======================================
| [    9.857225][  T187] softirqs last disabled at (36729): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.857227][  T187] Preemption disabled at:
| [    9.857228][  T187] 0x0
| [    9.857239][  T187] Tainted: [W]=WARN
[    9.857240][  T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.857242][  T187] Call Trace:
[    9.857244][  T187]  <TASK>
[    9.857245][  T187]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.857252][  T187]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.857256][  T187]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.857261][  T187]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.857266][  T187]  __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))
[    9.857268][  T187]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.857274][  T187]  ? 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)
[    9.857277][  T187]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.857280][  T187]  put_chars (drivers/char/virtio_console.c:1176)
[    9.857283][  T187]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.857284][  T187]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.857289][  T187]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.857294][  T187]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.857300][  T187]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.857302][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.857304][  T187]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.857308][  T187]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.857312][  T187]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.857314][  T187]  ? 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))
[    9.857317][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.857319][  T187]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.857323][  T187]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.857327][  T187]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.857329][  T187]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.857334][  T187]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.857337][  T187]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.857339][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.857341][  T187]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[    9.857344][  T187]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.857346][  T187]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.857349][  T187]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.857353][  T187]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.857357][  T187]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.857360][  T187]  _printk (kernel/printk/printk.c:2504)
[    9.857364][  T187]  ? snapshot_read.cold (user.c:?)
[    9.857367][  T187]  ? 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)
[    9.857369][  T187]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.857373][  T187]  ? 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)
[    9.857376][  T187]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[    9.857379][  T187]  ? exit_notify (kernel/exit.c:780)
[    9.857381][  T187]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.857384][  T187]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.857388][  T187]  do_group_exit (kernel/exit.c:1151)
[    9.857390][  T187]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[    9.857392][  T187]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[    9.857394][  T187]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.857397][  T187]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.857401][  T187]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.857403][  T187] RIP: 0033:0x7f7f204611b8
[    9.857405][  T187] Code: Unable to access opcode bytes at 0x7f7f2046118e.

Code starting with the faulting instruction
===========================================
[    9.857406][  T187] RSP: 002b:00007ffef9ffe108 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    9.857409][  T187] RAX: ffffffffffffffda RBX: 00007f7f20591f88 RCX: 00007f7f204611b8
[    9.857410][  T187] RDX: 00007f7f201abfc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[    9.857411][  T187] RBP: 00007ffef9ffe160 R08: 0000000000000000 R09: 0000000000008010
[    9.857412][  T187] R10: 00007ffef9ffdf20 R11: 0000000000000246 R12: 0000000000000001
[    9.857413][  T187] R13: 0000000000000000 R14: 00007f7f20590680 R15: 00007f7f20591fa0
| [   15.938159][  T248] softirqs last disabled at (22215): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   15.938161][  T248] Preemption disabled at:
| [   15.938162][  T248] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.938171][  T248] Tainted: [W]=WARN
[   15.938172][  T248] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.938174][  T248] Call Trace:
[   15.938176][  T248]  <TASK>
[   15.938177][  T248]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.938182][  T248]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.938185][  T248]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.938189][  T248]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.938193][  T248]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.938198][  T248]  __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))
[   15.938200][  T248]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.938206][  T248]  ? 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)
[   15.938209][  T248]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.938212][  T248]  put_chars (drivers/char/virtio_console.c:1176)
[   15.938214][  T248]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1934)
[   15.938216][  T248]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.938219][  T248]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.938222][  T248]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.938226][  T248]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.938229][  T248]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.938230][  T248]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.938235][  T248]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.938236][  T248]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   15.938239][  T248]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.938242][  T248]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.938246][  T248]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.938249][  T248]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.938251][  T248]  ? 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))
[   15.938254][  T248]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.938256][  T248]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.938260][  T248]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.938264][  T248]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.938266][  T248]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.938271][  T248]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.938273][  T248]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.938275][  T248]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.938277][  T248]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.938281][  T248]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.938282][  T248]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.938286][  T248]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.938289][  T248]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.938295][  T248]  ? gact_cleanup_module (net/sched/act_gact.c:192) act_gact
[   15.938298][  T248]  _printk (kernel/printk/printk.c:2504)
[   15.938301][  T248]  ? snapshot_read.cold (user.c:?)
[   15.938307][  T248]  ? 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)
[   15.938310][  T248] gact_init_module (net/sched/act_gact.c:180) act_gact
[   15.938312][  T248]  do_one_initcall (init/main.c:1357)
[   15.938315][  T248]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   15.938320][  T248]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   15.938323][  T248]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   15.938327][  T248]  do_init_module (kernel/module/main.c:3117)
[   15.938331][  T248]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   15.938335][  T248]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   15.938338][  T248]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   15.938342][  T248]  load_module (kernel/module/main.c:3593)
[   15.938349][  T248]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   15.938352][  T248]  ? __ia32_sys_fsconfig (??:?)
[   15.938356][  T248]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   15.938358][  T248]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.938362][  T248]  init_module_from_file (kernel/module/main.c:3790)
[   15.938365][  T248]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   15.938373][  T248]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   15.938376][  T248]  ? 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)
[   15.938379][  T248]  idempotent_init_module (kernel/module/main.c:3802)
[   15.938382][  T248]  ? init_module_from_file (kernel/module/main.c:3791)
[   15.938389][  T248]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.938391][  T248]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   15.938397][  T248]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   15.938399][  T248]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   15.938403][  T248]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.938405][  T248]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.938407][  T248]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.938409][  T248] RIP: 0033:0x7f51908f937d
[   15.938413][  T248] 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
[   15.938414][  T248] RSP: 002b:00007ffc3bef9538 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   15.938417][  T248] RAX: ffffffffffffffda RBX: 0000556093e86810 RCX: 00007f51908f937d
[   15.938418][  T248] RDX: 0000000000000000 RSI: 00005560865daffd RDI: 0000000000000000
[   15.938419][  T248] RBP: 00007ffc3bef95d0 R08: 0000000000000000 R09: 0000000000000000
[   15.938420][  T248] R10: 0000000000000000 R11: 0000000000000246 R12: 00005560865daffd


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