======================================
| [   17.473828][    C0] 1 lock held by swapper/0/0:
| [ 17.474046][ C0] #0: ffffffffafb774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   17.474446][    C0]
| [   17.474446][    C0] stack backtrace:
[   17.474734][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.474739][    C0] Call Trace:
[   17.474741][    C0]  <IRQ>
[ 17.474743][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.474754][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 17.474758][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 17.474761][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 17.474774][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.474778][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 17.474785][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 17.474789][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 17.474792][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 17.474795][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.474799][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 17.474804][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.474808][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.474814][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 17.474817][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.474821][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.474824][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.474828][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 17.474832][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.474835][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.474849][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.474853][ 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) 
[ 17.474866][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.474869][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.474872][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.474875][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.474882][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.474889][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.474893][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.474895][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.474898][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.474903][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.474905][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.474907][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.474910][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.474915][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.474921][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.474925][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.474927][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.474931][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.474935][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.474938][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.474942][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.474945][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.474950][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.474955][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.474960][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.474963][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.474966][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.474969][    C0]  </IRQ>
[   17.474970][    C0]  <TASK>
[ 17.474972][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.474975][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.474979][ 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
[   17.474981][    C0] RSP: 0018:ffffffffaf807df8 EFLAGS: 00000242
[   17.474986][    C0] RAX: 00000000000702cd RBX: 1ffffffff5f00fc3 RCX: ffffffffaeb905d9
[   17.474988][    C0] RDX: 0000000000000000 RSI: ffffffffaf68f4e4 RDI: ffffffffaee53be0
[   17.474990][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005e866fa
[   17.474992][    C0] R10: ffff88802f4337d3 R11: ffffffffaf811288 R12: 0000000000000000
[   17.474993][    C0] R13: ffffffffaf81f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.474998][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.475002][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.475005][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.475007][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.475011][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.475014][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.475023][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.475026][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.475029][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.475033][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.475037][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 17.475043][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 17.475047][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.495682][    C0] RCU nest depth: 0, expected: 0
| [   17.496018][    C0] INFO: lockdep is turned off.
| [   17.496227][    C0] Preemption disabled at:
| [ 17.496228][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   17.496847][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.496849][    C0] Call Trace:
[   17.496851][    C0]  <IRQ>
[ 17.496853][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.496859][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 17.496868][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.496873][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.496876][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.496880][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.496885][ 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) 
[ 17.496892][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.496895][ 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) 
[ 17.496898][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.496905][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.496909][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.496914][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.496918][ 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) 
[ 17.496923][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.496926][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.496930][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.496934][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.496939][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.496943][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.496946][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.496948][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.496951][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.496955][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.496957][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.496959][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.496962][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.496970][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.496974][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.496978][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.496980][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.496984][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.496990][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.496993][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.496998][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.497001][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.497005][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.497010][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.497015][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.497018][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.497021][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.497024][    C0]  </IRQ>
[   17.497025][    C0]  <TASK>
[ 17.497027][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.497030][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.497034][ 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
[   17.497036][    C0] RSP: 0018:ffffffffaf807df8 EFLAGS: 00000242
[   17.497040][    C0] RAX: 00000000000702cd RBX: 1ffffffff5f00fc3 RCX: ffffffffaeb905d9
[   17.497041][    C0] RDX: 0000000000000000 RSI: ffffffffaf68f4e4 RDI: ffffffffaee53be0
[   17.497043][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005e866fa
[   17.497045][    C0] R10: ffff88802f4337d3 R11: ffffffffaf811288 R12: 0000000000000000
[   17.497047][    C0] R13: ffffffffaf81f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.497051][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.497055][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.497058][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.497063][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.497066][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.497070][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.497075][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.497079][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.497082][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.497085][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.497089][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 17.497094][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 17.497098][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   20.015962][    C2] INFO: lockdep is turned off.
| [   20.016153][    C2] Preemption disabled at:
| [ 20.016155][ C2] 0x0 
| [   20.016521][    C2] Tainted: [W]=WARN
[   20.016522][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.016524][    C2] Call Trace:
[   20.016526][    C2]  <IRQ>
[ 20.016528][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.016537][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 20.016544][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 20.016548][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 20.016552][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 20.016556][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.016561][ 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) 
[ 20.016566][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 20.016569][ 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) 
[ 20.016573][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 20.016581][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 20.016584][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 20.016590][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 20.016593][ 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) 
[ 20.016599][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.016602][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 20.016608][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.016612][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 20.016617][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.016621][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.016625][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.016627][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.016630][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.016634][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 20.016636][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.016638][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 20.016642][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 20.016647][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 20.016655][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.016659][ C2] __put_net (net/core/net_namespace.c:732) 
[ 20.016663][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 20.016667][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.016670][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.016675][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 20.016678][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 20.016690][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.016696][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 20.016700][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 20.016706][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.016709][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.016711][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   20.016715][    C2]  </IRQ>
[   20.016716][    C2]  <TASK>
[ 20.016718][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.016721][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.016725][ 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
[   20.016728][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   20.016732][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffffaeb905d9
[   20.016734][    C2] RDX: ffffed1005ea66fb RSI: ffffffffaee53b60 RDI: ffffffffac38d18f
[   20.016736][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1005ea66fa
[   20.016738][    C2] R10: ffff88802f5337d3 R11: ffffffffb24ecde8 R12: 0000000000000000
[   20.016740][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 20.016744][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 20.016747][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.016751][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.016753][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.016756][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.016759][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 20.016763][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 20.016767][ C2] do_idle (kernel/sched/idle.c:325) 
[ 20.016771][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.016774][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 20.016776][ 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