======================================
| [   26.003007][    C3]  #0: ffffffffbc577d20 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
| [   26.003299][    C3]  #1: ffffffffbc577c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   26.003664][    C3]
| [   26.003664][    C3] stack backtrace:
[   26.003849][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.003852][    C3] Call Trace:
[   26.003854][    C3]  <IRQ>
[   26.003855][    C3]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   26.003861][    C3]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[   26.003865][    C3]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   26.003869][    C3]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[   26.003871][    C3]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   26.003874][    C3]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   26.003877][    C3]  ? save_trace (kernel/locking/lockdep.c:589)
[   26.003879][    C3]  ? migrate_vma_insert_page.isra.0 (mm/migrate_device.c:1055)
[   26.003885][    C3]  mark_lock (kernel/locking/lockdep.c:4753)
[   26.003887][    C3]  mark_usage (kernel/locking/lockdep.c:4642)
[   26.003889][    C3]  __lock_acquire (kernel/locking/lockdep.c:5191)
[   26.003891][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   26.003894][    C3]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   26.003897][    C3]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   26.003900][    C3]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   26.003903][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   26.003905][    C3]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   26.003908][    C3]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[   26.003911][    C3]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   26.003913][    C3] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   26.003916][    C3]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[   26.003918][    C3]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   26.003920][    C3]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   26.003924][    C3]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   26.003928][    C3]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   26.003930][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   26.003932][    C3]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   26.003934][    C3]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   26.003937][    C3]  rcu_core (kernel/rcu/tree.c:2869)
[   26.003940][    C3]  handle_softirqs (kernel/softirq.c:622)
[   26.003942][    C3]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   26.003946][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   26.003948][    C3]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   26.003951][    C3]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   26.003953][    C3]  irq_exit_rcu (kernel/softirq.c:752)
[   26.003955][    C3]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   26.003958][    C3]  </IRQ>
[   26.003959][    C3]  <TASK>
[   26.003960][    C3]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   26.003963][    C3] RIP: 0010:debug_lockdep_rcu_enabled (kernel/rcu/update.c:320)
[   26.003966][    C3] Code: 2a fa ff ff 8b 44 24 04 eb 82 31 c0 e9 4e ff ff ff 66 2e 0f 1f 84 00 00 00 00 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
All code
========
   0:	2a fa                	sub    %dl,%bh
   2:	ff                   	(bad)
   3:	ff 8b 44 24 04 eb    	decl   -0x14fbdbbc(%rbx)
   9:	82                   	(bad)
   a:	31 c0                	xor    %eax,%eax
   c:	e9 4e ff ff ff       	jmp    0xffffffffffffff5f
  11:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  18:	00 00 00 
  1b:	0f 1f 00             	nopl   (%rax)
  1e:	f3 0f 1e fa          	endbr64
  22:	8b 05 b2 60 7d 01    	mov    0x17d60b2(%rip),%eax        # 0x17d60da
  28:	85 c0                	test   %eax,%eax
  2a:*	74 20                	je     0x4c		<-- trapping instruction
  2c:	8b 05 c0 71 7d 01    	mov    0x17d71c0(%rip),%eax        # 0x17d71f2
  32:	85 c0                	test   %eax,%eax
  34:	74 16                	je     0x4c
  36:	65 48 8b 05 10 87 00 	mov    %gs:0x2008710(%rip),%rax        # 0x200874e
  3d:	02 
  3e:	8b                   	.byte 0x8b
  3f:	80                   	.byte 0x80

Code starting with the faulting instruction
===========================================
   0:	74 20                	je     0x22
   2:	8b 05 c0 71 7d 01    	mov    0x17d71c0(%rip),%eax        # 0x17d71c8
   8:	85 c0                	test   %eax,%eax
   a:	74 16                	je     0x22
   c:	65 48 8b 05 10 87 00 	mov    %gs:0x2008710(%rip),%rax        # 0x2008724
  13:	02 
  14:	8b                   	.byte 0x8b
  15:	80                   	.byte 0x80
[   26.003969][    C3] RSP: 0018:ffa00000007a71f0 EFLAGS: 00000202
[   26.003972][    C3] RAX: 0000000000000002 RBX: 1ff40000000f4e48 RCX: ffa00000007a0001
[   26.003973][    C3] RDX: ffa00000007a8000 RSI: ffa00000007a7a68 RDI: ffa00000007a7308
[   26.003975][    C3] RBP: ffa00000007a7a98 R08: ffffffffbd190ba0 R09: ffffffffbcf4b42c
[   26.003976][    C3] R10: ffffffffb9b878aa R11: 0000000000000000 R12: ffa00000007a7a01
[   26.003977][    C3] R13: ffa00000007a72f8 R14: ff11000010462340 R15: 0000000000000000
[   26.003980][    C3]  ? vfs_open (fs/open.c:1079)
[   26.003985][    C3]  unwind_next_frame (./include/linux/rcupdate.h:867 ./include/linux/rcupdate.h:1181 arch/x86/kernel/unwind_orc.c:495)
[   26.003987][    C3]  ? do_dentry_open (fs/open.c:947)
[   26.003990][    C3]  ? stack_access_ok (./arch/x86/include/asm/stacktrace.h:55)
[   26.003993][    C3]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[   26.003996][    C3]  ? write_profile (profile.c:?)
[   26.003998][    C3]  arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   26.004004][    C3]  ? vfs_open (fs/open.c:1079)
[   26.004007][    C3]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   26.004010][    C3]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   26.004014][    C3]  kasan_save_stack (mm/kasan/common.c:57)
[   26.004018][    C3]  ? kasan_save_stack (mm/kasan/common.c:57)
[   26.004020][    C3]  ? kasan_save_track (mm/kasan/common.c:78)
[   26.004022][    C3]  ? __kasan_slab_alloc (mm/kasan/common.c:340 mm/kasan/common.c:366)
[   26.004024][    C3]  ? kmem_cache_alloc_noprof (./include/linux/kasan.h:253 mm/slub.c:4570 mm/slub.c:4899 mm/slub.c:4906)
[   26.004028][    C3]  ? __alloc_object (mm/kmemleak.c:483 (discriminator 1) mm/kmemleak.c:665 (discriminator 1))
[   26.004030][    C3]  ? __create_object (mm/kmemleak.c:779)
[   26.004031][    C3]  ? __kmalloc_cache_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4575 mm/slub.c:4899 mm/slub.c:5415)
[   26.004034][    C3]  ? fuse_file_alloc (./include/linux/slab.h:950 (discriminator 1) ./include/linux/slab.h:1188 (discriminator 1) fs/fuse/file.c:59 (discriminator 1))
[   26.004038][    C3]  ? fuse_file_open (fs/fuse/file.c:152)
[   26.004040][    C3]  ? fuse_open (fs/fuse/file.c:194 fs/fuse/file.c:283)
[   26.004042][    C3]  ? do_dentry_open (fs/open.c:947)
[   26.004044][    C3]  ? vfs_open (fs/open.c:1079)
[   26.004046][    C3]  ? backing_file_open (fs/backing-file.c:47)
[   26.004049][    C3]  ? ovl_open_realfile (fs/overlayfs/file.c:51 (discriminator 1))
[   26.004052][    C3]  ? ovl_open (fs/overlayfs/file.c:222)
[   26.004054][    C3]  ? do_dentry_open (fs/open.c:947)
[   26.004062][    C3]  kasan_save_track (mm/kasan/common.c:78)
[   26.004064][    C3]  __kasan_slab_alloc (mm/kasan/common.c:340 mm/kasan/common.c:366)
[   26.004067][    C3]  kmem_cache_alloc_noprof (./include/linux/kasan.h:253 mm/slub.c:4570 mm/slub.c:4899 mm/slub.c:4906)
[   26.004069][    C3]  ? do_file_open (fs/namei.c:771 fs/namei.c:4886)
[   26.004073][    C3]  ? __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   26.004076][    C3]  __alloc_object (mm/kmemleak.c:483 (discriminator 1) mm/kmemleak.c:665 (discriminator 1))
[   26.004078][    C3]  __create_object (mm/kmemleak.c:779)
[   26.004081][    C3]  __kmalloc_cache_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4575 mm/slub.c:4899 mm/slub.c:5415)
[   26.004085][    C3]  fuse_file_alloc (./include/linux/slab.h:950 (discriminator 1) ./include/linux/slab.h:1188 (discriminator 1) fs/fuse/file.c:59 (discriminator 1))
[   26.004087][    C3]  fuse_file_open (fs/fuse/file.c:152)
[   26.004090][    C3]  ? static_obj (kernel/locking/lockdep.c:859)
[   26.004093][    C3]  fuse_open (fs/fuse/file.c:194 fs/fuse/file.c:283)
[   26.004096][    C3]  ? fuse_finish_open (fs/fuse/file.c:234)
[   26.004099][    C3]  do_dentry_open (fs/open.c:947)
[   26.004103][    C3]  vfs_open (fs/open.c:1079)
[   26.004106][    C3]  ? 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)
[   26.004109][    C3]  backing_file_open (fs/backing-file.c:47)
[   26.004111][    C3]  ovl_open_realfile (fs/overlayfs/file.c:51 (discriminator 1))
[   26.004114][    C3]  ovl_open (fs/overlayfs/file.c:222)
[   26.004117][    C3]  ? ovl_llseek (fs/overlayfs/file.c:255)
[   26.004120][    C3]  ? 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)
[   26.004122][    C3]  ? ovl_llseek (fs/overlayfs/file.c:255)
[   26.004124][    C3]  do_dentry_open (fs/open.c:947)
[   26.004128][    C3]  vfs_open (fs/open.c:1079)
[   26.004131][    C3]  ? may_open (fs/namei.c:4276)
[   26.004133][    C3]  ? lookup_open.isra.0 (fs/namei.c:4504)
[   26.004136][    C3]  do_open (fs/namei.c:4699)
[   26.004138][    C3]  ? 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)
[   26.004141][    C3]  path_openat (fs/namei.c:4858)
[   26.004144][    C3]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[   26.004146][    C3]  ? kernel_tmpfile_open (fs/namei.c:4800)
[   26.004149][    C3]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   26.004151][    C3]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[   26.004154][    C3]  do_file_open (fs/namei.c:4887)
[   26.004157][    C3]  ? path_openat (./include/linux/mount.h:68 (discriminator 3))
[   26.004161][    C3]  ? page_get_link_raw (fs/namei.c:6328)
[   26.004165][    C3]  ? 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)
[   26.004167][    C3]  ? _raw_spin_unlock (./include/linux/spinlock_api_smp.h:169 (discriminator 1) kernel/locking/spinlock.c:190 (discriminator 1))
[   26.004170][    C3]  ? alloc_fd (./include/linux/spinlock.h:390 fs/file.c:611)
[   26.004173][    C3]  do_sys_openat2 (fs/open.c:1364 (discriminator 5))
[   26.004176][    C3]  ? build_open_flags (fs/open.c:1212)
[   26.004179][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   26.004182][    C3]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   26.004185][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   26.004188][    C3]  __x64_sys_openat (fs/open.c:1370 fs/open.c:1386 fs/open.c:1381 fs/open.c:1381)
[   26.004191][    C3]  ? fput_close_sync (fs/file_table.c:615)
[   26.004193][    C3]  ? __ia32_sys_open (fs/open.c:1374)
[   26.004196][    C3]  ? fpregs_restore_userregs (./include/linux/instrumented.h:97 ./include/asm-generic/bitops/instrumented-atomic.h:41 ./include/linux/thread_info.h:109 arch/x86/kernel/fpu/context.h:79)
[   26.004199][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   26.004201][    C3]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   26.004204][    C3]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   26.004206][    C3]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   26.004208][    C3]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   26.004211][    C3]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   26.004213][    C3] RIP: 0033:0x7fd444319625
[   26.004216][    C3] 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)
[   26.004217][    C3] RSP: 002b:00007ffdde442500 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
[   26.004220][    C3] RAX: ffffffffffffffda RBX: 00007ffdde442790 RCX: 00007fd444319625
[   26.004221][    C3] RDX: 0000000000080000 RSI: 00007ffdde442580 RDI: 00000000ffffff9c
[   26.004223][    C3] RBP: 00007ffdde442500 R08: 00007ffdde442777 R09: 0000000000000000
[   26.004224][    C3] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffdde442580


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