======================================
| [   10.277886][  T236] softirqs last disabled at (18521): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.277889][  T236] Preemption disabled at:
| [   10.277889][  T236] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.277898][  T236] Tainted: [W]=WARN
[   10.277899][  T236] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.277901][  T236] Call Trace:
[   10.277902][  T236]  <TASK>
[   10.277904][  T236]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.277909][  T236]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.277912][  T236]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.277916][  T236]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.277920][  T236]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.277925][  T236]  __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))
[   10.277928][  T236]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.277933][  T236]  ? 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)
[   10.277936][  T236]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.277939][  T236]  put_chars (drivers/char/virtio_console.c:1176)
[   10.277942][  T236]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.277944][  T236]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.277948][  T236]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.277951][  T236]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.277955][  T236]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.277958][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.277963][  T236]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.277966][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.277971][  T236]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.277975][  T236]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.277977][  T236]  ? 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))
[   10.277980][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.277982][  T236]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.277986][  T236]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.277990][  T236]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.277992][  T236]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.277997][  T236]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.278000][  T236]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.278002][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.278004][  T236]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.278008][  T236]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.278009][  T236]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.278013][  T236]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.278017][  T236]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.278022][  T236]  ? vlan_netlink_fini (./include/linux/etherdevice.h:306 net/8021q/vlan.c:316 net/8021q/vlan.c:416) 8021q
[   10.278026][  T236]  _printk (kernel/printk/printk.c:2504)
[   10.278030][  T236]  ? snapshot_read.cold (user.c:?)
[   10.278036][  T236]  ? 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)
[   10.278039][  T236] 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
[   10.278043][  T236]  do_one_initcall (init/main.c:1357)
[   10.278046][  T236]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.278051][  T236]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.278054][  T236]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.278059][  T236]  do_init_module (kernel/module/main.c:3117)
[   10.278062][  T236]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.278066][  T236]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.278070][  T236]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.278074][  T236]  load_module (kernel/module/main.c:3593)
[   10.278081][  T236]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.278084][  T236]  ? __ia32_sys_fsconfig (??:?)
[   10.278087][  T236]  ? ovl_real_file (fs/overlayfs/file.c:195)
[   10.278091][  T236]  ? backing_file_read_iter (fs/backing-file.c:211)
[   10.278094][  T236]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.278098][  T236]  init_module_from_file (kernel/module/main.c:3790)
[   10.278102][  T236]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.278110][  T236]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.278113][  T236]  ? 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)
[   10.278116][  T236]  idempotent_init_module (kernel/module/main.c:3802)
[   10.278120][  T236]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.278126][  T236]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.278128][  T236]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.278134][  T236]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.278136][  T236]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.278140][  T236]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.278142][  T236]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.278145][  T236]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.278147][  T236] RIP: 0033:0x7f577123237d
[   10.278150][  T236] 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
[   10.278152][  T236] RSP: 002b:00007fffc40901e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.278155][  T236] RAX: ffffffffffffffda RBX: 000055d458d23810 RCX: 00007f577123237d
[   10.278156][  T236] RDX: 0000000000000000 RSI: 000055d43b12cffd RDI: 0000000000000000
[   10.278157][  T236] RBP: 00007fffc4090280 R08: 0000000000000000 R09: 0000000000000000
[   10.278158][  T236] R10: 0000000000000000 R11: 0000000000000246 R12: 000055d43b12cffd
[   10.278159][  T236] R13: 000055d458d23960 R14: 0000000000040000 R15: 0000000000000000
| [   11.397693][  T306] softirqs last disabled at (14711): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   11.397695][  T306] Preemption disabled at:
| [   11.397696][  T306] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.397705][  T306] Tainted: [W]=WARN
[   11.397706][  T306] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.397707][  T306] Call Trace:
[   11.397709][  T306]  <TASK>
[   11.397711][  T306]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.397716][  T306]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.397718][  T306]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.397723][  T306]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.397727][  T306]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.397733][  T306]  __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))
[   11.397735][  T306]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.397741][  T306]  ? 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)
[   11.397743][  T306]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.397747][  T306]  put_chars (drivers/char/virtio_console.c:1176)
[   11.397748][  T306]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1934)
[   11.397750][  T306]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.397753][  T306]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.397757][  T306]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.397761][  T306]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.397764][  T306]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.397766][  T306]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.397770][  T306]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.397772][  T306]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   11.397775][  T306]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397778][  T306]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.397782][  T306]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.397785][  T306]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.397787][  T306]  ? 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))
[   11.397790][  T306]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397793][  T306]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.397797][  T306]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.397801][  T306]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.397803][  T306]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.397808][  T306]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.397810][  T306]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.397812][  T306]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397815][  T306]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   11.397818][  T306]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.397820][  T306]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.397823][  T306]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.397827][  T306]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.397833][  T306]  ? gact_cleanup_module (net/sched/act_gact.c:192) act_gact
[   11.397835][  T306]  _printk (kernel/printk/printk.c:2504)
[   11.397839][  T306]  ? snapshot_read.cold (user.c:?)
[   11.397845][  T306]  ? 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)
[   11.397848][  T306] gact_init_module (net/sched/act_gact.c:180) act_gact
[   11.397850][  T306]  do_one_initcall (init/main.c:1357)
[   11.397853][  T306]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   11.397858][  T306]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   11.397861][  T306]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   11.397867][  T306]  do_init_module (kernel/module/main.c:3117)
[   11.397872][  T306]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   11.397876][  T306]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   11.397879][  T306]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   11.397884][  T306]  load_module (kernel/module/main.c:3593)
[   11.397891][  T306]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   11.397895][  T306]  ? __ia32_sys_fsconfig (??:?)
[   11.397898][  T306]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.397901][  T306]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.397905][  T306]  init_module_from_file (kernel/module/main.c:3790)
[   11.397908][  T306]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   11.397916][  T306]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   11.397920][  T306]  ? 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)
[   11.397923][  T306]  idempotent_init_module (kernel/module/main.c:3802)
[   11.397926][  T306]  ? init_module_from_file (kernel/module/main.c:3791)
[   11.397932][  T306]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397935][  T306]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   11.397941][  T306]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   11.397943][  T306]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   11.397946][  T306]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.397948][  T306]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.397951][  T306]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.397953][  T306] RIP: 0033:0x7f47a0d3837d
[   11.397956][  T306] 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
[   11.397958][  T306] RSP: 002b:00007ffcddca3368 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   11.397961][  T306] RAX: ffffffffffffffda RBX: 000055f19f320810 RCX: 00007f47a0d3837d
[   11.397962][  T306] RDX: 0000000000000000 RSI: 000055f16e9aaffd RDI: 0000000000000000
[   11.397963][  T306] RBP: 00007ffcddca3400 R08: 0000000000000000 R09: 0000000000000000
[   11.397964][  T306] R10: 0000000000000000 R11: 0000000000000246 R12: 000055f16e9aaffd
[   11.397965][  T306] R13: 000055f19f320960 R14: 0000000000040000 R15: 0000000000000000
| [   12.544757][  T407] softirqs last disabled at (13824): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   12.544760][  T407] Preemption disabled at:
| [   12.544761][  T407] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.544770][  T407] Tainted: [W]=WARN
[   12.544771][  T407] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.544772][  T407] Call Trace:
[   12.544774][  T407]  <TASK>
[   12.544776][  T407]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.544782][  T407]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.544784][  T407]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.544788][  T407]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.544793][  T407]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.544798][  T407]  __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))
[   12.544800][  T407]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.544806][  T407]  ? 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)
[   12.544809][  T407]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.544812][  T407]  put_chars (drivers/char/virtio_console.c:1176)
[   12.544814][  T407]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   12.544816][  T407]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.544819][  T407]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.544824][  T407]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.544826][  T407]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.544830][  T407]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.544833][  T407]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   12.544835][  T407]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.544836][  T407]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.544840][  T407]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.544842][  T407]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   12.544846][  T407]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.544848][  T407]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.544852][  T407]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.544856][  T407]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.544858][  T407]  ? 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))
[   12.544861][  T407]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.544863][  T407]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.544870][  T407]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.544874][  T407]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.544876][  T407]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.544882][  T407]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.544885][  T407]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.544886][  T407]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.544889][  T407]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.544893][  T407]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.544894][  T407]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.544898][  T407]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.544902][  T407]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.544905][  T407]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.544910][  T407]  _printk (kernel/printk/printk.c:2504)
[   12.544913][  T407]  ? snapshot_read.cold (user.c:?)
[   12.544917][  T407]  ? br_multicast_flood (??:?) bridge
[   12.544930][  T407]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.544932][  T407]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.544933][  T407]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.544937][  T407] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   12.544948][  T407] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   12.544956][  T407] new_nbp (net/bridge/br_if.c:449) bridge
[   12.544965][  T407] br_add_if (net/bridge/br_if.c:592) bridge
[   12.544972][  T407]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   12.544977][  T407]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.544980][  T407]  ? __kernel_text_address (kernel/extable.c:79)
[   12.544984][  T407]  do_set_master (net/core/rtnetlink.c:3071)
[   12.544989][  T407]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.544992][  T407]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.544995][  T407]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.544996][  T407]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.544998][  T407]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.545002][  T407]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.545004][  T407]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.545006][  T407]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.545008][  T407]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.545011][  T407]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.545013][  T407]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.545016][  T407]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.545018][  T407]  ? netlink_seq_next (net/netlink/af_netlink.c:2684)
[   12.545021][  T407]  ? ___sys_sendmsg (net/socket.c:2757)
[   12.545025][  T407]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.545027][  T407]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.545030][  T407]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.545032][  T407]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.545034][  T407]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.545035][  T407]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.545038][  T407]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.545042][  T407]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   12.545045][  T407]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.545047][  T407]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.545051][  T407]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.545052][  T407]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.545057][  T407]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.545062][  T407]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.545068][  T407]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.545070][  T407]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.545074][  T407]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.545076][  T407]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.545078][  T407]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.545080][  T407]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.545084][  T407]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.545086][  T407]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.545089][  T407]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.545091][  T407]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.545095][  T407]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.545097][  T407]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.545100][  T407]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.545102][  T407]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.545105][  T407]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.545111][  T407]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   12.545113][  T407]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   12.545117][  T407]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.545121][  T407]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.545123][  T407]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.545128][  T407]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.545131][  T407]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.545135][  T407]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   12.545141][  T407]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   12.545143][  T407]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.545145][  T407]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   12.545147][  T407]  ? move_addr_to_kernel (net/socket.c:258)
[   12.545154][  T407]  ___sys_sendmsg (net/socket.c:2767)
[   12.545157][  T407]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.545173][  T407]  __sys_sendmsg (net/socket.c:2799)
[   12.545176][  T407]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.545182][  T407]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.545186][  T407]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.545188][  T407]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.545191][  T407]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.545194][  T407] RIP: 0033:0x7f3aa337454e
[   12.545197][  T407] 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
[   12.545198][  T407] RSP: 002b:00007ffc69e59fc0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.545201][  T407] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f3aa337454e
[   12.545203][  T407] RDX: 0000000000000000 RSI: 00007ffc69e5a070 RDI: 0000000000000005
[   12.545204][  T407] RBP: 00007ffc69e59fd0 R08: 0000000000000000 R09: 0000000000000000
[   12.545204][  T407] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a917f36
[   12.545205][  T407] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc69e5a730
| [   28.038963][    C0] softirqs last disabled at (1519107): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   28.038965][    C0] Preemption disabled at:
| [   28.038965][    C0] schedule_preempt_disabled (kernel/sched/core.c:7420)
| [   28.038975][    C0] Tainted: [W]=WARN
[   28.038975][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.038977][    C0] Call Trace:
[   28.038979][    C0]  <IRQ>
[   28.038980][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.038986][    C0]  ? schedule_preempt_disabled (kernel/sched/core.c:7420)
[   28.038987][    C0]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.038991][    C0]  ? validate_chain (kernel/locking/lockdep.c:157 kernel/locking/lockdep.c:202 kernel/locking/lockdep.c:3329 kernel/locking/lockdep.c:3924)
[   28.038994][    C0]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.038997][    C0]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   28.039000][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039004][    C0]  __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))
[   28.039007][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.039008][    C0]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.039012][    C0]  ? 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)
[   28.039014][    C0]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.039016][    C0]  put_chars (drivers/char/virtio_console.c:1176)
[   28.039018][    C0]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.039020][    C0]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   28.039023][    C0]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.039027][    C0]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.039028][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039030][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.039032][    C0]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.039035][    C0]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.039037][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039039][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039041][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.039043][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   28.039044][    C0]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.039047][    C0]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.039050][    C0]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.039051][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.039053][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.039055][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039056][    C0]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.039058][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   28.039060][    C0]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.039062][    C0]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.039064][    C0]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.039066][    C0]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.039068][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039070][    C0]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.039071][    C0]  ? x86_64_start_kernel (arch/x86/kernel/head64.c:264)
[   28.039076][    C0]  _printk (kernel/printk/printk.c:2504)
[   28.039079][    C0]  ? snapshot_read.cold (user.c:?)
[   28.039081][    C0]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   28.039085][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.039088][    C0]  ? nbcon_cpu_emergency_enter (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:435 kernel/printk/nbcon.c:1723)
[   28.039089][    C0]  print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4097 (discriminator 1))
[   28.039092][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   28.039095][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   28.039097][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   28.039099][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   28.039101][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.039103][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.039115][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039117][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.039119][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.039126][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   28.039128][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.039134][    C0] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.039141][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.039147][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   28.039150][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   28.039152][    C0]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   28.039156][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   28.039158][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.039159][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039162][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   28.039164][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.039171][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   28.039173][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.039175][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.039178][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   28.039180][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   28.039182][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.039184][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039186][    C0]  handle_softirqs (kernel/softirq.c:645)
[   28.039188][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.039190][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   28.039192][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   28.039193][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   28.039195][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   28.039198][    C0]  </IRQ>
[   28.039198][    C0]  <TASK>
[   28.039199][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   28.039201][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   28.039203][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   28.039206][    C0] Code: 48 8b 3d 94 d2 f5 01 e8 1f 00 00 00 48 2b 05 58 93 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 86 11 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 94 d2 f5 01 	mov    0x1f5d294(%rip),%rdi        # 0x1f5d29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 93 95 00 	sub    0x959358(%rip),%rax        # 0x95936b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 13 86 11 00 	verw   0x118613(%rip)        # 0x11863b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   28.039208][    C0] RSP: 0018:ffffffffa9e07cf8 EFLAGS: 00000296
[   28.039211][    C0] RAX: 0000000000172e01 RBX: ffffffffa9e1c600 RCX: ffffffffa6ef0307
[   28.039213][    C0] RDX: ffffffffa9e1c600 RSI: ffffffffa9c38af6 RDI: ffffffffa968d8e0
[   28.039214][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   28.039215][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff53c0fa2
[   28.039215][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   28.039217][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.039220][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   28.039222][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   28.039224][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   28.039226][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.039227][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   28.039229][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   28.039231][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.039233][    C0]  do_idle (kernel/sched/idle.c:355)
[   28.039235][    C0]  cpu_startup_entry (kernel/sched/idle.c:454)
[   28.039237][    C0]  rest_init (init/main.c:727)
[   28.039239][    C0]  ? __cpuidle_text_end (??:?)
[   28.039242][    C0]  ? rest_init (init/main.c:727)
[   28.039244][    C0]  ? acpi_hw_set_mode (drivers/acpi/acpica/hwacpi.c:72 (discriminator 1))
[   28.039248][    C0]  ? cpus_read_unlock (./include/linux/percpu-rwsem.h:125 (discriminator 1) kernel/cpu.c:502 (discriminator 1))
[   28.039250][    C0]  ? acpi_enable (drivers/acpi/acpica/evxfevnt.c:47)
[   28.039253][    C0]  start_kernel (init/main.c:1185)
[   28.039255][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   28.039257][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   28.039259][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   28.106156][    C0]
| [   28.106230][    C0]
| [   28.106230][    C0] stack backtrace:
| [   28.106434][    C0] Tainted: [W]=WARN
[   28.106435][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.106436][    C0] Call Trace:
[   28.106438][    C0]  <IRQ>
[   28.106439][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.106444][    C0]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   28.106446][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   28.106450][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   28.106451][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   28.106453][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   28.106456][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.106457][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.106464][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.106468][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.106469][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.106476][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   28.106478][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.106484][    C0] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   28.106492][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.106498][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   28.106500][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   28.106502][    C0]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   28.106505][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   28.106507][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.106508][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.106511][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   28.106513][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   28.106519][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   28.106521][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.106524][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.106527][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   28.106529][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   28.106531][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.106532][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.106534][    C0]  handle_softirqs (kernel/softirq.c:645)
[   28.106536][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.106538][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   28.106540][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   28.106542][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   28.106543][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   28.106545][    C0]  </IRQ>
[   28.106546][    C0]  <TASK>
[   28.106546][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   28.106548][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   28.106553][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   28.106555][    C0] Code: 48 8b 3d 94 d2 f5 01 e8 1f 00 00 00 48 2b 05 58 93 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 86 11 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 94 d2 f5 01 	mov    0x1f5d294(%rip),%rdi        # 0x1f5d29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 93 95 00 	sub    0x959358(%rip),%rax        # 0x95936b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 13 86 11 00 	verw   0x118613(%rip)        # 0x11863b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   28.106557][    C0] RSP: 0018:ffffffffa9e07cf8 EFLAGS: 00000296
[   28.106559][    C0] RAX: 0000000000172e01 RBX: ffffffffa9e1c600 RCX: ffffffffa6ef0307
[   28.106560][    C0] RDX: ffffffffa9e1c600 RSI: ffffffffa9c38af6 RDI: ffffffffa968d8e0
[   28.106561][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   28.106562][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff53c0fa2
[   28.106562][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   28.106564][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.106566][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   28.106568][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   28.106570][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   28.106571][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.106573][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   28.106575][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   28.106577][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.106579][    C0]  do_idle (kernel/sched/idle.c:355)
[   28.106581][    C0]  cpu_startup_entry (kernel/sched/idle.c:454)
[   28.106582][    C0]  rest_init (init/main.c:727)
[   28.106584][    C0]  ? __cpuidle_text_end (??:?)
[   28.106587][    C0]  ? rest_init (init/main.c:727)
[   28.106589][    C0]  ? acpi_hw_set_mode (drivers/acpi/acpica/hwacpi.c:72 (discriminator 1))
[   28.106593][    C0]  ? cpus_read_unlock (./include/linux/percpu-rwsem.h:125 (discriminator 1) kernel/cpu.c:502 (discriminator 1))
[   28.106595][    C0]  ? acpi_enable (drivers/acpi/acpica/evxfevnt.c:47)
[   28.106597][    C0]  start_kernel (init/main.c:1185)
[   28.106599][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   28.106601][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   28.106603][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   86.034683][  T776] softirqs last disabled at (0): 0x0
| [   86.034685][  T776] Preemption disabled at:
| [   86.034686][  T776] 0x0
| [   86.034695][  T776] Tainted: [W]=WARN
[   86.034696][  T776] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   86.034698][  T776] Call Trace:
[   86.034700][  T776]  <TASK>
[   86.034701][  T776]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   86.034715][  T776]  __might_resched.cold (kernel/sched/core.c:9234)
[   86.034719][  T776]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   86.034723][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034727][  T776]  __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))
[   86.034731][  T776]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   86.034734][  T776]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   86.034738][  T776]  ? 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)
[   86.034739][  T776]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   86.034742][  T776]  put_chars (drivers/char/virtio_console.c:1176)
[   86.034744][  T776]  ? desc_read_finalized_seq (kernel/printk/printk_ringbuffer.c:1934)
[   86.034746][  T776]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   86.034748][  T776]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   86.034751][  T776]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   86.034754][  T776]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   86.034755][  T776]  ? 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)
[   86.034757][  T776]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   86.034759][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034761][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034762][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   86.034765][  T776]  console_emit_next_record (kernel/printk/printk.c:3183)
[   86.034768][  T776]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   86.034770][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034771][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034773][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034775][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   86.034777][  T776]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   86.034779][  T776]  console_flush_one_record (kernel/printk/printk.c:3268)
[   86.034781][  T776]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   86.034784][  T776]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   86.034786][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   86.034787][  T776]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   86.034789][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034791][  T776]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   86.034792][  T776]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   86.034794][  T776]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   86.034796][  T776]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   86.034798][  T776]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   86.034800][  T776]  vprintk_emit (kernel/printk/printk.c:2479)
[   86.034805][  T776]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   86.034807][  T776]  ? debug_object_assert_init (lib/debugobjects.c:1072 (discriminator 3))
[   86.034811][  T776]  ? debug_object_activate (lib/debugobjects.c:884)
[   86.034813][  T776]  _printk (kernel/printk/printk.c:2504)
[   86.034816][  T776]  ? snapshot_read.cold (user.c:?)
[   86.034818][  T776]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   86.034820][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034822][  T776]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   86.034825][  T776] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   86.034839][  T776] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   86.034848][  T776] br_stp_disable_bridge (net/bridge/br_stp_if.c:76) bridge
[   86.034855][  T776] br_dev_stop (net/bridge/br_device.c:193) bridge
[   86.034863][  T776]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   86.034870][  T776]  __dev_close_many (net/core/dev.c:1798)
[   86.034873][  T776]  ? netif_open (net/core/dev.c:1755)
[   86.034875][  T776]  ? trace_irq_enable.constprop.0 (./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/preemptirq.h:40)
[   86.034877][  T776]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   86.034879][  T776]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   86.034882][  T776]  ? __kernel_text_address (kernel/extable.c:79)
[   86.034884][  T776]  ? write_profile (profile.c:?)
[   86.034887][  T776]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   86.034890][  T776]  netif_change_flags (net/core/dev.c:9877)
[   86.034892][  T776]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   86.034895][  T776]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   86.034896][  T776]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   86.034897][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034899][  T776]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   86.034903][  T776]  ? kasan_save_stack (mm/kasan/common.c:58)
[   86.034906][  T776]  ? kasan_save_stack (mm/kasan/common.c:57)
[   86.034907][  T776]  ? kasan_save_track (mm/kasan/common.c:78)
[   86.034909][  T776]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   86.034910][  T776]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   86.034912][  T776]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   86.034913][  T776]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   86.034914][  T776]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   86.034917][  T776]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   86.034918][  T776]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   86.034920][  T776]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   86.034922][  T776]  ? ___sys_sendmsg (net/socket.c:2767)
[   86.034924][  T776]  ? __sys_sendmsg (net/socket.c:2799)
[   86.034926][  T776]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   86.034928][  T776]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   86.034931][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034933][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   86.034934][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034936][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034938][  T776]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   86.034941][  T776]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   86.034943][  T776]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   86.034945][  T776]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   86.034947][  T776]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   86.034949][  T776]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   86.034951][  T776]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   86.034953][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034955][  T776]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   86.034956][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   86.034958][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034960][  T776]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   86.034963][  T776]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   86.034965][  T776]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   86.034967][  T776]  ? __kernel_text_address (kernel/extable.c:79)
[   86.034968][  T776]  ? write_profile (profile.c:?)
[   86.034969][  T776]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   86.034971][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034972][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034974][  T776]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   86.034978][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   86.034979][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.034981][  T776]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   86.034983][  T776]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   86.034984][  T776]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   86.034986][  T776]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   86.034987][  T776]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   86.034990][  T776]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   86.034992][  T776]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   86.034993][  T776]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   86.034995][  T776]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   86.034996][  T776]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   86.034999][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.035001][  T776]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   86.035003][  T776]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   86.035005][  T776]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   86.035007][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.035008][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.035010][  T776]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   86.035012][  T776]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   86.035014][  T776]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   86.035016][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.035018][  T776]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   86.035020][  T776]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   86.035021][  T776]  ? copy_msghdr_from_user (net/socket.c:2650)
[   86.035023][  T776]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   86.035025][  T776]  ? move_addr_to_kernel (net/socket.c:258)
[   86.035026][  T776]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   86.035029][  T776]  ___sys_sendmsg (net/socket.c:2767)
[   86.035031][  T776]  ? copy_msghdr_from_user (net/socket.c:2619)
[   86.035036][  T776]  __sys_sendmsg (net/socket.c:2799)
[   86.035038][  T776]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   86.035041][  T776]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   86.035043][  T776]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   86.035044][  T776]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   86.035047][  T776]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   86.035048][  T776] RIP: 0033:0x7f7dcd11854e
[   86.035050][  T776] 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
[   86.035052][  T776] RSP: 002b:00007ffc20b84db0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   86.035056][  T776] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7dcd11854e
[   86.035058][  T776] RDX: 0000000000000000 RSI: 00007ffc20b84e60 RDI: 0000000000000005
[   86.035059][  T776] RBP: 00007ffc20b84dc0 R08: 0000000000000000 R09: 0000000000000000
[   86.035059][  T776] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a917f80


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__irq_exit_rcu:schedule_preempt_disabled:dump_stack_lvl:__kmalloc_noprof:put_chars
__kmalloc_noprof:put_chars:hvc_console_print:console_emit_next_record:console_flush_one_record
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars