======================================
| [   49.927997][    C1] 1 lock held by swapper/1/0:
| [   49.928082][    C1]  #0: ffffffffa3577c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   49.928239][    C1]
| [   49.928239][    C1] stack backtrace:
[   49.928350][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   49.928352][    C1] Call Trace:
[   49.928353][    C1]  <IRQ>
[   49.928355][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   49.928360][    C1]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[   49.928362][    C1]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   49.928366][    C1]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[   49.928367][    C1]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   49.928369][    C1]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   49.928371][    C1]  ? save_trace (kernel/locking/lockdep.c:589)
[   49.928373][    C1]  mark_lock (kernel/locking/lockdep.c:4753)
[   49.928375][    C1]  mark_usage (kernel/locking/lockdep.c:4642)
[   49.928377][    C1]  __lock_acquire (kernel/locking/lockdep.c:5191)
[   49.928378][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.928380][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   49.928384][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   49.928385][    C1]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   49.928387][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.928389][    C1]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   49.928391][    C1]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[   49.928393][    C1]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   49.928394][    C1] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[   49.928396][    C1]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[   49.928398][    C1]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   49.928399][    C1]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   49.928401][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   49.928403][    C1]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   49.928405][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   49.928407][    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)
[   49.928408][    C1]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   49.928410][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.928411][    C1]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   49.928413][    C1]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   49.928415][    C1]  rcu_core (kernel/rcu/tree.c:2869)
[   49.928417][    C1]  handle_softirqs (kernel/softirq.c:622)
[   49.928418][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   49.928421][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   49.928423][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   49.928425][    C1]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   49.928426][    C1]  irq_exit_rcu (kernel/softirq.c:752)
[   49.928428][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   49.928429][    C1]  </IRQ>
[   49.928430][    C1]  <TASK>
[   49.928431][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.928432][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   49.928434][    C1] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:62)
[   49.928436][    C1] Code: 48 8b 3d 44 d3 00 02 e8 1f 00 00 00 48 2b 05 c8 71 a3 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 43 f4 22 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 44 d3 00 02 	mov    0x200d344(%rip),%rdi        # 0x200d34b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 c8 71 a3 00 	sub    0xa371c8(%rip),%rax        # 0xa371db
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 43 f4 22 00 	verw   0x22f443(%rip)        # 0x22f46b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   49.928438][    C1] RSP: 0018:ffa0000000147de8 EFLAGS: 00000296
[   49.928440][    C1] RAX: 0000000000120b87 RBX: ff11000001bb2340 RCX: ffffffffa02d9667
[   49.928442][    C1] RDX: ff11000001bb2340 RSI: ffffffffa3001bcb RDI: ffffffffa2a6f6c0
[   49.928443][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   49.928444][    C1] R10: 0000000000000001 R11: 0000000000000001 R12: 1ff4000000028fc0
[   49.928445][    C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   49.928446][    C1]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   49.928449][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   49.928451][    C1]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:767)
[   49.928453][    C1]  default_idle_call (kernel/sched/idle.c:122)
[   49.928454][    C1]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   49.928456][    C1]  ? arch_cpu_idle_exit+0x40/0x40
[   49.928457][    C1]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   49.928460][    C1]  ? debug_smp_processor_id (lib/smp_processor_id.c:57)
[   49.928462][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   49.928463][    C1]  do_idle (kernel/sched/idle.c:352)
[   49.928465][    C1]  cpu_startup_entry (kernel/sched/idle.c:451)
[   49.928467][    C1]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   49.928468][    C1]  ? set_cpu_sibling_map (./arch/x86/include/asm/smp.h:148 (discriminator 4))
[   49.928470][    C1]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   56.479412][    C1] RCU nest depth: 0, expected: 0
| [   56.479490][    C1] INFO: lockdep is turned off.
| [   56.479567][    C1] Preemption disabled at:
| [   56.479568][    C1] handle_softirqs (kernel/softirq.c:463 (discriminator 1) kernel/softirq.c:598 (discriminator 1))
[   56.479736][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   56.479738][    C1] Call Trace:
[   56.479740][    C1]  <TASK>
[   56.479741][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   56.479746][    C1]  ? handle_softirqs (kernel/softirq.c:463 (discriminator 1) kernel/softirq.c:598 (discriminator 1))
[   56.479748][    C1]  __might_resched.cold (kernel/sched/core.c:9163)
[   56.479752][    C1]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   56.479756][    C1]  __mutex_lock (kernel/locking/mutex.c:623 kernel/locking/mutex.c:820)
[   56.479760][    C1]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   56.479764][    C1]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   56.479767][    C1]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   56.479768][    C1]  __tcf_chain_put (net/sched/cls_api.c:694)
[   56.479770][    C1]  ? free_percpu.part.0 (./include/linux/spinlock.h:408 (discriminator 3) mm/percpu.c:2283 (discriminator 3))
[   56.479774][    C1]  tcf_action_rcu_free (net/sched/act_api.c:130 net/sched/act_api.c:370 net/sched/act_api.c:378)
[   56.479776][    C1]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   56.479779][    C1]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   56.479782][    C1]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   56.479784][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   56.479786][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   56.479789][    C1]  ? trace_irq_disable.constprop.0 (./include/trace/events/preemptirq.h:36 (discriminator 22))
[   56.479791][    C1]  rcu_core (kernel/rcu/tree.c:2869)
[   56.479793][    C1]  handle_softirqs (kernel/softirq.c:622)
[   56.479794][    C1]  ? clockevents_tick_resume (kernel/time/clockevents.c:193)
[   56.479797][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   56.479799][    C1]  ? lock_release (./include/trace/events/lock.h:69 (discriminator 22) kernel/locking/lockdep.c:5879 (discriminator 22))
[   56.479801][    C1]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   56.479803][    C1]  irq_exit_rcu (kernel/softirq.c:752)
[   56.479804][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 16) arch/x86/kernel/apic/apic.c:1061 (discriminator 16))
[   56.479807][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   56.479809][    C1] RIP: 0033:0x7f681684c238
[   56.479812][    C1] Code: 00 00 f3 0f 1e fa 55 48 89 e5 53 48 89 fb 48 83 ec 18 66 83 3d bc 58 25 00 00 48 8b 47 08 74 0c eb 38 66 83 3d ac 58 25 00 00 <75> 2e 48 89 df ff 50 10 48 89 43 08 48 85 c0 75 e7 8b 83 4c 05 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	f3 0f 1e fa          	endbr64
   6:	55                   	push   %rbp
   7:	48 89 e5             	mov    %rsp,%rbp
   a:	53                   	push   %rbx
   b:	48 89 fb             	mov    %rdi,%rbx
   e:	48 83 ec 18          	sub    $0x18,%rsp
  12:	66 83 3d bc 58 25 00 	cmpw   $0x0,0x2558bc(%rip)        # 0x2558d6
  19:	00 
  1a:	48 8b 47 08          	mov    0x8(%rdi),%rax
  1e:	74 0c                	je     0x2c
  20:	eb 38                	jmp    0x5a
  22:	66 83 3d ac 58 25 00 	cmpw   $0x0,0x2558ac(%rip)        # 0x2558d6
  29:	00 
  2a:*	75 2e                	jne    0x5a		<-- trapping instruction
  2c:	48 89 df             	mov    %rbx,%rdi
  2f:	ff 50 10             	call   *0x10(%rax)
  32:	48 89 43 08          	mov    %rax,0x8(%rbx)
  36:	48 85 c0             	test   %rax,%rax
  39:	75 e7                	jne    0x22
  3b:	8b                   	.byte 0x8b
  3c:	83                   	.byte 0x83
  3d:	4c                   	rex.WR
  3e:	05                   	.byte 0x5
	...

Code starting with the faulting instruction
===========================================
   0:	75 2e                	jne    0x30
   2:	48 89 df             	mov    %rbx,%rdi
   5:	ff 50 10             	call   *0x10(%rax)
   8:	48 89 43 08          	mov    %rax,0x8(%rbx)
   c:	48 85 c0             	test   %rax,%rax
   f:	75 e7                	jne    0xfffffffffffffff8
  11:	8b                   	.byte 0x8b
  12:	83                   	.byte 0x83
  13:	4c                   	rex.WR
  14:	05                   	.byte 0x5
	...
[   56.479814][    C1] RSP: 002b:00007ffe115114d0 EFLAGS: 00000246
[   56.479818][    C1] RAX: 000055880e249f90 RBX: 000055880e0ef010 RCX: 000055880e128241
[   56.479819][    C1] RDX: 000055880e24a258 RSI: 000055880e10f980 RDI: 000055880e0ef010
[   56.479820][    C1] RBP: 00007ffe115114f0 R08: 0000000000000000 R09: 0000000000000000
[   56.479821][    C1] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe115117b8


Finger prints:
handle_softirqs:dump_stack_lvl:__mutex_lock:__tcf_chain_put:tcf_action_rcu_free
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock