======================================
| [  505.893547][    C1] 1 lock held by tc/10748:
| [  505.893642][    C1]  #0: ffffffff9b777c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [  505.893813][    C1]
| [  505.893813][    C1] stack backtrace:
[  505.893933][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  505.893935][    C1] Call Trace:
[  505.893936][    C1]  <IRQ>
[  505.893938][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  505.893943][    C1]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[  505.893945][    C1]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  505.893949][    C1]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[  505.893951][    C1]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  505.893953][    C1]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  505.893955][    C1]  ? save_trace (kernel/locking/lockdep.c:589)
[  505.893956][    C1]  ? execmem_alloc (mm/execmem.c:290 mm/execmem.c:339 mm/execmem.c:475)
[  505.893961][    C1]  mark_lock (kernel/locking/lockdep.c:4753)
[  505.893962][    C1]  mark_usage (kernel/locking/lockdep.c:4642)
[  505.893964][    C1]  __lock_acquire (kernel/locking/lockdep.c:5191)
[  505.893965][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  505.893967][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  505.893971][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  505.893973][    C1]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  505.893975][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  505.893977][    C1]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  505.893978][    C1]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[  505.893980][    C1]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  505.893982][    C1] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  505.893984][    C1]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[  505.893985][    C1]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  505.893987][    C1]  rcu_do_batch (kernel/rcu/tree.c:2617)
[  505.893989][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  505.893991][    C1]  ? sched_balance_softirq (kernel/sched/fair.c:13350)
[  505.893994][    C1]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[  505.893996][    C1]  ? sched_balance_domains (kernel/sched/fair.c:12634)
[  505.893998][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  505.893999][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  505.894001][    C1]  ? trace_irq_disable.constprop.0 (./include/trace/events/preemptirq.h:36 (discriminator 22))
[  505.894002][    C1]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  505.894004][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  505.894006][    C1]  rcu_core (kernel/rcu/tree.c:2869)
[  505.894008][    C1]  handle_softirqs (kernel/softirq.c:622)
[  505.894009][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  505.894012][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  505.894014][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  505.894016][    C1]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[  505.894017][    C1]  irq_exit_rcu (kernel/softirq.c:752)
[  505.894019][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  505.894021][    C1]  </IRQ>
[  505.894021][    C1]  <TASK>
[  505.894022][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  505.894024][    C1] RIP: 0010:debug_lockdep_rcu_enabled (kernel/rcu/update.c:320 (discriminator 5))
[  505.894026][    C1] Code: 00 0f 1f 00 f3 0f 1e fa 8b 05 b2 60 7d 01 85 c0 74 20 8b 05 c0 71 7d 01 85 c0 74 16 65 48 8b 05 10 87 00 02 8b 80 ec 0a 00 00 <85> c0 0f 94 c0 0f b6 c0 c3 90 0f 1f 40 d6 f6 87 88 00 00 00 03 75
All code
========
   0:	00 0f                	add    %cl,(%rdi)
   2:	1f                   	(bad)
   3:	00 f3                	add    %dh,%bl
   5:	0f 1e fa             	nop    %edx
   8:	8b 05 b2 60 7d 01    	mov    0x17d60b2(%rip),%eax        # 0x17d60c0
   e:	85 c0                	test   %eax,%eax
  10:	74 20                	je     0x32
  12:	8b 05 c0 71 7d 01    	mov    0x17d71c0(%rip),%eax        # 0x17d71d8
  18:	85 c0                	test   %eax,%eax
  1a:	74 16                	je     0x32
  1c:	65 48 8b 05 10 87 00 	mov    %gs:0x2008710(%rip),%rax        # 0x2008734
  23:	02 
  24:	8b 80 ec 0a 00 00    	mov    0xaec(%rax),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 94 c0             	sete   %al
  2f:	0f b6 c0             	movzbl %al,%eax
  32:	c3                   	ret
  33:	90                   	nop
  34:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  38:	f6 87 88 00 00 00 03 	testb  $0x3,0x88(%rdi)
  3f:	75                   	.byte 0x75

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 94 c0             	sete   %al
   5:	0f b6 c0             	movzbl %al,%eax
   8:	c3                   	ret
   9:	90                   	nop
   a:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   e:	f6 87 88 00 00 00 03 	testb  $0x3,0x88(%rdi)
  15:	75                   	.byte 0x75
[  505.894028][    C1] RSP: 0018:ffa000000078f810 EFLAGS: 00000202
[  505.894030][    C1] RAX: 0000000000000000 RBX: 1ff40000000f1f04 RCX: 0000000000000000
[  505.894032][    C1] RDX: 0000000000000000 RSI: 0000000000000143 RDI: ffffffff9b1fef31
[  505.894033][    C1] RBP: 0000000000000000 R08: ffffffff9b1fef31 R09: 0000000000000143
[  505.894033][    C1] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000400
[  505.894034][    C1] R13: ff1100001664c640 R14: ffffffff9b1fef31 R15: 0000000000000143
[  505.894037][    C1]  __might_resched (kernel/sched/core.c:9125 (discriminator 2))
[  505.894040][    C1]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[  505.894042][    C1]  ? kmem_cache_alloc_noprof (./include/linux/sched/mm.h:318 mm/slub.c:4521 mm/slub.c:4876 mm/slub.c:4906)
[  505.894046][    C1]  ? __alloc_object (mm/kmemleak.c:483 (discriminator 1) mm/kmemleak.c:665 (discriminator 1))
[  505.894048][    C1]  kmem_cache_alloc_noprof (./include/linux/sched/mm.h:323 (discriminator 2) mm/slub.c:4521 (discriminator 2) mm/slub.c:4876 (discriminator 2) mm/slub.c:4906 (discriminator 2))
[  505.894050][    C1]  __alloc_object (mm/kmemleak.c:483 (discriminator 1) mm/kmemleak.c:665 (discriminator 1))
[  505.894052][    C1]  __create_object (mm/kmemleak.c:779)
[  505.894054][    C1]  __kmalloc_cache_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4575 mm/slub.c:4899 mm/slub.c:5415)
[  505.894056][    C1]  ovl_open (./include/linux/slab.h:950 (discriminator 1) ./include/linux/slab.h:1188 (discriminator 1) fs/overlayfs/file.c:99 (discriminator 1) fs/overlayfs/file.c:226 (discriminator 1))
[  505.894060][    C1]  ? ovl_llseek (fs/overlayfs/file.c:255)
[  505.894062][    C1]  ? 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)
[  505.894064][    C1]  ? ovl_llseek (fs/overlayfs/file.c:255)
[  505.894065][    C1]  do_dentry_open (fs/open.c:947)
[  505.894068][    C1]  vfs_open (fs/open.c:1079)
[  505.894070][    C1]  ? may_open (fs/namei.c:4276)
[  505.894073][    C1]  ? lookup_open.isra.0 (fs/namei.c:4504)
[  505.894075][    C1]  do_open (fs/namei.c:4699)
[  505.894082][    C1]  ? init_file.isra.0 (./include/linux/instrumented.h:97 ./include/linux/atomic/atomic-instrumented.h:3223 ./include/linux/file_ref.h:61 fs/file_table.c:229)
[  505.894085][    C1]  path_openat (fs/namei.c:4858)
[  505.894087][    C1]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  505.894089][    C1]  ? kernel_tmpfile_open (fs/namei.c:4800)
[  505.894090][    C1]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  505.894092][    C1]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  505.894094][    C1]  do_file_open (fs/namei.c:4887)
[  505.894096][    C1]  ? path_openat (./include/linux/mount.h:68 (discriminator 3))
[  505.894099][    C1]  ? page_get_link_raw (fs/namei.c:6328)
[  505.894101][    C1]  ? 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)
[  505.894103][    C1]  ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:169 (discriminator 1) kernel/locking/spinlock.c:190 (discriminator 1))
[  505.894105][    C1]  ? alloc_fd (./include/linux/spinlock.h:390 fs/file.c:611)
[  505.894108][    C1]  do_sys_openat2 (fs/open.c:1364 (discriminator 5))
[  505.894110][    C1]  ? build_open_flags (fs/open.c:1212)
[  505.894112][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  505.894114][    C1]  __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[  505.894116][    C1]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  505.894118][    C1]  ? __ia32_sys_open (fs/open.c:1374)
[  505.894120][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  505.894122][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  505.894123][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  505.894125][    C1]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  505.894127][    C1]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  505.894128][    C1]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  505.894130][    C1]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  505.894132][    C1] RIP: 0033:0x7fc3e5519625
[  505.894134][    C1] Code: 48 89 e5 48 89 55 e0 41 83 e2 40 75 28 89 f2 f7 d2 81 e2 00 00 41 00 74 1c 89 f2 bf 9c ff ff ff 48 89 c6 b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 23 5d c3 90 48 8d 4d 10 c7 45 b8 10 00 00 00
All code
========
   0:	48 89 e5             	mov    %rsp,%rbp
   3:	48 89 55 e0          	mov    %rdx,-0x20(%rbp)
   7:	41 83 e2 40          	and    $0x40,%r10d
   b:	75 28                	jne    0x35
   d:	89 f2                	mov    %esi,%edx
   f:	f7 d2                	not    %edx
  11:	81 e2 00 00 41 00    	and    $0x410000,%edx
  17:	74 1c                	je     0x35
  19:	89 f2                	mov    %esi,%edx
  1b:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  20:	48 89 c6             	mov    %rax,%rsi
  23:	b8 01 01 00 00       	mov    $0x101,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 23                	ja     0x55
  32:	5d                   	pop    %rbp
  33:	c3                   	ret
  34:	90                   	nop
  35:	48 8d 4d 10          	lea    0x10(%rbp),%rcx
  39:	c7 45 b8 10 00 00 00 	movl   $0x10,-0x48(%rbp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 23                	ja     0x2b
   8:	5d                   	pop    %rbp
   9:	c3                   	ret
   a:	90                   	nop
   b:	48 8d 4d 10          	lea    0x10(%rbp),%rcx
   f:	c7 45 b8 10 00 00 00 	movl   $0x10,-0x48(%rbp)
[  505.894135][    C1] RSP: 002b:00007ffd0903a970 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
[  505.894136][    C1] RAX: ffffffffffffffda RBX: 00007ffd0903ac00 RCX: 00007fc3e5519625
[  505.894137][    C1] RDX: 0000000000080000 RSI: 00007ffd0903a9f0 RDI: 00000000ffffff9c
[  505.894138][    C1] RBP: 00007ffd0903a970 R08: 00007ffd0903abe7 R09: 0000000000000000
[  505.894139][    C1] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd0903a9f0


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