======================================
| [   29.616117][    C3]  #1: ffffffff91b77d20 (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))
| [   29.616367][    C3]  #2: ffffffff91b77c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   29.616616][    C3]
| [   29.616616][    C3] stack backtrace:
[   29.616791][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   29.616793][    C3] Call Trace:
[   29.616795][    C3]  <IRQ>
[   29.616797][    C3]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   29.616803][    C3]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[   29.616807][    C3]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   29.616811][    C3]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[   29.616814][    C3]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   29.616817][    C3]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   29.616820][    C3]  ? save_trace (kernel/locking/lockdep.c:589)
[   29.616822][    C3]  ? kernel_pgtable_work_func (mm/pgtable-generic.c:436)
[   29.616826][    C3]  mark_lock (kernel/locking/lockdep.c:4753)
[   29.616829][    C3]  mark_usage (kernel/locking/lockdep.c:4642)
[   29.616831][    C3]  __lock_acquire (kernel/locking/lockdep.c:5191)
[   29.616834][    C3]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   29.616836][    C3]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   29.616840][    C3]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   29.616842][    C3]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   29.616846][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.616848][    C3]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   29.616851][    C3]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[   29.616854][    C3]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   29.616856][    C3] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   29.616859][    C3]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[   29.616862][    C3]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   29.616864][    C3]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   29.616868][    C3]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   29.616872][    C3]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   29.616874][    C3]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   29.616876][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.616879][    C3]  rcu_core (kernel/rcu/tree.c:2869)
[   29.616882][    C3]  handle_softirqs (kernel/softirq.c:622)
[   29.616885][    C3]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.616889][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   29.616891][    C3]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   29.616894][    C3]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   29.616896][    C3]  irq_exit_rcu (kernel/softirq.c:752)
[   29.616899][    C3]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   29.616901][    C3]  </IRQ>
[   29.616902][    C3]  <TASK>
[   29.616903][    C3]  ? init_data_structures_once.part.0 (kernel/locking/lockdep.c:3397 (discriminator 1) kernel/locking/lockdep.c:3438 (discriminator 1) kernel/locking/lockdep.c:3482 (discriminator 1) kernel/locking/lockdep.c:1210 (discriminator 1))
[   29.616906][    C3]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   29.616908][    C3] RIP: 0010:lock_acquire.part.0 (./arch/x86/include/asm/irqflags.h:158 (discriminator 1) kernel/locking/lockdep.c:5871 (discriminator 1))
[   29.616912][    C3] 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
[   29.616914][    C3] RSP: 0018:ffa0000000757448 EFLAGS: 00000206
[   29.616917][    C3] RAX: 0000000000000046 RBX: 0000000000000000 RCX: b3920c865c501c38
[   29.616919][    C3] RDX: 0000000000000001 RSI: ffffffff915ebde8 RDI: ffffffff9106f6c0
[   29.616921][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ff11000010bcd158
[   29.616923][    C3] R10: 0000000000000200 R11: 0000000000000001 R12: ffffffff91b77d20
[   29.616924][    C3] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[   29.616928][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.616931][    C3]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   29.616933][    C3]  ? __put_anon_vma (mm/rmap.c:137 mm/rmap.c:2917)
[   29.616936][    C3]  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))
[   29.616938][    C3]  ? 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))
[   29.616940][    C3]  ? do_group_exit (kernel/exit.c:1119)
[   29.616943][    C3]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   29.616945][    C3]  ? stack_access_ok (./arch/x86/include/asm/stacktrace.h:55)
[   29.616948][    C3]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[   29.616950][    C3]  ? write_profile (profile.c:?)
[   29.616953][    C3]  arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   29.616958][    C3]  ? do_group_exit (kernel/exit.c:1119)
[   29.616961][    C3]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   29.616964][    C3]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   29.616966][    C3]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   29.616969][    C3]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   29.616973][    C3]  kasan_save_stack (mm/kasan/common.c:57)
[   29.616976][    C3]  ? kasan_save_stack (mm/kasan/common.c:57)
[   29.616979][    C3]  ? kasan_record_aux_stack (mm/kasan/generic.c:556)
[   29.616981][    C3]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3131)
[   29.616983][    C3]  ? kmem_cache_free (./include/linux/kmemleak.h:50 mm/slub.c:2614 mm/slub.c:6251 mm/slub.c:6378)
[   29.616987][    C3]  ? __put_anon_vma (mm/rmap.c:137 mm/rmap.c:2917)
[   29.616989][    C3]  ? unlink_anon_vmas (mm/internal.h:216 mm/rmap.c:536)
[   29.616991][    C3]  ? free_pgtables (mm/memory.c:414)
[   29.616994][    C3]  ? exit_mmap (mm/mmap.c:1312)
[   29.616997][    C3]  ? mmput (kernel/fork.c:1178 kernel/fork.c:1201)
[   29.616999][    C3]  ? exit_mm (kernel/exit.c:582)
[   29.617002][    C3]  ? do_exit (kernel/exit.c:964)
[   29.617004][    C3]  ? do_group_exit (kernel/exit.c:1119)
[   29.617012][    C3]  kasan_record_aux_stack (mm/kasan/generic.c:556)
[   29.617014][    C3]  ? __remove_object (mm/kmemleak.c:609)
[   29.617017][    C3]  __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3131)
[   29.617019][    C3]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   29.617022][    C3]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   29.617024][    C3]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   29.617027][    C3]  kmem_cache_free (./include/linux/kmemleak.h:50 mm/slub.c:2614 mm/slub.c:6251 mm/slub.c:6378)
[   29.617030][    C3]  __put_anon_vma (mm/rmap.c:137 mm/rmap.c:2917)
[   29.617033][    C3]  unlink_anon_vmas (mm/internal.h:216 mm/rmap.c:536)
[   29.617037][    C3]  free_pgtables (mm/memory.c:414)
[   29.617041][    C3]  ? free_pgd_range (mm/memory.c:351)
[   29.617043][    C3]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   29.617046][    C3]  ? rwsem_down_write_slowpath (./include/linux/list.h:159)
[   29.617050][    C3]  exit_mmap (mm/mmap.c:1312)
[   29.617053][    C3]  ? vm_brk_flags (./include/linux/seqlock.h:453)
[   29.617056][    C3]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   29.617058][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.617062][    C3]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   29.617066][    C3]  ? __mutex_unlock_slowpath (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:4480 kernel/locking/mutex.c:1007)
[   29.617072][    C3]  mmput (kernel/fork.c:1178 kernel/fork.c:1201)
[   29.617075][    C3]  exit_mm (kernel/exit.c:582)
[   29.617077][    C3]  ? unwind_deferred_task_exit (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/unwind/deferred.c:56 kernel/unwind/deferred.c:196)
[   29.617080][    C3]  do_exit (kernel/exit.c:964)
[   29.617083][    C3]  ? exit_notify (kernel/exit.c:748)
[   29.617085][    C3]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   29.617088][    C3]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   29.617091][    C3]  do_group_exit (kernel/exit.c:1119)
[   29.617094][    C3]  __x64_sys_exit_group (kernel/exit.c:1130 kernel/exit.c:1128 kernel/exit.c:1128)
[   29.617096][    C3]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   29.617099][    C3]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   29.617100][    C3]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   29.617104][    C3]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   29.617107][    C3]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   29.617109][    C3] RIP: 0033:0x7f294c9512b8
[   29.617112][    C3] Code: Unable to access opcode bytes at 0x7f294c95128e.

Code starting with the faulting instruction
===========================================
[   29.617113][    C3] RSP: 002b:00007ffff530c508 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   29.617116][    C3] RAX: ffffffffffffffda RBX: 00007f294ca82f88 RCX: 00007f294c9512b8
[   29.617117][    C3] RDX: 00007f294c88ee88 RSI: ffffffffffffffb0 RDI: 0000000000000000
[   29.617119][    C3] RBP: 00007ffff530c560 R08: 0000000000000000 R09: 0000000000000030
[   29.617120][    C3] R10: 00007ffff530c3a0 R11: 0000000000000246 R12: 0000000000000001


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