======================================
| [   15.465480][    C0] 1 lock held by swapper/0/0:
| [ 15.465681][ C0] #0: ffffffff87f774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.466038][    C0]
| [   15.466038][    C0] stack backtrace:
[   15.466286][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.466288][    C0] Call Trace:
[   15.466290][    C0]  <IRQ>
[ 15.466292][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.466297][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.466302][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.466305][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.466310][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.466314][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.466320][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.466323][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.466326][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.466329][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.466333][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.466336][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.466340][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.466344][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.466346][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.466351][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.466354][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.466357][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 15.466361][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.466364][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.466370][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.466374][ 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) 
[ 15.466379][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.466382][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.466385][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.466387][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.466392][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.466396][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.466399][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.466402][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.466404][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.466407][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.466410][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.466412][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.466415][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.466420][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.466423][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.466427][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.466430][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.466433][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.466437][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.466440][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.466444][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.466446][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.466451][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.466455][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.466460][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.466463][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.466466][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.466470][    C0]  </IRQ>
[   15.466471][    C0]  <TASK>
[ 15.466472][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.466475][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.466479][ 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
[   15.466481][    C0] RSP: 0000:ffffffff87c07df8 EFLAGS: 00000246
[   15.466484][    C0] RAX: 000000000006a959 RBX: 1ffffffff0f80fc3 RCX: ffffffff86f905d9
[   15.466486][    C0] RDX: 0000000000000000 RSI: ffffffff87a8f4e4 RDI: ffffffff87253be0
[   15.466488][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   15.466489][    C0] R10: ffff8880360337d3 R11: ffffffff87c11288 R12: 0000000000000000
[   15.466491][    C0] R13: ffffffff87c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.466495][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.466499][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.466502][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.466504][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.466507][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.466511][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.466515][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.466518][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.466521][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.466525][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.466528][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.466533][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.466536][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.484070][    C0] RCU nest depth: 0, expected: 0
| [   15.484261][    C0] INFO: lockdep is turned off.
| [   15.484450][    C0] Preemption disabled at:
| [ 15.484452][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   15.484897][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.484899][    C0] Call Trace:
[   15.484900][    C0]  <IRQ>
[ 15.484901][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.484907][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 15.484913][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.484917][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.484920][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.484924][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.484928][ 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) 
[ 15.484933][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.484936][ 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) 
[ 15.484939][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.484944][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.484947][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.484952][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.484956][ 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) 
[ 15.484960][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.484963][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.484966][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.484970][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.484974][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.484978][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.484981][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.484984][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.484986][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.484989][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.484991][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.484994][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.484997][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.485004][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.485008][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.485012][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.485014][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.485018][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.485023][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.485026][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.485030][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.485033][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.485037][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.485041][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.485047][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.485050][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.485052][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.485056][    C0]  </IRQ>
[   15.485057][    C0]  <TASK>
[ 15.485059][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.485061][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.485065][ 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
[   15.485068][    C0] RSP: 0000:ffffffff87c07df8 EFLAGS: 00000246
[   15.485070][    C0] RAX: 000000000006a959 RBX: 1ffffffff0f80fc3 RCX: ffffffff86f905d9
[   15.485072][    C0] RDX: 0000000000000000 RSI: ffffffff87a8f4e4 RDI: ffffffff87253be0
[   15.485074][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   15.485075][    C0] R10: ffff8880360337d3 R11: ffffffff87c11288 R12: 0000000000000000
[   15.485077][    C0] R13: ffffffff87c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.485081][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.485086][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.485088][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.485091][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.485094][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.485098][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.485103][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.485106][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.485109][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.485113][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.485117][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.485121][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.485125][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.278513][    C3] INFO: lockdep is turned off.
| [   17.278689][    C3] Preemption disabled at:
| [ 17.278691][ C3] 0x0 
| [   17.279002][    C3] Tainted: [W]=WARN
[   17.279003][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.279005][    C3] Call Trace:
[   17.279007][    C3]  <IRQ>
[ 17.279009][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.279017][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 17.279025][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.279029][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.279032][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.279036][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.279041][ 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) 
[ 17.279047][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.279050][ 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) 
[ 17.279053][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.279059][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.279062][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.279068][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.279072][ 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) 
[ 17.279077][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.279081][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.279084][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.279089][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.279094][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.279098][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.279101][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.279104][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.279107][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.279110][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 17.279112][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.279115][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.279119][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.279124][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.279128][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.279132][ C3] __put_net (net/core/net_namespace.c:732) 
[ 17.279136][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.279140][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.279143][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.279147][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.279151][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.279157][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.279163][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.279167][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 17.279173][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.279176][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.279179][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.279182][    C3]  </IRQ>
[   17.279184][    C3]  <TASK>
[ 17.279185][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.279188][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.279192][ C3] 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
[   17.279195][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   17.279199][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffff86f905d9
[   17.279201][    C3] RDX: ffffed1006c366fb RSI: ffffffff87253b60 RDI: ffffffff8478d18f
[   17.279202][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c366fa
[   17.279204][    C3] R10: ffff8880361b37d3 R11: ffffc900001579c0 R12: 0000000000000000
[   17.279206][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 17.279210][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.279213][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.279217][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.279219][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.279222][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.279225][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.279229][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.279233][ C3] do_idle (kernel/sched/idle.c:325) 
[ 17.279236][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.279239][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.279242][ C3] ? __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