======================================
| [   57.053030][    C1] 1 lock held by mirror_gre_nh.s/1032:
| [   57.053110][    C1]  #0: ffffffffb2377c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   57.053259][    C1]
| [   57.053259][    C1] stack backtrace:
[   57.053361][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   57.053363][    C1] Call Trace:
[   57.053364][    C1]  <TASK>
[   57.053366][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   57.053371][    C1]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[   57.053373][    C1]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   57.053377][    C1]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[   57.053378][    C1]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 16) arch/x86/kernel/apic/apic.c:1061 (discriminator 16))
[   57.053381][    C1]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   57.053382][    C1]  ? save_trace (kernel/locking/lockdep.c:589)
[   57.053385][    C1]  mark_lock (kernel/locking/lockdep.c:4753)
[   57.053387][    C1]  mark_usage (kernel/locking/lockdep.c:4642)
[   57.053388][    C1]  __lock_acquire (kernel/locking/lockdep.c:5191)
[   57.053389][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   57.053392][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   57.053396][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   57.053398][    C1]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   57.053399][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   57.053401][    C1]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   57.053403][    C1]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[   57.053405][    C1]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   57.053406][    C1] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   57.053408][    C1]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[   57.053410][    C1]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   57.053411][    C1]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   57.053413][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   57.053415][    C1]  ? sched_balance_softirq (kernel/sched/fair.c:13350)
[   57.053418][    C1]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   57.053420][    C1]  ? sched_balance_domains (kernel/sched/fair.c:12634)
[   57.053422][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   57.053424][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   57.053425][    C1]  ? trace_irq_disable.constprop.0 (./include/trace/events/preemptirq.h:36 (discriminator 22))
[   57.053427][    C1]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   57.053428][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   57.053430][    C1]  rcu_core (kernel/rcu/tree.c:2869)
[   57.053432][    C1]  handle_softirqs (kernel/softirq.c:622)
[   57.053434][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   57.053437][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   57.053438][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   57.053440][    C1]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   57.053442][    C1]  irq_exit_rcu (kernel/softirq.c:752)
[   57.053443][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 16) arch/x86/kernel/apic/apic.c:1061 (discriminator 16))
[   57.053445][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   57.053447][    C1] RIP: 0033:0x560cd309a4c4
[   57.053450][    C1] Code: 84 00 00 00 00 00 83 e8 30 3c 09 77 98 0f b6 42 01 48 83 c2 01 84 c0 75 ed b8 01 00 00 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa <48> 85 ff 0f 84 db 00 00 00 55 48 89 e5 41 57 49 89 d7 41 56 49 89
All code
========
   0:	84 00                	test   %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	83 e8 30             	sub    $0x30,%eax
   9:	3c 09                	cmp    $0x9,%al
   b:	77 98                	ja     0xffffffffffffffa5
   d:	0f b6 42 01          	movzbl 0x1(%rdx),%eax
  11:	48 83 c2 01          	add    $0x1,%rdx
  15:	84 c0                	test   %al,%al
  17:	75 ed                	jne    0x6
  19:	b8 01 00 00 00       	mov    $0x1,%eax
  1e:	c3                   	ret
  1f:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  26:	f3 0f 1e fa          	endbr64
  2a:*	48 85 ff             	test   %rdi,%rdi		<-- trapping instruction
  2d:	0f 84 db 00 00 00    	je     0x10e
  33:	55                   	push   %rbp
  34:	48 89 e5             	mov    %rsp,%rbp
  37:	41 57                	push   %r15
  39:	49 89 d7             	mov    %rdx,%r15
  3c:	41 56                	push   %r14
  3e:	49                   	rex.WB
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 85 ff             	test   %rdi,%rdi
   3:	0f 84 db 00 00 00    	je     0xe4
   9:	55                   	push   %rbp
   a:	48 89 e5             	mov    %rsp,%rbp
   d:	41 57                	push   %r15
   f:	49 89 d7             	mov    %rdx,%r15
  12:	41 56                	push   %r14
  14:	49                   	rex.WB
  15:	89                   	.byte 0x89
[   57.053452][    C1] RSP: 002b:00007ffe12e79fc8 EFLAGS: 00000246
[   57.053454][    C1] RAX: 0000560d1248979e RBX: 0000560d1237fc10 RCX: 00007ffe12e7a23c
[   57.053455][    C1] RDX: 00007ffe12e7a244 RSI: 0000000000000000 RDI: 0000560d12489790
[   57.053456][    C1] RBP: 00007ffe12e7a0f0 R08: 0000000000000001 R09: 000000000000005d
[   57.053457][    C1] R10: 0000000000000000 R11: 0000000000000029 R12: 0000560d1248ce10


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock