======================================
| [   16.314958][    C0] 1 lock held by swapper/0/0:
| [ 16.315205][ C0] #0: ffffffffb9d774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   16.315646][    C0]
| [   16.315646][    C0] stack backtrace:
[   16.315958][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.315960][    C0] Call Trace:
[   16.315962][    C0]  <IRQ>
[ 16.315964][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.315970][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 16.315975][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 16.315978][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 16.315983][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.315987][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 16.315992][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 16.315996][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 16.315999][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 16.316002][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.316007][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 16.316010][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.316014][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.316018][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 16.316021][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.316025][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 16.316029][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.316032][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 16.316036][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 16.316040][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 16.316045][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.316049][ 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) 
[ 16.316055][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.316057][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.316061][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.316064][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.316069][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.316073][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.316076][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.316079][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.316081][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.316084][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.316087][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.316089][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.316092][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.316098][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.316102][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.316106][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.316108][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.316111][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.316116][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.316119][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.316122][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.316125][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.316130][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.316134][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.316140][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.316143][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.316146][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.316149][    C0]  </IRQ>
[   16.316150][    C0]  <TASK>
[ 16.316152][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.316155][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.316159][ C0] Code: a2 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 47 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:	a2 b5 00 c3 cc cc cc 	movabs %al,0xfccccccccc300b5
   7:	cc 0f 
   9:	1f                   	(bad)
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  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 47 10 00 	verw   0x104783(%rip)        # 0x1047ab
  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
[   16.316161][    C0] RSP: 0018:ffffffffb9a07df8 EFLAGS: 00000246
[   16.316165][    C0] RAX: 0000000000073447 RBX: 1ffffffff7340fc3 RCX: ffffffffb8d8f5d9
[   16.316167][    C0] RDX: 0000000000000000 RSI: ffffffffb988f4e4 RDI: ffffffffb9053be0
[   16.316169][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   16.316170][    C0] R10: ffff8880360337d3 R11: ffffffffb9a11288 R12: 0000000000000000
[   16.316172][    C0] R13: ffffffffb9a1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.316176][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.316181][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.316183][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.316186][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.316189][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.316193][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.316198][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.316201][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.316204][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.316208][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.316212][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 16.316217][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 16.316221][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.339206][    C0] RCU nest depth: 0, expected: 0
| [   16.339573][    C0] INFO: lockdep is turned off.
| [   16.339827][    C0] Preemption disabled at:
| [ 16.339829][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   16.340374][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.340376][    C0] Call Trace:
[   16.340378][    C0]  <IRQ>
[ 16.340379][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.340385][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 16.340392][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.340396][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.340399][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.340403][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.340408][ 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) 
[ 16.340413][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.340416][ 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) 
[ 16.340419][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.340425][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.340428][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 16.340434][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.340437][ 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) 
[ 16.340442][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.340446][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.340449][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.340454][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.340458][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.340461][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.340465][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.340468][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.340470][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.340474][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.340476][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.340478][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.340481][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.340488][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.340491][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.340495][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.340498][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.340501][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.340507][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.340510][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.340515][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.340518][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.340523][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.340527][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.340532][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.340535][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.340538][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.340541][    C0]  </IRQ>
[   16.340542][    C0]  <TASK>
[ 16.340544][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.340547][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.340551][ C0] Code: a2 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 47 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:	a2 b5 00 c3 cc cc cc 	movabs %al,0xfccccccccc300b5
   7:	cc 0f 
   9:	1f                   	(bad)
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  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 47 10 00 	verw   0x104783(%rip)        # 0x1047ab
  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
[   16.340553][    C0] RSP: 0018:ffffffffb9a07df8 EFLAGS: 00000246
[   16.340557][    C0] RAX: 0000000000073447 RBX: 1ffffffff7340fc3 RCX: ffffffffb8d8f5d9
[   16.340559][    C0] RDX: 0000000000000000 RSI: ffffffffb988f4e4 RDI: ffffffffb9053be0
[   16.340560][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   16.340562][    C0] R10: ffff8880360337d3 R11: ffffffffb9a11288 R12: 0000000000000000
[   16.340564][    C0] R13: ffffffffb9a1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.340567][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.340572][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.340575][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.340577][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.340580][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.340584][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.340589][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.340593][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.340595][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.340599][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.340603][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 16.340608][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 16.340612][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   18.404062][    C3] INFO: lockdep is turned off.
| [   18.404228][    C3] Preemption disabled at:
| [ 18.404229][ C3] handle_softirqs (kernel/softirq.c:553) 
| [   18.404594][    C3] Tainted: [W]=WARN
[   18.404595][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.404598][    C3] Call Trace:
[   18.404600][    C3]  <TASK>
[ 18.404602][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.404613][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 18.404620][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.404626][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.404629][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 18.404635][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.404641][ C3] ? 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) 
[ 18.404648][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 18.404651][ C3] ? 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) 
[ 18.404654][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.404661][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.404665][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 18.404672][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.404676][ C3] ? __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) 
[ 18.404683][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.404686][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.404690][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 18.404695][ C3] ? kthread (kernel/kthread.c:464) 
[ 18.404698][ C3] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 18.404703][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 18.404710][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 18.404715][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 18.404719][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 18.404724][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.404729][ C3] __put_net (net/core/net_namespace.c:732) 
[ 18.404734][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.404738][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.404740][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.404745][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.404748][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.404751][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.404760][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.404766][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 18.404770][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 18.404774][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 18.404776][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 18.404780][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 18.404784][ C3] kthread (kernel/kthread.c:464) 
[ 18.404787][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 18.404789][ C3] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 18.404792][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.404795][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.404798][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 18.404804][ C3] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 18.404807][ C3] ? __pfx_kthread (kernel/kthread.c:413) 


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