======================================
| [   15.332006][    C0] 1 lock held by swapper/0/0:
| [ 15.332215][ C0] #0: ffffffff879774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.332581][    C0]
| [   15.332581][    C0] stack backtrace:
[   15.332839][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.332841][    C0] Call Trace:
[   15.332843][    C0]  <IRQ>
[ 15.332845][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.332851][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.332855][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.332859][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.332864][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.332869][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.332875][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.332878][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.332881][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.332884][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.332888][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.332891][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.332895][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.332900][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.332902][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.332907][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.332910][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.332914][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 15.332918][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.332921][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.332927][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.332931][ 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) 
[ 15.332936][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.332939][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.332942][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.332945][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.332949][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.332953][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.332956][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.332959][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.332961][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.332964][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.332966][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.332969][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.332972][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.332977][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.332980][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.332984][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.332986][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.332990][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.332994][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.332997][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.333001][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.333003][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.333008][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.333012][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.333017][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.333020][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.333023][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.333026][    C0]  </IRQ>
[   15.333027][    C0]  <TASK>
[ 15.333029][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.333032][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.333036][ 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
[   15.333038][    C0] RSP: 0018:ffffffff87607df8 EFLAGS: 00000242
[   15.333041][    C0] RAX: 000000000006f0c1 RBX: 1ffffffff0ec0fc3 RCX: ffffffff869905d9
[   15.333043][    C0] RDX: 0000000000000000 RSI: ffffffff8748f4e4 RDI: ffffffff86c53be0
[   15.333045][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005e866fa
[   15.333047][    C0] R10: ffff88802f4337d3 R11: ffffffff87611288 R12: 0000000000000000
[   15.333048][    C0] R13: ffffffff8761f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.333052][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.333057][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.333060][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.333062][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.333065][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.333069][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.333074][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.333077][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.333080][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.333083][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.333087][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.333092][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.333096][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.351951][    C0] RCU nest depth: 0, expected: 0
| [   15.352143][    C0] INFO: lockdep is turned off.
| [   15.352341][    C0] Preemption disabled at:
| [ 15.352342][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   15.352908][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.352909][    C0] Call Trace:
[   15.352911][    C0]  <IRQ>
[ 15.352913][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.352918][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 15.352924][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.352928][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.352931][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.352935][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.352940][ 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) 
[ 15.352946][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.352949][ 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) 
[ 15.352952][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.352958][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.352961][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.352967][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.352970][ 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) 
[ 15.352975][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.352978][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.352981][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.352986][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.352990][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.352994][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.352997][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.353000][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.353002][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.353005][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.353008][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.353010][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.353013][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.353020][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.353023][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.353027][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.353030][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.353033][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.353038][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.353041][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.353045][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.353048][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.353053][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.353057][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.353062][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.353066][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.353068][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.353072][    C0]  </IRQ>
[   15.353073][    C0]  <TASK>
[ 15.353074][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.353077][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.353081][ 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
[   15.353083][    C0] RSP: 0018:ffffffff87607df8 EFLAGS: 00000242
[   15.353086][    C0] RAX: 000000000006f0c1 RBX: 1ffffffff0ec0fc3 RCX: ffffffff869905d9
[   15.353088][    C0] RDX: 0000000000000000 RSI: ffffffff8748f4e4 RDI: ffffffff86c53be0
[   15.353090][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005e866fa
[   15.353092][    C0] R10: ffff88802f4337d3 R11: ffffffff87611288 R12: 0000000000000000
[   15.353093][    C0] R13: ffffffff8761f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.353097][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.353102][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.353105][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.353107][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.353110][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.353114][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.353119][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.353122][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.353125][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.353128][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.353132][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.353137][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.353141][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.236422][    C1] INFO: lockdep is turned off.
| [   17.236580][    C1] Preemption disabled at:
| [ 17.236582][ C1] handle_softirqs (kernel/softirq.c:553) 
| [   17.236913][    C1] Tainted: [W]=WARN
[   17.236914][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.236917][    C1] Call Trace:
[   17.236919][    C1]  <TASK>
[ 17.236921][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.236928][ C1] __might_resched (kernel/sched/core.c:8796) 
[ 17.236935][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.236939][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.236942][ C1] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.236947][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.236952][ C1] ? 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) 
[ 17.236958][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.236961][ C1] ? 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) 
[ 17.236964][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.236970][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.236973][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.236979][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.236982][ C1] ? __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) 
[ 17.236988][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.236991][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.236994][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 17.236999][ C1] ? kthread (kernel/kthread.c:464) 
[ 17.237002][ C1] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 17.237006][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 17.237011][ C1] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 17.237015][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 17.237018][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.237022][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.237027][ C1] __put_net (net/core/net_namespace.c:732) 
[ 17.237030][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.237034][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.237037][ C1] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.237041][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.237045][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.237048][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.237055][ C1] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.237059][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 17.237063][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 17.237067][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 17.237070][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 17.237074][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 17.237078][ C1] kthread (kernel/kthread.c:464) 
[ 17.237081][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.237083][ C1] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 17.237086][ C1] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.237090][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.237093][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.237096][ C1] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 17.237098][ C1] ? __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