======================================
| [   11.492167][  T170] softirqs last disabled at (24783): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   11.492170][  T170] Preemption disabled at:
| [   11.492171][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.492184][  T170] Tainted: [W]=WARN
[   11.492185][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.492187][  T170] Call Trace:
[   11.492189][  T170]  <TASK>
[   11.492190][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.492196][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.492198][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.492202][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.492206][  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)
[   11.492211][  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))
[   11.492213][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.492219][  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)
[   11.492221][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.492224][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[   11.492227][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.492230][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.492235][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.492241][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.492243][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.492246][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.492250][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.492253][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.492257][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.492259][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.492263][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.492267][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.492268][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.492273][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.492276][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.492277][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.492279][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.492282][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.492284][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.492287][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.492290][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.492292][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.492296][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.492297][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   11.492302][  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
[   11.492306][  T170]  _printk (kernel/printk/printk.c:2504)
[   11.492310][  T170]  ? snapshot_read.cold (user.c:?)
[   11.492312][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   11.492316][  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
[   11.492319][  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)
[   11.492324][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   11.492328][  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
[   11.492334][  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
[   11.492337][  T170]  do_one_initcall (init/main.c:1357)
[   11.492341][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   11.492345][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   11.492348][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   11.492353][  T170]  do_init_module (kernel/module/main.c:3117)
[   11.492357][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   11.492361][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   11.492364][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   11.492367][  T170]  load_module (kernel/module/main.c:3593)
[   11.492374][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   11.492377][  T170]  ? __ia32_sys_fsconfig (??:?)
[   11.492380][  T170]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   11.492384][  T170]  ? backing_file_read_iter (fs/backing-file.c:211)
[   11.492393][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.492397][  T170]  init_module_from_file (kernel/module/main.c:3790)
[   11.492400][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   11.492408][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   11.492411][  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)
[   11.492414][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[   11.492417][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[   11.492423][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.492425][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   11.492431][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   11.492433][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   11.492437][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.492439][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.492441][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.492444][  T170] RIP: 0033:0x7f98abd2637d
[   11.492447][  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
[   11.492449][  T170] RSP: 002b:00007ffcb31aae68 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   11.492451][  T170] RAX: ffffffffffffffda RBX: 00005629bf89d700 RCX: 00007f98abd2637d
[   11.492452][  T170] RDX: 0000000000000000 RSI: 0000562981f02ffd RDI: 0000000000000005
[   11.492453][  T170] RBP: 00007ffcb31aaf00 R08: 0000000000000000 R09: 0000000000000000
[   11.492454][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 0000562981f02ffd
[   11.492455][  T170] R13: 00005629bf89d810 R14: 0000000000040000 R15: 0000000000000000
| [   12.653046][  T158] softirqs last disabled at (127133): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   12.653049][  T158] Preemption disabled at:
| [   12.653050][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.653059][  T158] Tainted: [W]=WARN
[   12.653060][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.653063][  T158] Call Trace:
[   12.653064][  T158]  <TASK>
[   12.653066][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.653072][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.653074][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.653079][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.653082][  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)
[   12.653087][  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))
[   12.653089][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.653095][  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)
[   12.653097][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.653101][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   12.653105][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.653106][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.653110][  T158]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   12.653115][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.653118][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.653119][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.653124][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.653127][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.653131][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.653135][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.653139][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.653143][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.653146][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.653149][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.653154][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.653155][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.653161][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.653163][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.653165][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.653167][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.653171][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.653176][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.653179][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.653183][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.653189][  T158]  _printk (kernel/printk/printk.c:2504)
[   12.653193][  T158]  ? snapshot_read.cold (user.c:?)
[   12.653197][  T158]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.653200][  T158]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   12.653206][  T158]  register_console (kernel/printk/printk.c:4212 (discriminator 7))
[   12.653209][  T158]  ? get_init_console_seq.constprop.0.isra.0 (kernel/printk/printk.c:4018)
[   12.653212][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.653217][  T158] enabled_store (drivers/net/netconsole.c:1039) netconsole
[   12.653219][  T158]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.653223][  T158]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   12.653225][  T158]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   12.653228][  T158]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:253 mm/slub.c:4683 mm/slub.c:4996 mm/slub.c:5559)
[   12.653230][  T158]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   12.653234][  T158]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   12.653236][  T158]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   12.653239][  T158]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   12.653242][  T158]  new_sync_write (fs/read_write.c:595)
[   12.653245][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.653247][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.653251][  T158]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.653252][  T158]  ? ksys_write (fs/read_write.c:739)
[   12.653259][  T158]  vfs_write (fs/read_write.c:687)
[   12.653264][  T158]  ksys_write (fs/read_write.c:739)
[   12.653266][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.653268][  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)
[   12.653271][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.653275][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.653277][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.653279][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.653282][  T158] RIP: 0033:0x7f0ebbfc954e
[   12.653286][  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
[   12.653288][  T158] RSP: 002b:00007ffdb6576cd0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.653291][  T158] RAX: ffffffffffffffda RBX: 00007f0ebc14a580 RCX: 00007f0ebbfc954e
[   12.653292][  T158] RDX: 0000000000000002 RSI: 000055e7260260f0 RDI: 0000000000000001
[   12.653294][  T158] RBP: 00007ffdb6576ce0 R08: 0000000000000000 R09: 0000000000000000
[   12.653294][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
[   12.653295][  T158] R13: 0000000000000002 R14: 000055e7260260f0 R15: 0000000000000000
| [   19.194688][  T158] softirqs last disabled at (608180): 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))
| [   19.194692][  T158] Preemption disabled at:
| [   19.194693][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   19.194706][  T158] Tainted: [W]=WARN
[   19.194708][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.194710][  T158] Call Trace:
[   19.194713][  T158]  <TASK>
[   19.194715][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.194722][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   19.194726][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.194732][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.194737][  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)
[   19.194744][  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))
[   19.194747][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.194756][  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)
[   19.194760][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.194765][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   19.194770][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.194772][  T158]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1929)
[   19.194779][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.194783][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.194792][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.194795][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.194798][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.194806][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.194809][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   19.194814][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.194818][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.194825][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.194832][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.194840][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.194844][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.194851][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.194858][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.194861][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.194870][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.194874][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.194877][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.194880][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   19.194887][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.194890][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.194895][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.194902][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.194907][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.194909][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.194911][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.194919][  T158]  _printk (kernel/printk/printk.c:2504)
[   19.194924][  T158]  ? snapshot_read.cold (user.c:?)
[   19.194929][  T158]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.194935][  T158]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.194940][  T158]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.194949][  T158]  unregister_console_locked.cold (kernel/printk/printk.c:4244 (discriminator 7))
[   19.194955][  T158]  ? console_suspend (kernel/printk/printk.c:114 (discriminator 1))
[   19.194965][  T158]  ? console_list_lock (./include/linux/lockdep.h:249 ./include/linux/srcu.h:184 ./include/linux/srcu.h:180 kernel/printk/printk.c:260)
[   19.194968][  T158]  unregister_console (kernel/printk/printk.c:4334)
[   19.194972][  T158] enabled_store (drivers/net/netconsole.c:975 drivers/net/netconsole.c:1089) netconsole
[   19.194976][  T158]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.194982][  T158]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   19.194985][  T158]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   19.194988][  T158]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:253 mm/slub.c:4683 mm/slub.c:4996 mm/slub.c:5559)
[   19.194992][  T158]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   19.194999][  T158]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   19.195003][  T158]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   19.195008][  T158]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   19.195013][  T158]  new_sync_write (fs/read_write.c:595)
[   19.195017][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.195022][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   19.195028][  T158]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.195031][  T158]  ? ksys_write (fs/read_write.c:739)
[   19.195043][  T158]  vfs_write (fs/read_write.c:687)
[   19.195050][  T158]  ksys_write (fs/read_write.c:739)
[   19.195055][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   19.195059][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.195063][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.195069][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.195073][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.195078][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.195081][  T158] RIP: 0033:0x7f0ebbfc954e
[   19.195086][  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
[   19.195089][  T158] RSP: 002b:00007ffdb6576250 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   19.195094][  T158] RAX: ffffffffffffffda RBX: 00007f0ebc14a580 RCX: 00007f0ebbfc954e
[   19.195096][  T158] RDX: 0000000000000002 RSI: 000055e7260260f0 RDI: 0000000000000001
[   19.195097][  T158] RBP: 00007ffdb6576260 R08: 0000000000000000 R09: 0000000000000000
[   19.195099][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002


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