======================================
| [   15.131571][    C0] 1 lock held by swapper/0/0:
| [ 15.131781][ C0] #0: ffffffff8d7774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.132148][    C0]
| [   15.132148][    C0] stack backtrace:
[   15.132408][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.132410][    C0] Call Trace:
[   15.132412][    C0]  <IRQ>
[ 15.132414][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.132420][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.132424][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.132427][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.132432][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.132436][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.132442][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.132446][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.132449][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.132452][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.132456][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.132459][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.132463][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.132467][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.132470][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.132474][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.132477][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.132481][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 15.132485][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.132488][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.132493][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.132497][ 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) 
[ 15.132502][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.132505][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.132508][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.132511][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.132515][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.132519][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.132523][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.132525][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.132528][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.132531][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.132533][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.132536][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.132539][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.132544][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.132548][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.132552][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.132554][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.132558][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.132562][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.132565][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.132569][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.132572][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.132576][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.132581][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.132586][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.132589][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.132591][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.132595][    C0]  </IRQ>
[   15.132596][    C0]  <TASK>
[ 15.132598][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.132600][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.132604][ 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
[   15.132607][    C0] RSP: 0018:ffffffff8d407df8 EFLAGS: 00000242
[   15.132610][    C0] RAX: 00000000000645df RBX: 1ffffffff1a80fc3 RCX: ffffffff8c7905d9
[   15.132612][    C0] RDX: 0000000000000000 RSI: ffffffff8d28f4e4 RDI: ffffffff8ca53be0
[   15.132614][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   15.132616][    C0] R10: ffff8880360337d3 R11: ffffffff8d411288 R12: 0000000000000000
[   15.132617][    C0] R13: ffffffff8d41f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.132621][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.132626][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.132629][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.132631][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.132634][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.132638][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.132643][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.132647][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.132650][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.132653][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.132657][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.132661][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.132665][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.151143][    C0] RCU nest depth: 0, expected: 0
| [   15.151332][    C0] INFO: lockdep is turned off.
| [   15.151646][    C0] Preemption disabled at:
| [ 15.151648][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   15.152098][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.152099][    C0] Call Trace:
[   15.152101][    C0]  <IRQ>
[ 15.152103][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.152109][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 15.152115][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.152119][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.152122][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.152126][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.152131][ 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) 
[ 15.152136][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.152139][ 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) 
[ 15.152142][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.152147][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.152150][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.152155][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.152159][ 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) 
[ 15.152163][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.152167][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.152170][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.152174][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.152179][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.152182][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.152186][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.152188][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.152191][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.152194][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.152196][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.152198][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.152201][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.152208][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.152211][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.152216][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.152218][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.152221][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.152226][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.152230][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.152234][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.152237][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.152241][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.152246][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.152251][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.152254][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.152257][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.152261][    C0]  </IRQ>
[   15.152262][    C0]  <TASK>
[ 15.152264][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.152267][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.152271][ 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
[   15.152274][    C0] RSP: 0018:ffffffff8d407df8 EFLAGS: 00000242
[   15.152276][    C0] RAX: 00000000000645df RBX: 1ffffffff1a80fc3 RCX: ffffffff8c7905d9
[   15.152278][    C0] RDX: 0000000000000000 RSI: ffffffff8d28f4e4 RDI: ffffffff8ca53be0
[   15.152280][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   15.152281][    C0] R10: ffff8880360337d3 R11: ffffffff8d411288 R12: 0000000000000000
[   15.152283][    C0] R13: ffffffff8d41f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.152287][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.152292][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.152294][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.152297][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.152300][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.152304][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.152309][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.152312][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.152315][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.152319][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.152323][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.152327][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.152331][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.770515][    C3] INFO: lockdep is turned off.
| [   16.770722][    C3] Preemption disabled at:
| [ 16.770724][ C3] handle_softirqs (kernel/softirq.c:553) 
| [   16.771157][    C3] Tainted: [W]=WARN
[   16.771158][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.771160][    C3] Call Trace:
[   16.771162][    C3]  <TASK>
[ 16.771164][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.771173][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 16.771180][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.771185][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.771188][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.771192][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.771197][ 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) 
[ 16.771203][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.771205][ 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) 
[ 16.771209][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.771214][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.771217][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.771223][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.771227][ 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) 
[ 16.771233][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.771236][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.771239][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.771243][ C3] ? kthread (kernel/kthread.c:464) 
[ 16.771246][ C3] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 16.771250][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 16.771256][ 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) 
[ 16.771260][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 16.771263][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.771267][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.771271][ C3] __put_net (net/core/net_namespace.c:732) 
[ 16.771275][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.771279][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.771281][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.771286][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.771289][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.771292][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.771299][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.771304][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 16.771309][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 16.771312][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 16.771315][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.771319][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 16.771323][ C3] kthread (kernel/kthread.c:464) 
[ 16.771325][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.771328][ C3] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 16.771330][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.771334][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.771337][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.771340][ C3] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 16.771343][ 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