======================================
| [  618.532953][    C2]  #3: ffffffff91f905f8 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce (./include/linux/srcu.h:187 (discriminator 2) ./include/linux/srcu.h:294 (discriminator 2) mm/kasan/quarantine.c:259 (discriminator 2))
| [  618.533213][    C2]  #4: ffffffff91d77c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [  618.533444][    C2]
| [  618.533444][    C2] stack backtrace:
[  618.533609][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  618.533611][    C2] Call Trace:
[  618.533613][    C2]  <IRQ>
[  618.533615][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  618.533621][    C2]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[  618.533625][    C2]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  618.533629][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[  618.533632][    C2]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  618.533635][    C2]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  618.533639][    C2]  ? save_trace (kernel/locking/lockdep.c:589)
[  618.533641][    C2]  ? copy_process (./include/linux/ptrace.h:208 (discriminator 3) kernel/fork.c:2466 (discriminator 3))
[  618.533644][    C2]  mark_lock (kernel/locking/lockdep.c:4753)
[  618.533647][    C2]  mark_usage (kernel/locking/lockdep.c:4642)
[  618.533649][    C2]  __lock_acquire (kernel/locking/lockdep.c:5191)
[  618.533652][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  618.533654][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  618.533658][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  618.533660][    C2]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  618.533663][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  618.533666][    C2]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  618.533669][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[  618.533672][    C2]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  618.533674][    C2] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  618.533678][    C2]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[  618.533680][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  618.533683][    C2]  rcu_do_batch (kernel/rcu/tree.c:2617)
[  618.533687][    C2]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[  618.533690][    C2]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  618.533693][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  618.533695][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[  618.533697][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[  618.533700][    C2]  rcu_core (kernel/rcu/tree.c:2869)
[  618.533704][    C2]  handle_softirqs (kernel/softirq.c:622)
[  618.533706][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  618.533710][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  618.533712][    C2]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  618.533716][    C2]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[  618.533718][    C2]  irq_exit_rcu (kernel/softirq.c:752)
[  618.533720][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  618.533723][    C2]  </IRQ>
[  618.533724][    C2]  <TASK>
[  618.533726][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  618.533728][    C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 12) kernel/locking/spinlock.c:198 (discriminator 12))
[  618.533732][    C2] 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
[  618.533734][    C2] RSP: 0018:ffa0000007f377d0 EFLAGS: 00000246
[  618.533737][    C2] RAX: 0000000000000082 RBX: ff11000001041440 RCX: ffffffff90e90613
[  618.533739][    C2] RDX: ff1100001a7c8040 RSI: ffffffff91801bcb RDI: ffffffff9126f6c0
[  618.533741][    C2] RBP: 0000000000000246 R08: 0000000000000000 R09: 0000000000000000
[  618.533743][    C2] R10: 0000000000000002 R11: 0000000000000001 R12: ff11000008fba9c8
[  618.533744][    C2] R13: 0000000000000000 R14: ffa0000007f37818 R15: 0000000000000000
[  618.533747][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[  618.533751][    C2]  qlist_free_all (mm/kasan/quarantine.c:163 (discriminator 2) mm/kasan/quarantine.c:179 (discriminator 2))
[  618.533754][    C2]  kasan_quarantine_reduce (mm/kasan/quarantine.c:286)
[  618.533757][    C2]  __kasan_slab_alloc (mm/kasan/common.c:350)
[  618.533760][    C2]  kmem_cache_alloc_noprof (./include/linux/kasan.h:253 mm/slub.c:4570 mm/slub.c:4899 mm/slub.c:4906)
[  618.533764][    C2]  ? __vma_start_exclude_readers (./arch/x86/include/asm/bitops.h:202 (discriminator 1) ./arch/x86/include/asm/bitops.h:232 (discriminator 1) ./include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 1) ./include/linux/thread_info.h:133 (discriminator 1) ./include/linux/sched.h:2069 (discriminator 1) ./include/linux/sched/signal.h:394 (discriminator 1) ./include/linux/sched/signal.h:413 (discriminator 1) mm/mmap_lock.c:126 (discriminator 1))
[  618.533769][    C2]  vm_area_dup (mm/vma_init.c:123 (discriminator 7))
[  618.533772][    C2]  dup_mmap (mm/mmap.c:1786)
[  618.533776][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  618.533779][    C2]  ? mmap_read_lock_maybe_expand (./include/linux/rwsem.h:221 (discriminator 1))
[  618.533782][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  618.533784][    C2]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  618.533787][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  618.533789][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  618.533791][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  618.533796][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  618.533798][    C2]  ? copy_process (kernel/fork.c:1533 kernel/fork.c:1586 kernel/fork.c:2264)
[  618.533801][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  618.533805][    C2]  copy_process (kernel/fork.c:1534 kernel/fork.c:1586 kernel/fork.c:2264)
[  618.533807][    C2]  ? restore_fpregs_from_user (arch/x86/kernel/fpu/signal.c:300)
[  618.533814][    C2]  ? pidfd_prepare (./include/linux/list.h:1021 (discriminator 3))
[  618.533817][    C2]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  618.533820][    C2]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  618.533822][    C2]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  618.533825][    C2]  kernel_clone (kernel/fork.c:2722)
[  618.533828][    C2]  ? create_io_thread (kernel/fork.c:2660)
[  618.533832][    C2]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[  618.533834][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  618.533838][    C2]  __do_sys_clone (kernel/fork.c:2863)
[  618.533841][    C2]  ? kernel_clone (./include/trace/events/sched.h:396 (discriminator 19))
[  618.533846][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  618.533848][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  618.533853][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  618.533855][    C2]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  618.533857][    C2]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  618.533860][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  618.533862][    C2] RIP: 0033:0x7f82a530a226
[  618.533865][    C2] 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)
	...
[  618.533867][    C2] RSP: 002b:00007ffcf10360a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  618.533869][    C2] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f82a530a226
[  618.533871][    C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  618.533872][    C2] RBP: 00007ffcf10360c0 R08: 0000000000000000 R09: 0000000000000030
[  618.533874][    C2] R10: 00007f82a5247e50 R11: 0000000000000246 R12: 000055764731e160


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