======================================
| [    9.579801][  T170] softirqs last disabled at (27393): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.579804][  T170] Preemption disabled at:
| [    9.579805][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.579817][  T170] Tainted: [W]=WARN
[    9.579818][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.579820][  T170] Call Trace:
[    9.579823][  T170]  <TASK>
[    9.579825][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.579832][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.579835][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.579841][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.579846][  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)
[    9.579853][  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))
[    9.579857][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.579866][  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)
[    9.579869][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.579874][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[    9.579879][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.579884][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.579893][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.579903][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.579907][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.579912][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.579919][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.579925][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.579932][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.579936][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.579942][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.579949][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.579952][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.579961][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.579965][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.579968][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.579971][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.579977][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.579979][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.579985][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.579991][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.579994][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.580000][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.580002][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.580008][  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
[    9.580014][  T170]  _printk (kernel/printk/printk.c:2504)
[    9.580020][  T170]  ? snapshot_read.cold (user.c:?)
[    9.580024][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.580030][  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
[    9.580037][  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)
[    9.580044][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.580049][  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
[    9.580062][  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
[    9.580067][  T170]  do_one_initcall (init/main.c:1357)
[    9.580072][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.580081][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.580085][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.580093][  T170]  do_init_module (kernel/module/main.c:3117)
[    9.580099][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.580105][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.580110][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.580117][  T170]  load_module (kernel/module/main.c:3593)
[    9.580129][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.580135][  T170]  ? __ia32_sys_fsconfig (??:?)
[    9.580141][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.580145][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.580152][  T170]  init_module_from_file (kernel/module/main.c:3790)
[    9.580158][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.580173][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.580178][  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)
[    9.580183][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[    9.580189][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.580200][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.580203][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.580213][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.580215][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.580222][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.580225][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.580229][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.580233][  T170] RIP: 0033:0x7fdb4ba5937d
[    9.580237][  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
[    9.580240][  T170] RSP: 002b:00007fff079c9788 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.580244][  T170] RAX: ffffffffffffffda RBX: 0000565409846700 RCX: 00007fdb4ba5937d
[    9.580246][  T170] RDX: 0000000000000000 RSI: 0000565407103ffd RDI: 0000000000000005
[    9.580248][  T170] RBP: 00007fff079c9820 R08: 0000000000000000 R09: 0000000000000000
[    9.580249][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 0000565407103ffd
[    9.580251][  T170] R13: 0000565409846810 R14: 0000000000040000 R15: 0000000000000000
| [   12.053097][  T226] softirqs last disabled at (23079): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   12.053100][  T226] Preemption disabled at:
| [   12.053100][  T226] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.053109][  T226] Tainted: [W]=WARN
[   12.053110][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.053112][  T226] Call Trace:
[   12.053114][  T226]  <TASK>
[   12.053116][  T226]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.053121][  T226]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.053123][  T226]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.053128][  T226]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.053132][  T226]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.053137][  T226]  __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))
[   12.053139][  T226]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.053144][  T226]  ? 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)
[   12.053147][  T226]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.053150][  T226]  put_chars (drivers/char/virtio_console.c:1176)
[   12.053153][  T226]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.053154][  T226]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.053157][  T226]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.053160][  T226]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.053165][  T226]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.053167][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.053169][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.053173][  T226]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.053176][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.053179][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.053183][  T226]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.053186][  T226]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.053190][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.053192][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.053196][  T226]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.053200][  T226]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.053202][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.053206][  T226]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.053209][  T226]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.053211][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.053213][  T226]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.053216][  T226]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.053218][  T226]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.053221][  T226]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.053224][  T226]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.053227][  T226]  ? _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)
[   12.053233][  T226]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   12.053237][  T226]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   12.053241][  T226]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   12.053243][  T226]  ? idr_get_free (??:?)
[   12.053247][  T226]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   12.053250][  T226]  ? _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)
[   12.053252][  T226]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   12.053255][  T226]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.053257][  T226]  ? handle_pte_fault (mm/memory.c:6558)
[   12.053262][  T226]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   12.053264][  T226]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.053266][  T226]  new_sync_write (fs/read_write.c:595)
[   12.053271][  T226]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.053273][  T226]  ? 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))
[   12.053281][  T226]  vfs_write (fs/read_write.c:687)
[   12.053285][  T226]  ksys_write (fs/read_write.c:739)
[   12.053288][  T226]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.053290][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.053292][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.053303][  T226]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.053306][  T226]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.053309][  T226]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.053312][  T226] RIP: 0033:0x7fb01287054e
[   12.053316][  T226] 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
[   12.053318][  T226] RSP: 002b:00007fffaf2dfe90 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.053321][  T226] RAX: ffffffffffffffda RBX: 00007fb0129f1580 RCX: 00007fb01287054e
[   12.053322][  T226] RDX: 0000000000000021 RSI: 000055c4683b5060 RDI: 0000000000000001
[   12.053323][  T226] RBP: 00007fffaf2dfea0 R08: 0000000000000000 R09: 0000000000000000
[   12.053324][  T226] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000021
[   12.053328][  T226] R13: 0000000000000021 R14: 000055c4683b5060 R15: 00007fb0129f1668
| [   13.379500][  T274] softirqs last disabled at (11769): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   13.379503][  T274] Preemption disabled at:
| [   13.379504][  T274] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.379513][  T274] Tainted: [W]=WARN
[   13.379514][  T274] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.379516][  T274] Call Trace:
[   13.379518][  T274]  <TASK>
[   13.379519][  T274]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.379525][  T274]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.379527][  T274]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.379531][  T274]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.379535][  T274]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.379540][  T274]  __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))
[   13.379542][  T274]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.379548][  T274]  ? 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)
[   13.379550][  T274]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.379553][  T274]  put_chars (drivers/char/virtio_console.c:1176)
[   13.379556][  T274]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.379558][  T274]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.379561][  T274]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.379564][  T274]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.379568][  T274]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.379571][  T274]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.379573][  T274]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.379577][  T274]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.379580][  T274]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.379583][  T274]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.379587][  T274]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.379590][  T274]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.379595][  T274]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.379597][  T274]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.379600][  T274]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.379604][  T274]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.379606][  T274]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.379611][  T274]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.379614][  T274]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.379615][  T274]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.379617][  T274]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.379621][  T274]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.379622][  T274]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.379625][  T274]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.379629][  T274]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.379632][  T274]  ? _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)
[   13.379637][  T274]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.379642][  T274]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.379645][  T274]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.379647][  T274]  ? idr_get_free (??:?)
[   13.379651][  T274]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.379654][  T274]  ? _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)
[   13.379656][  T274]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.379659][  T274]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.379661][  T274]  ? handle_pte_fault (mm/memory.c:6558)
[   13.379666][  T274]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   13.379668][  T274]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.379671][  T274]  new_sync_write (fs/read_write.c:595)
[   13.379675][  T274]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.379677][  T274]  ? 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))
[   13.379685][  T274]  vfs_write (fs/read_write.c:687)
[   13.379689][  T274]  ksys_write (fs/read_write.c:739)
[   13.379692][  T274]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.379694][  T274]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.379696][  T274]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.379700][  T274]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.379702][  T274]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.379705][  T274]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.379707][  T274] RIP: 0033:0x7fc89436654e
[   13.379712][  T274] 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
[   13.379714][  T274] RSP: 002b:00007ffff54f8fc0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.379717][  T274] RAX: ffffffffffffffda RBX: 00007fc8944e7580 RCX: 00007fc89436654e
[   13.379718][  T274] RDX: 0000000000000021 RSI: 000055e946db4060 RDI: 0000000000000001
[   13.379719][  T274] RBP: 00007ffff54f8fd0 R08: 0000000000000000 R09: 0000000000000000
[   13.379720][  T274] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000021


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