======================================
| [    9.990546][  T171] softirqs last disabled at (29337): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.990549][  T171] Preemption disabled at:
| [    9.990549][  T171] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.990559][  T171] Tainted: [W]=WARN
[    9.990560][  T171] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.990561][  T171] Call Trace:
[    9.990563][  T171]  <TASK>
[    9.990565][  T171]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.990571][  T171]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.990573][  T171]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.990578][  T171]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.990582][  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)
[    9.990586][  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))
[    9.990588][  T171]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.990594][  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)
[    9.990597][  T171]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.990600][  T171]  put_chars (drivers/char/virtio_console.c:1176)
[    9.990603][  T171]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.990606][  T171]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.990611][  T171]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.990618][  T171]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.990620][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.990625][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.990631][  T171]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.990635][  T171]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.990640][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.990642][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.990649][  T171]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.990654][  T171]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.990656][  T171]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.990661][  T171]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.990664][  T171]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.990666][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.990668][  T171]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.990672][  T171]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.990674][  T171]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.990677][  T171]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.990682][  T171]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.990683][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.990688][  T171]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.990689][  T171]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.990694][  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
[    9.990699][  T171]  _printk (kernel/printk/printk.c:2504)
[    9.990703][  T171]  ? snapshot_read.cold (user.c:?)
[    9.990706][  T171]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.990710][  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
[    9.990714][  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)
[    9.990719][  T171] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.990723][  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
[    9.990730][  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
[    9.990734][  T171]  do_one_initcall (init/main.c:1357)
[    9.990738][  T171]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.990744][  T171]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.990746][  T171]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.990752][  T171]  do_init_module (kernel/module/main.c:3117)
[    9.990756][  T171]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.990761][  T171]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.990764][  T171]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.990769][  T171]  load_module (kernel/module/main.c:3593)
[    9.990776][  T171]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.990780][  T171]  ? __ia32_sys_fsconfig (??:?)
[    9.990784][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.990787][  T171]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.990792][  T171]  init_module_from_file (kernel/module/main.c:3790)
[    9.990795][  T171]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.990803][  T171]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.990807][  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)
[    9.990810][  T171]  idempotent_init_module (kernel/module/main.c:3802)
[    9.990814][  T171]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.990821][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.990823][  T171]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.990830][  T171]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.990832][  T171]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.990836][  T171]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.990838][  T171]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.990841][  T171]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.990843][  T171] RIP: 0033:0x7fe442a8a37d
[    9.990847][  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
[    9.990849][  T171] RSP: 002b:00007ffc51024ba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.990852][  T171] RAX: ffffffffffffffda RBX: 000055cef1bbd700 RCX: 00007fe442a8a37d
[    9.990853][  T171] RDX: 0000000000000000 RSI: 000055ceec93dffd RDI: 0000000000000005
[    9.990854][  T171] RBP: 00007ffc51024c40 R08: 0000000000000000 R09: 0000000000000000
[    9.990855][  T171] R10: 0000000000000000 R11: 0000000000000246 R12: 000055ceec93dffd
[    9.990856][  T171] R13: 000055cef1bbd810 R14: 0000000000040000 R15: 0000000000000000
| [   13.632935][  T158] softirqs last disabled at (128701): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   13.632939][  T158] Preemption disabled at:
| [   13.632941][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.632954][  T158] Tainted: [W]=WARN
[   13.632955][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.632957][  T158] Call Trace:
[   13.632960][  T158]  <TASK>
[   13.632962][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.632969][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.632972][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.632979][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.632984][  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)
[   13.632991][  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))
[   13.632995][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.633004][  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)
[   13.633007][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.633012][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   13.633017][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.633019][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.633025][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.633029][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.633036][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.633040][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.633042][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.633050][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.633055][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.633060][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.633066][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.633073][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.633080][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.633083][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.633090][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.633097][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.633099][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.633108][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.633112][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.633115][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.633118][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.633124][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.633127][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.633133][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.633138][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.633143][  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)
[   13.633152][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.633158][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.633164][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.633168][  T158]  ? idr_get_free (??:?)
[   13.633173][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.633178][  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)
[   13.633182][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.633187][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.633189][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.633193][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   13.633200][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.633204][  T158]  new_sync_write (fs/read_write.c:595)
[   13.633211][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.633214][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.633228][  T158]  vfs_write (fs/read_write.c:687)
[   13.633235][  T158]  ksys_write (fs/read_write.c:739)
[   13.633240][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.633243][  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)
[   13.633247][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.633253][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.633256][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.633261][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.633265][  T158] RIP: 0033:0x7fa05f5d654e
[   13.633270][  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
[   13.633273][  T158] RSP: 002b:00007ffd8f745920 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.633277][  T158] RAX: ffffffffffffffda RBX: 00007fa05f757580 RCX: 00007fa05f5d654e
[   13.633279][  T158] RDX: 0000000000000023 RSI: 00005587561ed790 RDI: 0000000000000001
[   13.633281][  T158] RBP: 00007ffd8f745930 R08: 0000000000000000 R09: 0000000000000000
[   13.633282][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   13.633284][  T158] R13: 0000000000000023 R14: 00005587561ed790 R15: 0000000000000000
| [   15.473481][  T158] softirqs last disabled at (162420): 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))
| [   15.473483][  T158] Preemption disabled at:
| [   15.473484][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.473493][  T158] Tainted: [W]=WARN
[   15.473494][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.473496][  T158] Call Trace:
[   15.473497][  T158]  <TASK>
[   15.473499][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.473505][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.473507][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.473511][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.473515][  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)
[   15.473520][  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))
[   15.473522][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.473528][  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)
[   15.473530][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.473534][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   15.473537][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.473538][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.473542][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.473545][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.473549][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.473552][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.473553][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.473558][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.473561][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.473564][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.473568][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.473572][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.473576][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.473578][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.473582][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.473586][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.473588][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.473593][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.473596][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.473597][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.473599][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.473603][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.473605][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.473608][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.473611][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.473614][  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)
[   15.473620][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.473624][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.473632][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.473634][  T158]  ? idr_get_free (??:?)
[   15.473638][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.473641][  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)
[   15.473644][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.473647][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.473648][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.473651][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.473655][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.473658][  T158]  new_sync_write (fs/read_write.c:595)
[   15.473670][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.473671][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.473679][  T158]  vfs_write (fs/read_write.c:687)
[   15.473684][  T158]  ksys_write (fs/read_write.c:739)
[   15.473687][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.473688][  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)
[   15.473691][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.473695][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.473697][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.473700][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.473703][  T158] RIP: 0033:0x7fa05f5d654e
[   15.473707][  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
[   15.473709][  T158] RSP: 002b:00007ffd8f745920 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.473712][  T158] RAX: ffffffffffffffda RBX: 00007fa05f757580 RCX: 00007fa05f5d654e
[   15.473714][  T158] RDX: 0000000000000023 RSI: 00005587561ed790 RDI: 0000000000000001
[   15.473715][  T158] RBP: 00007ffd8f745930 R08: 0000000000000000 R09: 0000000000000000
[   15.473716][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.473717][  T158] R13: 0000000000000023 R14: 00005587561ed790 R15: 0000000000000000
| [   17.114133][  T158] softirqs last disabled at (191710): 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))
| [   17.114137][  T158] Preemption disabled at:
| [   17.114138][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.114150][  T158] Tainted: [W]=WARN
[   17.114152][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.114155][  T158] Call Trace:
[   17.114157][  T158]  <TASK>
[   17.114159][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.114166][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.114169][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.114175][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.114181][  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)
[   17.114187][  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))
[   17.114191][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.114200][  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)
[   17.114203][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.114208][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   17.114213][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.114215][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   17.114221][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.114225][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.114232][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.114236][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.114238][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.114246][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.114251][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.114256][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.114262][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.114268][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.114276][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.114279][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.114286][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.114293][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.114295][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.114304][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.114308][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.114311][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.114315][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.114321][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.114324][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.114329][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.114335][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.114340][  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)
[   17.114348][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   17.114354][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   17.114360][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   17.114363][  T158]  ? idr_get_free (??:?)
[   17.114367][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   17.114373][  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)
[   17.114377][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   17.114381][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.114384][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.114388][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   17.114394][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.114398][  T158]  new_sync_write (fs/read_write.c:595)
[   17.114406][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.114409][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.114423][  T158]  vfs_write (fs/read_write.c:687)
[   17.114431][  T158]  ksys_write (fs/read_write.c:739)
[   17.114435][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.114438][  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)
[   17.114442][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.114448][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.114451][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.114456][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.114460][  T158] RIP: 0033:0x7fa05f5d654e
[   17.114465][  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
[   17.114468][  T158] RSP: 002b:00007ffd8f745920 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.114472][  T158] RAX: ffffffffffffffda RBX: 00007fa05f757580 RCX: 00007fa05f5d654e
[   17.114475][  T158] RDX: 0000000000000023 RSI: 00005587561ed790 RDI: 0000000000000001
[   17.114476][  T158] RBP: 00007ffd8f745930 R08: 0000000000000000 R09: 0000000000000000
[   17.114478][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   17.114479][  T158] R13: 0000000000000023 R14: 00005587561ed790 R15: 0000000000000000
| [   18.670828][  T158] softirqs last disabled at (215193): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   18.670831][  T158] Preemption disabled at:
| [   18.670832][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   18.670841][  T158] Tainted: [W]=WARN
[   18.670842][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.670844][  T158] Call Trace:
[   18.670846][  T158]  <TASK>
[   18.670848][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.670853][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   18.670855][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.670860][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.670864][  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)
[   18.670869][  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))
[   18.670871][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.670877][  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)
[   18.670880][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.670883][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   18.670886][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.670887][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   18.670891][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.670894][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.670898][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.670901][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.670903][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.670907][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.670910][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.670913][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.670917][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.670921][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.670925][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.670927][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.670931][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.670935][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.670937][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.670942][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.670945][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.670946][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.670949][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.670952][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.670954][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.670957][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.670960][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.670963][  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)
[   18.670970][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   18.670974][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   18.670978][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   18.670980][  T158]  ? idr_get_free (??:?)
[   18.670984][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   18.670987][  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)
[   18.670990][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   18.670992][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.670994][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.670996][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   18.671001][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.671003][  T158]  new_sync_write (fs/read_write.c:595)
[   18.671008][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   18.671010][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.671018][  T158]  vfs_write (fs/read_write.c:687)
[   18.671022][  T158]  ksys_write (fs/read_write.c:739)
[   18.671025][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   18.671027][  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)
[   18.671030][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.671033][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.671035][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.671039][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.671041][  T158] RIP: 0033:0x7fa05f5d654e
[   18.671045][  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
[   18.671047][  T158] RSP: 002b:00007ffd8f745920 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   18.671051][  T158] RAX: ffffffffffffffda RBX: 00007fa05f757580 RCX: 00007fa05f5d654e
[   18.671052][  T158] RDX: 0000000000000023 RSI: 00005587561ed790 RDI: 0000000000000001
[   18.671053][  T158] RBP: 00007ffd8f745930 R08: 0000000000000000 R09: 0000000000000000
[   18.671054][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   18.671055][  T158] R13: 0000000000000023 R14: 00005587561ed790 R15: 0000000000000000
| [   26.634582][  T726] softirqs last disabled at (3294): 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))
| [   26.634584][  T726] Preemption disabled at:
| [   26.634585][  T726] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.634595][  T726] Tainted: [W]=WARN
[   26.634596][  T726] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.634598][  T726] Call Trace:
[   26.634600][  T726]  <TASK>
[   26.634602][  T726]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.634607][  T726]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.634609][  T726]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.634614][  T726]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.634618][  T726]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.634623][  T726]  __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))
[   26.634628][  T726]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.634634][  T726]  ? 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)
[   26.634637][  T726]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.634640][  T726]  put_chars (drivers/char/virtio_console.c:1176)
[   26.634643][  T726]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.634644][  T726]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.634648][  T726]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.634651][  T726]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.634655][  T726]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.634658][  T726]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.634660][  T726]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.634664][  T726]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.634667][  T726]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.634670][  T726]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.634674][  T726]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.634678][  T726]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.634682][  T726]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.634684][  T726]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.634688][  T726]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.634691][  T726]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.634693][  T726]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.634698][  T726]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.634701][  T726]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.634708][  T726]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.634710][  T726]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   26.634713][  T726]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.634715][  T726]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.634718][  T726]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.634721][  T726]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.634724][  T726]  ? _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)
[   26.634730][  T726]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   26.634735][  T726]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   26.634739][  T726]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   26.634740][  T726]  ? idr_get_free (??:?)
[   26.634745][  T726]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   26.634748][  T726]  ? _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)
[   26.634750][  T726]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   26.634753][  T726]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.634755][  T726]  ? handle_pte_fault (mm/memory.c:6558)
[   26.634760][  T726]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   26.634762][  T726]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.634765][  T726]  new_sync_write (fs/read_write.c:595)
[   26.634770][  T726]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.634771][  T726]  ? 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))
[   26.634779][  T726]  vfs_write (fs/read_write.c:687)
[   26.634784][  T726]  ksys_write (fs/read_write.c:739)
[   26.634786][  T726]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.634789][  T726]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.634791][  T726]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.634794][  T726]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.634796][  T726]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.634799][  T726]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.634802][  T726] RIP: 0033:0x7fa05f5d654e
[   26.634805][  T726] 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
[   26.634807][  T726] RSP: 002b:00007ffd8f7450f0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   26.634810][  T726] RAX: ffffffffffffffda RBX: 00007fa05f757580 RCX: 00007fa05f5d654e
[   26.634812][  T726] RDX: 0000000000000025 RSI: 00005587561ed790 RDI: 0000000000000001
[   26.634813][  T726] RBP: 00007ffd8f745100 R08: 0000000000000000 R09: 0000000000000000
[   26.634814][  T726] 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