======================================
| [   15.462586][    C0] 1 lock held by swapper/0/0:
| [ 15.462810][ C0] #0: ffffffff951749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   15.463209][    C0]
| [   15.463209][    C0] stack backtrace:
[   15.463487][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.463490][    C0] Call Trace:
[   15.463492][    C0]  <IRQ>
[ 15.463494][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.463501][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 15.463508][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 15.463512][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.463518][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 15.463522][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 15.463526][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 15.463531][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 15.463534][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 15.463540][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 15.463543][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.463546][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.463553][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.463555][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.463559][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.463562][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.463564][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 15.463567][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.463571][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.463577][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.463581][ 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:2366) 
[ 15.463587][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.463590][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.463593][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.463596][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.463602][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.463606][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.463609][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.463611][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.463614][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.463620][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.463623][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.463626][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.463629][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.463635][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.463640][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.463644][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.463647][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.463651][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.463656][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.463660][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.463664][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.463667][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.463672][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.463676][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.463681][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.463684][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.463686][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.463690][    C0]  </IRQ>
[   15.463691][    C0]  <TASK>
[ 15.463692][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.463695][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.463700][ C0] Code: 60 b8 00 e9 c3 57 02 00 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 c3 75 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:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   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 c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  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
[   15.463703][    C0] RSP: 0018:ffffffff94e07df8 EFLAGS: 00000246
[   15.463707][    C0] RAX: 000000000006e9e7 RBX: 1ffffffff29c0fc3 RCX: ffffffff9415ba19
[   15.463709][    C0] RDX: 0000000000000000 RSI: ffffffff94c87785 RDI: ffffffff94451260
[   15.463711][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   15.463712][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   15.463714][    C0] R13: ffffffff94e1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.463718][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.463723][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.463725][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.463728][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.463732][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.463736][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.463743][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.463748][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.463751][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.463755][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.463759][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 15.463764][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 15.463768][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.483796][    C0] RCU nest depth: 0, expected: 0
| [   15.484009][    C0] INFO: lockdep is turned off.
| [   15.484220][    C0] Preemption disabled at:
| [ 15.484221][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   15.484709][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.484711][    C0] Call Trace:
[   15.484713][    C0]  <IRQ>
[ 15.484715][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.484721][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 15.484729][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.484733][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.484736][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.484741][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.484748][ 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) 
[ 15.484754][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.484757][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.484761][ 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) 
[ 15.484766][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.484769][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.484774][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.484777][ 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:2366) 
[ 15.484783][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.484788][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.484791][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.484795][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.484801][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.484805][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.484808][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.484811][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.484813][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.484818][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.484822][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.484825][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.484827][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.484838][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.484842][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.484846][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.484849][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.484852][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.484858][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.484861][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.484866][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.484869][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.484874][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.484879][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.484884][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.484887][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.484889][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.484893][    C0]  </IRQ>
[   15.484894][    C0]  <TASK>
[ 15.484896][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.484899][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.484903][ C0] Code: 60 b8 00 e9 c3 57 02 00 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 c3 75 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:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   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 c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  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
[   15.484905][    C0] RSP: 0018:ffffffff94e07df8 EFLAGS: 00000246
[   15.484908][    C0] RAX: 000000000006e9e7 RBX: 1ffffffff29c0fc3 RCX: ffffffff9415ba19
[   15.484911][    C0] RDX: 0000000000000000 RSI: ffffffff94c87785 RDI: ffffffff94451260
[   15.484913][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   15.484914][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   15.484916][    C0] R13: ffffffff94e1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.484920][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.484925][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.484927][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.484929][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.484934][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.484938][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.484945][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.484949][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.484952][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.484956][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.484960][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 15.484965][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 15.484969][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.184022][    C1] INFO: lockdep is turned off.
| [   17.184199][    C1] Preemption disabled at:
| [ 17.184201][ C1] handle_softirqs (kernel/softirq.c:553) 
| [   17.184607][    C1] Tainted: [W]=WARN
[   17.184608][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.184610][    C1] Call Trace:
[   17.184613][    C1]  <TASK>
[ 17.184615][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.184624][ C1] __might_resched (kernel/sched/core.c:8819) 
[ 17.184632][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.184638][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.184641][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.184648][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.184656][ 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) 
[ 17.184662][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.184665][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.184670][ 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) 
[ 17.184683][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.184687][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.184694][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.184697][ 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:2366) 
[ 17.184704][ C1] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.184709][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.184712][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 17.184717][ C1] ? kthread (kernel/kthread.c:464) 
[ 17.184722][ C1] ? ret_from_fork (arch/x86/kernel/process.c:153) 
[ 17.184726][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 17.184733][ C1] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) 
[ 17.184739][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2392) 
[ 17.184743][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.184749][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.184754][ C1] __put_net (net/core/net_namespace.c:732) 
[ 17.184758][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.184762][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.184765][ C1] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.184770][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.184774][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.184778][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.184785][ C1] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.184789][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 17.184793][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 17.184796][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 17.184799][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 17.184802][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 17.184805][ C1] kthread (kernel/kthread.c:464) 
[ 17.184809][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.184812][ C1] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 17.184814][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.184817][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.184820][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.184824][ C1] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 17.184826][ C1] ? __pfx_kthread (kernel/kthread.c:413) 


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