======================================
| [   17.721207][    C0] 1 lock held by swapper/0/0:
| [ 17.721416][ C0] #0: ffffffff967774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   17.721799][    C0]
| [   17.721799][    C0] stack backtrace:
[   17.722064][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.722066][    C0] Call Trace:
[   17.722069][    C0]  <IRQ>
[ 17.722071][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.722079][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 17.722084][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 17.722087][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 17.722093][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.722098][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 17.722105][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 17.722109][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 17.722112][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 17.722115][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.722119][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 17.722122][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.722127][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.722132][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 17.722134][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.722139][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.722142][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.722146][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 17.722150][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.722153][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.722161][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.722165][ 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) 
[ 17.722172][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.722175][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.722178][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.722181][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.722186][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.722191][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.722195][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.722197][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.722200][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.722204][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.722206][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.722209][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.722212][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.722217][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.722222][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.722226][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.722229][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.722232][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.722236][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.722240][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.722243][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.722246][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.722251][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.722256][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.722261][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.722264][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.722267][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.722270][    C0]  </IRQ>
[   17.722271][    C0]  <TASK>
[ 17.722273][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.722276][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.722280][ 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
[   17.722283][    C0] RSP: 0018:ffffffff96407df8 EFLAGS: 00000242
[   17.722287][    C0] RAX: 000000000007336d RBX: 1ffffffff2c80fc3 RCX: ffffffff957905d9
[   17.722289][    C0] RDX: 0000000000000000 RSI: ffffffff9628f4e4 RDI: ffffffff95a53be0
[   17.722291][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   17.722292][    C0] R10: ffff8880360337d3 R11: ffffffff96411288 R12: 0000000000000000
[   17.722294][    C0] R13: ffffffff9641f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.722298][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.722303][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.722305][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.722308][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.722311][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.722315][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.722321][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.722324][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.722327][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.722330][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.722334][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 17.722338][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 17.722342][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.741082][    C0] RCU nest depth: 0, expected: 0
| [   17.741291][    C0] INFO: lockdep is turned off.
| [   17.741504][    C0] Preemption disabled at:
| [ 17.741507][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   17.741961][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.741964][    C0] Call Trace:
[   17.741966][    C0]  <IRQ>
[ 17.741967][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.741974][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 17.741983][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.741987][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.741990][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.741995][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.742001][ 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) 
[ 17.742007][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.742010][ 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) 
[ 17.742013][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.742020][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.742023][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.742030][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.742033][ 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) 
[ 17.742039][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.742043][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.742047][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.742052][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.742058][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.742062][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.742066][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.742068][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.742071][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.742074][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.742077][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.742079][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.742083][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.742089][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.742094][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.742098][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.742100][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.742104][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.742110][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.742113][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.742118][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.742121][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.742126][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.742130][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.742135][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.742138][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.742141][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.742145][    C0]  </IRQ>
[   17.742146][    C0]  <TASK>
[ 17.742147][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.742150][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.742155][ 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
[   17.742157][    C0] RSP: 0018:ffffffff96407df8 EFLAGS: 00000242
[   17.742161][    C0] RAX: 000000000007336d RBX: 1ffffffff2c80fc3 RCX: ffffffff957905d9
[   17.742163][    C0] RDX: 0000000000000000 RSI: ffffffff9628f4e4 RDI: ffffffff95a53be0
[   17.742166][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   17.742168][    C0] R10: ffff8880360337d3 R11: ffffffff96411288 R12: 0000000000000000
[   17.742169][    C0] R13: ffffffff9641f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.742173][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.742178][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.742181][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.742183][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.742186][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.742190][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.742196][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.742199][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.742202][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.742206][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.742210][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 17.742214][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 17.742218][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   20.270360][    C2] INFO: lockdep is turned off.
| [   20.270568][    C2] Preemption disabled at:
| [ 20.270570][ C2] 0x0 
| [   20.270948][    C2] Tainted: [W]=WARN
[   20.270950][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.270952][    C2] Call Trace:
[   20.270954][    C2]  <IRQ>
[ 20.270957][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.270969][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 20.270979][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 20.270985][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 20.270988][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 20.270995][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.271002][ C2] ? 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) 
[ 20.271009][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 20.271012][ C2] ? 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) 
[ 20.271015][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 20.271023][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 20.271026][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 20.271034][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 20.271037][ C2] ? __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) 
[ 20.271048][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.271053][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 20.271056][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.271064][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 20.271070][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.271075][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.271079][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.271081][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.271084][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.271088][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 20.271091][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.271093][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 20.271098][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 20.271106][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 20.271110][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.271115][ C2] __put_net (net/core/net_namespace.c:732) 
[ 20.271120][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 20.271124][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.271126][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.271131][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 20.271135][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.271140][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 20.271145][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 20.271150][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.271153][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.271156][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   20.271160][    C2]  </IRQ>
[   20.271161][    C2]  <TASK>
[ 20.271163][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.271166][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.271170][ C2] 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
[   20.271173][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   20.271177][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffff957905d9
[   20.271179][    C2] RDX: ffffed1006c266fb RSI: ffffffff95a53b60 RDI: ffffffff92f8d18f
[   20.271181][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c266fa
[   20.271182][    C2] R10: ffff8880361337d3 R11: ffff888001bdcad8 R12: 0000000000000000
[   20.271184][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 20.271188][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 20.271191][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.271195][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.271198][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.271200][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.271203][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 20.271207][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 20.271212][ C2] do_idle (kernel/sched/idle.c:325) 
[ 20.271215][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.271218][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 20.271221][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


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