======================================
| [   14.863409][    C0] 1 lock held by swapper/0/0:
| [ 14.863628][ C0] #0: ffffffffbaf774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   14.864008][    C0]
| [   14.864008][    C0] stack backtrace:
[   14.864278][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.864281][    C0] Call Trace:
[   14.864283][    C0]  <IRQ>
[ 14.864285][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.864292][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 14.864297][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 14.864300][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 14.864306][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.864310][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 14.864317][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 14.864320][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 14.864323][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 14.864326][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 14.864330][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 14.864333][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.864337][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.864341][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 14.864344][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.864348][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.864351][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.864354][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 14.864358][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.864361][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.864368][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.864371][ 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) 
[ 14.864379][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.864381][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.864384][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.864387][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 14.864393][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.864396][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.864399][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.864402][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.864404][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.864407][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.864409][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.864412][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.864414][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.864419][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.864424][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.864427][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.864430][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.864433][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.864437][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.864440][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.864443][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.864446][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.864450][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.864455][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.864460][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.864463][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.864465][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   14.864469][    C0]  </IRQ>
[   14.864470][    C0]  <TASK>
[ 14.864471][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.864474][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.864478][ 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
[   14.864480][    C0] RSP: 0018:ffffffffbac07df8 EFLAGS: 00000242
[   14.864484][    C0] RAX: 000000000006d1cb RBX: 1ffffffff7580fc3 RCX: ffffffffb9f905d9
[   14.864485][    C0] RDX: 0000000000000000 RSI: ffffffffbaa8f4e4 RDI: ffffffffba253be0
[   14.864487][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   14.864488][    C0] R10: ffff8880360337d3 R11: ffffffffbac11288 R12: 0000000000000000
[   14.864490][    C0] R13: ffffffffbac1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.864494][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.864498][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.864500][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.864503][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.864505][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.864509][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 14.864513][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.864517][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.864519][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.864522][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.864526][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 14.864530][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 14.864534][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.883462][    C0] RCU nest depth: 0, expected: 0
| [   14.883663][    C0] INFO: lockdep is turned off.
| [   14.883979][    C0] Preemption disabled at:
| [ 14.883981][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   14.884448][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.884450][    C0] Call Trace:
[   14.884451][    C0]  <IRQ>
[ 14.884453][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.884457][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 14.884464][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.884469][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.884471][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 14.884475][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.884479][ 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) 
[ 14.884485][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 14.884487][ 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) 
[ 14.884491][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.884495][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.884498][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.884502][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.884506][ 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) 
[ 14.884510][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.884513][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.884516][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.884520][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 14.884524][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.884528][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.884531][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.884533][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.884536][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.884539][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.884541][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.884543][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.884546][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.884552][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.884555][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.884559][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.884562][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.884565][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.884571][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.884574][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.884578][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.884581][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.884585][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.884589][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.884594][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.884597][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.884599][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   14.884602][    C0]  </IRQ>
[   14.884603][    C0]  <TASK>
[ 14.884605][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.884608][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.884611][ 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
[   14.884614][    C0] RSP: 0018:ffffffffbac07df8 EFLAGS: 00000242
[   14.884617][    C0] RAX: 000000000006d1cb RBX: 1ffffffff7580fc3 RCX: ffffffffb9f905d9
[   14.884619][    C0] RDX: 0000000000000000 RSI: ffffffffbaa8f4e4 RDI: ffffffffba253be0
[   14.884620][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   14.884622][    C0] R10: ffff8880360337d3 R11: ffffffffbac11288 R12: 0000000000000000
[   14.884623][    C0] R13: ffffffffbac1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.884627][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.884631][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.884633][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.884636][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.884639][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.884642][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 14.884646][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.884649][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.884652][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.884655][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.884659][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 14.884662][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 14.884666][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.087994][    C2] INFO: lockdep is turned off.
| [   17.088201][    C2] Preemption disabled at:
| [ 17.088205][ C2] 0x0 
| [   17.088585][    C2] Tainted: [W]=WARN
[   17.088588][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.088593][    C2] Call Trace:
[   17.088598][    C2]  <IRQ>
[ 17.088601][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.088641][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 17.088660][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.088667][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.088670][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.088684][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.088693][ 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) 
[ 17.088703][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.088706][ 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) 
[ 17.088709][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.088719][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.088722][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.088737][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.088742][ 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) 
[ 17.088757][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.088762][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.088765][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.088779][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.088786][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.088796][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.088799][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.088802][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.088805][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.088810][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 17.088812][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.088814][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.088822][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.088835][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.088842][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.088847][ C2] __put_net (net/core/net_namespace.c:732) 
[ 17.088852][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.088856][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.088859][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.088863][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.088867][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.088878][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.088886][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.088890][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 17.088896][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.088899][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.088903][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.088907][    C2]  </IRQ>
[   17.088908][    C2]  <TASK>
[ 17.088910][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.088913][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.088919][ 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
[   17.088922][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   17.088930][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffffb9f905d9
[   17.088932][    C2] RDX: ffffed1006c266fb RSI: ffffffffba253b60 RDI: ffffffffb778d18f
[   17.088934][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c266fa
[   17.088936][    C2] R10: ffff8880361337d3 R11: ffff888001ee2818 R12: 0000000000000000
[   17.088938][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 17.088942][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.088945][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.088949][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.088952][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.088955][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.088958][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.088961][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.088966][ C2] do_idle (kernel/sched/idle.c:325) 
[ 17.088969][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.088972][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.088974][ 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