======================================
| [ 426.659329][ T1546] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
| [  426.659331][ T1546]
| [  426.659332][ T1546]
| [  426.659332][ T1546] stack backtrace:
[  426.659339][ T1546] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  426.659340][ T1546] Call Trace:
[  426.659342][ T1546]  <TASK>
[ 426.659344][ T1546] dump_stack_lvl (lib/dump_stack.c:123) 
[ 426.659348][ T1546] print_bad_irq_dependency (kernel/locking/lockdep.c:2618) 
[ 426.659354][ T1546] check_irq_usage (kernel/locking/lockdep.c:2863) 
[ 426.659357][ T1546] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 426.659361][ T1546] ? __bfs (kernel/locking/lockdep.c:1815 (discriminator 1)) 
[ 426.659364][ T1546] ? add_chain_cache (kernel/locking/lockdep.c:1997) 
[ 426.659368][ T1546] ? check_noncircular (kernel/locking/lockdep.c:2160) 
[ 426.659373][ T1546] ? check_prev_add (kernel/locking/lockdep.c:3169) 
[ 426.659375][ T1546] check_prev_add (kernel/locking/lockdep.c:3169) 
[ 426.659379][ T1546] validate_chain (kernel/locking/lockdep.c:3285 kernel/locking/lockdep.c:3908) 
[ 426.659384][ T1546] __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 426.659388][ T1546] lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) 
[ 426.659391][ T1546] ? virtnet_poll_tx (./include/linux/netdevice.h:4674 drivers/net/virtio_net.c:3255) 
[ 426.659396][ T1546] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 426.659400][ T1546] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) 
[ 426.659402][ T1546] ? virtnet_poll_tx (./include/linux/netdevice.h:4674 drivers/net/virtio_net.c:3255) 
[ 426.659405][ T1546] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 426.659409][ T1546] ? virtnet_poll_tx (./include/linux/netdevice.h:4674 drivers/net/virtio_net.c:3255) 
[ 426.659411][ T1546] virtnet_poll_tx (./include/linux/netdevice.h:4674 drivers/net/virtio_net.c:3255) 
[ 426.659415][ T1546] poll_napi (net/core/netpoll.c:156 net/core/netpoll.c:170) 
[ 426.659419][ T1546] netpoll_poll_dev (net/core/netpoll.c:202) 
[ 426.659423][ T1546] __netpoll_send_skb (./include/asm-generic/delay.h:62 net/core/netpoll.c:356) 
[ 426.659427][ T1546] ? netpoll_send_udp (./include/linux/skbuff.h:3150 net/core/netpoll.c:490 net/core/netpoll.c:528) 
[ 426.659431][ T1546] netpoll_send_skb (net/core/netpoll.c:410) 
[ 426.659434][ T1546] send_ext_msg_udp (drivers/net/netconsole.c:1498 drivers/net/netconsole.c:1536 drivers/net/netconsole.c:1692) netconsole 
[ 426.659440][ T1546] write_ext_msg (drivers/net/netconsole.c:1710 drivers/net/netconsole.c:1698) netconsole 
[ 426.659445][ T1546] console_emit_next_record (kernel/printk/printk.c:3055 (discriminator 3) kernel/printk/printk.c:3139 (discriminator 3)) 
[ 426.659450][ T1546] ? devkmsg_read (kernel/printk/printk.c:3082) 
[ 426.659453][ T1546] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 426.659459][ T1546] console_flush_all (kernel/printk/printk.c:3227) 
[ 426.659463][ T1546] ? console_emit_next_record (kernel/printk/printk.c:3188) 
[ 426.659469][ T1546] console_unlock (kernel/printk/printk.c:3286 kernel/printk/printk.c:3325) 
[ 426.659472][ T1546] ? console_flush_all (kernel/printk/printk.c:3320) 
[ 426.659475][ T1546] ? 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) 
[ 426.659477][ T1546] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 426.659481][ T1546] ? __down_trylock_console_sem (kernel/printk/printk.c:332) 
[ 426.659484][ T1546] ? vprintk_emit (kernel/printk/printk.c:2449) 
[ 426.659488][ T1546] vprintk_emit (kernel/printk/printk.c:2450) 
[ 426.659492][ T1546] ? wake_up_klogd_work_func (kernel/printk/printk.c:2397) 
[ 426.659495][ T1546] ? _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:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:249 lib/iov_iter.c:260) 
[ 426.659500][ T1546] ? __create_object (mm/kmemleak.c:774) 
[ 426.659504][ T1546] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 426.659507][ T1546] devkmsg_emit.constprop.0 (kernel/printk/printk.c:749) 
[ 426.659511][ T1546] ? vprintk_default (kernel/printk/printk.c:749) 
[ 426.659515][ T1546] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 426.659518][ T1546] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 21)) 
[ 426.659522][ T1546] ? __kmalloc_noprof (mm/slub.c:4378) 
[ 426.659528][ T1546] devkmsg_write (kernel/printk/printk.c:819) 
[ 426.659531][ T1546] ? devkmsg_emit.constprop.0 (kernel/printk/printk.c:762) 
[ 426.659535][ T1546] ? __lock_acquire (kernel/locking/lockdep.c:5237) 
[ 426.659539][ T1546] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 426.659542][ T1546] ? find_held_lock (kernel/locking/lockdep.c:5350) 
[ 426.659545][ T1546] ? kernel_write (fs/read_write.c:667) 
[ 426.659549][ T1546] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 fs/file.c:1072) 
[ 426.659556][ T1546] ksys_write (fs/read_write.c:738) 
[ 426.659559][ T1546] ? __ia32_sys_read (fs/read_write.c:728) 
[ 426.659561][ T1546] ? 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) 
[ 426.659569][ T1546] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 426.659572][ T1546] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  426.659575][ T1546] RIP: 0033:0x7fd931f4936f
[ 426.659578][ T1546] 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
[  426.659581][ T1546] RSP: 002b:00007ffec60eb240 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
[  426.659584][ T1546] RAX: ffffffffffffffda RBX: 00007fd931d6f148 RCX: 00007fd931f4936f
[  426.659586][ T1546] RDX: 00000000000002ee RSI: 0000559ed4bf3260 RDI: 000000000000000a
[  426.659588][ T1546] RBP: 00000000000002ee R08: 0000000000000000 R09: 0000000000000002
[  426.659589][ T1546] R10: 0000000000000002 R11: 0000000000000293 R12: 00007fd923c61d00


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