======================================
| [   17.011480][    C0] 1 lock held by swapper/0/0:
| [   17.011628][    C0]  #0: ffffffffad177c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   17.011893][    C0] Preemption disabled at:
| [   17.011895][    C0] schedule_preempt_disabled (kernel/sched/core.c:7341)
[   17.012226][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.012228][    C0] Call Trace:
[   17.012230][    C0]  <IRQ>
[   17.012231][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.012238][    C0]  ? schedule_preempt_disabled (kernel/sched/core.c:7341)
[   17.012240][    C0]  __might_resched.cold (kernel/sched/core.c:9163)
[   17.012243][    C0]  ? default_idle_call (kernel/sched/idle.c:122)
[   17.012247][    C0]  ? perf_trace_sched_switch (./include/linux/list.h:1021 (discriminator 3))
[   17.012250][    C0]  ? rest_init (init/main.c:762)
[   17.012253][    C0]  ? x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   17.012258][    C0]  ? x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   17.012259][    C0]  ? common_startup_64 (arch/x86/kernel/head_64.S:418)
[   17.012264][    C0]  __mutex_lock (kernel/locking/mutex.c:623 kernel/locking/mutex.c:820)
[   17.012266][    C0]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   17.012269][    C0]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.012274][    C0]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   17.012276][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   17.012281][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   17.012286][    C0]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.012288][    C0]  __tcf_chain_put (net/sched/cls_api.c:694)
[   17.012290][    C0]  ? free_percpu.part.0 (./include/linux/spinlock.h:408 (discriminator 3) mm/percpu.c:2283 (discriminator 3))
[   17.012296][    C0]  tcf_action_rcu_free (net/sched/act_api.c:130 net/sched/act_api.c:370 net/sched/act_api.c:378)
[   17.012298][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   17.012300][    C0]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   17.012305][    C0]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   17.012308][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.012312][    C0]  ? 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)
[   17.012313][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   17.012315][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   17.012317][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   17.012319][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   17.012323][    C0]  rcu_core (kernel/rcu/tree.c:2869)
[   17.012326][    C0]  handle_softirqs (kernel/softirq.c:622)
[   17.012329][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   17.012333][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   17.012337][    C0]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   17.012342][    C0]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   17.012343][    C0]  irq_exit_rcu (kernel/softirq.c:752)
[   17.012345][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   17.012347][    C0]  </IRQ>
[   17.012348][    C0]  <TASK>
[   17.012350][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   17.012353][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:62)
[   17.012355][    C0] 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
[   17.012357][    C0] RSP: 0018:fffffffface07e00 EFLAGS: 00000282
[   17.012360][    C0] RAX: 000000000009fb57 RBX: fffffffface1c740 RCX: ffffffffa9ed9667
[   17.012361][    C0] RDX: fffffffface1c740 RSI: ffffffffacc01bcb RDI: ffffffffac66f6c0
[   17.012362][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   17.012363][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff59c0fc3
[   17.012364][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   17.012367][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   17.012372][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:767)
[   17.012374][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   17.012376][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   17.012378][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   17.012380][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   17.012383][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.012385][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.012388][    C0]  do_idle (kernel/sched/idle.c:352)
[   17.012391][    C0]  cpu_startup_entry (kernel/sched/idle.c:451)
[   17.012393][    C0]  rest_init (init/main.c:762)
[   17.012396][    C0]  start_kernel (init/main.c:1220)
[   17.012398][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   17.012401][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   17.012403][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   17.024238][    C0] 1 lock held by swapper/0/0:
| [   17.024327][    C0]  #0: ffffffffad177c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [   17.024490][    C0] stack backtrace:
| [   17.024563][    C0] Tainted: [W]=WARN
[   17.024564][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.024565][    C0] Call Trace:
[   17.024566][    C0]  <IRQ>
[   17.024567][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   17.024570][    C0]  __lock_acquire.cold (kernel/locking/lockdep.c:4830 kernel/locking/lockdep.c:4902 kernel/locking/lockdep.c:5187)
[   17.024573][    C0]  ? dump_stack_lvl (lib/dump_stack.c:123 (discriminator 7))
[   17.024575][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   17.024577][    C0]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.024579][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.024581][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   17.024582][    C0]  __mutex_lock (kernel/locking/mutex.c:646 kernel/locking/mutex.c:820)
[   17.024584][    C0]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.024586][    C0]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.024589][    C0]  ? ww_mutex_lock (kernel/locking/mutex.c:933)
[   17.024590][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   17.024592][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   17.024594][    C0]  ? __tcf_chain_put (net/sched/cls_api.c:694)
[   17.024596][    C0]  __tcf_chain_put (net/sched/cls_api.c:694)
[   17.024598][    C0]  ? free_percpu.part.0 (./include/linux/spinlock.h:408 (discriminator 3) mm/percpu.c:2283 (discriminator 3))
[   17.024601][    C0]  tcf_action_rcu_free (net/sched/act_api.c:130 net/sched/act_api.c:370 net/sched/act_api.c:378)
[   17.024602][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[   17.024604][    C0]  rcu_do_batch (kernel/rcu/tree.c:2617)
[   17.024607][    C0]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[   17.024609][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.024611][    C0]  ? 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)
[   17.024613][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[   17.024614][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   17.024616][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   17.024618][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   17.024620][    C0]  rcu_core (kernel/rcu/tree.c:2869)
[   17.024621][    C0]  handle_softirqs (kernel/softirq.c:622)
[   17.024623][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   17.024626][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   17.024627][    C0]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   17.024629][    C0]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   17.024631][    C0]  irq_exit_rcu (kernel/softirq.c:752)
[   17.024632][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[   17.024634][    C0]  </IRQ>
[   17.024635][    C0]  <TASK>
[   17.024636][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[   17.024637][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:62)
[   17.024639][    C0] 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
[   17.024640][    C0] RSP: 0018:fffffffface07e00 EFLAGS: 00000282
[   17.024642][    C0] RAX: 000000000009fb57 RBX: fffffffface1c740 RCX: ffffffffa9ed9667
[   17.024643][    C0] RDX: fffffffface1c740 RSI: ffffffffacc01bcb RDI: ffffffffac66f6c0
[   17.024644][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   17.024644][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff59c0fc3
[   17.024645][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   17.024647][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   17.024649][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:767)
[   17.024651][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   17.024653][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   17.024655][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   17.024656][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   17.024658][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   17.024659][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   17.024661][    C0]  do_idle (kernel/sched/idle.c:352)
[   17.024663][    C0]  cpu_startup_entry (kernel/sched/idle.c:451)
[   17.024664][    C0]  rest_init (init/main.c:762)
[   17.024666][    C0]  start_kernel (init/main.c:1220)
[   17.024669][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   17.024671][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)


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