======================================
| [   17.298590][    C0] 1 lock held by swapper/0/0:
| [ 17.298797][ C0] #0: ffffffff97f774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   17.299161][    C0]
| [   17.299161][    C0] stack backtrace:
[   17.299415][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.299417][    C0] Call Trace:
[   17.299419][    C0]  <IRQ>
[ 17.299420][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.299426][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 17.299431][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 17.299434][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 17.299439][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.299443][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 17.299449][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 17.299452][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 17.299455][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 17.299458][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.299463][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 17.299466][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.299470][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.299474][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 17.299476][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.299481][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.299485][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.299488][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 17.299492][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.299495][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.299501][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.299505][ C0] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.299511][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.299513][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.299517][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.299519][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.299524][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.299527][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.299531][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.299533][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.299536][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.299540][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.299542][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.299544][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.299547][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.299553][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.299556][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.299560][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.299563][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.299568][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.299571][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.299574][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.299577][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.299582][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.299586][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.299592][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.299595][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.299597][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.299601][    C0]  </IRQ>
[   17.299602][    C0]  <TASK>
[ 17.299604][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.299606][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.299610][ C0] Code: 92 b5 00 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 83 37 10 00 fb f4 <e9> fc 54 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	92                   	xchg   %eax,%edx
   1:	b5 00                	mov    $0x0,%ch
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d 83 37 10 00 	verw   0x103783(%rip)        # 0x1037ab
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	e9 fc 54 02 00       	jmp    0x2552b		<-- trapping instruction
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 fc 54 02 00       	jmp    0x25501
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   17.299613][    C0] RSP: 0018:ffffffff97c07df8 EFLAGS: 00000246
[   17.299616][    C0] RAX: 00000000000740cf RBX: 1ffffffff2f80fc3 RCX: ffffffff96f905d9
[   17.299618][    C0] RDX: 0000000000000000 RSI: ffffffff97a8f4e4 RDI: ffffffff97253be0
[   17.299620][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   17.299621][    C0] R10: ffff8880360337d3 R11: ffffffff97c11288 R12: 0000000000000000
[   17.299623][    C0] R13: ffffffff97c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.299627][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.299632][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.299634][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.299637][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.299640][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.299644][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.299649][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.299653][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.299656][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.299659][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.299663][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 17.299668][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 17.299672][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.317036][    C0] RCU nest depth: 0, expected: 0
| [   17.317225][    C0] INFO: lockdep is turned off.
| [   17.317425][    C0] Preemption disabled at:
| [ 17.317426][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   17.317856][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.317858][    C0] Call Trace:
[   17.317859][    C0]  <IRQ>
[ 17.317861][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.317866][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 17.317872][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.317875][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.317879][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.317883][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.317887][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.317892][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.317895][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.317898][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.317903][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.317906][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.317912][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.317915][ C0] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.317920][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.317923][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.317926][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.317930][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.317934][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.317937][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.317941][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.317943][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.317946][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.317948][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.317951][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.317953][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.317956][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.317962][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.317966][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.317970][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.317972][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.317977][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.317980][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.317983][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.317986][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.317991][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.317996][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.318001][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.318004][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.318007][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.318010][    C0]  </IRQ>
[   17.318011][    C0]  <TASK>
[ 17.318013][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.318016][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.318019][ C0] Code: 92 b5 00 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 83 37 10 00 fb f4 <e9> fc 54 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	92                   	xchg   %eax,%edx
   1:	b5 00                	mov    $0x0,%ch
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d 83 37 10 00 	verw   0x103783(%rip)        # 0x1037ab
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	e9 fc 54 02 00       	jmp    0x2552b		<-- trapping instruction
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	e9 fc 54 02 00       	jmp    0x25501
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   17.318022][    C0] RSP: 0018:ffffffff97c07df8 EFLAGS: 00000246
[   17.318025][    C0] RAX: 00000000000740cf RBX: 1ffffffff2f80fc3 RCX: ffffffff96f905d9
[   17.318027][    C0] RDX: 0000000000000000 RSI: ffffffff97a8f4e4 RDI: ffffffff97253be0
[   17.318029][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   17.318030][    C0] R10: ffff8880360337d3 R11: ffffffff97c11288 R12: 0000000000000000
[   17.318032][    C0] R13: ffffffff97c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.318036][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.318041][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.318043][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.318046][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.318049][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.318053][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.318058][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.318062][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.318065][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.318068][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.318072][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 17.318077][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
schedule_preempt_disabled:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal