.717083][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[    8.717086][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[    8.717092][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    8.717094][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    8.717099][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    8.717101][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    8.717106][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    8.717107][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    8.717110][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    8.717112][  T170] RIP: 0033:0x7f1bd251b37d
[    8.717115][  T170] 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
[    8.717117][  T170] RSP: 002b:00007ffce8b34608 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    8.717120][  T170] RAX: ffffffffffffffda RBX: 000055b320178700 RCX: 00007f1bd251b37d
[    8.717121][  T170] RDX: 0000000000000000 RSI: 000055b2f46dcffd RDI: 0000000000000005
[    8.717122][  T170] RBP: 00007ffce8b346a0 R08: 0000000000000000 R09: 0000000000000000
[    8.717123][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b2f46dcffd
[    8.717124][  T170] R13: 000055b320178810 R14: 0000000000040000 R15: 0000000000000000
| [   11.796023][  T158] softirqs last disabled at (140344): 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))
| [   11.796025][  T158] Preemption disabled at:
| [   11.796026][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.796035][  T158] Tainted: [W]=WARN
[   11.796036][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.796038][  T158] Call Trace:
[   11.796039][  T158]  <TASK>
[   11.796041][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.796052][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.796054][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.796059][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.796062][  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)
[   11.796067][  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))
[   11.796069][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.796075][  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)
[   11.796077][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.796080][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   11.796083][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.796085][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   11.796088][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.796091][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.796095][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.796098][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.796099][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.796103][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.796106][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.796109][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.796113][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.796116][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.796120][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.796122][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.796126][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.796130][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.796131][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.796136][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.796139][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.796140][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.796142][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.796146][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.796147][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.796150][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.796153][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.796156][  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)
[   11.796162][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   11.796166][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   11.796170][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   11.796172][  T158]  ? idr_get_free (??:?)
[   11.796176][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   11.796179][  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)
[   11.796181][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   11.796184][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   11.796186][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.796188][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   11.796192][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   11.796195][  T158]  new_sync_write (fs/read_write.c:595)
[   11.796199][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   11.796201][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.796208][  T158]  vfs_write (fs/read_write.c:687)
[   11.796212][  T158]  ksys_write (fs/read_write.c:739)
[   11.796215][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   11.796217][  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)
[   11.796219][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.796223][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.796225][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.796228][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.796231][  T158] RIP: 0033:0x7f0c9e1be54e
[   11.796234][  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
[   11.796236][  T158] RSP: 002b:00007ffdc8d39d30 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   11.796239][  T158] RAX: ffffffffffffffda RBX: 00007f0c9e33f580 RCX: 00007f0c9e1be54e
[   11.796240][  T158] RDX: 0000000000000023 RSI: 0000564eb5effab0 RDI: 0000000000000001
[   11.796241][  T158] RBP: 00007ffdc8d39d40 R08: 0000000000000000 R09: 0000000000000000
[   11.796242][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   11.796243][  T158] R13: 0000000000000023 R14: 0000564eb5effab0 R15: 0000000000000000
| [   15.244828][  T158] softirqs last disabled at (249348): 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))
| [   15.244830][  T158] Preemption disabled at:
| [   15.244831][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.244840][  T158] Tainted: [W]=WARN
[   15.244841][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.244844][  T158] Call Trace:
[   15.244846][  T158]  <TASK>
[   15.244847][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.244852][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.244854][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.244859][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.244862][  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)
[   15.244867][  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))
[   15.244869][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.244875][  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)
[   15.244877][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.244881][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   15.244884][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.244885][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.244888][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.244891][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.244895][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.244898][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.244900][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.244904][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.244907][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.244910][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.244913][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.244917][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.244921][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.244923][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.244927][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.244931][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.244932][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.244937][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.244940][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.244941][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.244943][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.244947][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.244948][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.244951][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.244955][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.244958][  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)
[   15.244963][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.244967][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.244971][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.244973][  T158]  ? idr_get_free (??:?)
[   15.244977][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.244980][  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)
[   15.244983][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.244985][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.244987][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.244989][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.244993][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.244996][  T158]  new_sync_write (fs/read_write.c:595)
[   15.245001][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.245002][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.245010][  T158]  vfs_write (fs/read_write.c:687)
[   15.245014][  T158]  ksys_write (fs/read_write.c:739)
[   15.245017][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.245019][  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)
[   15.245021][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.245025][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.245027][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.245030][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.245032][  T158] RIP: 0033:0x7f0c9e1be54e
[   15.245036][  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
[   15.245038][  T158] RSP: 002b:00007ffdc8d39d30 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.245041][  T158] RAX: ffffffffffffffda RBX: 00007f0c9e33f580 RCX: 00007f0c9e1be54e
[   15.245042][  T158] RDX: 0000000000000023 RSI: 0000564eb5effab0 RDI: 0000000000000001
[   15.245043][  T158] RBP: 00007ffdc8d39d40 R08: 0000000000000000 R09: 0000000000000000
[   15.245044][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.245045][  T158] R13: 0000000000000023 R14: 0000564eb5effab0 R15: 0000000000000000
| [   18.668750][  T158] softirqs last disabled at (354344): 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))
| [   18.668753][  T158] Preemption disabled at:
| [   18.668753][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   18.668762][  T158] Tainted: [W]=WARN
[   18.668763][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.668765][  T158] Call Trace:
[   18.668767][  T158]  <TASK>
[   18.668768][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.668773][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   18.668775][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.668779][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.668783][  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)
[   18.668788][  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))
[   18.668790][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.668795][  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)
[   18.668798][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.668801][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   18.668803][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.668805][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   18.668808][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.668811][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.668815][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.668818][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.668819][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.668823][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.668826][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.668829][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.668833][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.668836][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.668840][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.668842][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.668846][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.668849][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.668851][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.668856][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.668858][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.668860][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.668862][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.668865][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.668867][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.668870][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.668873][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.668876][  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)
[   18.668882][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   18.668885][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   18.668889][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   18.668891][  T158]  ? idr_get_free (??:?)
[   18.668895][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   18.668898][  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)
[   18.668900][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   18.668903][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.668905][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.668907][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   18.668911][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.668913][  T158]  new_sync_write (fs/read_write.c:595)
[   18.668918][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   18.668919][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.668927][  T158]  vfs_write (fs/read_write.c:687)
[   18.668931][  T158]  ksys_write (fs/read_write.c:739)
[   18.668934][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   18.668935][  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)
[   18.668938][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.668941][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.668944][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.668947][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.668949][  T158] RIP: 0033:0x7f0c9e1be54e
[   18.668953][  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
[   18.668955][  T158] RSP: 002b:00007ffdc8d39d30 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   18.668958][  T158] RAX: ffffffffffffffda RBX: 00007f0c9e33f580 RCX: 00007f0c9e1be54e
[   18.668959][  T158] RDX: 0000000000000023 RSI: 0000564eb5effab0 RDI: 0000000000000001
[   18.668960][  T158] RBP: 00007ffdc8d39d40 R08: 0000000000000000 R09: 0000000000000000
[   18.668961][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   18.668962][  T158] R13: 0000000000000023 R14: 0000564eb5effab0 R15: 0000000000000000
| [   22.255955][  T158] softirqs last disabled at (470074): 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))
| [   22.255958][  T158] Preemption disabled at:
| [   22.255958][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.255967][  T158] Tainted: [W]=WARN
[   22.255968][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.255971][  T158] Call Trace:
[   22.255972][  T158]  <TASK>
[   22.255974][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.255979][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.255981][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.255986][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.255989][  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)
[   22.255994][  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))
[   22.255997][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.256002][  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)
[   22.256005][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.256008][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   22.256011][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.256013][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   22.256016][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   22.256019][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   22.256024][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.256027][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.256028][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.256032][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.256036][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.256038][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.256042][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.256046][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.256050][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.256052][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.256056][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.256060][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.256062][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.256067][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.256070][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.256071][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.256074][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   22.256082][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.256084][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.256087][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.256091][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.256094][  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)
[   22.256100][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   22.256104][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   22.256108][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   22.256110][  T158]  ? idr_get_free (??:?)
[   22.256114][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   22.256117][  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)
[   22.256120][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   22.256123][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   22.256124][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   22.256129][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   22.256132][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   22.256134][  T158]  new_sync_write (fs/read_write.c:595)
[   22.256139][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   22.256141][  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))
[   22.256149][  T158]  vfs_write (fs/read_write.c:687)
[   22.256153][  T158]  ksys_write (fs/read_write.c:739)
[   22.256156][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   22.256158][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.256161][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.256164][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.256166][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.256170][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.256172][  T158] RIP: 0033:0x7f0c9e1be54e
[   22.256176][  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
[   22.256178][  T158] RSP: 002b:00007ffdc8d39d30 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   22.256181][  T158] RAX: ffffffffffffffda RBX: 00007f0c9e33f580 RCX: 00007f0c9e1be54e
[   22.256182][  T158] RDX: 0000000000000023 RSI: 0000564eb5effab0 RDI: 0000000000000001
[   22.256184][  T158] RBP: 00007ffdc8d39d40 R08: 0000000000000000 R09: 0000000000000000
[   22.256185][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023


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