======================================
| [   10.062898][  T171] softirqs last disabled at (31149): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.062900][  T171] Preemption disabled at:
| [   10.062901][  T171] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.062910][  T171] Tainted: [W]=WARN
[   10.062911][  T171] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.062913][  T171] Call Trace:
[   10.062914][  T171]  <TASK>
[   10.062916][  T171]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.062921][  T171]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.062923][  T171]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.062928][  T171]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.062931][  T171]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.062935][  T171]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.062937][  T171]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.062943][  T171]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.062945][  T171]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.062949][  T171]  put_chars (drivers/char/virtio_console.c:1176)
[   10.062951][  T171]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.062954][  T171]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.062959][  T171]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.062965][  T171]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.062967][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.062971][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.062974][  T171]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.062978][  T171]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.062982][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.062984][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.062988][  T171]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.062991][  T171]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.062993][  T171]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.062998][  T171]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.063000][  T171]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.063001][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.063003][  T171]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.063007][  T171]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.063008][  T171]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.063011][  T171]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.063015][  T171]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.063016][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.063020][  T171]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.063021][  T171]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.063026][  T171]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   10.063031][  T171]  _printk (kernel/printk/printk.c:2504)
[   10.063034][  T171]  ? snapshot_read.cold (user.c:?)
[   10.063037][  T171]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.063040][  T171]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   10.063044][  T171]  ? configfs_register_subsystem (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 fs/configfs/dir.c:173 fs/configfs/dir.c:171 fs/configfs/dir.c:1929)
[   10.063049][  T171] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.063052][  T171]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   10.063056][  T171]  ? do_one_initcall (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/cpumask.h:650 ./include/linux/cpumask.h:1232 ./include/trace/events/initcall.h:27 init/main.c:1356)
[   10.063061][  T171]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[   10.063064][  T171]  do_one_initcall (init/main.c:1357)
[   10.063066][  T171]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.063071][  T171]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.063074][  T171]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.063079][  T171]  do_init_module (kernel/module/main.c:3117)
[   10.063083][  T171]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.063087][  T171]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.063090][  T171]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.063093][  T171]  load_module (kernel/module/main.c:3593)
[   10.063100][  T171]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.063103][  T171]  ? __ia32_sys_fsconfig (??:?)
[   10.063107][  T171]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.063110][  T171]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.063114][  T171]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.063117][  T171]  init_module_from_file (kernel/module/main.c:3790)
[   10.063121][  T171]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.063128][  T171]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.063132][  T171]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.063134][  T171]  idempotent_init_module (kernel/module/main.c:3802)
[   10.063137][  T171]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.063143][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.063145][  T171]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.063151][  T171]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.063153][  T171]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.063157][  T171]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.063158][  T171]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.063163][  T171]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.063165][  T171] RIP: 0033:0x7fc990a9d37d
[   10.063169][  T171] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   10.063170][  T171] RSP: 002b:00007ffe1503d278 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.063173][  T171] RAX: ffffffffffffffda RBX: 000055b8fd0f7700 RCX: 00007fc990a9d37d
[   10.063175][  T171] RDX: 0000000000000000 RSI: 000055b8bf7b3ffd RDI: 0000000000000005
[   10.063176][  T171] RBP: 00007ffe1503d310 R08: 0000000000000000 R09: 0000000000000000
[   10.063177][  T171] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b8bf7b3ffd
[   10.063178][  T171] R13: 000055b8fd0f7810 R14: 0000000000040000 R15: 0000000000000000
| [   13.291972][  T158] softirqs last disabled at (156908): 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))
| [   13.291975][  T158] Preemption disabled at:
| [   13.291976][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.291988][  T158] Tainted: [W]=WARN
[   13.291989][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.291992][  T158] Call Trace:
[   13.291994][  T158]  <TASK>
[   13.291996][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.292002][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.292005][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.292011][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.292016][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.292022][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   13.292026][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.292033][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.292037][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.292042][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   13.292046][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.292048][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.292053][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.292058][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.292064][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.292068][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.292071][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.292077][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.292083][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.292087][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.292093][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.292099][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.292106][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.292110][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.292116][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.292122][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.292124][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.292133][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.292137][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.292139][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.292142][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.292148][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.292151][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.292156][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.292166][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.292171][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   13.292180][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.292186][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.292192][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.292195][  T158]  ? idr_get_free (??:?)
[   13.292199][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.292203][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   13.292207][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.292211][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.292213][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   13.292219][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   13.292222][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.292225][  T158]  new_sync_write (fs/read_write.c:595)
[   13.292232][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.292234][  T158]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   13.292246][  T158]  vfs_write (fs/read_write.c:687)
[   13.292252][  T158]  ksys_write (fs/read_write.c:739)
[   13.292256][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.292259][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.292262][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.292267][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.292270][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.292274][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.292277][  T158] RIP: 0033:0x7f4497a5d54e
[   13.292282][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   13.292285][  T158] RSP: 002b:00007fff857dff20 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.292288][  T158] RAX: ffffffffffffffda RBX: 00007f4497bde580 RCX: 00007f4497a5d54e
[   13.292290][  T158] RDX: 0000000000000023 RSI: 000055c956f6f790 RDI: 0000000000000001
[   13.292292][  T158] RBP: 00007fff857dff30 R08: 0000000000000000 R09: 0000000000000000
[   13.292293][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   13.292295][  T158] R13: 0000000000000023 R14: 000055c956f6f790 R15: 0000000000000000
| [   14.876711][  T158] softirqs last disabled at (188220): 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))
| [   14.876713][  T158] Preemption disabled at:
| [   14.876714][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.876730][  T158] Tainted: [W]=WARN
[   14.876731][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.876733][  T158] Call Trace:
[   14.876735][  T158]  <TASK>
[   14.876737][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.876742][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.876744][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.876749][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.876753][  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)
[   14.876758][  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))
[   14.876760][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.876766][  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)
[   14.876769][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.876772][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   14.876775][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.876776][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.876779][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.876783][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.876787][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.876790][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.876791][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.876795][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.876798][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.876801][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.876805][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.876809][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.876813][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.876815][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.876819][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.876823][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.876825][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.876830][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.876832][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.876834][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.876836][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.876840][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.876842][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.876845][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.876848][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.876851][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   14.876857][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.876861][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.876865][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.876867][  T158]  ? idr_get_free (??:?)
[   14.876871][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.876874][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   14.876877][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.876880][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.876881][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.876883][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   14.876888][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.876890][  T158]  new_sync_write (fs/read_write.c:595)
[   14.876895][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.876897][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.876905][  T158]  vfs_write (fs/read_write.c:687)
[   14.876909][  T158]  ksys_write (fs/read_write.c:739)
[   14.876912][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.876914][  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)
[   14.876917][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.876920][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.876923][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.876926][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.876928][  T158] RIP: 0033:0x7f4497a5d54e
[   14.876932][  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
[   14.876934][  T158] RSP: 002b:00007fff857dff20 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.876937][  T158] RAX: ffffffffffffffda RBX: 00007f4497bde580 RCX: 00007f4497a5d54e
[   14.876939][  T158] RDX: 0000000000000023 RSI: 000055c956f6f790 RDI: 0000000000000001
[   14.876940][  T158] RBP: 00007fff857dff30 R08: 0000000000000000 R09: 0000000000000000
[   14.876941][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   14.876942][  T158] R13: 0000000000000023 R14: 000055c956f6f790 R15: 0000000000000000
| [   16.355864][  T158] softirqs last disabled at (222184): 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))
| [   16.355868][  T158] Preemption disabled at:
| [   16.355869][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   16.355882][  T158] Tainted: [W]=WARN
[   16.355884][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.355886][  T158] Call Trace:
[   16.355889][  T158]  <TASK>
[   16.355892][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.355898][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   16.355901][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.355908][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.355913][  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)
[   16.355920][  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))
[   16.355924][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.355933][  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)
[   16.355936][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.355941][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   16.355946][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.355948][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   16.355954][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.355958][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.355965][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.355970][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.355972][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.355979][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.355985][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.355990][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.355996][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.356002][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.356010][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.356013][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.356020][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.356027][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.356030][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.356039][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.356043][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.356046][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.356049][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   16.356055][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.356058][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.356063][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.356069][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.356074][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   16.356083][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   16.356089][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   16.356096][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   16.356099][  T158]  ? idr_get_free (??:?)
[   16.356103][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   16.356108][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   16.356113][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   16.356118][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.356121][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.356124][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   16.356131][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.356135][  T158]  new_sync_write (fs/read_write.c:595)
[   16.356143][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   16.356145][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.356163][  T158]  vfs_write (fs/read_write.c:687)
[   16.356171][  T158]  ksys_write (fs/read_write.c:739)
[   16.356177][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   16.356180][  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)
[   16.356185][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.356191][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.356194][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.356199][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.356203][  T158] RIP: 0033:0x7f4497a5d54e
[   16.356209][  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
[   16.356211][  T158] RSP: 002b:00007fff857dff20 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   16.356216][  T158] RAX: ffffffffffffffda RBX: 00007f4497bde580 RCX: 00007f4497a5d54e
[   16.356218][  T158] RDX: 0000000000000023 RSI: 000055c956f6f790 RDI: 0000000000000001
[   16.356220][  T158] RBP: 00007fff857dff30 R08: 0000000000000000 R09: 0000000000000000
[   16.356221][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   16.356223][  T158] R13: 0000000000000023 R14: 000055c956f6f790 R15: 0000000000000000
| [   18.007751][  T158] softirqs last disabled at (248804): 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))
| [   18.007755][  T158] Preemption disabled at:
| [   18.007756][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   18.007768][  T158] Tainted: [W]=WARN
[   18.007770][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.007772][  T158] Call Trace:
[   18.007775][  T158]  <TASK>
[   18.007777][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.007784][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   18.007787][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.007793][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.007798][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.007806][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   18.007809][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.007818][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   18.007821][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.007826][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   18.007831][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.007833][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   18.007838][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.007843][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.007850][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.007853][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.007856][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.007863][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.007869][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.007873][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.007880][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.007885][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.007893][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.007896][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.007903][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.007909][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.007912][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.007920][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.007925][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.007927][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.007931][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.007937][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.007939][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.007944][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.007950][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.007955][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   18.007963][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   18.007969][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   18.007975][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   18.007978][  T158]  ? idr_get_free (??:?)
[   18.007983][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   18.007988][  T158]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[   18.007992][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   18.007997][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.007999][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.008003][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   18.008009][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.008013][  T158]  new_sync_write (fs/read_write.c:595)
[   18.008021][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   18.008023][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.008038][  T158]  vfs_write (fs/read_write.c:687)
[   18.008045][  T158]  ksys_write (fs/read_write.c:739)
[   18.008050][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   18.008052][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   18.008056][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.008062][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.008066][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.008071][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.008074][  T158] RIP: 0033:0x7f4497a5d54e
[   18.008079][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   18.008082][  T158] RSP: 002b:00007fff857dff20 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   18.008086][  T158] RAX: ffffffffffffffda RBX: 00007f4497bde580 RCX: 00007f4497a5d54e
[   18.008088][  T158] RDX: 0000000000000023 RSI: 000055c956f6f790 RDI: 0000000000000001
[   18.008090][  T158] RBP: 00007fff857dff30 R08: 0000000000000000 R09: 0000000000000000
[   18.008091][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   18.008093][  T158] R13: 0000000000000023 R14: 000055c956f6f790 R15: 0000000000000000
| [   25.443349][  T710] softirqs last disabled at (8552): 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))
| [   25.443351][  T710] Preemption disabled at:
| [   25.443352][  T710] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.443362][  T710] Tainted: [W]=WARN
[   25.443363][  T710] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.443365][  T710] Call Trace:
[   25.443367][  T710]  <TASK>
[   25.443369][  T710]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.443374][  T710]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.443376][  T710]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.443380][  T710]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.443384][  T710]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.443389][  T710]  __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))
[   25.443391][  T710]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.443397][  T710]  ? 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)
[   25.443400][  T710]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.443403][  T710]  put_chars (drivers/char/virtio_console.c:1176)
[   25.443406][  T710]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.443407][  T710]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   25.443411][  T710]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.443414][  T710]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.443419][  T710]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.443422][  T710]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.443423][  T710]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.443427][  T710]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.443431][  T710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.443434][  T710]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.443437][  T710]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.443441][  T710]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.443446][  T710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.443448][  T710]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.443452][  T710]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.443456][  T710]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.443457][  T710]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.443463][  T710]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.443465][  T710]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.443467][  T710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.443469][  T710]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   25.443473][  T710]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.443475][  T710]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.443478][  T710]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.443481][  T710]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.443485][  T710]  ? _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)
[   25.443491][  T710]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   25.443495][  T710]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   25.443499][  T710]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   25.443501][  T710]  ? idr_get_free (??:?)
[   25.443505][  T710]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   25.443508][  T710]  ? _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)
[   25.443511][  T710]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   25.443514][  T710]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.443516][  T710]  ? handle_pte_fault (mm/memory.c:6558)
[   25.443521][  T710]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   25.443523][  T710]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.443526][  T710]  new_sync_write (fs/read_write.c:595)
[   25.443531][  T710]  ? new_sync_read (./include/linux/ioprio.h:41)
[   25.443532][  T710]  ? 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))
[   25.443542][  T710]  vfs_write (fs/read_write.c:687)
[   25.443546][  T710]  ksys_write (fs/read_write.c:739)
[   25.443549][  T710]  ? __ia32_sys_read (fs/read_write.c:723)
[   25.443551][  T710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.443553][  T710]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.443557][  T710]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.443559][  T710]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.443562][  T710]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.443565][  T710] RIP: 0033:0x7f4497a5d54e
[   25.443569][  T710] 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
[   25.443571][  T710] RSP: 002b:00007fff857df6f0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   25.443575][  T710] RAX: ffffffffffffffda RBX: 00007f4497bde580 RCX: 00007f4497a5d54e
[   25.443576][  T710] RDX: 0000000000000025 RSI: 000055c956f6f790 RDI: 0000000000000001
[   25.443577][  T710] RBP: 00007fff857df700 R08: 0000000000000000 R09: 0000000000000000
[   25.443578][  T710] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000025


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