======================================
| [    9.477049][  T169] softirqs last disabled at (27307): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.477052][  T169] Preemption disabled at:
| [    9.477053][  T169] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.477062][  T169] Tainted: [W]=WARN
[    9.477063][  T169] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.477065][  T169] Call Trace:
[    9.477066][  T169]  <TASK>
[    9.477068][  T169]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.477073][  T169]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.477075][  T169]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.477080][  T169]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.477083][  T169]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.477093][  T169]  __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))
[    9.477096][  T169]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.477102][  T169]  ? 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)
[    9.477104][  T169]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.477107][  T169]  put_chars (drivers/char/virtio_console.c:1176)
[    9.477110][  T169]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.477113][  T169]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.477118][  T169]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.477124][  T169]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.477126][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.477130][  T169]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.477133][  T169]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.477137][  T169]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.477141][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.477143][  T169]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.477146][  T169]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.477150][  T169]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.477152][  T169]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.477156][  T169]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.477159][  T169]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.477160][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.477162][  T169]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.477166][  T169]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.477167][  T169]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.477170][  T169]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.477174][  T169]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.477175][  T169]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.477179][  T169]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.477180][  T169]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.477185][  T169]  ? 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
[    9.477189][  T169]  _printk (kernel/printk/printk.c:2504)
[    9.477193][  T169]  ? snapshot_read.cold (user.c:?)
[    9.477196][  T169]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.477199][  T169]  ? 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
[    9.477203][  T169]  ? 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)
[    9.477208][  T169] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.477211][  T169]  ? 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
[    9.477218][  T169]  ? 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
[    9.477220][  T169]  do_one_initcall (init/main.c:1357)
[    9.477224][  T169]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.477228][  T169]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.477231][  T169]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.477236][  T169]  do_init_module (kernel/module/main.c:3117)
[    9.477240][  T169]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.477244][  T169]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.477247][  T169]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.477251][  T169]  load_module (kernel/module/main.c:3593)
[    9.477257][  T169]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.477261][  T169]  ? __ia32_sys_fsconfig (??:?)
[    9.477264][  T169]  ? ovl_real_file (fs/overlayfs/file.c:195)
[    9.477267][  T169]  ? backing_file_read_iter (fs/backing-file.c:211)
[    9.477271][  T169]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.477275][  T169]  init_module_from_file (kernel/module/main.c:3790)
[    9.477278][  T169]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.477286][  T169]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.477289][  T169]  ? 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)
[    9.477292][  T169]  idempotent_init_module (kernel/module/main.c:3802)
[    9.477295][  T169]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.477301][  T169]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.477303][  T169]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.477308][  T169]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.477310][  T169]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.477315][  T169]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.477316][  T169]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.477319][  T169]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.477321][  T169] RIP: 0033:0x7f1b6c40f37d
[    9.477325][  T169] 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
[    9.477327][  T169] RSP: 002b:00007ffff19d7988 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.477329][  T169] RAX: ffffffffffffffda RBX: 000055b9f024e700 RCX: 00007f1b6c40f37d
[    9.477331][  T169] RDX: 0000000000000000 RSI: 000055b9dbeaeffd RDI: 0000000000000005
[    9.477332][  T169] RBP: 00007ffff19d7a20 R08: 0000000000000000 R09: 0000000000000000
[    9.477332][  T169] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b9dbeaeffd
[    9.477333][  T169] R13: 000055b9f024e810 R14: 0000000000040000 R15: 0000000000000000
| [   10.621953][  T157] softirqs last disabled at (105231): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.621956][  T157] Preemption disabled at:
| [   10.621957][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.621966][  T157] Tainted: [W]=WARN
[   10.621967][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.621969][  T157] Call Trace:
[   10.621971][  T157]  <TASK>
[   10.621973][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.621978][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.621980][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.621985][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.621989][  T157]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.621993][  T157]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.621995][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.622001][  T157]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.622004][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.622007][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   10.622010][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.622012][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   10.622016][  T157]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.622020][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.622023][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.622025][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.622029][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.622032][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.622036][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.622040][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.622044][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.622048][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.622050][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.622054][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.622059][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.622060][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.622066][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.622068][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.622074][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.622083][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.622086][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.622088][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.622091][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.622095][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.622101][  T157]  _printk (kernel/printk/printk.c:2504)
[   10.622105][  T157]  ? snapshot_read.cold (user.c:?)
[   10.622109][  T157]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.622112][  T157]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.622118][  T157]  register_console (kernel/printk/printk.c:4212 (discriminator 7))
[   10.622122][  T157]  ? get_init_console_seq.constprop.0.isra.0 (kernel/printk/printk.c:4018)
[   10.622124][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.622129][  T157] enabled_store (drivers/net/netconsole.c:1039) netconsole
[   10.622132][  T157]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.622136][  T157]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   10.622138][  T157]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   10.622140][  T157]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:253 mm/slub.c:4683 mm/slub.c:4996 mm/slub.c:5559)
[   10.622143][  T157]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   10.622147][  T157]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   10.622149][  T157]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   10.622152][  T157]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   10.622155][  T157]  new_sync_write (fs/read_write.c:595)
[   10.622158][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.622160][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   10.622164][  T157]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.622166][  T157]  ? ksys_write (fs/read_write.c:739)
[   10.622172][  T157]  vfs_write (fs/read_write.c:687)
[   10.622177][  T157]  ksys_write (fs/read_write.c:739)
[   10.622180][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   10.622181][  T157]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.622184][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.622188][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.622189][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.622192][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.622195][  T157] RIP: 0033:0x7f380c7a154e
[   10.622199][  T157] 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
[   10.622201][  T157] RSP: 002b:00007fffff617ff0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   10.622204][  T157] RAX: ffffffffffffffda RBX: 00007f380c922580 RCX: 00007f380c7a154e
[   10.622205][  T157] RDX: 0000000000000002 RSI: 00005643b38bb0f0 RDI: 0000000000000001
[   10.622207][  T157] RBP: 00007fffff618000 R08: 0000000000000000 R09: 0000000000000000
[   10.622207][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
[   10.622208][  T157] R13: 0000000000000002 R14: 00005643b38bb0f0 R15: 0000000000000000
| [   17.137018][  T157] softirqs last disabled at (585870): 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))
| [   17.137020][  T157] Preemption disabled at:
| [   17.137021][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.137036][  T157] Tainted: [W]=WARN
[   17.137037][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.137038][  T157] Call Trace:
[   17.137040][  T157]  <TASK>
[   17.137042][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.137048][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.137050][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.137054][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.137058][  T157]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   17.137063][  T157]  __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))
[   17.137065][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.137070][  T157]  ? 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)
[   17.137073][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.137077][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   17.137080][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.137081][  T157]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1929)
[   17.137085][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.137088][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.137093][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.137096][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.137097][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.137102][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.137103][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   17.137107][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.137110][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.137114][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.137117][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.137122][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.137124][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.137128][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.137132][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.137134][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.137139][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.137142][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.137143][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.137145][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.137149][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.137151][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.137154][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.137157][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.137160][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.137162][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.137163][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.137167][  T157]  _printk (kernel/printk/printk.c:2504)
[   17.137171][  T157]  ? snapshot_read.cold (user.c:?)
[   17.137174][  T157]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   17.137178][  T157]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   17.137181][  T157]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   17.137186][  T157]  unregister_console_locked.cold (kernel/printk/printk.c:4244 (discriminator 7))
[   17.137190][  T157]  ? console_suspend (kernel/printk/printk.c:114 (discriminator 1))
[   17.137196][  T157]  ? console_list_lock (./include/linux/lockdep.h:249 ./include/linux/srcu.h:184 ./include/linux/srcu.h:180 kernel/printk/printk.c:260)
[   17.137198][  T157]  unregister_console (kernel/printk/printk.c:4334)
[   17.137200][  T157] enabled_store (drivers/net/netconsole.c:975 drivers/net/netconsole.c:1089) netconsole
[   17.137203][  T157]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   17.137206][  T157]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   17.137209][  T157]  ? down_write_killable_nested (./arch/x86/include/asm/atomic64_64.h:20)
[   17.137210][  T157]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:253 mm/slub.c:4683 mm/slub.c:4996 mm/slub.c:5559)
[   17.137213][  T157]  ? configfs_write_iter (./include/linux/slab.h:991 (discriminator 1) fs/configfs/file.c:187 (discriminator 1) fs/configfs/file.c:227 (discriminator 1))
[   17.137217][  T157]  ? netconsole_write_ext (drivers/net/netconsole.c:2504) netconsole
[   17.137219][  T157]  configfs_write_iter (fs/configfs/file.c:207 fs/configfs/file.c:229)
[   17.137222][  T157]  ? configfs_bin_write_iter (fs/configfs/file.c:287 (discriminator 1))
[   17.137225][  T157]  new_sync_write (fs/read_write.c:595)
[   17.137227][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.137230][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.137233][  T157]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   17.137235][  T157]  ? ksys_write (fs/read_write.c:739)
[   17.137241][  T157]  vfs_write (fs/read_write.c:687)
[   17.137246][  T157]  ksys_write (fs/read_write.c:739)
[   17.137249][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.137251][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.137253][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.137257][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.137259][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.137262][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.137264][  T157] RIP: 0033:0x7f380c7a154e
[   17.137269][  T157] 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
[   17.137270][  T157] RSP: 002b:00007fffff617570 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.137274][  T157] RAX: ffffffffffffffda RBX: 00007f380c922580 RCX: 00007f380c7a154e
[   17.137275][  T157] RDX: 0000000000000002 RSI: 00005643b38bb0f0 RDI: 0000000000000001
[   17.137276][  T157] RBP: 00007fffff617580 R08: 0000000000000000 R09: 0000000000000000
[   17.137277][  T157] 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