======================================
| [   17.578970][    C1] 1 lock held by swapper/1/0:
| [   17.579268][    C1]  #0: ffffffff8e377c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   17.579507][    C1] Preemption disabled at:
| [   17.579509][    C1] 0x0
[   17.579737][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.579739][    C1] Call Trace:
[   17.579740][    C1]  <IRQ>
[   17.579742][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.579749][    C1]  __might_resched.cold (kernel/sched/core.c:9163)
[   17.579752][    C1]  ? default_idle_call (kernel/sched/idle.c:122)
[   17.579757][    C1]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   17.579761][    C1]  ? start_secondary (arch/x86/kernel/smpboot.c:312)
[   17.579766][    C1]  __mutex_lock (kernel/locking/mutex.c:623 kernel/locking/mutex.c:820)
[   17.579768][    C1]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   17.579771][    C1]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.579776][    C1]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   17.579777][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   17.579784][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   17.579788][    C1]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.579790][    C1]  __tcf_chain_put (net/sched/cls_api.c:694)
[   17.579792][    C1]  ? free_percpu.part.0 (./include/linux/spinlock.h:408 (discriminator 3) mm/percpu.c:2283 (discriminator 3))
[   17.579798][    C1]  tcf_action_rcu_free (net/sched/act_api.c:130 net/sched/act_api.c:370 net/sched/act_api.c:378)
[   17.579800][    C1]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   17.579802][    C1]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   17.579807][    C1]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   17.579810][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.579813][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.579816][    C1]  ? trace_irq_disable.constprop.0 (./include/trace/events/preemptirq.h:36 (discriminator 22))
[   17.579818][    C1]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   17.579819][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   17.579823][    C1]  rcu_core (kernel/rcu/tree.c:2869)
[   17.579826][    C1]  handle_softirqs (kernel/softirq.c:622)
[   17.579829][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   17.579833][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   17.579835][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   17.579839][    C1]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   17.579841][    C1]  irq_exit_rcu (kernel/softirq.c:752)
[   17.579842][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   17.579845][    C1]  </IRQ>
[   17.579845][    C1]  <TASK>
[   17.579846][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.579848][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   17.579851][    C1] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:62)
[   17.579853][    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
[   17.579855][    C1] RSP: 0018:ffa0000000147de8 EFLAGS: 00000296
[   17.579857][    C1] RAX: 000000000009eed9 RBX: ff11000001bb2340 RCX: ffffffff8b0d9667
[   17.579859][    C1] RDX: ff11000001bb2340 RSI: ffffffff8de01bcb RDI: ffffffff8d86f6c0
[   17.579859][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   17.579860][    C1] R10: 0000000000000001 R11: 0000000000000001 R12: 1ff4000000028fc0
[   17.579861][    C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   17.579865][    C1]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   17.579869][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   17.579871][    C1]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:767)
[   17.579873][    C1]  default_idle_call (kernel/sched/idle.c:122)
[   17.579875][    C1]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   17.579877][    C1]  ? arch_cpu_idle_exit+0x40/0x40
[   17.579879][    C1]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   17.579881][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.579885][    C1]  do_idle (kernel/sched/idle.c:352)
[   17.579887][    C1]  cpu_startup_entry (kernel/sched/idle.c:451)
[   17.579889][    C1]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   17.579891][    C1]  ? set_cpu_sibling_map (./arch/x86/include/asm/smp.h:148 (discriminator 4))
[   17.579896][    C1]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   17.585833][    C1] 1 lock held by swapper/1/0:
| [   17.585912][    C1]  #0: ffffffff8e377c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   17.586063][    C1] stack backtrace:
| [   17.586130][    C1] Tainted: [W]=WARN
[   17.586130][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.586131][    C1] Call Trace:
[   17.586132][    C1]  <IRQ>
[   17.586133][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.586136][    C1]  __lock_acquire.cold (kernel/locking/lockdep.c:4830 kernel/locking/lockdep.c:4902 kernel/locking/lockdep.c:5187)
[   17.586139][    C1]  ? common_startup_64 (arch/x86/kernel/head_64.S:418)
[   17.586140][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.586142][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   17.586144][    C1]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.586146][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.586148][    C1]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   17.586149][    C1]  __mutex_lock (kernel/locking/mutex.c:646 kernel/locking/mutex.c:820)
[   17.586151][    C1]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.586153][    C1]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.586155][    C1]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   17.586156][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   17.586158][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   17.586160][    C1]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.586162][    C1]  __tcf_chain_put (net/sched/cls_api.c:694)
[   17.586163][    C1]  ? free_percpu.part.0 (./include/linux/spinlock.h:408 (discriminator 3) mm/percpu.c:2283 (discriminator 3))
[   17.586166][    C1]  tcf_action_rcu_free (net/sched/act_api.c:130 net/sched/act_api.c:370 net/sched/act_api.c:378)
[   17.586167][    C1]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   17.586169][    C1]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   17.586172][    C1]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   17.586174][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.586175][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.586177][    C1]  ? trace_irq_disable.constprop.0 (./include/trace/events/preemptirq.h:36 (discriminator 22))
[   17.586178][    C1]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   17.586180][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   17.586182][    C1]  rcu_core (kernel/rcu/tree.c:2869)
[   17.586183][    C1]  handle_softirqs (kernel/softirq.c:622)
[   17.586185][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   17.586187][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   17.586189][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   17.586191][    C1]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   17.586192][    C1]  irq_exit_rcu (kernel/softirq.c:752)
[   17.586193][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   17.586195][    C1]  </IRQ>
[   17.586196][    C1]  <TASK>
[   17.586196][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.586198][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   17.586199][    C1] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:62)
[   17.586201][    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
[   17.586202][    C1] RSP: 0018:ffa0000000147de8 EFLAGS: 00000296
[   17.586203][    C1] RAX: 000000000009eed9 RBX: ff11000001bb2340 RCX: ffffffff8b0d9667
[   17.586204][    C1] RDX: ff11000001bb2340 RSI: ffffffff8de01bcb RDI: ffffffff8d86f6c0
[   17.586205][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   17.586206][    C1] R10: 0000000000000001 R11: 0000000000000001 R12: 1ff4000000028fc0
[   17.586206][    C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   17.586208][    C1]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   17.586210][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   17.586212][    C1]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:767)
[   17.586213][    C1]  default_idle_call (kernel/sched/idle.c:122)
[   17.586215][    C1]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   17.586216][    C1]  ? arch_cpu_idle_exit+0x40/0x40
[   17.586218][    C1]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   17.586219][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.586221][    C1]  do_idle (kernel/sched/idle.c:352)
[   17.586223][    C1]  cpu_startup_entry (kernel/sched/idle.c:451)
[   17.586224][    C1]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   17.586225][    C1]  ? set_cpu_sibling_map (./arch/x86/include/asm/smp.h:148 (discriminator 4))


Finger prints:
__mutex_lock:__tcf_chain_put:tcf_action_rcu_free:rcu_do_batch:rcu_core