======================================
| [ 481.311072][ T1618] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
| [  481.311074][ T1618]
| [  481.311074][ T1618]
| [  481.311074][ T1618] stack backtrace:
[  481.311082][ T1618] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  481.311084][ T1618] Call Trace:
[  481.311086][ T1618]  <TASK>
[ 481.311088][ T1618] dump_stack_lvl (lib/dump_stack.c:123) 
[ 481.311094][ T1618] print_bad_irq_dependency (kernel/locking/lockdep.c:2618) 
[ 481.311100][ T1618] check_irq_usage (kernel/locking/lockdep.c:2863) 
[ 481.311103][ T1618] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 481.311108][ T1618] ? __bfs (kernel/locking/lockdep.c:1815 (discriminator 1)) 
[ 481.311113][ T1618] ? check_path.constprop.0 (kernel/locking/lockdep.c:2133) 
[ 481.311115][ T1618] ? check_noncircular (kernel/locking/lockdep.c:2160) 
[ 481.311120][ T1618] ? check_prev_add (kernel/locking/lockdep.c:3169) 
[ 481.311122][ T1618] check_prev_add (kernel/locking/lockdep.c:3169) 
[ 481.311126][ T1618] validate_chain (kernel/locking/lockdep.c:3285 kernel/locking/lockdep.c:3908) 
[ 481.311130][ T1618] __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 481.311135][ T1618] lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) 
[ 481.311138][ T1618] ? virtnet_poll_tx (./include/linux/netdevice.h:4674 drivers/net/virtio_net.c:3255) 
[ 481.311141][ T1618] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 481.311145][ T1618] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 481.311148][ T1618] ? virtnet_poll_tx (./include/linux/netdevice.h:4674 drivers/net/virtio_net.c:3255) 
[ 481.311151][ T1618] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 481.311155][ T1618] ? virtnet_poll_tx (./include/linux/netdevice.h:4674 drivers/net/virtio_net.c:3255) 
[ 481.311157][ T1618] virtnet_poll_tx (./include/linux/netdevice.h:4674 drivers/net/virtio_net.c:3255) 
[ 481.311161][ T1618] poll_napi (net/core/netpoll.c:156 net/core/netpoll.c:170) 
[ 481.311165][ T1618] netpoll_poll_dev (net/core/netpoll.c:202) 
[ 481.311169][ T1618] __netpoll_send_skb (./include/asm-generic/delay.h:62 net/core/netpoll.c:356) 
[ 481.311173][ T1618] ? netpoll_send_udp (./include/linux/skbuff.h:3150 net/core/netpoll.c:490 net/core/netpoll.c:528) 
[ 481.311177][ T1618] netpoll_send_skb (net/core/netpoll.c:410) 
[ 481.311180][ T1618] send_ext_msg_udp (drivers/net/netconsole.c:1498 drivers/net/netconsole.c:1536 drivers/net/netconsole.c:1692) netconsole 
[ 481.311186][ T1618] write_ext_msg (drivers/net/netconsole.c:1710 drivers/net/netconsole.c:1698) netconsole 
[ 481.311191][ T1618] console_emit_next_record (kernel/printk/printk.c:3055 (discriminator 3) kernel/printk/printk.c:3139 (discriminator 3)) 
[ 481.311195][ T1618] ? devkmsg_read (kernel/printk/printk.c:3082) 
[ 481.311199][ T1618] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 481.311204][ T1618] console_flush_all (kernel/printk/printk.c:3227) 
[ 481.311209][ T1618] ? console_emit_next_record (kernel/printk/printk.c:3188) 
[ 481.311215][ T1618] console_unlock (kernel/printk/printk.c:3286 kernel/printk/printk.c:3325) 
[ 481.311218][ T1618] ? console_flush_all (kernel/printk/printk.c:3320) 
[ 481.311221][ T1618] ? 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) 
[ 481.311223][ T1618] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 481.311228][ T1618] ? __down_trylock_console_sem (kernel/printk/printk.c:332) 
[ 481.311231][ T1618] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 481.311235][ T1618] vprintk_emit (kernel/printk/printk.c:2450) 
[ 481.311238][ T1618] ? wake_up_klogd_work_func (kernel/printk/printk.c:2397) 
[ 481.311242][ T1618] ? rcu_gp_is_expedited (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 kernel/rcu/update.c:196) 
[ 481.311245][ T1618] ? synchronize_rcu (kernel/rcu/tree.c:3351) 
[ 481.311250][ T1618] _printk (kernel/printk/printk.c:2470) 
[ 481.311253][ T1618] ? console_prepend_message (kernel/printk/printk.c:2470) 
[ 481.311258][ T1618] ? trace_rcu_sr_normal (./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/rcu.h:681) 
[ 481.311262][ T1618] enabled_store (drivers/net/netconsole.c:630) netconsole 
[ 481.311266][ T1618] ? down_read (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1268 kernel/locking/rwsem.c:1274 kernel/locking/rwsem.c:1539) 
[ 481.311270][ T1618] ? netconsole_process_cleanups_core (drivers/net/netconsole.c:561) netconsole 
[ 481.311276][ T1618] ? netconsole_process_cleanups_core (drivers/net/netconsole.c:561) netconsole 
[ 481.311280][ T1618] configfs_write_iter (fs/configfs/file.c:208 fs/configfs/file.c:229) 
[ 481.311285][ T1618] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 481.311288][ T1618] ? ww_mutex_lock (kernel/locking/mutex.c:759) 
[ 481.311291][ T1618] ? kernel_write (fs/read_write.c:667) 
[ 481.311295][ T1618] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 fs/file.c:1072) 
[ 481.311302][ T1618] ksys_write (fs/read_write.c:738) 
[ 481.311305][ T1618] ? __ia32_sys_read (fs/read_write.c:728) 
[ 481.311310][ T1618] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 481.311314][ T1618] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  481.311316][ T1618] RIP: 0033:0x7fa4a647f36f
[ 481.311320][ T1618] 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
[  481.311323][ T1618] RSP: 002b:00007fff83080a10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  481.311326][ T1618] RAX: ffffffffffffffda RBX: 00007fa4a62a5148 RCX: 00007fa4a647f36f
[  481.311328][ T1618] RDX: 0000000000000001 RSI: 000055e76a8d71a0 RDI: 000000000000000a
[  481.311330][ T1618] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000002
[  481.311331][ T1618] R10: 0000000000000002 R11: 0000000000000293 R12: 00007fa498198dc0


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