======================================
| [  219.483155][    C0] 1 lock held by mirror_gre_brid/3087:
| [  219.483285][    C0]  #0: ffffffffb3f77c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [  219.483526][    C0]
| [  219.483526][    C0] stack backtrace:
[  219.483694][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  219.483697][    C0] Call Trace:
[  219.483699][    C0]  <IRQ>
[  219.483701][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  219.483707][    C0]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[  219.483711][    C0]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  219.483715][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[  219.483718][    C0]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  219.483721][    C0]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  219.483725][    C0]  ? save_trace (kernel/locking/lockdep.c:589)
[  219.483727][    C0]  ? __noinstr_text_start (??:?)
[  219.483730][    C0]  mark_lock (kernel/locking/lockdep.c:4753)
[  219.483733][    C0]  mark_usage (kernel/locking/lockdep.c:4642)
[  219.483735][    C0]  __lock_acquire (kernel/locking/lockdep.c:5191)
[  219.483738][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  219.483740][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  219.483746][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  219.483748][    C0]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  219.483752][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  219.483754][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  219.483757][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[  219.483760][    C0]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  219.483763][    C0] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  219.483766][    C0]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[  219.483769][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  219.483771][    C0]  rcu_do_batch (kernel/rcu/tree.c:2617)
[  219.483775][    C0]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[  219.483779][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  219.483781][    C0]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[  219.483783][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  219.483786][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  219.483788][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[  219.483790][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[  219.483794][    C0]  rcu_core (kernel/rcu/tree.c:2869)
[  219.483797][    C0]  handle_softirqs (kernel/softirq.c:622)
[  219.483799][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  219.483803][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  219.483806][    C0]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  219.483809][    C0]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[  219.483812][    C0]  irq_exit_rcu (kernel/softirq.c:752)
[  219.483814][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  219.483817][    C0]  </IRQ>
[  219.483817][    C0]  <TASK>
[  219.483819][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  219.483822][    C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 12) kernel/locking/spinlock.c:198 (discriminator 12))
[  219.483825][    C0] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 21 7e ca fd 48 89 df e8 a9 d4 ca fd f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 30 62 bd fd 65 8b 05 29 0a fe 01 85 c0 74 12 5b
All code
========
   0:	f5                   	cmc
   1:	53                   	push   %rbx
   2:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
   7:	48 89 fb             	mov    %rdi,%rbx
   a:	48 83 c7 18          	add    $0x18,%rdi
   e:	e8 21 7e ca fd       	call   0xfffffffffdca7e34
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 a9 d4 ca fd       	call   0xfffffffffdcad4c4
  1b:	f7 c5 00 02 00 00    	test   $0x200,%ebp
  21:	75 1f                	jne    0x42
  23:	9c                   	pushf
  24:	58                   	pop    %rax
  25:	f6 c4 02             	test   $0x2,%ah
  28:	75 2f                	jne    0x59
  2a:*	bf 01 00 00 00       	mov    $0x1,%edi		<-- trapping instruction
  2f:	e8 30 62 bd fd       	call   0xfffffffffdbd6264
  34:	65 8b 05 29 0a fe 01 	mov    %gs:0x1fe0a29(%rip),%eax        # 0x1fe0a64
  3b:	85 c0                	test   %eax,%eax
  3d:	74 12                	je     0x51
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	bf 01 00 00 00       	mov    $0x1,%edi
   5:	e8 30 62 bd fd       	call   0xfffffffffdbd623a
   a:	65 8b 05 29 0a fe 01 	mov    %gs:0x1fe0a29(%rip),%eax        # 0x1fe0a3a
  11:	85 c0                	test   %eax,%eax
  13:	74 12                	je     0x27
  15:	5b                   	pop    %rbx
[  219.483828][    C0] RSP: 0018:ffa00000046279c8 EFLAGS: 00000246
[  219.483831][    C0] RAX: 0000000000000096 RBX: ff11000001155300 RCX: ffffffffb3090613
[  219.483833][    C0] RDX: ff1100000d0e8040 RSI: ffffffffb3a01bcb RDI: ffffffffb346f6c0
[  219.483834][    C0] RBP: 0000000000000206 R08: 0000000000000000 R09: 0000000000000000
[  219.483836][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: ff11000001155300
[  219.483837][    C0] R13: ff11000001994340 R14: ff1100000bf44640 R15: ffd40000002fd000
[  219.483840][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[  219.483844][    C0]  get_from_partial_node (./include/linux/spinlock.h:408 (discriminator 3) mm/slub.c:3835 (discriminator 3))
[  219.483849][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  219.483852][    C0]  ___slab_alloc (mm/slub.c:3924 (discriminator 1) mm/slub.c:4441 (discriminator 1))
[  219.483855][    C0]  ? dup_task_struct (kernel/fork.c:187 (discriminator 7) kernel/fork.c:918 (discriminator 7))
[  219.483858][    C0]  ? __pcs_replace_empty_main (mm/slub.c:4615 (discriminator 20))
[  219.483862][    C0]  kmem_cache_alloc_node_noprof (mm/slub.c:4511 mm/slub.c:4887 mm/slub.c:4951)
[  219.483865][    C0]  ? dup_task_struct (kernel/fork.c:187 (discriminator 7) kernel/fork.c:918 (discriminator 7))
[  219.483868][    C0]  dup_task_struct (kernel/fork.c:187 (discriminator 7) kernel/fork.c:918 (discriminator 7))
[  219.483870][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  219.483873][    C0]  copy_process (kernel/fork.c:2090 (discriminator 1))
[  219.483876][    C0]  ? restore_fpregs_from_user (arch/x86/kernel/fpu/signal.c:300)
[  219.483879][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  219.483882][    C0]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  219.483884][    C0]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  219.483887][    C0]  ? pidfd_prepare (./include/linux/list.h:1021 (discriminator 3))
[  219.483891][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  219.483893][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  219.483896][    C0]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  219.483899][    C0]  kernel_clone (kernel/fork.c:2722)
[  219.483902][    C0]  ? create_io_thread (kernel/fork.c:2660)
[  219.483905][    C0]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[  219.483908][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  219.483912][    C0]  __do_sys_clone (kernel/fork.c:2863)
[  219.483915][    C0]  ? kernel_clone (./include/trace/events/sched.h:396 (discriminator 19))
[  219.483920][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  219.483923][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  219.483926][    C0]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  219.483928][    C0]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  219.483930][    C0]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  219.483933][    C0]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  219.483935][    C0] RIP: 0033:0x7f11fd4ca226
[  219.483939][    C0] Code: 7d e0 e8 7d a4 f5 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5a 89 c3 85 c0 75 2f 64 48 8b 04 25 10 00 00
All code
========
   0:	7d e0                	jge    0xffffffffffffffe2
   2:	e8 7d a4 f5 ff       	call   0xfffffffffff5a484
   7:	45 31 c0             	xor    %r8d,%r8d
   a:	31 d2                	xor    %edx,%edx
   c:	31 f6                	xor    %esi,%esi
   e:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
  15:	00 00 
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 5a                	ja     0x8c
  32:	89 c3                	mov    %eax,%ebx
  34:	85 c0                	test   %eax,%eax
  36:	75 2f                	jne    0x67
  38:	64                   	fs
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	04 25                	add    $0x25,%al
  3d:	10 00                	adc    %al,(%rax)
	...

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 5a                	ja     0x62
   8:	89 c3                	mov    %eax,%ebx
   a:	85 c0                	test   %eax,%eax
   c:	75 2f                	jne    0x3d
   e:	64                   	fs
   f:	48                   	rex.W
  10:	8b                   	.byte 0x8b
  11:	04 25                	add    $0x25,%al
  13:	10 00                	adc    %al,(%rax)
	...
[  219.483940][    C0] RSP: 002b:00007ffc53cc5ed0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  219.483943][    C0] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f11fd4ca226
[  219.483944][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  219.483946][    C0] RBP: 00007ffc53cc5ef0 R08: 0000000000000000 R09: 0000000000000030
[  219.483947][    C0] R10: 00007f11fd407e50 R11: 0000000000000246 R12: 00005632eaa74c80


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