======================================
| [ 598.609167][ T3087] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
| [  598.609169][ T3087]
| [  598.609170][ T3087]
| [  598.609170][ T3087] stack backtrace:
[  598.609178][ T3087] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  598.609181][ T3087] Call Trace:
[  598.609183][ T3087]  <TASK>
[ 598.609185][ T3087] dump_stack_lvl (lib/dump_stack.c:123) 
[ 598.609190][ T3087] print_bad_irq_dependency (kernel/locking/lockdep.c:2618) 
[ 598.609196][ T3087] check_irq_usage (kernel/locking/lockdep.c:2863) 
[ 598.609199][ T3087] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 598.609204][ T3087] ? __bfs (kernel/locking/lockdep.c:1815 (discriminator 1)) 
[ 598.609206][ T3087] ? add_chain_cache (kernel/locking/lockdep.c:1997) 
[ 598.609211][ T3087] ? check_noncircular (kernel/locking/lockdep.c:2160) 
[ 598.609216][ T3087] ? check_prev_add (kernel/locking/lockdep.c:3169) 
[ 598.609218][ T3087] check_prev_add (kernel/locking/lockdep.c:3169) 
[ 598.609222][ T3087] validate_chain (kernel/locking/lockdep.c:3285 kernel/locking/lockdep.c:3908) 
[ 598.609226][ T3087] __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 598.609231][ T3087] lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) 
[ 598.609233][ T3087] ? virtnet_poll_tx (./include/linux/netdevice.h:4665 drivers/net/virtio_net.c:3255) 
[ 598.609237][ T3087] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 598.609242][ T3087] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 598.609244][ T3087] ? virtnet_poll_tx (./include/linux/netdevice.h:4665 drivers/net/virtio_net.c:3255) 
[ 598.609248][ T3087] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 598.609251][ T3087] ? virtnet_poll_tx (./include/linux/netdevice.h:4665 drivers/net/virtio_net.c:3255) 
[ 598.609253][ T3087] virtnet_poll_tx (./include/linux/netdevice.h:4665 drivers/net/virtio_net.c:3255) 
[ 598.609257][ T3087] poll_napi (net/core/netpoll.c:156 net/core/netpoll.c:170) 
[ 598.609260][ T3087] netpoll_poll_dev (net/core/netpoll.c:202) 
[ 598.609265][ T3087] __netpoll_send_skb (./include/asm-generic/delay.h:62 net/core/netpoll.c:356) 
[ 598.609268][ T3087] ? netpoll_send_udp (./include/linux/skbuff.h:3109 net/core/netpoll.c:490 net/core/netpoll.c:528) 
[ 598.609272][ T3087] netpoll_send_skb (net/core/netpoll.c:410) 
[ 598.609275][ T3087] send_ext_msg_udp (drivers/net/netconsole.c:1498 drivers/net/netconsole.c:1536 drivers/net/netconsole.c:1692) netconsole 
[ 598.609281][ T3087] write_ext_msg (drivers/net/netconsole.c:1710 drivers/net/netconsole.c:1698) netconsole 
[ 598.609287][ T3087] console_emit_next_record (kernel/printk/printk.c:3055 (discriminator 3) kernel/printk/printk.c:3139 (discriminator 3)) 
[ 598.609291][ T3087] ? devkmsg_read (kernel/printk/printk.c:3082) 
[ 598.609294][ T3087] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 598.609300][ T3087] console_flush_all (kernel/printk/printk.c:3227) 
[ 598.609304][ T3087] ? console_emit_next_record (kernel/printk/printk.c:3188) 
[ 598.609310][ T3087] console_unlock (kernel/printk/printk.c:3286 kernel/printk/printk.c:3325) 
[ 598.609313][ T3087] ? console_flush_all (kernel/printk/printk.c:3320) 
[ 598.609316][ T3087] ? lock_acquire (kernel/locking/lockdep.c:5872) 
[ 598.609318][ T3087] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 598.609322][ T3087] ? __down_trylock_console_sem (kernel/printk/printk.c:332) 
[ 598.609325][ T3087] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 598.609329][ T3087] vprintk_emit (kernel/printk/printk.c:2450) 
[ 598.609332][ T3087] ? wake_up_klogd_work_func (kernel/printk/printk.c:2397) 
[ 598.609336][ T3087] ? _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) 
[ 598.609342][ T3087] ? __create_object (mm/kmemleak.c:771) 
[ 598.609346][ T3087] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 598.609350][ T3087] devkmsg_emit.constprop.0 (kernel/printk/printk.c:749) 
[ 598.609354][ T3087] ? vprintk_default (kernel/printk/printk.c:749) 
[ 598.609357][ T3087] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 598.609361][ T3087] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 21)) 
[ 598.609364][ T3087] ? __kmalloc_noprof (mm/slub.c:4378) 
[ 598.609369][ T3087] devkmsg_write (kernel/printk/printk.c:819) 
[ 598.609373][ T3087] ? devkmsg_emit.constprop.0 (kernel/printk/printk.c:762) 
[ 598.609377][ T3087] ? __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 598.609380][ T3087] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 598.609384][ T3087] ? find_held_lock (kernel/locking/lockdep.c:5350) 
[ 598.609389][ T3087] ? kernel_write (fs/read_write.c:667) 
[ 598.609393][ T3087] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 fs/file.c:1072) 
[ 598.609402][ T3087] ksys_write (fs/read_write.c:738) 
[ 598.609404][ T3087] ? __ia32_sys_read (fs/read_write.c:728) 
[ 598.609407][ T3087] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:143 ./include/linux/mmap_lock.h:267 arch/x86/mm/fault.c:1338) 
[ 598.609413][ T3087] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 598.609417][ T3087] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  598.609419][ T3087] RIP: 0033:0x7f8a7437636f
[ 598.609424][ T3087] 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
[  598.609427][ T3087] RSP: 002b:00007ffd70203860 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  598.609430][ T3087] RAX: ffffffffffffffda RBX: 00007f8a7419c148 RCX: 00007f8a7437636f
[  598.609432][ T3087] RDX: 00000000000002ee RSI: 00005555b6e7cde0 RDI: 000000000000000a
[  598.609434][ T3087] RBP: 00000000000002ee R08: 0000000000000000 R09: 0000000000000002
[  598.609436][ T3087] R10: 0000000000000002 R11: 0000000000000293 R12: 00007f8a66081e80


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