======================================
| [    9.828862][  T171] softirqs last disabled at (29869): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.828865][  T171] Preemption disabled at:
| [    9.828866][  T171] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.828874][  T171] Tainted: [W]=WARN
[    9.828875][  T171] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.828877][  T171] Call Trace:
[    9.828879][  T171]  <TASK>
[    9.828880][  T171]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.828886][  T171]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.828888][  T171]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.828892][  T171]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.828896][  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)
[    9.828901][  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))
[    9.828903][  T171]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.828909][  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)
[    9.828911][  T171]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.828914][  T171]  put_chars (drivers/char/virtio_console.c:1176)
[    9.828917][  T171]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.828920][  T171]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.828925][  T171]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.828932][  T171]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.828934][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.828938][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.828942][  T171]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.828945][  T171]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.828950][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.828952][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.828955][  T171]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.828960][  T171]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.828961][  T171]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.828966][  T171]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.828969][  T171]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.828970][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.828972][  T171]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.828976][  T171]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.828977][  T171]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.828980][  T171]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.828984][  T171]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.828986][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.828990][  T171]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.828991][  T171]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.828996][  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
[    9.829000][  T171]  _printk (kernel/printk/printk.c:2504)
[    9.829004][  T171]  ? snapshot_read.cold (user.c:?)
[    9.829007][  T171]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.829010][  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
[    9.829014][  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)
[    9.829019][  T171] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.829022][  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
[    9.829029][  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
[    9.829032][  T171]  do_one_initcall (init/main.c:1357)
[    9.829035][  T171]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.829041][  T171]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.829043][  T171]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.829049][  T171]  do_init_module (kernel/module/main.c:3117)
[    9.829052][  T171]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.829057][  T171]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.829060][  T171]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.829064][  T171]  load_module (kernel/module/main.c:3593)
[    9.829071][  T171]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.829074][  T171]  ? __ia32_sys_fsconfig (??:?)
[    9.829078][  T171]  ? ovl_real_file (fs/overlayfs/file.c:195)
[    9.829081][  T171]  ? backing_file_read_iter (fs/backing-file.c:211)
[    9.829085][  T171]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.829089][  T171]  init_module_from_file (kernel/module/main.c:3790)
[    9.829093][  T171]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.829101][  T171]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.829104][  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)
[    9.829107][  T171]  idempotent_init_module (kernel/module/main.c:3802)
[    9.829110][  T171]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.829117][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.829119][  T171]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.829125][  T171]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.829127][  T171]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.829131][  T171]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.829133][  T171]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.829136][  T171]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.829138][  T171] RIP: 0033:0x7fdbe85df37d
[    9.829141][  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
[    9.829143][  T171] RSP: 002b:00007fff216bbdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.829146][  T171] RAX: ffffffffffffffda RBX: 000055db7afc4700 RCX: 00007fdbe85df37d
[    9.829147][  T171] RDX: 0000000000000000 RSI: 000055db58495ffd RDI: 0000000000000005
[    9.829148][  T171] RBP: 00007fff216bbe50 R08: 0000000000000000 R09: 0000000000000000
[    9.829149][  T171] R10: 0000000000000000 R11: 0000000000000246 R12: 000055db58495ffd
[    9.829150][  T171] R13: 000055db7afc4810 R14: 0000000000040000 R15: 0000000000000000
| [   13.164444][  T158] softirqs last disabled at (139843): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   13.164447][  T158] Preemption disabled at:
| [   13.164447][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.164457][  T158] Tainted: [W]=WARN
[   13.164458][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.164460][  T158] Call Trace:
[   13.164462][  T158]  <TASK>
[   13.164464][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.164470][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.164472][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.164477][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.164481][  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)
[   13.164485][  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))
[   13.164487][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.164493][  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)
[   13.164496][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.164499][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   13.164502][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.164503][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.164506][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.164509][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.164514][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.164516][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.164518][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.164522][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.164525][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.164528][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.164531][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.164535][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.164539][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.164541][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.164545][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.164549][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.164550][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.164555][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.164558][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.164559][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.164561][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.164565][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.164566][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.164569][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.164572][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.164575][  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)
[   13.164581][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.164586][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.164590][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.164591][  T158]  ? idr_get_free (??:?)
[   13.164596][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.164598][  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)
[   13.164601][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.164604][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.164606][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   13.164610][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   13.164613][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.164615][  T158]  new_sync_write (fs/read_write.c:595)
[   13.164620][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.164621][  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))
[   13.164629][  T158]  vfs_write (fs/read_write.c:687)
[   13.164634][  T158]  ksys_write (fs/read_write.c:739)
[   13.164636][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.164638][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.164641][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.164644][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.164646][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.164649][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.164652][  T158] RIP: 0033:0x7f28eadb854e
[   13.164656][  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
[   13.164657][  T158] RSP: 002b:00007ffdbc595110 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.164660][  T158] RAX: ffffffffffffffda RBX: 00007f28eaf39580 RCX: 00007f28eadb854e
[   13.164662][  T158] RDX: 0000000000000023 RSI: 00005638acc97790 RDI: 0000000000000001
[   13.164663][  T158] RBP: 00007ffdbc595120 R08: 0000000000000000 R09: 0000000000000000
[   13.164664][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   13.164665][  T158] R13: 0000000000000023 R14: 00005638acc97790 R15: 0000000000000000
| [   14.855820][  T158] softirqs last disabled at (164754): 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))
| [   14.855822][  T158] Preemption disabled at:
| [   14.855823][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.855833][  T158] Tainted: [W]=WARN
[   14.855834][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.855836][  T158] Call Trace:
[   14.855838][  T158]  <TASK>
[   14.855839][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.855845][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.855847][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.855852][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.855856][  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)
[   14.855861][  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))
[   14.855863][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.855869][  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)
[   14.855872][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.855875][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   14.855878][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.855879][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   14.855883][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.855886][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.855890][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.855893][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.855895][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.855899][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.855902][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.855905][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.855909][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.855913][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.855917][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.855920][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.855923][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.855928][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.855929][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.855934][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.855937][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.855939][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.855941][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.855944][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.855946][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.855949][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.855953][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.855956][  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)
[   14.855962][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   14.855967][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   14.855971][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   14.855972][  T158]  ? idr_get_free (??:?)
[   14.855976][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   14.855979][  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)
[   14.855982][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   14.855985][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.855987][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.855989][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   14.855994][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   14.855996][  T158]  new_sync_write (fs/read_write.c:595)
[   14.856001][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   14.856003][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.856011][  T158]  vfs_write (fs/read_write.c:687)
[   14.856015][  T158]  ksys_write (fs/read_write.c:739)
[   14.856018][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   14.856020][  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)
[   14.856022][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.856026][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.856028][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.856031][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.856034][  T158] RIP: 0033:0x7f28eadb854e
[   14.856038][  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
[   14.856040][  T158] RSP: 002b:00007ffdbc595110 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   14.856043][  T158] RAX: ffffffffffffffda RBX: 00007f28eaf39580 RCX: 00007f28eadb854e
[   14.856045][  T158] RDX: 0000000000000023 RSI: 00005638acc97790 RDI: 0000000000000001
[   14.856046][  T158] RBP: 00007ffdbc595120 R08: 0000000000000000 R09: 0000000000000000
[   14.856047][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   14.856048][  T158] R13: 0000000000000023 R14: 00005638acc97790 R15: 0000000000000000
| [   16.343020][  T158] softirqs last disabled at (192670): 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))
| [   16.343022][  T158] Preemption disabled at:
| [   16.343023][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   16.343033][  T158] Tainted: [W]=WARN
[   16.343034][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.343036][  T158] Call Trace:
[   16.343038][  T158]  <TASK>
[   16.343040][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.343045][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   16.343047][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.343052][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.343056][  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)
[   16.343061][  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))
[   16.343063][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.343069][  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)
[   16.343072][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.343075][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   16.343078][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.343079][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   16.343083][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.343086][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.343090][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.343093][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.343094][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.343098][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.343102][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.343105][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.343108][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.343112][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.343116][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.343118][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.343122][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.343126][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.343128][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.343133][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.343135][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.343137][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.343139][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   16.343142][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.343144][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.343147][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.343150][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.343153][  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)
[   16.343159][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   16.343167][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   16.343171][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   16.343173][  T158]  ? idr_get_free (??:?)
[   16.343177][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   16.343180][  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)
[   16.343183][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   16.343185][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.343187][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.343189][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   16.343194][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.343197][  T158]  new_sync_write (fs/read_write.c:595)
[   16.343202][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   16.343203][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.343211][  T158]  vfs_write (fs/read_write.c:687)
[   16.343215][  T158]  ksys_write (fs/read_write.c:739)
[   16.343218][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   16.343220][  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)
[   16.343223][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.343226][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.343229][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.343232][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.343234][  T158] RIP: 0033:0x7f28eadb854e
[   16.343238][  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
[   16.343240][  T158] RSP: 002b:00007ffdbc595110 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   16.343243][  T158] RAX: ffffffffffffffda RBX: 00007f28eaf39580 RCX: 00007f28eadb854e
[   16.343245][  T158] RDX: 0000000000000023 RSI: 00005638acc97790 RDI: 0000000000000001
[   16.343246][  T158] RBP: 00007ffdbc595120 R08: 0000000000000000 R09: 0000000000000000
[   16.343247][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   16.343248][  T158] R13: 0000000000000023 R14: 00005638acc97790 R15: 0000000000000000
| [   18.027370][  T158] softirqs last disabled at (220943): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   18.027374][  T158] Preemption disabled at:
| [   18.027375][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   18.027387][  T158] Tainted: [W]=WARN
[   18.027388][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.027391][  T158] Call Trace:
[   18.027393][  T158]  <TASK>
[   18.027396][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.027403][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   18.027406][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.027412][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.027418][  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)
[   18.027425][  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))
[   18.027428][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.027437][  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)
[   18.027440][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.027446][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   18.027450][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.027452][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   18.027458][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.027462][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.027469][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.027473][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.027475][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.027483][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.027488][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.027493][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.027499][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.027505][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.027512][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.027516][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.027522][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.027529][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.027531][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.027540][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.027545][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.027547][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.027550][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.027556][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.027559][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.027564][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.027570][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.027575][  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)
[   18.027583][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   18.027589][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   18.027596][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   18.027598][  T158]  ? idr_get_free (??:?)
[   18.027603][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   18.027608][  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)
[   18.027612][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   18.027617][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.027620][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.027623][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   18.027630][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.027634][  T158]  new_sync_write (fs/read_write.c:595)
[   18.027641][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   18.027644][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.027658][  T158]  vfs_write (fs/read_write.c:687)
[   18.027665][  T158]  ksys_write (fs/read_write.c:739)
[   18.027670][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   18.027673][  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)
[   18.027677][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.027683][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.027686][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.027691][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.027695][  T158] RIP: 0033:0x7f28eadb854e
[   18.027700][  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
[   18.027703][  T158] RSP: 002b:00007ffdbc595110 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   18.027707][  T158] RAX: ffffffffffffffda RBX: 00007f28eaf39580 RCX: 00007f28eadb854e
[   18.027709][  T158] RDX: 0000000000000023 RSI: 00005638acc97790 RDI: 0000000000000001
[   18.027711][  T158] RBP: 00007ffdbc595120 R08: 0000000000000000 R09: 0000000000000000
[   18.027713][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   18.027714][  T158] R13: 0000000000000023 R14: 00005638acc97790 R15: 0000000000000000
| [   25.017586][  T722] softirqs last disabled at (2102): 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))
| [   25.017588][  T722] Preemption disabled at:
| [   25.017589][  T722] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.017599][  T722] Tainted: [W]=WARN
[   25.017600][  T722] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.017602][  T722] Call Trace:
[   25.017604][  T722]  <TASK>
[   25.017605][  T722]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.017610][  T722]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.017612][  T722]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.017617][  T722]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.017621][  T722]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.017625][  T722]  __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))
[   25.017627][  T722]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.017633][  T722]  ? 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)
[   25.017636][  T722]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.017639][  T722]  put_chars (drivers/char/virtio_console.c:1176)
[   25.017642][  T722]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.017643][  T722]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   25.017646][  T722]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.017649][  T722]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.017653][  T722]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.017656][  T722]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.017658][  T722]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.017662][  T722]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.017665][  T722]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.017668][  T722]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.017671][  T722]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.017675][  T722]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.017679][  T722]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.017681][  T722]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.017685][  T722]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.017688][  T722]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.017690][  T722]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.017695][  T722]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.017697][  T722]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.017699][  T722]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.017701][  T722]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   25.017704][  T722]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.017706][  T722]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.017709][  T722]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.017712][  T722]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.017715][  T722]  ? _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)
[   25.017721][  T722]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   25.017725][  T722]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   25.017729][  T722]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   25.017730][  T722]  ? idr_get_free (??:?)
[   25.017734][  T722]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   25.017737][  T722]  ? _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)
[   25.017740][  T722]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   25.017743][  T722]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.017744][  T722]  ? handle_pte_fault (mm/memory.c:6558)
[   25.017749][  T722]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   25.017751][  T722]  ? vprintk_default (kernel/printk/printk.c:2494)
[   25.017754][  T722]  new_sync_write (fs/read_write.c:595)
[   25.017759][  T722]  ? new_sync_read (./include/linux/ioprio.h:41)
[   25.017760][  T722]  ? 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))
[   25.017768][  T722]  vfs_write (fs/read_write.c:687)
[   25.017772][  T722]  ksys_write (fs/read_write.c:739)
[   25.017775][  T722]  ? __ia32_sys_read (fs/read_write.c:723)
[   25.017777][  T722]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.017780][  T722]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.017783][  T722]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.017785][  T722]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.017788][  T722]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.017791][  T722] RIP: 0033:0x7f28eadb854e
[   25.017795][  T722] 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
[   25.017796][  T722] RSP: 002b:00007ffdbc5948e0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   25.017799][  T722] RAX: ffffffffffffffda RBX: 00007f28eaf39580 RCX: 00007f28eadb854e
[   25.017801][  T722] RDX: 0000000000000025 RSI: 00005638acc97790 RDI: 0000000000000001
[   25.017802][  T722] RBP: 00007ffdbc5948f0 R08: 0000000000000000 R09: 0000000000000000
[   25.017803][  T722] 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