======================================
| [   15.796669][    C0] 1 lock held by swapper/0/0:
| [ 15.796901][ C0] #0: ffffffffa93774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.797324][    C0]
| [   15.797324][    C0] stack backtrace:
[   15.797635][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.797637][    C0] Call Trace:
[   15.797639][    C0]  <IRQ>
[ 15.797640][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.797646][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.797651][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.797655][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.797659][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.797664][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.797670][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.797674][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.797677][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.797680][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.797684][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.797687][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.797691][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.797696][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.797699][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.797703][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.797706][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.797710][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 15.797714][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.797717][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 15.797723][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.797727][ 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) 
[ 15.797732][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.797735][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.797738][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.797741][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.797746][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.797750][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.797754][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.797756][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.797759][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.797763][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.797765][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.797767][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.797770][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.797776][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.797779][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.797783][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.797786][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.797789][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.797793][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.797797][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.797801][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.797804][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.797808][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.797813][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.797818][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.797821][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.797824][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.797827][    C0]  </IRQ>
[   15.797829][    C0]  <TASK>
[ 15.797830][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.797833][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.797837][ C0] Code: a2 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 47 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:	a2 b5 00 c3 cc cc cc 	movabs %al,0xfccccccccc300b5
   7:	cc 0f 
   9:	1f                   	(bad)
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  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 47 10 00 	verw   0x104783(%rip)        # 0x1047ab
  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
[   15.797840][    C0] RSP: 0018:ffffffffa9007df8 EFLAGS: 00000246
[   15.797843][    C0] RAX: 0000000000070beb RBX: 1ffffffff5200fc3 RCX: ffffffffa838f5d9
[   15.797845][    C0] RDX: 0000000000000000 RSI: ffffffffa8e8f4e4 RDI: ffffffffa8653be0
[   15.797847][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ec66fa
[   15.797848][    C0] R10: ffff88802f6337d3 R11: ffffffffa9011288 R12: 0000000000000000
[   15.797850][    C0] R13: ffffffffa901f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.797854][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.797859][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.797861][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.797864][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.797867][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.797871][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.797876][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.797879][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.797882][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.797886][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.797890][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.797894][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.797898][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.819835][    C0] RCU nest depth: 0, expected: 0
| [   15.820050][    C0] INFO: lockdep is turned off.
| [   15.820268][    C0] Preemption disabled at:
| [ 15.820270][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   15.820904][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.820906][    C0] Call Trace:
[   15.820908][    C0]  <IRQ>
[ 15.820910][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.820917][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 15.820923][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.820927][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.820931][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.820934][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.820939][ 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) 
[ 15.820945][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.820948][ 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) 
[ 15.820951][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.820957][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.820960][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 15.820965][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.820969][ 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) 
[ 15.820974][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.820977][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.820980][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.820984][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.820989][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.820992][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.820995][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.820998][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.821001][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.821004][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.821006][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.821008][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.821012][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.821019][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.821023][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.821027][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.821029][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.821033][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.821038][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.821041][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.821046][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.821048][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.821053][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.821058][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.821063][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.821066][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.821069][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.821072][    C0]  </IRQ>
[   15.821074][    C0]  <TASK>
[ 15.821075][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.821078][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.821082][ C0] Code: a2 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 47 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:	a2 b5 00 c3 cc cc cc 	movabs %al,0xfccccccccc300b5
   7:	cc 0f 
   9:	1f                   	(bad)
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  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 47 10 00 	verw   0x104783(%rip)        # 0x1047ab
  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
[   15.821085][    C0] RSP: 0018:ffffffffa9007df8 EFLAGS: 00000246
[   15.821088][    C0] RAX: 0000000000070beb RBX: 1ffffffff5200fc3 RCX: ffffffffa838f5d9
[   15.821090][    C0] RDX: 0000000000000000 RSI: ffffffffa8e8f4e4 RDI: ffffffffa8653be0
[   15.821091][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ec66fa
[   15.821093][    C0] R10: ffff88802f6337d3 R11: ffffffffa9011288 R12: 0000000000000000
[   15.821095][    C0] R13: ffffffffa901f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.821098][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.821103][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.821106][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.821108][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.821112][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.821115][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.821121][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.821124][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.821127][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.821130][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.821134][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.821139][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.821142][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.490969][    C3] INFO: lockdep is turned off.
| [   17.491144][    C3] Preemption disabled at:
| [ 17.491146][ C3] fpu__clear_user_states (arch/x86/kernel/fpu/core.c:799 (discriminator 3)) 
| [   17.491527][    C3] Tainted: [W]=WARN
[   17.491528][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.491531][    C3] Call Trace:
[   17.491534][    C3]  <IRQ>
[ 17.491536][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.491546][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 17.491555][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.491560][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.491563][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.491569][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.491575][ 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) 
[ 17.491583][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.491586][ 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) 
[ 17.491589][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.491596][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.491600][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 17.491608][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.491611][ 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:2376) 
[ 17.491618][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.491622][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.491626][ C3] ? __local_bh_enable_ip (kernel/softirq.c:407) 
[ 17.491632][ C3] ? handle_signal (arch/x86/kernel/signal.c:310) 
[ 17.491639][ C3] ? arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) 
[ 17.491642][ C3] ? exit_to_user_mode_loop (kernel/entry/common.c:113) 
[ 17.491647][ C3] ? do_syscall_64 (./include/linux/entry-common.h:330 ./include/linux/entry-common.h:414 ./include/linux/entry-common.h:449 arch/x86/entry/syscall_64.c:100) 
[ 17.491652][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 17.491656][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 17.491661][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.491667][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.491672][ C3] __put_net (net/core/net_namespace.c:732) 
[ 17.491677][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.491681][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.491683][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.491689][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.491694][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.491697][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.491706][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.491712][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 17.491717][ C3] ? fpu__clear_user_states (./include/linux/bottom_half.h:33 ./arch/x86/include/asm/fpu/api.h:77 arch/x86/kernel/fpu/core.c:814) 
[ 17.491720][ C3] do_softirq (kernel/softirq.c:480 kernel/softirq.c:467) 
[   17.491723][    C3]  </IRQ>
[   17.491724][    C3]  <TASK>
[ 17.491726][ C3] __local_bh_enable_ip (kernel/softirq.c:407) 
[ 17.491729][ C3] handle_signal (arch/x86/kernel/signal.c:310) 
[ 17.491734][ C3] arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) 
[ 17.491738][ C3] ? __pfx_arch_do_signal_or_restart (arch/x86/kernel/signal.c:334) 
[ 17.491744][ C3] ? __x64_sys_rt_sigsuspend (kernel/signal.c:4858 kernel/signal.c:4848 kernel/signal.c:4848) 
[ 17.491749][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.491753][ C3] exit_to_user_mode_loop (kernel/entry/common.c:113) 
[ 17.491757][ C3] do_syscall_64 (./include/linux/entry-common.h:330 ./include/linux/entry-common.h:414 ./include/linux/entry-common.h:449 arch/x86/entry/syscall_64.c:100) 
[ 17.491760][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.491763][    C3] RIP: 0033:0x560720c28270
[ 17.491773][ C3] Code: Unable to access opcode bytes at 0x560720c28246.

Code starting with the faulting instruction
===========================================
[   17.491774][    C3] RSP: 002b:00007ffd4bce3078 EFLAGS: 00000246 ORIG_RAX: 0000000000000082
[   17.491778][    C3] RAX: 0000000000000000 RBX: 00007ffd4bce3db8 RCX: 00007f1995f6d06c
[   17.491780][    C3] RDX: 00007ffd4bce3080 RSI: 00007ffd4bce31b0 RDI: 0000000000000011
[   17.491782][    C3] RBP: 00007ffd4bce3e60 R08: 00007ffd4bce3e60 R09: 0000000000000000
[   17.491784][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd4bce3de0


Finger prints:
fpu__clear_user_states:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal
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