======================================
| [   16.083461][    C0] 1 lock held by swapper/0/0:
| [ 16.083676][ C0] #0: ffffffff9ed774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   16.084072][    C0]
| [   16.084072][    C0] stack backtrace:
[   16.084348][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.084351][    C0] Call Trace:
[   16.084353][    C0]  <IRQ>
[ 16.084355][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.084363][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 16.084369][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 16.084372][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 16.084379][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.084383][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 16.084389][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 16.084393][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 16.084396][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 16.084399][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.084403][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 16.084406][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.084411][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.084416][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 16.084419][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.084423][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 16.084427][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.084430][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 16.084435][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 16.084439][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 16.084446][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.084450][ 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) 
[ 16.084457][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.084460][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.084463][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.084466][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.084472][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.084477][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.084480][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.084483][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.084485][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.084490][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.084492][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.084495][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.084498][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.084504][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.084508][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.084512][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.084515][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.084518][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.084522][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.084526][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.084529][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.084532][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.084537][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.084542][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.084547][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.084551][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.084553][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.084557][    C0]  </IRQ>
[   16.084558][    C0]  <TASK>
[ 16.084560][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.084563][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.084567][ 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
[   16.084570][    C0] RSP: 0018:ffffffff9ea07df8 EFLAGS: 00000242
[   16.084574][    C0] RAX: 000000000006ed89 RBX: 1ffffffff3d40fc3 RCX: ffffffff9dd8f5d9
[   16.084576][    C0] RDX: 0000000000000000 RSI: ffffffff9e88f4e4 RDI: ffffffff9e053be0
[   16.084578][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   16.084579][    C0] R10: ffff8880360337d3 R11: ffffffff9ea11288 R12: 0000000000000000
[   16.084581][    C0] R13: ffffffff9ea1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.084585][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.084590][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.084592][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.084595][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.084598][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.084602][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.084608][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.084612][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.084615][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.084618][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.084622][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 16.084627][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 16.084631][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.103971][    C0] RCU nest depth: 0, expected: 0
| [   16.104173][    C0] INFO: lockdep is turned off.
| [   16.104380][    C0] Preemption disabled at:
| [ 16.104381][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   16.104958][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.104960][    C0] Call Trace:
[   16.104962][    C0]  <IRQ>
[ 16.104964][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.104972][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 16.104980][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.104985][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.104988][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.104993][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.104998][ 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) 
[ 16.105005][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.105008][ 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) 
[ 16.105011][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.105018][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.105021][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 16.105028][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.105031][ 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) 
[ 16.105037][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.105042][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.105045][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.105051][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.105057][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.105061][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.105065][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.105068][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.105070][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.105075][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.105077][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.105080][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.105083][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.105091][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.105096][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.105100][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.105103][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.105106][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.105113][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.105116][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.105122][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.105125][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.105129][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.105135][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.105140][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.105143][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.105146][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.105150][    C0]  </IRQ>
[   16.105151][    C0]  <TASK>
[ 16.105152][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.105155][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.105159][ 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
[   16.105162][    C0] RSP: 0018:ffffffff9ea07df8 EFLAGS: 00000242
[   16.105165][    C0] RAX: 000000000006ed89 RBX: 1ffffffff3d40fc3 RCX: ffffffff9dd8f5d9
[   16.105167][    C0] RDX: 0000000000000000 RSI: ffffffff9e88f4e4 RDI: ffffffff9e053be0
[   16.105169][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   16.105170][    C0] R10: ffff8880360337d3 R11: ffffffff9ea11288 R12: 0000000000000000
[   16.105172][    C0] R13: ffffffff9ea1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.105176][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.105180][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.105183][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.105185][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.105189][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.105193][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.105199][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.105203][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.105206][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.105210][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.105213][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 16.105219][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 16.105223][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   18.066536][    C1] INFO: lockdep is turned off.
| [   18.066704][    C1] Preemption disabled at:
| [ 18.066706][ C1] handle_softirqs (kernel/softirq.c:553) 
| [   18.067053][    C1] Tainted: [W]=WARN
[   18.067054][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.067058][    C1] Call Trace:
[   18.067060][    C1]  <TASK>
[ 18.067062][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.067071][ C1] __might_resched (kernel/sched/core.c:8796) 
[ 18.067080][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.067085][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.067089][ C1] ? simple_recursive_removal (fs/libfs.c:614) 
[ 18.067094][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.067100][ 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) 
[ 18.067108][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 18.067111][ 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) 
[ 18.067114][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.067121][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.067124][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 18.067132][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.067135][ 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) 
[ 18.067143][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.067147][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.067150][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 18.067155][ C1] ? kthread (kernel/kthread.c:464) 
[ 18.067159][ C1] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 18.067164][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 18.067171][ 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) 
[ 18.067175][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 18.067179][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 18.067184][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.067188][ C1] __put_net (net/core/net_namespace.c:732) 
[ 18.067193][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.067197][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.067199][ C1] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.067204][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.067207][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.067210][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.067219][ C1] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.067225][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 18.067229][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 18.067233][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 18.067236][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 18.067239][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 18.067244][ C1] kthread (kernel/kthread.c:464) 
[ 18.067246][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 18.067248][ C1] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 18.067251][ C1] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.067255][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.067258][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 18.067261][ C1] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 18.067264][ 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