======================================
| [ 611.493157][ T3143] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
| [  611.493159][ T3143]
| [  611.493160][ T3143]
| [  611.493160][ T3143] stack backtrace:
[  611.493168][ T3143] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  611.493170][ T3143] Call Trace:
[  611.493172][ T3143]  <TASK>
[ 611.493173][ T3143] dump_stack_lvl (lib/dump_stack.c:123) 
[ 611.493178][ T3143] print_bad_irq_dependency (kernel/locking/lockdep.c:2618) 
[ 611.493183][ T3143] check_irq_usage (kernel/locking/lockdep.c:2863) 
[ 611.493186][ T3143] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 611.493189][ T3143] ? __bfs (kernel/locking/lockdep.c:1815 (discriminator 1)) 
[ 611.493191][ T3143] ? add_chain_cache (kernel/locking/lockdep.c:1997) 
[ 611.493196][ T3143] ? check_noncircular (kernel/locking/lockdep.c:2160) 
[ 611.493201][ T3143] ? check_prev_add (kernel/locking/lockdep.c:3169) 
[ 611.493203][ T3143] check_prev_add (kernel/locking/lockdep.c:3169) 
[ 611.493207][ T3143] validate_chain (kernel/locking/lockdep.c:3285 kernel/locking/lockdep.c:3908) 
[ 611.493211][ T3143] __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 611.493216][ T3143] lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) 
[ 611.493218][ T3143] ? virtnet_poll_tx (./include/linux/netdevice.h:4661 drivers/net/virtio_net.c:3255) 
[ 611.493221][ T3143] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 611.493226][ T3143] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 611.493228][ T3143] ? virtnet_poll_tx (./include/linux/netdevice.h:4661 drivers/net/virtio_net.c:3255) 
[ 611.493232][ T3143] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 611.493235][ T3143] ? virtnet_poll_tx (./include/linux/netdevice.h:4661 drivers/net/virtio_net.c:3255) 
[ 611.493237][ T3143] virtnet_poll_tx (./include/linux/netdevice.h:4661 drivers/net/virtio_net.c:3255) 
[ 611.493240][ T3143] poll_napi (net/core/netpoll.c:156 net/core/netpoll.c:170) 
[ 611.493244][ T3143] netpoll_poll_dev (net/core/netpoll.c:202) 
[ 611.493248][ T3143] __netpoll_send_skb (./include/asm-generic/delay.h:62 net/core/netpoll.c:356) 
[ 611.493252][ T3143] ? netpoll_send_udp (./include/linux/skbuff.h:3150 net/core/netpoll.c:490 net/core/netpoll.c:528) 
[ 611.493256][ T3143] netpoll_send_skb (net/core/netpoll.c:410) 
[ 611.493259][ T3143] send_ext_msg_udp (drivers/net/netconsole.c:1498 drivers/net/netconsole.c:1536 drivers/net/netconsole.c:1692) netconsole 
[ 611.493265][ T3143] write_ext_msg (drivers/net/netconsole.c:1710 drivers/net/netconsole.c:1698) netconsole 
[ 611.493270][ T3143] console_emit_next_record (kernel/printk/printk.c:3055 (discriminator 3) kernel/printk/printk.c:3139 (discriminator 3)) 
[ 611.493274][ T3143] ? devkmsg_read (kernel/printk/printk.c:3082) 
[ 611.493278][ T3143] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 611.493284][ T3143] console_flush_all (kernel/printk/printk.c:3227) 
[ 611.493288][ T3143] ? console_emit_next_record (kernel/printk/printk.c:3188) 
[ 611.493294][ T3143] console_unlock (kernel/printk/printk.c:3286 kernel/printk/printk.c:3325) 
[ 611.493298][ T3143] ? console_flush_all (kernel/printk/printk.c:3320) 
[ 611.493301][ T3143] ? lock_acquire (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:646 ./include/linux/cpumask.h:1205 ./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 611.493303][ T3143] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 611.493307][ T3143] ? __down_trylock_console_sem (kernel/printk/printk.c:332) 
[ 611.493310][ T3143] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 611.493315][ T3143] vprintk_emit (kernel/printk/printk.c:2450) 
[ 611.493321][ T3143] ? wake_up_klogd_work_func (kernel/printk/printk.c:2397) 
[ 611.493326][ T3143] ? _copy_from_iter (./arch/x86/include/asm/uaccess_64.h:126 ./arch/x86/include/asm/uaccess_64.h:141 lib/iov_iter.c:55 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:300 ./include/linux/iov_iter.h:328 lib/iov_iter.c:249 lib/iov_iter.c:260) 
[ 611.493332][ T3143] ? __create_object (mm/kmemleak.c:774) 
[ 611.493336][ T3143] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 611.493341][ T3143] devkmsg_emit.constprop.0 (kernel/printk/printk.c:749) 
[ 611.493345][ T3143] ? vprintk_default (kernel/printk/printk.c:749) 
[ 611.493349][ T3143] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 611.493353][ T3143] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 21)) 
[ 611.493356][ T3143] ? __kmalloc_noprof (mm/slub.c:4378) 
[ 611.493361][ T3143] devkmsg_write (kernel/printk/printk.c:819) 
[ 611.493364][ T3143] ? inode_set_bytes (fs/stat.c:471) 
[ 611.493368][ T3143] ? devkmsg_emit.constprop.0 (kernel/printk/printk.c:762) 
[ 611.493372][ T3143] ? __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 611.493375][ T3143] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 611.493379][ T3143] ? find_held_lock (kernel/locking/lockdep.c:5350) 
[ 611.493383][ T3143] ? kernel_write (fs/read_write.c:667) 
[ 611.493387][ T3143] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 fs/file.c:1072) 
[ 611.493393][ T3143] ksys_write (fs/read_write.c:738) 
[ 611.493396][ T3143] ? __ia32_sys_read (fs/read_write.c:728) 
[ 611.493401][ T3143] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 611.493404][ T3143] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  611.493407][ T3143] RIP: 0033:0x7f21aa8c536f
[ 611.493411][ T3143] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 89 8a f8 ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 dc 8a f8 ff 48
All code
========
   0:	89 54 24 18          	mov    %edx,0x18(%rsp)
   4:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
   9:	89 7c 24 08          	mov    %edi,0x8(%rsp)
   d:	e8 89 8a f8 ff       	call   0xfffffffffff88a9b
  12:	48 8b 54 24 18       	mov    0x18(%rsp),%rdx
  17:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
  1c:	41 89 c0             	mov    %eax,%r8d
  1f:	8b 7c 24 08          	mov    0x8(%rsp),%edi
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 31                	ja     0x63
  32:	44 89 c7             	mov    %r8d,%edi
  35:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  3a:	e8 dc 8a f8 ff       	call   0xfffffffffff88b1b
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 31                	ja     0x39
   8:	44 89 c7             	mov    %r8d,%edi
   b:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  10:	e8 dc 8a f8 ff       	call   0xfffffffffff88af1
  15:	48                   	rex.W
[  611.493414][ T3143] RSP: 002b:00007fff1fb36b40 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  611.493417][ T3143] RAX: ffffffffffffffda RBX: 00007f21aa6eb148 RCX: 00007f21aa8c536f
[  611.493419][ T3143] RDX: 00000000000002ee RSI: 000055e49f5b8410 RDI: 000000000000000a
[  611.493421][ T3143] RBP: 00000000000002ee R08: 0000000000000000 R09: 0000000000000002
[  611.493422][ T3143] R10: 0000000000000002 R11: 0000000000000293 R12: 00007f219c5dedc0


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