======================================
| [   10.503313][  T171] softirqs last disabled at (23933): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.503316][  T171] Preemption disabled at:
| [   10.503317][  T171] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.503326][  T171] Tainted: [W]=WARN
[   10.503326][  T171] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.503328][  T171] Call Trace:
[   10.503330][  T171]  <TASK>
[   10.503332][  T171]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.503337][  T171]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.503339][  T171]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.503344][  T171]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.503348][  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)
[   10.503352][  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))
[   10.503354][  T171]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.503360][  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)
[   10.503363][  T171]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.503366][  T171]  put_chars (drivers/char/virtio_console.c:1176)
[   10.503369][  T171]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.503372][  T171]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.503377][  T171]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.503384][  T171]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.503386][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.503390][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.503394][  T171]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.503398][  T171]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.503402][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.503404][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.503408][  T171]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.503412][  T171]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.503413][  T171]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.503418][  T171]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.503421][  T171]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.503422][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.503424][  T171]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.503428][  T171]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.503429][  T171]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.503432][  T171]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.503436][  T171]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.503438][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.503441][  T171]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.503443][  T171]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.503448][  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
[   10.503454][  T171]  _printk (kernel/printk/printk.c:2504)
[   10.503458][  T171]  ? snapshot_read.cold (user.c:?)
[   10.503460][  T171]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.503464][  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
[   10.503467][  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)
[   10.503472][  T171] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.503475][  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
[   10.503482][  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
[   10.503485][  T171]  do_one_initcall (init/main.c:1357)
[   10.503488][  T171]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.503493][  T171]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.503496][  T171]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.503502][  T171]  do_init_module (kernel/module/main.c:3117)
[   10.503505][  T171]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.503509][  T171]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.503512][  T171]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.503516][  T171]  load_module (kernel/module/main.c:3593)
[   10.503523][  T171]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.503526][  T171]  ? __ia32_sys_fsconfig (??:?)
[   10.503529][  T171]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.503537][  T171]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.503540][  T171]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.503544][  T171]  init_module_from_file (kernel/module/main.c:3790)
[   10.503547][  T171]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.503555][  T171]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.503558][  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)
[   10.503561][  T171]  idempotent_init_module (kernel/module/main.c:3802)
[   10.503565][  T171]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.503571][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.503573][  T171]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.503579][  T171]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.503581][  T171]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.503585][  T171]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.503587][  T171]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.503590][  T171]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.503592][  T171] RIP: 0033:0x7fea78f6137d
[   10.503595][  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
[   10.503597][  T171] RSP: 002b:00007ffe16596098 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.503600][  T171] RAX: ffffffffffffffda RBX: 000055abc118d700 RCX: 00007fea78f6137d
[   10.503601][  T171] RDX: 0000000000000000 RSI: 000055abbb8b3ffd RDI: 0000000000000005
[   10.503602][  T171] RBP: 00007ffe16596130 R08: 0000000000000000 R09: 0000000000000000
[   10.503603][  T171] R10: 0000000000000000 R11: 0000000000000246 R12: 000055abbb8b3ffd
[   10.503604][  T171] R13: 000055abc118d810 R14: 0000000000040000 R15: 0000000000000000
| [   14.034922][  T158] softirqs last disabled at (150400): 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))
| [   14.034924][  T158] Preemption disabled at:
| [   14.034925][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.034934][  T158] Tainted: [W]=WARN
[   14.034935][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.034937][  T158] Call Trace:
[   14.034939][  T158]  <TASK>
[   14.034941][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.034946][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.034948][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.034953][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.034957][  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)
[   14.034962][  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))
[   14.034964][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.034970][  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)
[   14.034972][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.034975][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   14.034978][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.034980][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.034983][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.034986][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.034990][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.034993][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.034994][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.034999][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.035002][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.035005][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.035009][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.035013][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.035017][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.035019][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.035023][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.035027][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.035028][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.035034][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.035036][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.035038][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.035040][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.035044][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.035045][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.035048][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.035052][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.035055][  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)
[   14.035060][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.035065][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.035069][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.035070][  T158]  ? idr_get_free (??:?)
[   14.035074][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.035077][  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)
[   14.035080][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.035083][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.035085][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   14.035090][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   14.035092][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.035095][  T158]  new_sync_write (fs/read_write.c:595)
[   14.035099][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.035101][  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))
[   14.035109][  T158]  vfs_write (fs/read_write.c:687)
[   14.035114][  T158]  ksys_write (fs/read_write.c:739)
[   14.035117][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.035119][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.035121][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.035124][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.035127][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.035130][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.035132][  T158] RIP: 0033:0x7f0b5e45854e
[   14.035136][  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
[   14.035139][  T158] RSP: 002b:00007ffe9f2de830 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.035142][  T158] RAX: ffffffffffffffda RBX: 00007f0b5e5d9580 RCX: 00007f0b5e45854e
[   14.035143][  T158] RDX: 0000000000000023 RSI: 0000557b8fbd4790 RDI: 0000000000000001
[   14.035144][  T158] RBP: 00007ffe9f2de840 R08: 0000000000000000 R09: 0000000000000000
[   14.035145][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   14.035146][  T158] R13: 0000000000000023 R14: 0000557b8fbd4790 R15: 0000000000000000
| [   15.768210][  T158] softirqs last disabled at (178476): 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))
| [   15.768212][  T158] Preemption disabled at:
| [   15.768213][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.768223][  T158] Tainted: [W]=WARN
[   15.768224][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.768226][  T158] Call Trace:
[   15.768228][  T158]  <TASK>
[   15.768230][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.768235][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.768237][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.768241][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.768245][  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)
[   15.768250][  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))
[   15.768252][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.768258][  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)
[   15.768260][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.768263][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   15.768266][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.768268][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.768271][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.768274][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.768278][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.768281][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.768283][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.768287][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.768290][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.768293][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.768297][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.768301][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.768305][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.768307][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.768311][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.768315][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.768317][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.768322][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.768324][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.768326][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.768328][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.768332][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.768333][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.768336][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.768340][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.768343][  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)
[   15.768349][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.768353][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.768357][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.768359][  T158]  ? idr_get_free (??:?)
[   15.768363][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.768366][  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)
[   15.768369][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.768371][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.768373][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.768375][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.768380][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.768382][  T158]  new_sync_write (fs/read_write.c:595)
[   15.768387][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.768389][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.768397][  T158]  vfs_write (fs/read_write.c:687)
[   15.768401][  T158]  ksys_write (fs/read_write.c:739)
[   15.768404][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.768406][  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)
[   15.768408][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.768412][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.768414][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.768417][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.768420][  T158] RIP: 0033:0x7f0b5e45854e
[   15.768424][  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
[   15.768426][  T158] RSP: 002b:00007ffe9f2de830 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.768429][  T158] RAX: ffffffffffffffda RBX: 00007f0b5e5d9580 RCX: 00007f0b5e45854e
[   15.768430][  T158] RDX: 0000000000000023 RSI: 0000557b8fbd4790 RDI: 0000000000000001
[   15.768431][  T158] RBP: 00007ffe9f2de840 R08: 0000000000000000 R09: 0000000000000000
[   15.768432][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.768433][  T158] R13: 0000000000000023 R14: 0000557b8fbd4790 R15: 0000000000000000
| [   17.493598][  T158] softirqs last disabled at (204417): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   17.493602][  T158] Preemption disabled at:
| [   17.493602][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.493612][  T158] Tainted: [W]=WARN
[   17.493613][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.493615][  T158] Call Trace:
[   17.493617][  T158]  <TASK>
[   17.493619][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.493624][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.493626][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.493631][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.493634][  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)
[   17.493639][  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))
[   17.493641][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.493647][  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)
[   17.493649][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.493652][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   17.493655][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.493656][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   17.493660][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.493662][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.493666][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.493669][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.493671][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.493675][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.493678][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.493681][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.493684][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.493688][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.493692][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.493694][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.493698][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.493702][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.493704][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.493708][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.493711][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.493712][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.493715][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.493718][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.493720][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.493723][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.493726][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.493729][  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)
[   17.493734][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   17.493739][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   17.493742][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   17.493744][  T158]  ? idr_get_free (??:?)
[   17.493748][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   17.493751][  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)
[   17.493753][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   17.493756][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.493758][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.493760][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   17.493764][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.493767][  T158]  new_sync_write (fs/read_write.c:595)
[   17.493771][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.493773][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.493781][  T158]  vfs_write (fs/read_write.c:687)
[   17.493785][  T158]  ksys_write (fs/read_write.c:739)
[   17.493788][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.493789][  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)
[   17.493792][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.493797][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.493800][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.493803][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.493806][  T158] RIP: 0033:0x7f0b5e45854e
[   17.493810][  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
[   17.493812][  T158] RSP: 002b:00007ffe9f2de830 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.493815][  T158] RAX: ffffffffffffffda RBX: 00007f0b5e5d9580 RCX: 00007f0b5e45854e
[   17.493816][  T158] RDX: 0000000000000023 RSI: 0000557b8fbd4790 RDI: 0000000000000001
[   17.493817][  T158] RBP: 00007ffe9f2de840 R08: 0000000000000000 R09: 0000000000000000
[   17.493818][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   17.493819][  T158] R13: 0000000000000023 R14: 0000557b8fbd4790 R15: 0000000000000000
| [   19.152241][  T158] softirqs last disabled at (233202): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   19.152243][  T158] Preemption disabled at:
| [   19.152244][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   19.152254][  T158] Tainted: [W]=WARN
[   19.152255][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.152257][  T158] Call Trace:
[   19.152259][  T158]  <TASK>
[   19.152260][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.152266][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   19.152268][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.152272][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.152276][  T158]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.152281][  T158]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   19.152283][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.152289][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   19.152292][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.152295][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   19.152298][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.152299][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   19.152302][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.152305][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.152309][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.152312][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.152314][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.152318][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.152321][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.152324][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.152328][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.152332][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.152336][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.152338][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.152341][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.152345][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.152347][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.152352][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.152354][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.152356][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.152358][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   19.152362][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.152363][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.152366][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.152370][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.152373][  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)
[   19.152379][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   19.152383][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   19.152387][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   19.152388][  T158]  ? idr_get_free (??:?)
[   19.152392][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   19.152395][  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)
[   19.152398][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   19.152401][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   19.152403][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.152405][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   19.152409][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   19.152411][  T158]  new_sync_write (fs/read_write.c:595)
[   19.152416][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   19.152418][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.152426][  T158]  vfs_write (fs/read_write.c:687)
[   19.152430][  T158]  ksys_write (fs/read_write.c:739)
[   19.152433][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   19.152434][  T158]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   19.152437][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.152440][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.152443][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.152446][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.152448][  T158] RIP: 0033:0x7f0b5e45854e
[   19.152455][  T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   19.152457][  T158] RSP: 002b:00007ffe9f2de830 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   19.152460][  T158] RAX: ffffffffffffffda RBX: 00007f0b5e5d9580 RCX: 00007f0b5e45854e
[   19.152462][  T158] RDX: 0000000000000023 RSI: 0000557b8fbd4790 RDI: 0000000000000001
[   19.152463][  T158] RBP: 00007ffe9f2de840 R08: 0000000000000000 R09: 0000000000000000
[   19.152464][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   19.152465][  T158] R13: 0000000000000023 R14: 0000557b8fbd4790 R15: 0000000000000000
| [   26.748468][  T723] softirqs last disabled at (3512): 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))
| [   26.748470][  T723] Preemption disabled at:
| [   26.748471][  T723] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.748481][  T723] Tainted: [W]=WARN
[   26.748482][  T723] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.748484][  T723] Call Trace:
[   26.748486][  T723]  <TASK>
[   26.748488][  T723]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.748493][  T723]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.748495][  T723]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.748499][  T723]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.748503][  T723]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.748508][  T723]  __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))
[   26.748510][  T723]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.748515][  T723]  ? 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)
[   26.748518][  T723]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.748521][  T723]  put_chars (drivers/char/virtio_console.c:1176)
[   26.748524][  T723]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.748525][  T723]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.748529][  T723]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.748531][  T723]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.748536][  T723]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.748538][  T723]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.748540][  T723]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.748544][  T723]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.748547][  T723]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.748550][  T723]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.748554][  T723]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.748558][  T723]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.748562][  T723]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.748564][  T723]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.748568][  T723]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.748572][  T723]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.748573][  T723]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.748578][  T723]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.748581][  T723]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.748583][  T723]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.748585][  T723]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   26.748588][  T723]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.748590][  T723]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.748593][  T723]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.748596][  T723]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.748600][  T723]  ? _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)
[   26.748605][  T723]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   26.748610][  T723]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   26.748614][  T723]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   26.748615][  T723]  ? idr_get_free (??:?)
[   26.748619][  T723]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   26.748622][  T723]  ? _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)
[   26.748625][  T723]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   26.748628][  T723]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.748629][  T723]  ? handle_pte_fault (mm/memory.c:6558)
[   26.748634][  T723]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   26.748641][  T723]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.748644][  T723]  new_sync_write (fs/read_write.c:595)
[   26.748649][  T723]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.748650][  T723]  ? 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))
[   26.748658][  T723]  vfs_write (fs/read_write.c:687)
[   26.748663][  T723]  ksys_write (fs/read_write.c:739)
[   26.748666][  T723]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.748668][  T723]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.748670][  T723]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.748674][  T723]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.748676][  T723]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.748679][  T723]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.748682][  T723] RIP: 0033:0x7f0b5e45854e
[   26.748686][  T723] 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
[   26.748688][  T723] RSP: 002b:00007ffe9f2de000 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   26.748691][  T723] RAX: ffffffffffffffda RBX: 00007f0b5e5d9580 RCX: 00007f0b5e45854e
[   26.748692][  T723] RDX: 0000000000000025 RSI: 0000557b8fbd4790 RDI: 0000000000000001
[   26.748693][  T723] RBP: 00007ffe9f2de010 R08: 0000000000000000 R09: 0000000000000000
[   26.748694][  T723] 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