======================================
| [   14.850324][    C0] 1 lock held by swapper/0/0:
| [ 14.850550][ C0] #0: ffffffffa6374480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.850934][    C0]
| [   14.850934][    C0] stack backtrace:
[   14.851212][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.851214][    C0] Call Trace:
[   14.851216][    C0]  <IRQ>
[ 14.851218][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.851225][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.851231][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.851234][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 14.851242][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.851246][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.851250][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.851255][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.851258][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.851263][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.851267][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.851271][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.851278][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.851281][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.851285][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.851289][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.851292][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 14.851296][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.851299][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.851305][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.851308][ 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) 
[ 14.851315][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.851319][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.851321][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.851324][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.851330][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.851334][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.851337][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.851339][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.851341][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.851346][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.851349][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.851352][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.851355][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.851360][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.851364][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.851368][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.851372][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.851375][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.851379][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.851383][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.851386][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.851390][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.851395][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.851398][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.851403][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.851405][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.851408][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.851411][    C0]  </IRQ>
[   14.851412][    C0]  <TASK>
[ 14.851414][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.851417][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.851421][ 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
[   14.851424][    C0] RSP: 0018:ffffffffa6007df8 EFLAGS: 00000246
[   14.851428][    C0] RAX: 0000000000070f53 RBX: 1ffffffff4c00fc3 RCX: ffffffffa5355a19
[   14.851430][    C0] RDX: 0000000000000000 RSI: ffffffffa5e85f31 RDI: ffffffffa5650ce0
[   14.851432][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   14.851433][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.851435][    C0] R13: ffffffffa601f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.851439][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.851444][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.851446][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.851449][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.851452][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.851456][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.851464][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.851468][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.851472][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.851475][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.851478][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 14.851483][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 14.851487][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.870293][    C0] RCU nest depth: 0, expected: 0
| [   14.870494][    C0] INFO: lockdep is turned off.
| [   14.870932][    C0] Preemption disabled at:
| [ 14.870934][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   14.871414][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.871416][    C0] Call Trace:
[   14.871418][    C0]  <IRQ>
[ 14.871419][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.871424][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 14.871430][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.871434][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.871437][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 14.871441][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.871447][ 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) 
[ 14.871452][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 14.871454][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.871458][ 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) 
[ 14.871463][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.871466][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.871470][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.871474][ 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) 
[ 14.871478][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.871482][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.871485][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.871488][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.871493][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.871496][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.871499][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.871501][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.871504][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.871508][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.871511][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.871514][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.871517][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.871524][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.871527][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.871531][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.871534][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.871538][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.871543][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.871546][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.871550][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.871554][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.871559][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.871562][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.871567][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.871569][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.871571][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.871575][    C0]  </IRQ>
[   14.871576][    C0]  <TASK>
[ 14.871577][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.871580][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.871584][ 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
[   14.871586][    C0] RSP: 0018:ffffffffa6007df8 EFLAGS: 00000246
[   14.871589][    C0] RAX: 0000000000070f53 RBX: 1ffffffff4c00fc3 RCX: ffffffffa5355a19
[   14.871592][    C0] RDX: 0000000000000000 RSI: ffffffffa5e85f31 RDI: ffffffffa5650ce0
[   14.871593][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   14.871595][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.871597][    C0] R13: ffffffffa601f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.871601][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.871606][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.871608][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.871611][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.871614][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.871619][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.871625][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.871629][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.871633][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.871636][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.871640][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 14.871644][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 14.871648][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.679802][    C3] INFO: lockdep is turned off.
| [   16.679951][    C3] Preemption disabled at:
| [ 16.679953][ C3] handle_softirqs (kernel/softirq.c:553) 
| [   16.680280][    C3] Tainted: [W]=WARN
[   16.680282][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.680283][    C3] Call Trace:
[   16.680286][    C3]  <TASK>
[ 16.680288][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.680297][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 16.680304][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.680309][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.680312][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 16.680318][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.680327][ C3] ? 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) 
[ 16.680333][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 16.680335][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.680341][ C3] ? 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) 
[ 16.680346][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.680349][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.680355][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.680358][ C3] ? __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) 
[ 16.680366][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.680371][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.680374][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.680378][ C3] ? kthread (kernel/kthread.c:464) 
[ 16.680382][ C3] ? ret_from_fork (arch/x86/kernel/process.c:153) 
[ 16.680390][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 16.680397][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) 
[ 16.680401][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2392) 
[ 16.680405][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.680409][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.680414][ C3] __put_net (net/core/net_namespace.c:732) 
[ 16.680418][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 16.680421][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.680424][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.680429][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.680433][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.680437][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.680443][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.680446][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 16.680450][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 16.680453][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 16.680455][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.680458][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 16.680461][ C3] kthread (kernel/kthread.c:464) 
[ 16.680465][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.680467][ C3] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 16.680471][ C3] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 16.680477][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.680481][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.680484][ C3] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 16.680487][ C3] ? __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