======================================
| [   13.137528][  T275] softirqs last disabled at (20107): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   13.137531][  T275] Preemption disabled at:
| [   13.137531][  T275] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.137540][  T275] Tainted: [W]=WARN
[   13.137541][  T275] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.137543][  T275] Call Trace:
[   13.137544][  T275]  <TASK>
[   13.137546][  T275]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.137552][  T275]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.137554][  T275]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.137558][  T275]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.137563][  T275]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.137567][  T275]  __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))
[   13.137570][  T275]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.137575][  T275]  ? 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)
[   13.137578][  T275]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.137582][  T275]  put_chars (drivers/char/virtio_console.c:1176)
[   13.137584][  T275]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.137586][  T275]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.137590][  T275]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.137593][  T275]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.137597][  T275]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.137600][  T275]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.137605][  T275]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.137607][  T275]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.137612][  T275]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.137616][  T275]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.137618][  T275]  ? 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))
[   13.137621][  T275]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.137623][  T275]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.137627][  T275]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.137631][  T275]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.137633][  T275]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.137638][  T275]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.137641][  T275]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.137642][  T275]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.137645][  T275]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   13.137648][  T275]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.137650][  T275]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.137653][  T275]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.137657][  T275]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.137663][  T275]  ? vlan_netlink_fini (./include/linux/etherdevice.h:306 net/8021q/vlan.c:316 net/8021q/vlan.c:416) 8021q
[   13.137667][  T275]  _printk (kernel/printk/printk.c:2504)
[   13.137671][  T275]  ? snapshot_read.cold (user.c:?)
[   13.137677][  T275]  ? 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)
[   13.137680][  T275] vlan_proto_init (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) ./include/net/netns/generic.h:45 (discriminator 2)) 8021q
[   13.137683][  T275]  do_one_initcall (init/main.c:1357)
[   13.137686][  T275]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   13.137690][  T275]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   13.137693][  T275]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   13.137698][  T275]  do_init_module (kernel/module/main.c:3117)
[   13.137702][  T275]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   13.137706][  T275]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   13.137709][  T275]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   13.137713][  T275]  load_module (kernel/module/main.c:3593)
[   13.137720][  T275]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   13.137723][  T275]  ? __ia32_sys_fsconfig (??:?)
[   13.137726][  T275]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   13.137731][  T275]  ? backing_file_read_iter (fs/backing-file.c:211)
[   13.137734][  T275]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.137737][  T275]  init_module_from_file (kernel/module/main.c:3790)
[   13.137741][  T275]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   13.137748][  T275]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   13.137752][  T275]  ? 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)
[   13.137755][  T275]  idempotent_init_module (kernel/module/main.c:3802)
[   13.137758][  T275]  ? init_module_from_file (kernel/module/main.c:3791)
[   13.137765][  T275]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.137767][  T275]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   13.137773][  T275]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   13.137775][  T275]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   13.137779][  T275]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.137781][  T275]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.137783][  T275]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.137786][  T275] RIP: 0033:0x7f5e5d3ce37d
[   13.137789][  T275] 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
[   13.137790][  T275] RSP: 002b:00007ffc2af49b68 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   13.137793][  T275] RAX: ffffffffffffffda RBX: 0000557e93ef4810 RCX: 00007f5e5d3ce37d
[   13.137795][  T275] RDX: 0000000000000000 RSI: 0000557e8cb1effd RDI: 0000000000000000
[   13.137795][  T275] RBP: 00007ffc2af49c00 R08: 0000000000000000 R09: 0000000000000000
[   13.137802][  T275] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557e8cb1effd
[   13.137803][  T275] R13: 0000557e93ef4960 R14: 0000000000040000 R15: 0000000000000000
| [   20.243123][  T366] softirqs last disabled at (17449): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   20.243125][  T366] Preemption disabled at:
| [   20.243125][  T366] vprintk_emit (kernel/printk/printk.c:2471)
| [   20.243136][  T366] Tainted: [W]=WARN
[   20.243136][  T366] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.243138][  T366] Call Trace:
[   20.243140][  T366]  <TASK>
[   20.243141][  T366]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   20.243147][  T366]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   20.243150][  T366]  __might_resched.cold (kernel/sched/core.c:9234)
[   20.243154][  T366]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   20.243158][  T366]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   20.243163][  T366]  __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))
[   20.243165][  T366]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.243171][  T366]  ? 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)
[   20.243173][  T366]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   20.243176][  T366]  put_chars (drivers/char/virtio_console.c:1176)
[   20.243178][  T366]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1934)
[   20.243181][  T366]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   20.243184][  T366]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   20.243187][  T366]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   20.243191][  T366]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   20.243194][  T366]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.243195][  T366]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.243200][  T366]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   20.243201][  T366]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   20.243204][  T366]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.243207][  T366]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.243211][  T366]  console_emit_next_record (kernel/printk/printk.c:3183)
[   20.243215][  T366]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   20.243216][  T366]  ? 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))
[   20.243220][  T366]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.243222][  T366]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   20.243226][  T366]  console_flush_one_record (kernel/printk/printk.c:3268)
[   20.243230][  T366]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   20.243232][  T366]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   20.243237][  T366]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   20.243240][  T366]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   20.243241][  T366]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.243244][  T366]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   20.243247][  T366]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   20.243249][  T366]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   20.243252][  T366]  vprintk_emit (kernel/printk/printk.c:2479)
[   20.243257][  T366]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   20.243262][  T366]  ? gre_exit (net/ipv4/gre_demux.c:73) gre
[   20.243266][  T366]  _printk (kernel/printk/printk.c:2504)
[   20.243269][  T366]  ? snapshot_read.cold (user.c:?)
[   20.243276][  T366]  ? 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)
[   20.243279][  T366] gact_init_module (net/sched/act_gact.c:180) act_gact
[   20.243282][  T366]  do_one_initcall (init/main.c:1357)
[   20.243285][  T366]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   20.243289][  T366]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   20.243292][  T366]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   20.243297][  T366]  do_init_module (kernel/module/main.c:3117)
[   20.243301][  T366]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   20.243305][  T366]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   20.243309][  T366]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   20.243313][  T366]  load_module (kernel/module/main.c:3593)
[   20.243320][  T366]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   20.243324][  T366]  ? __ia32_sys_fsconfig (??:?)
[   20.243327][  T366]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   20.243331][  T366]  ? backing_file_read_iter (fs/backing-file.c:211)
[   20.243334][  T366]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   20.243338][  T366]  init_module_from_file (kernel/module/main.c:3790)
[   20.243341][  T366]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   20.243349][  T366]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   20.243352][  T366]  ? 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)
[   20.243355][  T366]  idempotent_init_module (kernel/module/main.c:3802)
[   20.243359][  T366]  ? init_module_from_file (kernel/module/main.c:3791)
[   20.243365][  T366]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   20.243367][  T366]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   20.243373][  T366]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   20.243375][  T366]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   20.243379][  T366]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   20.243380][  T366]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   20.243383][  T366]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   20.243386][  T366] RIP: 0033:0x7f7ec282d37d
[   20.243389][  T366] 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
[   20.243391][  T366] RSP: 002b:00007fff669dc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   20.243394][  T366] RAX: ffffffffffffffda RBX: 000055d45a843810 RCX: 00007f7ec282d37d
[   20.243395][  T366] RDX: 0000000000000000 RSI: 000055d42c273ffd RDI: 0000000000000000
[   20.243396][  T366] RBP: 00007fff669dc0c0 R08: 0000000000000000 R09: 0000000000000000
[   20.243397][  T366] R10: 0000000000000000 R11: 0000000000000246 R12: 000055d42c273ffd
[   20.243398][  T366] R13: 000055d45a843960 R14: 0000000000040000 R15: 0000000000000000
| [   27.831782][  T608] softirqs last disabled at (19093): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   27.831784][  T608] Preemption disabled at:
| [   27.831785][  T608] 0x0
| [   27.831795][  T608] Tainted: [W]=WARN
[   27.831796][  T608] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.831798][  T608] Call Trace:
[   27.831799][  T608]  <TASK>
[   27.831801][  T608]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.831807][  T608]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.831811][  T608]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.831816][  T608]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   27.831821][  T608]  __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))
[   27.831823][  T608]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.831829][  T608]  ? 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)
[   27.831832][  T608]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.831835][  T608]  put_chars (drivers/char/virtio_console.c:1176)
[   27.831838][  T608]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.831839][  T608]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.831844][  T608]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   27.831849][  T608]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.831855][  T608]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.831857][  T608]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.831859][  T608]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.831863][  T608]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.831867][  T608]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.831869][  T608]  ? 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))
[   27.831872][  T608]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.831875][  T608]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.831879][  T608]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.831883][  T608]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.831885][  T608]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.831890][  T608]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.831893][  T608]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.831895][  T608]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.831897][  T608]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   27.831901][  T608]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.831902][  T608]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.831906][  T608]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.831910][  T608]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.831913][  T608]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.831917][  T608]  _printk (kernel/printk/printk.c:2504)
[   27.831921][  T608]  ? snapshot_read.cold (user.c:?)
[   27.831923][  T608]  ? 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)
[   27.831926][  T608]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.831930][  T608]  ? 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)
[   27.831932][  T608]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   27.831936][  T608]  ? exit_notify (kernel/exit.c:780)
[   27.831938][  T608]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.831941][  T608]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.831945][  T608]  do_group_exit (kernel/exit.c:1151)
[   27.831948][  T608]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[   27.831950][  T608]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   27.831952][  T608]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   27.831955][  T608]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   27.831958][  T608]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   27.831961][  T608] RIP: 0033:0x7f94caabd1b8
[   27.831963][  T608] Code: Unable to access opcode bytes at 0x7f94caabd18e.

Code starting with the faulting instruction
===========================================
[   27.831964][  T608] RSP: 002b:00007fff11b07758 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   27.831966][  T608] RAX: ffffffffffffffda RBX: 00007f94cabedf88 RCX: 00007f94caabd1b8
[   27.831968][  T608] RDX: 00007f94ca807fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[   27.831969][  T608] RBP: 00007fff11b077b0 R08: 0000000000000000 R09: 0000000000000050
[   27.831969][  T608] R10: 00007fff11b07570 R11: 0000000000000246 R12: 0000000000000001


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