======================================
| [  714.581211][    C2]  #1: ffffffff9d777d20 (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))
| [  714.581441][    C2]  #2: ffffffff9d777c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [  714.581610][    C2]
| [  714.581610][    C2] stack backtrace:
[  714.581837][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  714.581839][    C2] Call Trace:
[  714.581841][    C2]  <IRQ>
[  714.581843][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  714.581848][    C2]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[  714.581850][    C2]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  714.581854][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[  714.581855][    C2]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  714.581858][    C2]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  714.581860][    C2]  ? save_trace (kernel/locking/lockdep.c:589)
[  714.581861][    C2]  ? calculate_order (./include/asm-generic/getorder.h:41 mm/slub.c:7520)
[  714.581865][    C2]  mark_lock (kernel/locking/lockdep.c:4753)
[  714.581867][    C2]  mark_usage (kernel/locking/lockdep.c:4642)
[  714.581868][    C2]  __lock_acquire (kernel/locking/lockdep.c:5191)
[  714.581870][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  714.581871][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  714.581874][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  714.581875][    C2]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  714.581877][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  714.581879][    C2]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  714.581881][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[  714.581883][    C2]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  714.581885][    C2] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  714.581887][    C2]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[  714.581889][    C2]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  714.581890][    C2]  rcu_do_batch (kernel/rcu/tree.c:2617)
[  714.581893][    C2]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[  714.581895][    C2]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  714.581897][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  714.581898][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[  714.581900][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[  714.581902][    C2]  rcu_core (kernel/rcu/tree.c:2869)
[  714.581904][    C2]  handle_softirqs (kernel/softirq.c:622)
[  714.581906][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  714.581909][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  714.581910][    C2]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  714.581912][    C2]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[  714.581914][    C2]  irq_exit_rcu (kernel/softirq.c:752)
[  714.581915][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  714.581917][    C2]  </IRQ>
[  714.581918][    C2]  <TASK>
[  714.581919][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  714.581920][    C2] RIP: 0010:lock_acquire.part.0 (./arch/x86/include/asm/irqflags.h:158 (discriminator 1) kernel/locking/lockdep.c:5871 (discriminator 1))
[  714.581922][    C2] Code: ff 65 0f c1 05 37 d9 33 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 a9 92 33 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 37 d9 33 04 83 	roll   $0x83,0x433d937(%rip)        # 0x433d941
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 a9 92 33 	sub    %gs:0x43392a9(%rip),%rax        # 0x43392e0
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 a9 92 33 	sub    %gs:0x43392a9(%rip),%rax        # 0x43392b6
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[  714.581924][    C2] RSP: 0018:ffa0000000517138 EFLAGS: 00000206
[  714.581926][    C2] RAX: 0000000000000046 RBX: 0000000000000000 RCX: b3920c865c501c38
[  714.581928][    C2] RDX: 0000000000000001 RSI: ffffffff9d1ebde8 RDI: ffffffff9cc6f6c0
[  714.581929][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ff1100000c8dd158
[  714.581929][    C2] R10: 0000000000000200 R11: 0000000000000001 R12: ffffffff9d777d20
[  714.581930][    C2] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  714.581933][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  714.581934][    C2]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  714.581936][    C2]  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))
[  714.581938][    C2]  ? 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))
[  714.581939][    C2]  ? ksys_mmap_pgoff (mm/mmap.c:606)
[  714.581942][    C2]  ? kmem_cache_alloc_noprof (./include/linux/kasan.h:253 mm/slub.c:4570 mm/slub.c:4899 mm/slub.c:4906)
[  714.581944][    C2]  ? stack_access_ok (./arch/x86/include/asm/stacktrace.h:55)
[  714.581945][    C2]  ? kmem_cache_free (./include/linux/slab.h:950 (discriminator 1) mm/slub.c:2641 (discriminator 1) mm/slub.c:6251 (discriminator 1) mm/slub.c:6378 (discriminator 1))
[  714.581948][    C2]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[  714.581949][    C2]  ? write_profile (profile.c:?)
[  714.581952][    C2]  arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[  714.581955][    C2]  ? ksys_mmap_pgoff (mm/mmap.c:606)
[  714.581958][    C2]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[  714.581960][    C2]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  714.581963][    C2]  set_track_prepare (mm/slub.c:1038)
[  714.581966][    C2]  ? __kmalloc_cache_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4575 mm/slub.c:4899 mm/slub.c:5415)
[  714.581967][    C2]  ? kmem_cache_free (./include/linux/slab.h:950 (discriminator 1) mm/slub.c:2641 (discriminator 1) mm/slub.c:6251 (discriminator 1) mm/slub.c:6378 (discriminator 1))
[  714.581969][    C2]  ? vms_complete_munmap_vmas (mm/vma.c:1361)
[  714.581971][    C2]  ? __mmap_region (mm/vma.c:2617 mm/vma.c:2780)
[  714.581973][    C2]  ? mmap_region (mm/vma.c:2857)
[  714.581974][    C2]  ? do_mmap (mm/mmap.c:560)
[  714.581975][    C2]  ? vm_mmap_pgoff (mm/util.c:581)
[  714.581977][    C2]  ? ksys_mmap_pgoff (mm/mmap.c:606)
[  714.581979][    C2]  __alloc_object (mm/kmemleak.c:701)
[  714.581981][    C2]  __create_object (mm/kmemleak.c:779)
[  714.581983][    C2]  __kmalloc_cache_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4575 mm/slub.c:4899 mm/slub.c:5415)
[  714.581985][    C2]  ? vms_complete_munmap_vmas (mm/vma.c:1361)
[  714.581986][    C2]  kmem_cache_free (./include/linux/slab.h:950 (discriminator 1) mm/slub.c:2641 (discriminator 1) mm/slub.c:6251 (discriminator 1) mm/slub.c:6378 (discriminator 1))
[  714.581988][    C2]  ? fput (./include/linux/preempt.h:468 ./include/linux/file_ref.h:150 fs/file_table.c:586)
[  714.581991][    C2]  vms_complete_munmap_vmas (mm/vma.c:1361)
[  714.581993][    C2]  ? __mmap_new_vma (./include/linux/fs.h:523 mm/vma.c:1840 mm/vma.c:2585)
[  714.581994][    C2]  ? perf_event_mmap (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 kernel/events/core.c:9932)
[  714.581997][    C2]  ? __mmap_new_vma (mm/vma.h:615 mm/vma.h:623 mm/vma.c:2583)
[  714.582000][    C2]  ? vma_set_page_prot (mm/mmap.c:87)
[  714.582002][    C2]  __mmap_region (mm/vma.c:2617 mm/vma.c:2780)
[  714.582004][    C2]  ? vma_merge_new_range (mm/vma.c:1083)
[  714.582005][    C2]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  714.582007][    C2]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  714.582009][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  714.582010][    C2]  ? init_data_structures_once.part.0 (kernel/locking/lockdep.c:3378 kernel/locking/lockdep.c:3437 kernel/locking/lockdep.c:3482 kernel/locking/lockdep.c:1210)
[  714.582016][    C2]  ? mas_prev (lib/maple_tree.c:5211 lib/maple_tree.c:5204)
[  714.582022][    C2]  ? vm_unmapped_area (./include/trace/events/mmap.h:10 (discriminator 22) mm/mmap.c:674 (discriminator 22))
[  714.582024][    C2]  ? perf_trace_mm_lru_insertion (./include/trace/events/pagemap.h:28)
[  714.582027][    C2]  ? arch_get_unmapped_area_topdown (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/thread_info.h:133 arch/x86/kernel/sys_x86_64.c:177)
[  714.582030][    C2]  mmap_region (mm/vma.c:2857)
[  714.582032][    C2]  ? mm_take_all_locks (mm/vma.c:2266 (discriminator 1))
[  714.582033][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  714.582036][    C2]  ? __get_unmapped_area (./include/linux/security.h:1187 mm/mmap.c:863)
[  714.582038][    C2]  ? ovl_file_end_write (./include/linux/fs.h:1353)
[  714.582041][    C2]  do_mmap (mm/mmap.c:560)
[  714.582044][    C2]  ? __ia32_sys_brk (mm/mmap.c:116)
[  714.582046][    C2]  ? down_write_killable (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:4457 kernel/locking/rwsem.c:268 kernel/locking/rwsem.c:1346 kernel/locking/rwsem.c:1361 kernel/locking/rwsem.c:1639)
[  714.582048][    C2]  ? down_write (kernel/locking/rwsem.c:1627)
[  714.582050][    C2]  vm_mmap_pgoff (mm/util.c:581)
[  714.582052][    C2]  ? randomize_page (mm/util.c:387)
[  714.582054][    C2]  ? __fget_files (./include/linux/rcupdate.h:871 fs/file.c:1101)
[  714.582057][    C2]  ksys_mmap_pgoff (mm/mmap.c:606)
[  714.582059][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  714.582061][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  714.582063][    C2]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[  714.582064][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  714.582065][    C2]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  714.582068][    C2]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  714.582070][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  714.582071][    C2] RIP: 0033:0x7f0aeba3e85c
[  714.582074][    C2] Code: 1e fa 41 f7 c1 ff 0f 00 00 75 33 55 48 89 e5 41 54 41 89 cc 53 48 89 fb 48 85 ff 74 51 45 89 e2 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 24 5b 41 5c 5d c3 0f 1f 80 00 00 00 00 c7 05
All code
========
   0:	1e                   	(bad)
   1:	fa                   	cli
   2:	41 f7 c1 ff 0f 00 00 	test   $0xfff,%r9d
   9:	75 33                	jne    0x3e
   b:	55                   	push   %rbp
   c:	48 89 e5             	mov    %rsp,%rbp
   f:	41 54                	push   %r12
  11:	41 89 cc             	mov    %ecx,%r12d
  14:	53                   	push   %rbx
  15:	48 89 fb             	mov    %rdi,%rbx
  18:	48 85 ff             	test   %rdi,%rdi
  1b:	74 51                	je     0x6e
  1d:	45 89 e2             	mov    %r12d,%r10d
  20:	48 89 df             	mov    %rbx,%rdi
  23:	b8 09 00 00 00       	mov    $0x9,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 24                	ja     0x56
  32:	5b                   	pop    %rbx
  33:	41 5c                	pop    %r12
  35:	5d                   	pop    %rbp
  36:	c3                   	ret
  37:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3e:	c7                   	.byte 0xc7
  3f:	05                   	.byte 0x5

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 24                	ja     0x2c
   8:	5b                   	pop    %rbx
   9:	41 5c                	pop    %r12
   b:	5d                   	pop    %rbp
   c:	c3                   	ret
   d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  14:	c7                   	.byte 0xc7
  15:	05                   	.byte 0x5
[  714.582075][    C2] RSP: 002b:00007fffc9637d50 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
[  714.582077][    C2] RAX: ffffffffffffffda RBX: 00007f0aeb9d5000 RCX: 00007f0aeba3e85c
[  714.582077][    C2] RDX: 0000000000000003 RSI: 0000000000004000 RDI: 00007f0aeb9d5000
[  714.582078][    C2] RBP: 00007fffc9637d60 R08: 0000000000000005 R09: 0000000000069000
[  714.582079][    C2] R10: 0000000000000812 R11: 0000000000000206 R12: 0000000000000812


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