======================================
| [ 490.467799][ T1633] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
| [  490.467801][ T1633]
| [  490.467802][ T1633]
| [  490.467802][ T1633] stack backtrace:
[  490.467809][ T1633] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  490.467812][ T1633] Call Trace:
[  490.467814][ T1633]  <TASK>
[ 490.467816][ T1633] dump_stack_lvl (lib/dump_stack.c:123) 
[ 490.467822][ T1633] print_bad_irq_dependency (kernel/locking/lockdep.c:2618) 
[ 490.467827][ T1633] check_irq_usage (kernel/locking/lockdep.c:2863) 
[ 490.467830][ T1633] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 490.467834][ T1633] ? __bfs (kernel/locking/lockdep.c:1815 (discriminator 1)) 
[ 490.467837][ T1633] ? add_chain_cache (kernel/locking/lockdep.c:1997) 
[ 490.467841][ T1633] ? check_noncircular (kernel/locking/lockdep.c:2160) 
[ 490.467847][ T1633] ? check_prev_add (kernel/locking/lockdep.c:3169) 
[ 490.467849][ T1633] check_prev_add (kernel/locking/lockdep.c:3169) 
[ 490.467853][ T1633] validate_chain (kernel/locking/lockdep.c:3285 kernel/locking/lockdep.c:3908) 
[ 490.467858][ T1633] __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 490.467862][ T1633] lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) 
[ 490.467865][ T1633] ? virtnet_poll_tx (./include/linux/netdevice.h:4665 drivers/net/virtio_net.c:3255) 
[ 490.467868][ T1633] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 490.467873][ T1633] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 490.467875][ T1633] ? virtnet_poll_tx (./include/linux/netdevice.h:4665 drivers/net/virtio_net.c:3255) 
[ 490.467878][ T1633] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 490.467882][ T1633] ? virtnet_poll_tx (./include/linux/netdevice.h:4665 drivers/net/virtio_net.c:3255) 
[ 490.467884][ T1633] virtnet_poll_tx (./include/linux/netdevice.h:4665 drivers/net/virtio_net.c:3255) 
[ 490.467888][ T1633] poll_napi (net/core/netpoll.c:156 net/core/netpoll.c:170) 
[ 490.467891][ T1633] netpoll_poll_dev (net/core/netpoll.c:202) 
[ 490.467896][ T1633] __netpoll_send_skb (./include/asm-generic/delay.h:62 net/core/netpoll.c:356) 
[ 490.467899][ T1633] ? netpoll_send_udp (./include/linux/skbuff.h:3109 net/core/netpoll.c:490 net/core/netpoll.c:528) 
[ 490.467903][ T1633] netpoll_send_skb (net/core/netpoll.c:410) 
[ 490.467906][ T1633] send_ext_msg_udp (drivers/net/netconsole.c:1498 drivers/net/netconsole.c:1536 drivers/net/netconsole.c:1692) netconsole 
[ 490.467912][ T1633] write_ext_msg (drivers/net/netconsole.c:1710 drivers/net/netconsole.c:1698) netconsole 
[ 490.467918][ T1633] console_emit_next_record (kernel/printk/printk.c:3055 (discriminator 3) kernel/printk/printk.c:3139 (discriminator 3)) 
[ 490.467922][ T1633] ? devkmsg_read (kernel/printk/printk.c:3082) 
[ 490.467926][ T1633] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 490.467931][ T1633] console_flush_all (kernel/printk/printk.c:3227) 
[ 490.467935][ T1633] ? console_emit_next_record (kernel/printk/printk.c:3188) 
[ 490.467941][ T1633] console_unlock (kernel/printk/printk.c:3286 kernel/printk/printk.c:3325) 
[ 490.467944][ T1633] ? console_flush_all (kernel/printk/printk.c:3320) 
[ 490.467947][ T1633] ? lock_acquire (kernel/locking/lockdep.c:5872) 
[ 490.467949][ T1633] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 490.467953][ T1633] ? __down_trylock_console_sem (kernel/printk/printk.c:332) 
[ 490.467956][ T1633] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 490.467961][ T1633] vprintk_emit (kernel/printk/printk.c:2450) 
[ 490.467964][ T1633] ? wake_up_klogd_work_func (kernel/printk/printk.c:2397) 
[ 490.467967][ T1633] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 490.467970][ T1633] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 490.467974][ T1633] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) 
[ 490.467977][ T1633] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 490.467982][ T1633] _printk (kernel/printk/printk.c:2470) 
[ 490.467985][ T1633] ? console_prepend_message (kernel/printk/printk.c:2470) 
[ 490.467988][ T1633] ? __kasan_kmalloc (mm/kasan/common.c:409) 
[ 490.467992][ T1633] ? tracefs_init_fs_context (fs/tracefs/inode.c:526) 
[ 490.468000][ T1633] trace_automount (kernel/trace/trace.c:10204) 
[ 490.468004][ T1633] __traverse_mounts (fs/namei.c:1455 fs/namei.c:1500) 
[ 490.468007][ T1633] ? find_held_lock (kernel/locking/lockdep.c:5343) 
[ 490.468014][ T1633] step_into (fs/namei.c:1633 fs/namei.c:1967) 
[ 490.468017][ T1633] ? __d_lookup (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 fs/dcache.c:2413) 
[ 490.468023][ T1633] ? __d_lookup (fs/dcache.c:2416) 
[ 490.468026][ T1633] ? lookup_fast (fs/namei.c:1964) 
[ 490.468030][ T1633] ? lookup_fast (fs/namei.c:1766) 
[ 490.468036][ T1633] link_path_walk (fs/namei.c:2497) 
[ 490.468040][ T1633] ? walk_component (fs/namei.c:2420) 
[ 490.468046][ T1633] path_openat (fs/namei.c:4042 (discriminator 2)) 
[ 490.468050][ T1633] ? kernel_tmpfile_open (fs/namei.c:4028) 
[ 490.468053][ T1633] ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876) 
[ 490.468058][ T1633] do_filp_open (fs/namei.c:4073) 
[ 490.468062][ T1633] ? path_openat (fs/namei.c:4067) 
[ 490.468068][ T1633] ? find_held_lock (kernel/locking/lockdep.c:5350) 
[ 490.468072][ T1633] ? alloc_fd (fs/file.c:612) 
[ 490.468076][ T1633] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 490.468079][ T1633] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 490.468083][ T1633] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 490.468086][ T1633] ? alloc_fd (fs/file.c:612) 
[ 490.468090][ T1633] do_sys_openat2 (fs/open.c:1435) 
[ 490.468093][ T1633] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 490.468095][ T1633] ? build_open_flags (fs/open.c:1420) 
[ 490.468101][ T1633] __x64_sys_openat (fs/open.c:1461) 
[ 490.468104][ T1633] ? __ia32_sys_open (fs/open.c:1461) 
[ 490.468108][ T1633] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 490.468111][ T1633] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:124 arch/x86/entry/syscall_64.c:90) 
[ 490.468114][ T1633] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 490.468117][ T1633] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  490.468120][ T1633] RIP: 0033:0x7f079169ffeb
[ 490.468124][ T1633] Code: 25 00 00 41 00 3d 00 00 41 00 74 4b 64 8b 04 25 18 00 00 00 85 c0 75 67 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 91 00 00 00 48 8b 54 24 28 64 48 2b 14 25
All code
========
   0:	25 00 00 41 00       	and    $0x410000,%eax
   5:	3d 00 00 41 00       	cmp    $0x410000,%eax
   a:	74 4b                	je     0x57
   c:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  13:	00 
  14:	85 c0                	test   %eax,%eax
  16:	75 67                	jne    0x7f
  18:	44 89 e2             	mov    %r12d,%edx
  1b:	48 89 ee             	mov    %rbp,%rsi
  1e:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  23:	b8 01 01 00 00       	mov    $0x101,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	0f 87 91 00 00 00    	ja     0xc7
  36:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
  3b:	64                   	fs
  3c:	48                   	rex.W
  3d:	2b                   	.byte 0x2b
  3e:	14 25                	adc    $0x25,%al

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	0f 87 91 00 00 00    	ja     0x9d
   c:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
  11:	64                   	fs
  12:	48                   	rex.W
  13:	2b                   	.byte 0x2b
  14:	14 25                	adc    $0x25,%al
[  490.468127][ T1633] RSP: 002b:00007ffd0ccc3840 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[  490.468131][ T1633] RAX: ffffffffffffffda RBX: 000055f1117d8560 RCX: 00007f079169ffeb
[  490.468133][ T1633] RDX: 0000000000000000 RSI: 000055f1117d7780 RDI: 00000000ffffff9c
[  490.468134][ T1633] RBP: 000055f1117d7780 R08: 0000000000000008 R09: 0000000000000001
[  490.468136][ T1633] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000


Finger prints:
print_bad_irq_dependency:check_irq_usage:check_prev_add:validate_chain:__lock_acquire