======================================
| [    9.552421][  T170] softirqs last disabled at (40193): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.552425][  T170] Preemption disabled at:
| [    9.552426][  T170] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.552438][  T170] Tainted: [W]=WARN
[    9.552439][  T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.552441][  T170] Call Trace:
[    9.552443][  T170]  <TASK>
[    9.552446][  T170]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.552452][  T170]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.552455][  T170]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.552462][  T170]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.552467][  T170]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.552473][  T170]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[    9.552477][  T170]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.552485][  T170]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.552488][  T170]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.552494][  T170]  put_chars (drivers/char/virtio_console.c:1176)
[    9.552498][  T170]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.552503][  T170]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.552511][  T170]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.552521][  T170]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.552525][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.552530][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.552537][  T170]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.552543][  T170]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.552549][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.552553][  T170]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.552559][  T170]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.552566][  T170]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.552568][  T170]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.552577][  T170]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.552581][  T170]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.552583][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.552587][  T170]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.552592][  T170]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.552594][  T170]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.552600][  T170]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.552606][  T170]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.552608][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.552614][  T170]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.552616][  T170]  ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2))
[    9.552623][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    9.552629][  T170]  _printk (kernel/printk/printk.c:2504)
[    9.552634][  T170]  ? snapshot_read.cold (user.c:?)
[    9.552638][  T170]  ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1))
[    9.552644][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    9.552651][  T170]  ? configfs_register_subsystem (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 fs/configfs/dir.c:173 fs/configfs/dir.c:171 fs/configfs/dir.c:1929)
[    9.552657][  T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole
[    9.552663][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    9.552676][  T170]  ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole
[    9.552681][  T170]  do_one_initcall (init/main.c:1357)
[    9.552686][  T170]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.552695][  T170]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.552698][  T170]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.552706][  T170]  do_init_module (kernel/module/main.c:3117)
[    9.552711][  T170]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.552717][  T170]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.552722][  T170]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.552728][  T170]  load_module (kernel/module/main.c:3593)
[    9.552740][  T170]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.552746][  T170]  ? __ia32_sys_fsconfig (??:?)
[    9.552751][  T170]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[    9.552756][  T170]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.552762][  T170]  init_module_from_file (kernel/module/main.c:3790)
[    9.552768][  T170]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.552781][  T170]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.552787][  T170]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[    9.552791][  T170]  idempotent_init_module (kernel/module/main.c:3802)
[    9.552797][  T170]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.552807][  T170]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.552810][  T170]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.552819][  T170]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.552822][  T170]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.552828][  T170]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.552831][  T170]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.552835][  T170]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.552839][  T170] RIP: 0033:0x7fb68838837d
[    9.552844][  T170] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[    9.552847][  T170] RSP: 002b:00007ffffb88be08 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.552851][  T170] RAX: ffffffffffffffda RBX: 000055bdb20fa700 RCX: 00007fb68838837d
[    9.552852][  T170] RDX: 0000000000000000 RSI: 000055bda7c0dffd RDI: 0000000000000005
[    9.552854][  T170] RBP: 00007ffffb88bea0 R08: 0000000000000000 R09: 0000000000000000
[    9.552855][  T170] R10: 0000000000000000 R11: 0000000000000246 R12: 000055bda7c0dffd
[    9.552857][  T170] R13: 000055bdb20fa810 R14: 0000000000040000 R15: 0000000000000000
| [   13.127475][  T158] softirqs last disabled at (130142): 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))
| [   13.127477][  T158] Preemption disabled at:
| [   13.127477][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.127487][  T158] Tainted: [W]=WARN
[   13.127488][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.127490][  T158] Call Trace:
[   13.127492][  T158]  <TASK>
[   13.127493][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.127499][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.127501][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.127505][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.127509][  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)
[   13.127513][  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))
[   13.127515][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.127521][  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)
[   13.127523][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.127526][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   13.127529][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.127531][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   13.127534][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.127537][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.127541][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.127544][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.127545][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.127549][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.127552][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.127556][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.127559][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.127563][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.127567][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.127569][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.127572][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.127576][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.127578][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.127583][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.127585][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.127587][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.127589][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.127592][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.127594][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.127597][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.127600][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.127603][  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)
[   13.127609][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   13.127613][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   13.127616][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   13.127618][  T158]  ? idr_get_free (??:?)
[   13.127622][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   13.127625][  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)
[   13.127628][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   13.127630][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.127632][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.127634][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   13.127638][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   13.127641][  T158]  new_sync_write (fs/read_write.c:595)
[   13.127645][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   13.127647][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.127654][  T158]  vfs_write (fs/read_write.c:687)
[   13.127659][  T158]  ksys_write (fs/read_write.c:739)
[   13.127661][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   13.127663][  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)
[   13.127666][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.127669][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.127671][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.127674][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.127677][  T158] RIP: 0033:0x7f237e88054e
[   13.127681][  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
[   13.127683][  T158] RSP: 002b:00007ffe1a859d30 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   13.127686][  T158] RAX: ffffffffffffffda RBX: 00007f237ea01580 RCX: 00007f237e88054e
[   13.127687][  T158] RDX: 0000000000000023 RSI: 0000561946d6eab0 RDI: 0000000000000001
[   13.127688][  T158] RBP: 00007ffe1a859d40 R08: 0000000000000000 R09: 0000000000000000
[   13.127689][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   13.127690][  T158] R13: 0000000000000023 R14: 0000561946d6eab0 R15: 0000000000000000
| [   16.936364][  T158] softirqs last disabled at (253117): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   16.936367][  T158] Preemption disabled at:
| [   16.936367][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   16.936377][  T158] Tainted: [W]=WARN
[   16.936378][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.936380][  T158] Call Trace:
[   16.936381][  T158]  <TASK>
[   16.936383][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   16.936389][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   16.936391][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   16.936395][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   16.936399][  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)
[   16.936404][  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))
[   16.936406][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.936411][  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)
[   16.936414][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   16.936417][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   16.936420][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   16.936421][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   16.936424][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.936427][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   16.936431][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   16.936434][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.936436][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.936440][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   16.936443][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.936446][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.936449][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   16.936453][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   16.936457][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.936459][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   16.936462][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   16.936466][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   16.936468][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.936473][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   16.936475][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   16.936477][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.936479][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   16.936482][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   16.936484][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   16.936487][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   16.936490][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   16.936493][  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)
[   16.936499][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   16.936503][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   16.936507][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   16.936509][  T158]  ? idr_get_free (??:?)
[   16.936513][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   16.936516][  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)
[   16.936518][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   16.936521][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.936523][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   16.936525][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   16.936529][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   16.936531][  T158]  new_sync_write (fs/read_write.c:595)
[   16.936537][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   16.936538][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   16.936546][  T158]  vfs_write (fs/read_write.c:687)
[   16.936550][  T158]  ksys_write (fs/read_write.c:739)
[   16.936553][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   16.936554][  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)
[   16.936557][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   16.936560][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   16.936563][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   16.936566][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   16.936568][  T158] RIP: 0033:0x7f237e88054e
[   16.936572][  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
[   16.936574][  T158] RSP: 002b:00007ffe1a859d30 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   16.936577][  T158] RAX: ffffffffffffffda RBX: 00007f237ea01580 RCX: 00007f237e88054e
[   16.936579][  T158] RDX: 0000000000000023 RSI: 0000561946d6eab0 RDI: 0000000000000001
[   16.936580][  T158] RBP: 00007ffe1a859d40 R08: 0000000000000000 R09: 0000000000000000
[   16.936580][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023
[   16.936581][  T158] R13: 0000000000000023 R14: 0000561946d6eab0 R15: 0000000000000000
| [   20.518531][  T158] softirqs last disabled at (369076): 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))
| [   20.518533][  T158] Preemption disabled at:
| [   20.518534][  T158] vprintk_emit (kernel/printk/printk.c:2471)
| [   20.518543][  T158] Tainted: [W]=WARN
[   20.518544][  T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.518546][  T158] Call Trace:
[   20.518548][  T158]  <TASK>
[   20.518550][  T158]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   20.518555][  T158]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   20.518557][  T158]  __might_resched.cold (kernel/sched/core.c:9234)
[   20.518562][  T158]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   20.518565][  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)
[   20.518570][  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))
[   20.518572][  T158]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.518578][  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)
[   20.518580][  T158]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.518583][  T158]  put_chars (drivers/char/virtio_console.c:1176)
[   20.518586][  T158]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   20.518588][  T158]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   20.518591][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.518594][  T158]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.518598][  T158]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   20.518601][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.518602][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.518606][  T158]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   20.518609][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.518612][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.518616][  T158]  console_emit_next_record (kernel/printk/printk.c:3183)
[   20.518619][  T158]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   20.518623][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.518626][  T158]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.518629][  T158]  console_flush_one_record (kernel/printk/printk.c:3268)
[   20.518633][  T158]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   20.518635][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.518639][  T158]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   20.518642][  T158]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   20.518643][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.518646][  T158]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   20.518649][  T158]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   20.518650][  T158]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   20.518653][  T158]  vprintk_emit (kernel/printk/printk.c:2479)
[   20.518657][  T158]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   20.518660][  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)
[   20.518665][  T158]  devkmsg_emit.constprop.0 (kernel/printk/printk.c:733)
[   20.518669][  T158]  ? vprintk_emit.cold (kernel/printk/printk.c:2449)
[   20.518673][  T158]  ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439)
[   20.518675][  T158]  ? idr_get_free (??:?)
[   20.518679][  T158]  ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762)
[   20.518681][  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)
[   20.518684][  T158]  devkmsg_write.cold (kernel/printk/printk.c:796)
[   20.518687][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   20.518689][  T158]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.518691][  T158]  ? vfs_lock_file (./include/linux/fs.h:1348)
[   20.518695][  T158]  ? vprintk_default (kernel/printk/printk.c:2494)
[   20.518697][  T158]  new_sync_write (fs/read_write.c:595)
[   20.518702][  T158]  ? new_sync_read (./include/linux/ioprio.h:41)
[   20.518704][  T158]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.518711][  T158]  vfs_write (fs/read_write.c:687)
[   20.518715][  T158]  ksys_write (fs/read_write.c:739)
[   20.518718][  T158]  ? __ia32_sys_read (fs/read_write.c:723)
[   20.518720][  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)
[   20.518722][  T158]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.518726][  T158]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   20.518728][  T158]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   20.518731][  T158]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   20.518734][  T158] RIP: 0033:0x7f237e88054e
[   20.518738][  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
[   20.518739][  T158] RSP: 002b:00007ffe1a859d30 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   20.518742][  T158] RAX: ffffffffffffffda RBX: 00007f237ea01580 RCX: 00007f237e88054e
[   20.518744][  T158] RDX: 0000000000000023 RSI: 0000561946d6eab0 RDI: 0000000000000001
[   20.518745][  T158] RBP: 00007ffe1a859d40 R08: 0000000000000000 R09: 0000000000000000
[   20.518746][  T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023


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