======================================
| [   10.394721][  T171] softirqs last disabled at (32427): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.394724][  T171] Preemption disabled at:
| [   10.394725][  T171] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.394734][  T171] Tainted: [W]=WARN
[   10.394735][  T171] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.394737][  T171] Call Trace:
[   10.394738][  T171]  <TASK>
[   10.394740][  T171]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.394746][  T171]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.394748][  T171]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.394752][  T171]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.394756][  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)
[   10.394761][  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))
[   10.394763][  T171]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.394769][  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)
[   10.394771][  T171]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.394775][  T171]  put_chars (drivers/char/virtio_console.c:1176)
[   10.394777][  T171]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.394780][  T171]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.394786][  T171]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.394792][  T171]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.394794][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.394798][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.394802][  T171]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.394806][  T171]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.394810][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.394812][  T171]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.394816][  T171]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.394820][  T171]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.394821][  T171]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.394826][  T171]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.394829][  T171]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.394831][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.394833][  T171]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.394836][  T171]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.394838][  T171]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.394841][  T171]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.394845][  T171]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.394846][  T171]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.394850][  T171]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.394851][  T171]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[   10.394856][  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
[   10.394860][  T171]  _printk (kernel/printk/printk.c:2504)
[   10.394864][  T171]  ? snapshot_read.cold (user.c:?)
[   10.394867][  T171]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[   10.394871][  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
[   10.394874][  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)
[   10.394879][  T171] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[   10.394883][  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
[   10.394890][  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
[   10.394892][  T171]  do_one_initcall (init/main.c:1357)
[   10.394896][  T171]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.394901][  T171]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.394904][  T171]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.394910][  T171]  do_init_module (kernel/module/main.c:3117)
[   10.394913][  T171]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.394917][  T171]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.394920][  T171]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.394924][  T171]  load_module (kernel/module/main.c:3593)
[   10.394931][  T171]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.394935][  T171]  ? __ia32_sys_fsconfig (??:?)
[   10.394938][  T171]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.394942][  T171]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.394946][  T171]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.394949][  T171]  init_module_from_file (kernel/module/main.c:3790)
[   10.394952][  T171]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.394961][  T171]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.394964][  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)
[   10.394967][  T171]  idempotent_init_module (kernel/module/main.c:3802)
[   10.394971][  T171]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.394977][  T171]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.394979][  T171]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.394985][  T171]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.394987][  T171]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.394991][  T171]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.394993][  T171]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.394996][  T171]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.394998][  T171] RIP: 0033:0x7fb83db5437d
[   10.395001][  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
[   10.395003][  T171] RSP: 002b:00007ffc3e829808 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.395006][  T171] RAX: ffffffffffffffda RBX: 000055b4db3b1700 RCX: 00007fb83db5437d
[   10.395007][  T171] RDX: 0000000000000000 RSI: 000055b4c248dffd RDI: 0000000000000005
[   10.395008][  T171] RBP: 00007ffc3e8298a0 R08: 0000000000000000 R09: 0000000000000000
[   10.395009][  T171] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b4c248dffd
[   10.395010][  T171] R13: 000055b4db3b1810 R14: 0000000000040000 R15: 0000000000000000
| [   13.803951][  T158] softirqs last disabled at (121772): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2))
| [   13.803953][  T158] Preemption disabled at:
| [   13.803954][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.803963][  T158] Tainted: [W]=WARN
[   13.803965][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.803967][  T158] Call Trace:
[   13.803969][  T158]  <TASK>
[   13.803970][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.803975][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.803978][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.803982][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.803986][  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)
[   13.803991][  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))
[   13.803993][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.803999][  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)
[   13.804001][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.804004][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   13.804007][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.804009][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.804012][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.804015][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.804020][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.804023][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.804024][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.804028][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.804032][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.804035][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.804039][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.804042][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.804047][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.804049][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.804053][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.804057][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.804059][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.804064][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.804066][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.804068][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.804070][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.804074][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.804075][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.804079][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.804082][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.804085][  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)
[   13.804091][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.804095][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.804099][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.804101][  T158]  ? idr_get_free (??:?)
[   13.804105][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.804108][  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)
[   13.804111][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.804114][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.804115][  T158]  ? handle_pte_fault (mm/memory.c:6582)
[   13.804121][  T158]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   13.804123][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.804125][  T158]  new_sync_write (fs/read_write.c:595)
[   13.804130][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.804132][  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))
[   13.804140][  T158]  vfs_write (fs/read_write.c:687)
[   13.804144][  T158]  ksys_write (fs/read_write.c:739)
[   13.804147][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.804150][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.804152][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.804155][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.804158][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.804161][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.804164][  T158] RIP: 0033:0x7f38456d754e
[   13.804168][  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
[   13.804170][  T158] RSP: 002b:00007ffda5ff7db0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.804173][  T158] RAX: ffffffffffffffda RBX: 00007f3845858580 RCX: 00007f38456d754e
[   13.804174][  T158] RDX: 0000000000000023 RSI: 0000556eb80f0790 RDI: 0000000000000001
[   13.804175][  T158] RBP: 00007ffda5ff7dc0 R08: 0000000000000000 R09: 0000000000000000
[   13.804176][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   13.804177][  T158] R13: 0000000000000023 R14: 0000556eb80f0790 R15: 0000000000000000
| [   15.483853][  T158] softirqs last disabled at (151634): 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))
| [   15.483856][  T158] Preemption disabled at:
| [   15.483857][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.483867][  T158] Tainted: [W]=WARN
[   15.483868][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.483870][  T158] Call Trace:
[   15.483872][  T158]  <TASK>
[   15.483873][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.483879][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.483881][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.483885][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.483889][  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)
[   15.483894][  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))
[   15.483896][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.483903][  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)
[   15.483905][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.483909][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   15.483912][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.483913][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   15.483917][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.483920][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.483924][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.483928][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.483929][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.483933][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.483936][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.483940][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.483944][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.483947][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.483952][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.483954][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.483958][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.483962][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.483964][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.483969][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.483971][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.483973][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.483975][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.483979][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.483981][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.483984][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.483987][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.483990][  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)
[   15.483996][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   15.484000][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   15.484004][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   15.484006][  T158]  ? idr_get_free (??:?)
[   15.484010][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   15.484013][  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)
[   15.484016][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   15.484019][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.484020][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.484023][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   15.484027][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   15.484030][  T158]  new_sync_write (fs/read_write.c:595)
[   15.484035][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   15.484036][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.484044][  T158]  vfs_write (fs/read_write.c:687)
[   15.484048][  T158]  ksys_write (fs/read_write.c:739)
[   15.484051][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   15.484053][  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)
[   15.484056][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.484059][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.484062][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.484065][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.484067][  T158] RIP: 0033:0x7f38456d754e
[   15.484071][  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
[   15.484073][  T158] RSP: 002b:00007ffda5ff7db0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   15.484077][  T158] RAX: ffffffffffffffda RBX: 00007f3845858580 RCX: 00007f38456d754e
[   15.484078][  T158] RDX: 0000000000000023 RSI: 0000556eb80f0790 RDI: 0000000000000001
[   15.484079][  T158] RBP: 00007ffda5ff7dc0 R08: 0000000000000000 R09: 0000000000000000
[   15.484080][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   15.484081][  T158] R13: 0000000000000023 R14: 0000556eb80f0790 R15: 0000000000000000
| [   17.034317][  T158] softirqs last disabled at (180281): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   17.034320][  T158] Preemption disabled at:
| [   17.034321][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   17.034331][  T158] Tainted: [W]=WARN
[   17.034332][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.034334][  T158] Call Trace:
[   17.034335][  T158]  <TASK>
[   17.034337][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.034343][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   17.034345][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   17.034349][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   17.034353][  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)
[   17.034358][  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))
[   17.034360][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.034366][  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)
[   17.034369][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   17.034372][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   17.034375][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   17.034377][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   17.034380][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.034383][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   17.034387][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   17.034390][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.034392][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.034396][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   17.034399][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.034402][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.034406][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   17.034410][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   17.034414][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.034416][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   17.034420][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   17.034424][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   17.034426][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.034431][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   17.034434][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   17.034436][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.034438][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   17.034441][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   17.034443][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   17.034446][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   17.034450][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   17.034459][  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)
[   17.034465][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   17.034469][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   17.034473][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   17.034475][  T158]  ? idr_get_free (??:?)
[   17.034479][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   17.034482][  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)
[   17.034485][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   17.034488][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.034489][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   17.034492][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   17.034496][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   17.034499][  T158]  new_sync_write (fs/read_write.c:595)
[   17.034504][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   17.034505][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   17.034513][  T158]  vfs_write (fs/read_write.c:687)
[   17.034518][  T158]  ksys_write (fs/read_write.c:739)
[   17.034521][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   17.034522][  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)
[   17.034525][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   17.034528][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   17.034531][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   17.034534][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   17.034536][  T158] RIP: 0033:0x7f38456d754e
[   17.034541][  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
[   17.034543][  T158] RSP: 002b:00007ffda5ff7db0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   17.034546][  T158] RAX: ffffffffffffffda RBX: 00007f3845858580 RCX: 00007f38456d754e
[   17.034548][  T158] RDX: 0000000000000023 RSI: 0000556eb80f0790 RDI: 0000000000000001
[   17.034549][  T158] RBP: 00007ffda5ff7dc0 R08: 0000000000000000 R09: 0000000000000000
[   17.034550][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   17.034551][  T158] R13: 0000000000000023 R14: 0000556eb80f0790 R15: 0000000000000000
| [   18.732473][  T158] softirqs last disabled at (209457): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   18.732478][  T158] Preemption disabled at:
| [   18.732479][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   18.732492][  T158] Tainted: [W]=WARN
[   18.732493][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.732496][  T158] Call Trace:
[   18.732499][  T158]  <TASK>
[   18.732501][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.732508][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   18.732511][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.732518][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.732523][  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)
[   18.732531][  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))
[   18.732534][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.732543][  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)
[   18.732546][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.732552][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   18.732556][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.732559][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   18.732565][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.732569][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.732576][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.732580][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.732583][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.732590][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.732596][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.732601][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.732607][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.732614][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.732621][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.732625][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.732631][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.732639][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.732641][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.732651][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.732655][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.732658][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.732661][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.732668][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.732670][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.732676][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.732682][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.732687][  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)
[   18.732696][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   18.732702][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   18.732709][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   18.732711][  T158]  ? idr_get_free (??:?)
[   18.732716][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   18.732721][  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)
[   18.732726][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   18.732731][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.732733][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.732737][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   18.732744][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   18.732748][  T158]  new_sync_write (fs/read_write.c:595)
[   18.732756][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   18.732759][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.732774][  T158]  vfs_write (fs/read_write.c:687)
[   18.732781][  T158]  ksys_write (fs/read_write.c:739)
[   18.732786][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   18.732789][  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)
[   18.732793][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.732799][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.732803][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.732808][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.732811][  T158] RIP: 0033:0x7f38456d754e
[   18.732817][  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
[   18.732820][  T158] RSP: 002b:00007ffda5ff7db0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   18.732824][  T158] RAX: ffffffffffffffda RBX: 00007f3845858580 RCX: 00007f38456d754e
[   18.732826][  T158] RDX: 0000000000000023 RSI: 0000556eb80f0790 RDI: 0000000000000001
[   18.732828][  T158] RBP: 00007ffda5ff7dc0 R08: 0000000000000000 R09: 0000000000000000
[   18.732830][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   18.732831][  T158] R13: 0000000000000023 R14: 0000556eb80f0790 R15: 0000000000000000
| [   26.749793][  T721] softirqs last disabled at (3188): 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))
| [   26.749796][  T721] Preemption disabled at:
| [   26.749797][  T721] vprintk_emit (kernel/printk/printk.c:2471)
| [   26.749806][  T721] Tainted: [W]=WARN
[   26.749807][  T721] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.749809][  T721] Call Trace:
[   26.749811][  T721]  <TASK>
[   26.749812][  T721]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.749818][  T721]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   26.749820][  T721]  __might_resched.cold (kernel/sched/core.c:9234)
[   26.749825][  T721]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   26.749829][  T721]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   26.749834][  T721]  __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))
[   26.749836][  T721]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.749842][  T721]  ? 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)
[   26.749844][  T721]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   26.749848][  T721]  put_chars (drivers/char/virtio_console.c:1176)
[   26.749851][  T721]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   26.749852][  T721]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   26.749856][  T721]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   26.749859][  T721]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   26.749863][  T721]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   26.749866][  T721]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.749868][  T721]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.749872][  T721]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   26.749875][  T721]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.749878][  T721]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.749882][  T721]  console_emit_next_record (kernel/printk/printk.c:3183)
[   26.749886][  T721]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   26.749891][  T721]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.749893][  T721]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   26.749897][  T721]  console_flush_one_record (kernel/printk/printk.c:3268)
[   26.749901][  T721]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   26.749902][  T721]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   26.749908][  T721]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   26.749910][  T721]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   26.749912][  T721]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.749914][  T721]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   26.749918][  T721]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   26.749920][  T721]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   26.749923][  T721]  vprintk_emit (kernel/printk/printk.c:2479)
[   26.749926][  T721]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   26.749929][  T721]  ? _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)
[   26.749935][  T721]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   26.749940][  T721]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   26.749944][  T721]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   26.749946][  T721]  ? idr_get_free (??:?)
[   26.749949][  T721]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   26.749952][  T721]  ? _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)
[   26.749955][  T721]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   26.749958][  T721]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.749960][  T721]  ? handle_pte_fault (mm/memory.c:6558)
[   26.749965][  T721]  ? do_numa_page.isra.0 (mm/memory.c:6319 (discriminator 1))
[   26.749968][  T721]  ? vprintk_default (kernel/printk/printk.c:2494)
[   26.749970][  T721]  new_sync_write (fs/read_write.c:595)
[   26.749975][  T721]  ? new_sync_read (./include/linux/ioprio.h:41)
[   26.749977][  T721]  ? 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))
[   26.749985][  T721]  vfs_write (fs/read_write.c:687)
[   26.749990][  T721]  ksys_write (fs/read_write.c:739)
[   26.749993][  T721]  ? __ia32_sys_read (fs/read_write.c:723)
[   26.749995][  T721]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.749997][  T721]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   26.750001][  T721]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   26.750003][  T721]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   26.750006][  T721]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.750009][  T721] RIP: 0033:0x7f38456d754e
[   26.750013][  T721] 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
[   26.750015][  T721] RSP: 002b:00007ffda5ff7580 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   26.750018][  T721] RAX: ffffffffffffffda RBX: 00007f3845858580 RCX: 00007f38456d754e
[   26.750020][  T721] RDX: 0000000000000025 RSI: 0000556eb80f0790 RDI: 0000000000000001
[   26.750021][  T721] RBP: 00007ffda5ff7590 R08: 0000000000000000 R09: 0000000000000000
[   26.750022][  T721] 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