======================================
| [   10.820383][  T181] softirqs last disabled at (38913): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.820387][  T181] Preemption disabled at:
| [   10.820387][  T181] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.820400][  T181] Tainted: [W]=WARN
[   10.820401][  T181] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.820404][  T181] Call Trace:
[   10.820406][  T181]  <TASK>
[   10.820409][  T181]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.820416][  T181]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.820419][  T181]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.820426][  T181]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.820431][  T181]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.820438][  T181]  __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))
[   10.820442][  T181]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.820450][  T181]  ? 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)
[   10.820454][  T181]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.820463][  T181]  put_chars (drivers/char/virtio_console.c:1176)
[   10.820467][  T181]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.820469][  T181]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.820476][  T181]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.820480][  T181]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.820488][  T181]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.820492][  T181]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.820500][  T181]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.820505][  T181]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.820514][  T181]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.820520][  T181]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.820523][  T181]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   10.820528][  T181]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.820532][  T181]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.820539][  T181]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.820546][  T181]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.820548][  T181]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.820558][  T181]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.820562][  T181]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.820565][  T181]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.820569][  T181]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.820575][  T181]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.820577][  T181]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.820584][  T181]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.820590][  T181]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.820600][  T181]  ? ppp_cleanup (drivers/net/ppp/ppp_generic.c:1603) ppp_generic
[   10.820607][  T181]  _printk (kernel/printk/printk.c:2504)
[   10.820612][  T181]  ? snapshot_read.cold (user.c:?)
[   10.820623][  T181]  ? do_one_initcall (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/cpumask.h:650 ./include/linux/cpumask.h:1232 ./include/trace/events/initcall.h:27 init/main.c:1356)
[   10.820628][  T181] ppp_init (ppp_generic.mod.c:?) ppp_generic
[   10.820634][  T181]  do_one_initcall (init/main.c:1357)
[   10.820638][  T181]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.820646][  T181]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.820650][  T181]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.820658][  T181]  do_init_module (kernel/module/main.c:3117)
[   10.820664][  T181]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.820669][  T181]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.820675][  T181]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.820682][  T181]  load_module (kernel/module/main.c:3593)
[   10.820693][  T181]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.820702][  T181]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.820707][  T181]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.820713][  T181]  init_module_from_file (kernel/module/main.c:3790)
[   10.820718][  T181]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.820731][  T181]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.820737][  T181]  ? 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)
[   10.820742][  T181]  idempotent_init_module (kernel/module/main.c:3802)
[   10.820748][  T181]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.820759][  T181]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.820763][  T181]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.820773][  T181]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.820776][  T181]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.820782][  T181]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.820785][  T181]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.820789][  T181]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.820794][  T181] RIP: 0033:0x7fea2afaa37d
[   10.820799][  T181] 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
[   10.820802][  T181] RSP: 002b:00007ffc41371888 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.820806][  T181] RAX: ffffffffffffffda RBX: 000055f1a3f0bd20 RCX: 00007fea2afaa37d
[   10.820808][  T181] RDX: 0000000000000000 RSI: 000055f178960ffd RDI: 0000000000000006
[   10.820809][  T181] RBP: 00007ffc41371920 R08: 0000000000000000 R09: 0000000000000000
[   10.820811][  T181] R10: 0000000000000000 R11: 0000000000000246 R12: 000055f178960ffd
[   10.820813][  T181] R13: 000055f1a3f0bcd0 R14: 0000000000040000 R15: 0000000000000000
| [   14.359592][  T199] softirqs last disabled at (18723): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   14.359594][  T199] Preemption disabled at:
| [   14.359595][  T199] vprintk_emit (kernel/printk/printk.c:2471)
| [   14.359604][  T199] Tainted: [W]=WARN
[   14.359605][  T199] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.359607][  T199] Call Trace:
[   14.359609][  T199]  <TASK>
[   14.359610][  T199]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.359616][  T199]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   14.359618][  T199]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.359623][  T199]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.359627][  T199]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.359632][  T199]  __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))
[   14.359634][  T199]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.359640][  T199]  ? 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)
[   14.359642][  T199]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.359645][  T199]  put_chars (drivers/char/virtio_console.c:1176)
[   14.359648][  T199]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.359650][  T199]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.359655][  T199]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.359657][  T199]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.359661][  T199]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.359665][  T199]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.359669][  T199]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.359672][  T199]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.359677][  T199]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.359681][  T199]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.359682][  T199]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   14.359685][  T199]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.359688][  T199]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.359692][  T199]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.359696][  T199]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.359697][  T199]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.359702][  T199]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.359705][  T199]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.359707][  T199]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.359709][  T199]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   14.359713][  T199]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.359715][  T199]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.359718][  T199]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.359721][  T199]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.359727][  T199]  ? bsdcomp_cleanup (drivers/net/ppp/bsd_comp.c:516) bsd_comp
[   14.359730][  T199]  _printk (kernel/printk/printk.c:2504)
[   14.359734][  T199]  ? snapshot_read.cold (user.c:?)
[   14.359738][  T199]  ? bsdcomp_cleanup (drivers/net/ppp/bsd_comp.c:516) bsd_comp
[   14.359740][  T199]  ? 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)
[   14.359742][  T199]  ? bsdcomp_cleanup (drivers/net/ppp/bsd_comp.c:516) bsd_comp
[   14.359744][  T199]  ? 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)
[   14.359747][  T199] bsdcomp_init (drivers/net/ppp/bsd_comp.c:297) bsd_comp
[   14.359749][  T199]  do_one_initcall (init/main.c:1357)
[   14.359753][  T199]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   14.359757][  T199]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   14.359760][  T199]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   14.359764][  T199]  do_init_module (kernel/module/main.c:3117)
[   14.359768][  T199]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   14.359772][  T199]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   14.359775][  T199]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   14.359779][  T199]  load_module (kernel/module/main.c:3593)
[   14.359786][  T199]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   14.359790][  T199]  ? __ia32_sys_fsconfig (??:?)
[   14.359793][  T199]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   14.359797][  T199]  ? backing_file_read_iter (fs/backing-file.c:211)
[   14.359801][  T199]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.359804][  T199]  init_module_from_file (kernel/module/main.c:3790)
[   14.359807][  T199]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   14.359815][  T199]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   14.359819][  T199]  ? 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)
[   14.359822][  T199]  idempotent_init_module (kernel/module/main.c:3802)
[   14.359825][  T199]  ? init_module_from_file (kernel/module/main.c:3791)
[   14.359831][  T199]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.359833][  T199]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   14.359839][  T199]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   14.359841][  T199]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   14.359845][  T199]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.359848][  T199]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.359850][  T199]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.359853][  T199] RIP: 0033:0x7ff6f5fd137d
[   14.359856][  T199] 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
[   14.359858][  T199] RSP: 002b:00007ffcc94b8748 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   14.359860][  T199] RAX: ffffffffffffffda RBX: 000055c77c6ae810 RCX: 00007ff6f5fd137d
[   14.359862][  T199] RDX: 0000000000000000 RSI: 000055c75b772ffd RDI: 0000000000000000
[   14.359863][  T199] RBP: 00007ffcc94b87e0 R08: 0000000000000000 R09: 0000000000000000
[   14.359863][  T199] R10: 0000000000000000 R11: 0000000000000246 R12: 000055c75b772ffd
[   14.359864][  T199] R13: 000055c77c6ae9e0 R14: 0000000000040000 R15: 0000000000000000
| [   18.995187][  T226] softirqs last disabled at (952303): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   18.995189][  T226] Preemption disabled at:
| [   18.995190][  T226] 0x0
| [   18.995201][  T226] Tainted: [W]=WARN
[   18.995202][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.995203][  T226] Call Trace:
[   18.995205][  T226]  <TASK>
[   18.995206][  T226]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.995213][  T226]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.995218][  T226]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.995222][  T226]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   18.995227][  T226]  __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))
[   18.995229][  T226]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.995235][  T226]  ? 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)
[   18.995238][  T226]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.995241][  T226]  put_chars (drivers/char/virtio_console.c:1176)
[   18.995243][  T226]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   18.995245][  T226]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.995248][  T226]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   18.995253][  T226]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   18.995255][  T226]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   18.995259][  T226]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.995262][  T226]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   18.995264][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.995266][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.995270][  T226]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.995272][  T226]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   18.995275][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.995277][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.995281][  T226]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.995285][  T226]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.995287][  T226]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   18.995290][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.995292][  T226]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.995296][  T226]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.995300][  T226]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.995302][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.995307][  T226]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.995310][  T226]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.995312][  T226]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.995314][  T226]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.995318][  T226]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.995319][  T226]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.995323][  T226]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.995326][  T226]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.995330][  T226]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.995333][  T226]  _printk (kernel/printk/printk.c:2504)
[   18.995337][  T226]  ? snapshot_read.cold (user.c:?)
[   18.995339][  T226]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   18.995342][  T226]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   18.995346][  T226]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   18.995348][  T226]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   18.995352][  T226]  ? exit_notify (kernel/exit.c:780)
[   18.995357][  T226]  __x64_sys_exit (kernel/exit.c:1118 kernel/exit.c:1116 kernel/exit.c:1116)
[   18.995359][  T226]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:61)
[   18.995362][  T226]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.995366][  T226]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.995369][  T226]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.995371][  T226] RIP: 0033:0x7f8645e5dc49
[   18.995373][  T226] Code: Unable to access opcode bytes at 0x7f8645e5dc1f.

Code starting with the faulting instruction
===========================================
[   18.995374][  T226] RSP: 002b:00007f864561ce60 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
[   18.995377][  T226] RAX: ffffffffffffffda RBX: 00007f864561d6c0 RCX: 00007f8645e5dc49
[   18.995378][  T226] RDX: 0000000000000000 RSI: 0000000000801000 RDI: 0000000000000000
[   18.995379][  T226] RBP: 00007f864561cf70 R08: 0000000000000001 R09: 00007f864561d6c0
[   18.995380][  T226] R10: 0000000000000008 R11: 0000000000000246 R12: 00007f8644e1d000


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