======================================
| [   15.711704][  T245] softirqs last disabled at (24945): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   15.711706][  T245] Preemption disabled at:
| [   15.711707][  T245] vprintk_emit (kernel/printk/printk.c:2471)
| [   15.711716][  T245] Tainted: [W]=WARN
[   15.711716][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.711718][  T245] Call Trace:
[   15.711719][  T245]  <TASK>
[   15.711721][  T245]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.711727][  T245]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   15.711730][  T245]  __might_resched.cold (kernel/sched/core.c:9234)
[   15.711735][  T245]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   15.711739][  T245]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   15.711744][  T245]  __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))
[   15.711746][  T245]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.711752][  T245]  ? 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)
[   15.711755][  T245]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   15.711758][  T245]  put_chars (drivers/char/virtio_console.c:1176)
[   15.711760][  T245]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1934)
[   15.711762][  T245]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   15.711764][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   15.711768][  T245]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   15.711772][  T245]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   15.711774][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.711776][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.711780][  T245]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   15.711782][  T245]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   15.711785][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.711788][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.711792][  T245]  console_emit_next_record (kernel/printk/printk.c:3183)
[   15.711795][  T245]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   15.711797][  T245]  ? 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))
[   15.711800][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.711803][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   15.711806][  T245]  console_flush_one_record (kernel/printk/printk.c:3268)
[   15.711810][  T245]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   15.711812][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   15.711817][  T245]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   15.711820][  T245]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   15.711822][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.711824][  T245]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   15.711828][  T245]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   15.711829][  T245]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   15.711832][  T245]  vprintk_emit (kernel/printk/printk.c:2479)
[   15.711836][  T245]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   15.711842][  T245]  ? gact_cleanup_module (net/sched/act_gact.c:192) act_gact
[   15.711844][  T245]  _printk (kernel/printk/printk.c:2504)
[   15.711848][  T245]  ? snapshot_read.cold (user.c:?)
[   15.711854][  T245]  ? 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)
[   15.711857][  T245] gact_init_module (net/sched/act_gact.c:180) act_gact
[   15.711859][  T245]  do_one_initcall (init/main.c:1357)
[   15.711862][  T245]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   15.711866][  T245]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   15.711869][  T245]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   15.711874][  T245]  do_init_module (kernel/module/main.c:3117)
[   15.711878][  T245]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   15.711882][  T245]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   15.711885][  T245]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   15.711889][  T245]  load_module (kernel/module/main.c:3593)
[   15.711896][  T245]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   15.711900][  T245]  ? __ia32_sys_fsconfig (??:?)
[   15.711902][  T245]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   15.711906][  T245]  ? backing_file_read_iter (fs/backing-file.c:211)
[   15.711909][  T245]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   15.711913][  T245]  init_module_from_file (kernel/module/main.c:3790)
[   15.711916][  T245]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   15.711924][  T245]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   15.711928][  T245]  ? 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)
[   15.711931][  T245]  idempotent_init_module (kernel/module/main.c:3802)
[   15.711934][  T245]  ? init_module_from_file (kernel/module/main.c:3791)
[   15.711940][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   15.711942][  T245]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   15.711948][  T245]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   15.711950][  T245]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   15.711954][  T245]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   15.711955][  T245]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   15.711958][  T245]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.711960][  T245] RIP: 0033:0x7ff386f9637d
[   15.711963][  T245] 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
[   15.711965][  T245] RSP: 002b:00007fffbf874698 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   15.711968][  T245] RAX: ffffffffffffffda RBX: 0000562d9f05a810 RCX: 00007ff386f9637d
[   15.711969][  T245] RDX: 0000000000000000 RSI: 0000562d6a5baffd RDI: 0000000000000000
[   15.711970][  T245] RBP: 00007fffbf874730 R08: 0000000000000000 R09: 0000000000000000
[   15.711971][  T245] R10: 0000000000000000 R11: 0000000000000246 R12: 0000562d6a5baffd


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