======================================
| [   10.597500][  T170] softirqs last disabled at (30577): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.597504][  T170] Preemption disabled at:
| [   10.597505][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.597517][  T170] Tainted: [W]=WARN
[   10.597519][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.597521][  T170] Call Trace:
[   10.597523][  T170]  <TASK>
[   10.597526][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.597533][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.597536][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.597542][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.597548][  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)
[   10.597554][  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))
[   10.597557][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.597566][  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)
[   10.597569][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.597574][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[   10.597579][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.597584][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.597592][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.597602][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.597605][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.597610][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.597616][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.597622][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.597629][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.597633][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.597639][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.597646][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.597648][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.597657][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.597661][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.597664][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.597667][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.597679][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.597681][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.597687][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.597692][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.597695][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.597701][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.597703][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.597712][  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
[   10.597719][  T170]  _printk (kernel/printk/printk.c:2504)
[   10.597725][  T170]  ? snapshot_read.cold (user.c:?)
[   10.597729][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.597734][  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
[   10.597741][  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)
[   10.597748][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.597753][  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
[   10.597765][  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
[   10.597770][  T170]  do_one_initcall (init/main.c:1357)
[   10.597775][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.597784][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.597788][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.597796][  T170]  do_init_module (kernel/module/main.c:3117)
[   10.597802][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.597808][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.597813][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.597820][  T170]  load_module (kernel/module/main.c:3593)
[   10.597831][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.597838][  T170]  ? __ia32_sys_fsconfig (??:?)
[   10.597843][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.597847][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.597854][  T170]  init_module_from_file (kernel/module/main.c:3790)
[   10.597858][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.597873][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.597878][  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)
[   10.597883][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[   10.597889][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.597900][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.597904][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.597913][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.597916][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.597922][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.597925][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.597929][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.597933][  T170] RIP: 0033:0x7faf3ffe837d
[   10.597938][  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
[   10.597941][  T170] RSP: 002b:00007ffcafac2bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.597945][  T170] RAX: ffffffffffffffda RBX: 0000562576602700 RCX: 00007faf3ffe837d
[   10.597947][  T170] RDX: 0000000000000000 RSI: 00005625583f0ffd RDI: 0000000000000005
[   10.597948][  T170] RBP: 00007ffcafac2c90 R08: 0000000000000000 R09: 0000000000000000
[   10.597950][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 00005625583f0ffd
[   10.597951][  T170] R13: 0000562576602810 R14: 0000000000040000 R15: 0000000000000000
| [   12.704814][  T157] softirqs last disabled at (124604): 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))
| [   12.704816][  T157] Preemption disabled at:
| [   12.704817][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.704826][  T157] Tainted: [W]=WARN
[   12.704827][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.704828][  T157] Call Trace:
[   12.704830][  T157]  <TASK>
[   12.704832][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.704837][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.704839][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.704844][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.704848][  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)
[   12.704853][  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))
[   12.704855][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.704860][  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)
[   12.704863][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.704866][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   12.704869][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.704870][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   12.704874][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.704876][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.704881][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.704883][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.704885][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.704889][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.704892][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.704895][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.704899][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.704903][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.704907][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.704909][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.704913][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.704917][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.704919][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.704923][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.704926][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.704928][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.704930][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.704933][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.704935][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.704938][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.704941][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.704944][  T157]  ? _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)
[   12.704950][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   12.704954][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   12.704958][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   12.704960][  T157]  ? idr_get_free (??:?)
[   12.704964][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   12.704967][  T157]  ? _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)
[   12.704970][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   12.704973][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.704974][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.704977][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   12.704981][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   12.704983][  T157]  new_sync_write (fs/read_write.c:595)
[   12.704988][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   12.704990][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.704998][  T157]  vfs_write (fs/read_write.c:687)
[   12.705002][  T157]  ksys_write (fs/read_write.c:739)
[   12.705005][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.705007][  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)
[   12.705009][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.705013][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.705015][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.705018][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.705020][  T157] RIP: 0033:0x7fa4f9a3b54e
[   12.705024][  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
[   12.705026][  T157] RSP: 002b:00007fff63d34150 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.705029][  T157] RAX: ffffffffffffffda RBX: 00007fa4f9bbc580 RCX: 00007fa4f9a3b54e
[   12.705030][  T157] RDX: 0000000000000025 RSI: 000055af87921ff0 RDI: 0000000000000001
[   12.705031][  T157] RBP: 00007fff63d34160 R08: 0000000000000000 R09: 0000000000000000
[   12.705032][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025
[   12.705033][  T157] R13: 0000000000000025 R14: 000055af87921ff0 R15: 0000000000000000
| [   13.709577][  T157] softirqs last disabled at (348824): 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))
| [   13.709581][  T157] Preemption disabled at:
| [   13.709582][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.709594][  T157] Tainted: [W]=WARN
[   13.709595][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.709598][  T157] Call Trace:
[   13.709600][  T157]  <TASK>
[   13.709602][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.709609][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.709612][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.709618][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.709624][  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)
[   13.709631][  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))
[   13.709634][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.709643][  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)
[   13.709646][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.709651][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   13.709655][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.709657][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.709663][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.709666][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.709673][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.709677][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.709686][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.709693][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.709698][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.709703][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.709713][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.709719][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.709726][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.709730][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.709736][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.709743][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.709745][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.709754][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.709758][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.709761][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.709764][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.709770][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.709773][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.709778][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.709783][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.709788][  T157]  ? _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)
[   13.709797][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.709802][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.709809][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.709812][  T157]  ? idr_get_free (??:?)
[   13.709817][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.709822][  T157]  ? _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)
[   13.709827][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.709831][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.709834][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.709838][  T157]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   13.709844][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.709848][  T157]  new_sync_write (fs/read_write.c:595)
[   13.709855][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.709858][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.709872][  T157]  vfs_write (fs/read_write.c:687)
[   13.709879][  T157]  ksys_write (fs/read_write.c:739)
[   13.709883][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.709886][  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)
[   13.709891][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.709896][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.709900][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.709905][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.709908][  T157] RIP: 0033:0x7fa4f9a3b54e
[   13.709913][  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
[   13.709916][  T157] RSP: 002b:00007fff63d34150 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.709921][  T157] RAX: ffffffffffffffda RBX: 00007fa4f9bbc580 RCX: 00007fa4f9a3b54e
[   13.709923][  T157] RDX: 0000000000000026 RSI: 000055af87921ff0 RDI: 0000000000000001
[   13.709925][  T157] RBP: 00007fff63d34160 R08: 0000000000000000 R09: 0000000000000000
[   13.709926][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000026
[   13.709928][  T157] R13: 0000000000000026 R14: 000055af87921ff0 R15: 0000000000000000
| [   14.717718][  T157] softirqs last disabled at (462412): 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))
| [   14.717721][  T157] Preemption disabled at:
| [   14.717722][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.717731][  T157] Tainted: [W]=WARN
[   14.717732][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.717734][  T157] Call Trace:
[   14.717736][  T157]  <TASK>
[   14.717738][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.717743][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.717745][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.717750][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.717753][  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)
[   14.717758][  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))
[   14.717760][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.717766][  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)
[   14.717769][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.717772][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   14.717775][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.717776][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.717780][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.717783][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.717788][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.717790][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.717792][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.717796][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.717799][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.717802][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.717806][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.717809][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.717814][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.717816][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.717819][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.717823][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.717825][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.717830][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.717832][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.717834][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.717836][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.717840][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.717841][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.717844][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.717847][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.717850][  T157]  ? _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)
[   14.717856][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.717860][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.717864][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.717866][  T157]  ? idr_get_free (??:?)
[   14.717869][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.717872][  T157]  ? _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)
[   14.717875][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.717878][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.717880][  T157]  ? handle_pte_fault (mm/memory.c:6582)
[   14.717885][  T157]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   14.717887][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.717889][  T157]  new_sync_write (fs/read_write.c:595)
[   14.717894][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.717896][  T157]  ? 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))
[   14.717904][  T157]  vfs_write (fs/read_write.c:687)
[   14.717908][  T157]  ksys_write (fs/read_write.c:739)
[   14.717911][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.717913][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.717915][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.717918][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.717921][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.717924][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.717926][  T157] RIP: 0033:0x7fa4f9a3b54e
[   14.717930][  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
[   14.717932][  T157] RSP: 002b:00007fff63d34150 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.717935][  T157] RAX: ffffffffffffffda RBX: 00007fa4f9bbc580 RCX: 00007fa4f9a3b54e
[   14.717936][  T157] RDX: 0000000000000026 RSI: 000055af87921ff0 RDI: 0000000000000001
[   14.717937][  T157] RBP: 00007fff63d34160 R08: 0000000000000000 R09: 0000000000000000
[   14.717938][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000026
[   14.717939][  T157] R13: 0000000000000026 R14: 000055af87921ff0 R15: 0000000000000000
| [   15.844094][  T157] softirqs last disabled at (564390): 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))
| [   15.844097][  T157] Preemption disabled at:
| [   15.844098][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.844108][  T157] Tainted: [W]=WARN
[   15.844109][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.844111][  T157] Call Trace:
[   15.844113][  T157]  <TASK>
[   15.844115][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.844121][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.844124][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.844129][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.844133][  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)
[   15.844139][  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))
[   15.844142][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.844149][  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)
[   15.844152][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.844156][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   15.844160][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.844162][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.844166][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.844169][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.844175][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.844178][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.844180][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.844186][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.844190][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.844194][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.844199][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.844204][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.844210][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.844213][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.844218][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.844223][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.844226][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.844233][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.844236][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.844238][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.844241][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.844246][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.844249][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.844253][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.844258][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.844262][  T157]  ? _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)
[   15.844269][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.844274][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.844280][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.844282][  T157]  ? idr_get_free (??:?)
[   15.844287][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.844291][  T157]  ? _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)
[   15.844294][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.844298][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.844300][  T157]  ? handle_pte_fault (mm/memory.c:6582)
[   15.844306][  T157]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   15.844309][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.844312][  T157]  new_sync_write (fs/read_write.c:595)
[   15.844319][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.844321][  T157]  ? 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))
[   15.844334][  T157]  vfs_write (fs/read_write.c:687)
[   15.844339][  T157]  ksys_write (fs/read_write.c:739)
[   15.844343][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.844346][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.844348][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.844353][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.844355][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.844359][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.844362][  T157] RIP: 0033:0x7fa4f9a3b54e
[   15.844367][  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
[   15.844369][  T157] RSP: 002b:00007fff63d34150 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.844372][  T157] RAX: ffffffffffffffda RBX: 00007fa4f9bbc580 RCX: 00007fa4f9a3b54e
[   15.844374][  T157] RDX: 0000000000000027 RSI: 000055af87921ff0 RDI: 0000000000000001
[   15.844375][  T157] RBP: 00007fff63d34160 R08: 0000000000000000 R09: 0000000000000000
[   15.844377][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000027
[   15.844378][  T157] R13: 0000000000000027 R14: 000055af87921ff0 R15: 0000000000000000
| [   16.873431][  T157] softirqs last disabled at (735460): 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))
| [   16.873434][  T157] Preemption disabled at:
| [   16.873435][  T157] vprintk_emit (kernel/printk/printk.c:2471)
| [   16.873445][  T157] Tainted: [W]=WARN
[   16.873446][  T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.873448][  T157] Call Trace:
[   16.873450][  T157]  <TASK>
[   16.873452][  T157]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.873458][  T157]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   16.873460][  T157]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.873465][  T157]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.873469][  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)
[   16.873475][  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))
[   16.873477][  T157]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.873484][  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)
[   16.873487][  T157]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.873490][  T157]  put_chars (drivers/char/virtio_console.c:1176)
[   16.873494][  T157]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.873496][  T157]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   16.873500][  T157]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.873504][  T157]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.873509][  T157]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.873512][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.873514][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.873519][  T157]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.873524][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.873527][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.873532][  T157]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.873537][  T157]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.873542][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.873544][  T157]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.873549][  T157]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.873554][  T157]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.873556][  T157]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.873562][  T157]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.873565][  T157]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.873567][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.873570][  T157]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   16.873574][  T157]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.873576][  T157]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.873580][  T157]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.873584][  T157]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.873589][  T157]  ? _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)
[   16.873596][  T157]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   16.873601][  T157]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   16.873606][  T157]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   16.873608][  T157]  ? idr_get_free (??:?)
[   16.873612][  T157]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   16.873616][  T157]  ? _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)
[   16.873620][  T157]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   16.873623][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.873625][  T157]  ? handle_pte_fault (mm/memory.c:6582)
[   16.873631][  T157]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   16.873634][  T157]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.873637][  T157]  new_sync_write (fs/read_write.c:595)
[   16.873643][  T157]  ? new_sync_read (./include/linux/ioprio.h:41)
[   16.873645][  T157]  ? 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))
[   16.873657][  T157]  vfs_write (fs/read_write.c:687)
[   16.873662][  T157]  ksys_write (fs/read_write.c:739)
[   16.873665][  T157]  ? __ia32_sys_read (fs/read_write.c:723)
[   16.873668][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.873670][  T157]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.873674][  T157]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.873676][  T157]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.873680][  T157]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.873682][  T157] RIP: 0033:0x7fa4f9a3b54e
[   16.873687][  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
[   16.873697][  T157] RSP: 002b:00007fff63d34150 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   16.873700][  T157] RAX: ffffffffffffffda RBX: 00007fa4f9bbc580 RCX: 00007fa4f9a3b54e
[   16.873702][  T157] RDX: 0000000000000027 RSI: 000055af87921ff0 RDI: 0000000000000001
[   16.873703][  T157] RBP: 00007fff63d34160 R08: 0000000000000000 R09: 0000000000000000
[   16.873704][  T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000027


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