======================================
| [   14.745799][    C0] 1 lock held by swapper/0/0:
| [ 14.746005][ C0] #0: ffffffffae574480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.746372][    C0]
| [   14.746372][    C0] stack backtrace:
[   14.746629][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.746631][    C0] Call Trace:
[   14.746633][    C0]  <IRQ>
[ 14.746635][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.746640][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.746645][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.746649][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 14.746654][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.746659][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.746663][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.746667][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.746671][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.746676][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.746680][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.746684][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.746689][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.746693][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.746697][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.746700][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.746703][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 14.746707][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.746710][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.746715][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.746718][ 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) 
[ 14.746723][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.746726][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.746729][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.746732][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.746735][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.746739][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.746742][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.746744][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.746746][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.746751][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.746753][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.746756][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.746759][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.746764][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.746767][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.746771][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.746774][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.746778][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.746782][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.746786][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.746789][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.746792][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.746797][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.746800][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.746805][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.746807][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.746809][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.746813][    C0]  </IRQ>
[   14.746813][    C0]  <TASK>
[ 14.746815][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.746818][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.746822][ 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
[   14.746825][    C0] RSP: 0018:ffffffffae207df8 EFLAGS: 00000242
[   14.746828][    C0] RAX: 000000000006b619 RBX: 1ffffffff5c40fc3 RCX: ffffffffad555a19
[   14.746830][    C0] RDX: 0000000000000000 RSI: ffffffffae085f31 RDI: ffffffffad850ce0
[   14.746832][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   14.746834][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.746835][    C0] R13: ffffffffae21f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.746839][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.746845][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.746847][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.746849][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.746853][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.746857][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.746863][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.746867][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.746870][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.746873][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.746877][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 14.746881][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 14.746885][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.764576][    C0] RCU nest depth: 0, expected: 0
| [   14.764891][    C0] INFO: lockdep is turned off.
| [   14.765081][    C0] Preemption disabled at:
| [ 14.765083][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   14.765639][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.765641][    C0] Call Trace:
[   14.765642][    C0]  <IRQ>
[ 14.765644][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.765648][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 14.765654][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.765657][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.765660][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 14.765663][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.765668][ 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) 
[ 14.765672][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 14.765675][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.765678][ 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) 
[ 14.765685][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.765688][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.765692][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.765695][ 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) 
[ 14.765699][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.765703][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.765705][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.765708][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.765712][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.765716][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.765719][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.765721][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.765723][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.765727][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.765730][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.765733][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.765736][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.765741][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.765744][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.765748][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.765751][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.765754][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.765759][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.765763][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.765767][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.765770][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.765774][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.765777][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.765782][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.765784][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.765786][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.765789][    C0]  </IRQ>
[   14.765790][    C0]  <TASK>
[ 14.765792][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.765795][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.765798][ 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
[   14.765801][    C0] RSP: 0018:ffffffffae207df8 EFLAGS: 00000242
[   14.765804][    C0] RAX: 000000000006b619 RBX: 1ffffffff5c40fc3 RCX: ffffffffad555a19
[   14.765806][    C0] RDX: 0000000000000000 RSI: ffffffffae085f31 RDI: ffffffffad850ce0
[   14.765808][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   14.765810][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.765811][    C0] R13: ffffffffae21f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.765815][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.765821][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.765823][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.765825][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.765829][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.765833][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.765838][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.765842][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.765846][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.765849][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.765852][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 14.765856][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 14.765860][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.546064][    C1] INFO: lockdep is turned off.
| [   16.546229][    C1] Preemption disabled at:
| [ 16.546230][ C1] handle_softirqs (kernel/softirq.c:553) 
| [   16.546579][    C1] Tainted: [W]=WARN
[   16.546581][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.546583][    C1] Call Trace:
[   16.546585][    C1]  <TASK>
[ 16.546587][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.546597][ C1] __might_resched (kernel/sched/core.c:8819) 
[ 16.546608][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.546615][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.546620][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 16.546630][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.546643][ 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) 
[ 16.546651][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 16.546654][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.546659][ 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) 
[ 16.546663][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.546666][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.546673][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.546676][ 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) 
[ 16.546686][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.546692][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.546695][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.546699][ C1] ? kthread (kernel/kthread.c:464) 
[ 16.546704][ C1] ? ret_from_fork (arch/x86/kernel/process.c:153) 
[ 16.546711][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 16.546717][ 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) 
[ 16.546722][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2392) 
[ 16.546726][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.546731][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.546736][ C1] __put_net (net/core/net_namespace.c:732) 
[ 16.546739][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 16.546743][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.546746][ C1] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.546751][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.546756][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.546761][ C1] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.546764][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 16.546768][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 16.546771][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 16.546774][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.546777][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 16.546780][ C1] kthread (kernel/kthread.c:464) 
[ 16.546784][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.546786][ C1] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 16.546789][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 16.546795][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.546798][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.546802][ C1] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 16.546805][ C1] ? __pfx_kthread (kernel/kthread.c:413) 


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