======================================
| [   14.053690][    C0] 1 lock held by swapper/0/0:
| [ 14.053887][ C0] #0: ffffffffa0f74480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.054230][    C0]
| [   14.054230][    C0] stack backtrace:
[   14.054474][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.054477][    C0] Call Trace:
[   14.054478][    C0]  <IRQ>
[ 14.054480][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.054485][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.054490][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.054494][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 14.054499][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.054504][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.054508][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.054512][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.054516][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.054521][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.054524][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.054529][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.054534][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.054537][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.054541][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.054544][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.054547][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 14.054551][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.054554][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.054559][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.054562][ 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:2333) 
[ 14.054567][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.054570][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.054573][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.054576][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.054580][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.054583][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.054586][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.054588][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.054590][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.054595][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.054598][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.054601][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.054603][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.054608][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.054612][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.054615][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.054618][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.054622][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.054626][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.054630][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.054633][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.054636][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.054641][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.054644][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.054648][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.054651][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.054653][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.054656][    C0]  </IRQ>
[   14.054657][    C0]  <TASK>
[ 14.054659][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.054662][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.054666][ C0] Code: b0 b8 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 a3 d0 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	b0 b8                	mov    $0xb8,%al
   2:	00 c3                	add    %al,%bl
   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 a3 d0 13 00 	verw   0x13d0a3(%rip)        # 0x13d0cb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  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:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   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
[   14.054669][    C0] RSP: 0018:ffffffffa0c07df8 EFLAGS: 00000242
[   14.054672][    C0] RAX: 000000000006f561 RBX: 1ffffffff4180fc3 RCX: ffffffff9ff55a19
[   14.054674][    C0] RDX: 0000000000000000 RSI: ffffffffa0a85f31 RDI: ffffffffa0250ce0
[   14.054676][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   14.054677][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.054679][    C0] R13: ffffffffa0c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.054683][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.054688][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.054690][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.054693][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.054696][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.054701][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.054707][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.054711][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.054714][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.054717][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.054721][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 14.054725][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 14.054728][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.071806][    C0] RCU nest depth: 0, expected: 0
| [   14.071989][    C0] INFO: lockdep is turned off.
| [   14.072285][    C0] Preemption disabled at:
| [ 14.072287][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   14.072701][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.072702][    C0] Call Trace:
[   14.072704][    C0]  <IRQ>
[ 14.072705][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.072713][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 14.072719][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.072722][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.072725][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 14.072729][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.072734][ 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) 
[ 14.072739][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 14.072742][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.072745][ 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) 
[ 14.072749][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.072752][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.072757][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.072760][ 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:2333) 
[ 14.072764][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.072768][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.072771][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.072774][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.072778][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.072782][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.072785][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.072787][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.072789][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.072793][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.072796][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.072799][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.072801][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.072808][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.072810][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.072814][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.072817][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.072821][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.072825][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.072829][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.072833][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.072837][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.072841][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.072844][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.072849][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.072851][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.072853][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.072857][    C0]  </IRQ>
[   14.072858][    C0]  <TASK>
[ 14.072859][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.072862][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.072865][ C0] Code: b0 b8 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 a3 d0 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	b0 b8                	mov    $0xb8,%al
   2:	00 c3                	add    %al,%bl
   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 a3 d0 13 00 	verw   0x13d0a3(%rip)        # 0x13d0cb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  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:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   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
[   14.072868][    C0] RSP: 0018:ffffffffa0c07df8 EFLAGS: 00000242
[   14.072871][    C0] RAX: 000000000006f561 RBX: 1ffffffff4180fc3 RCX: ffffffff9ff55a19
[   14.072873][    C0] RDX: 0000000000000000 RSI: ffffffffa0a85f31 RDI: ffffffffa0250ce0
[   14.072875][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   14.072876][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.072878][    C0] R13: ffffffffa0c1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.072882][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.072887][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.072889][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.072892][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.072895][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.072899][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.072905][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.072909][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.072913][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.072916][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.072920][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 14.072924][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 14.072927][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.625675][    C1] INFO: lockdep is turned off.
| [   15.625850][    C1] Preemption disabled at:
| [ 15.625852][ C1] 0x0 
| [   15.626150][    C1] Tainted: [W]=WARN
[   15.626151][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.626153][    C1] Call Trace:
[   15.626155][    C1]  <IRQ>
[ 15.626157][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.626165][ C1] __might_resched (kernel/sched/core.c:8819) 
[ 15.626171][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.626175][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.626178][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.626182][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.626188][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.626192][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.626195][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.626199][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.626204][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.626207][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.626212][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.626215][ C1] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 15.626221][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.626225][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.626228][ C1] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.626232][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.626236][ C1] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.626240][ C1] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.626243][ C1] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.626246][ C1] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.626248][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.626253][ C1] ? do_idle (kernel/sched/idle.c:325) 
[ 15.626256][ C1] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.626259][ C1] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.626264][ C1] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.626268][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 15.626272][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.626277][ C1] __put_net (net/core/net_namespace.c:732) 
[ 15.626280][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 15.626283][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.626287][ C1] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.626292][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.626295][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 15.626300][ C1] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.626305][ C1] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.626309][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 15.626314][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.626316][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.626318][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.626322][    C1]  </IRQ>
[   15.626323][    C1]  <TASK>
[ 15.626324][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.626327][ C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.626331][ C1] Code: b0 b8 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 a3 d0 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	b0 b8                	mov    $0xb8,%al
   2:	00 c3                	add    %al,%bl
   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 a3 d0 13 00 	verw   0x13d0a3(%rip)        # 0x13d0cb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  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:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   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
[   15.626333][    C1] RSP: 0018:ffffc90000137de8 EFLAGS: 00000246
[   15.626337][    C1] RAX: 0000000000000001 RBX: 1ffff92000026fc1 RCX: ffffffff9ff55a19
[   15.626339][    C1] RDX: ffffed1006c1667b RSI: ffffffffa0250c60 RDI: ffffffff9d784d8f
[   15.626341][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c1667a
[   15.626343][    C1] R10: ffff8880360b33d3 R11: ffff8880057d8558 R12: 0000000000000000
[   15.626345][    C1] R13: ffff888001bb0040 R14: dffffc0000000000 R15: 0000000000000000
[ 15.626349][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.626353][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.626357][ C1] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.626359][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.626362][ C1] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.626365][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.626369][ C1] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.626374][ C1] do_idle (kernel/sched/idle.c:325) 
[ 15.626378][ C1] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.626381][ C1] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.626385][ C1] ? __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