======================================
| [   17.566407][    C0] 1 lock held by swapper/0/0:
| [ 17.566624][ C0] #0: ffffffffb4174480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   17.566996][    C0]
| [   17.566996][    C0] stack backtrace:
[   17.567265][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.567268][    C0] Call Trace:
[   17.567270][    C0]  <IRQ>
[ 17.567272][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.567280][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 17.567287][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 17.567291][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 17.567298][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.567302][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 17.567307][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 17.567311][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 17.567315][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 17.567320][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 17.567324][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.567328][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.567335][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 17.567338][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.567343][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.567346][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.567350][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 17.567354][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.567357][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.567363][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.567366][ 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) 
[ 17.567373][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.567376][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.567379][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.567382][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.567388][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.567393][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.567396][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.567398][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.567401][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.567407][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.567410][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.567413][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.567415][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.567421][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.567425][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 17.567429][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.567432][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.567436][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 17.567440][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.567444][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.567448][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 17.567452][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.567456][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.567460][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.567465][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.567467][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.567469][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.567473][    C0]  </IRQ>
[   17.567474][    C0]  <TASK>
[ 17.567476][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.567479][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.567483][ 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
[   17.567486][    C0] RSP: 0000:ffffffffb3e07df8 EFLAGS: 00000246
[   17.567490][    C0] RAX: 000000000007687d RBX: 1ffffffff67c0fc3 RCX: ffffffffb3155a19
[   17.567493][    C0] RDX: 0000000000000000 RSI: ffffffffb3c85f31 RDI: ffffffffb3450ce0
[   17.567495][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   17.567496][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   17.567498][    C0] R13: ffffffffb3e1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.567503][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.567508][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.567510][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.567513][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.567516][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.567521][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 17.567529][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.567533][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.567536][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.567539][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.567543][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 17.567548][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 17.567552][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.586261][    C0] RCU nest depth: 0, expected: 0
| [   17.586445][    C0] INFO: lockdep is turned off.
| [   17.586747][    C0] Preemption disabled at:
| [ 17.586749][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   17.587190][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.587193][    C0] Call Trace:
[   17.587195][    C0]  <IRQ>
[ 17.587197][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.587203][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 17.587210][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.587214][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.587217][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.587223][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.587230][ 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) 
[ 17.587235][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.587237][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.587242][ 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) 
[ 17.587246][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.587249][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.587255][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.587258][ 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) 
[ 17.587265][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.587270][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.587273][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.587277][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.587282][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.587286][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.587289][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.587291][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.587294][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.587299][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.587302][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.587305][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.587307][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.587314][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.587318][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 17.587321][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.587325][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.587328][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 17.587334][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.587338][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.587342][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 17.587346][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.587350][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.587354][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.587359][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.587362][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.587364][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.587367][    C0]  </IRQ>
[   17.587368][    C0]  <TASK>
[ 17.587370][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.587372][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.587376][ 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
[   17.587379][    C0] RSP: 0000:ffffffffb3e07df8 EFLAGS: 00000246
[   17.587383][    C0] RAX: 000000000007687d RBX: 1ffffffff67c0fc3 RCX: ffffffffb3155a19
[   17.587385][    C0] RDX: 0000000000000000 RSI: ffffffffb3c85f31 RDI: ffffffffb3450ce0
[   17.587387][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   17.587389][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   17.587390][    C0] R13: ffffffffb3e1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.587394][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.587400][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.587402][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.587404][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.587408][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.587412][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 17.587421][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.587425][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.587429][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.587432][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.587436][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 17.587440][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 17.587444][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   20.014795][    C3] INFO: lockdep is turned off.
| [   20.014956][    C3] Preemption disabled at:
| [ 20.014958][ C3] fpu__clear_user_states (arch/x86/kernel/fpu/core.c:765 (discriminator 3)) 
| [   20.015300][    C3] Tainted: [W]=WARN
[   20.015302][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.015304][    C3] Call Trace:
[   20.015306][    C3]  <IRQ>
[ 20.015309][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.015317][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 20.015325][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 20.015330][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 20.015333][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 20.015338][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.015346][ 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) 
[ 20.015352][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 20.015354][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 20.015360][ 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) 
[ 20.015364][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 20.015367][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 20.015374][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 20.015377][ 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) 
[ 20.015384][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 20.015389][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 20.015392][ C3] ? __local_bh_enable_ip (kernel/softirq.c:407) 
[ 20.015396][ C3] ? handle_signal (arch/x86/kernel/signal.c:310) 
[ 20.015402][ C3] ? arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) 
[ 20.015405][ C3] ? syscall_exit_to_user_mode (kernel/entry/common.c:113 ./include/linux/entry-common.h:329 kernel/entry/common.c:207 kernel/entry/common.c:218) 
[ 20.015411][ C3] ? do_syscall_64 (arch/x86/entry/syscall_64.c:113) 
[ 20.015416][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 20.015420][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2392) 
[ 20.015426][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 20.015431][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.015436][ C3] __put_net (net/core/net_namespace.c:732) 
[ 20.015439][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 20.015443][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 20.015447][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 20.015452][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 20.015456][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.015459][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 20.015466][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 20.015470][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 20.015474][ 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:780) 
[ 20.015478][ C3] do_softirq (kernel/softirq.c:480 kernel/softirq.c:467) 
[   20.015480][    C3]  </IRQ>
[   20.015481][    C3]  <TASK>
[ 20.015483][ C3] __local_bh_enable_ip (kernel/softirq.c:407) 
[ 20.015486][ C3] handle_signal (arch/x86/kernel/signal.c:310) 
[ 20.015489][ C3] arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) 
[ 20.015493][ C3] ? __pfx_arch_do_signal_or_restart (arch/x86/kernel/signal.c:334) 
[ 20.015498][ C3] ? __x64_sys_rt_sigsuspend (kernel/signal.c:4858 kernel/signal.c:4848 kernel/signal.c:4848) 
[ 20.015504][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.015508][ C3] syscall_exit_to_user_mode (kernel/entry/common.c:113 ./include/linux/entry-common.h:329 kernel/entry/common.c:207 kernel/entry/common.c:218) 
[ 20.015512][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:113) 
[ 20.015516][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.015518][    C3] RIP: 0033:0x56319a522270
[ 20.015527][ C3] Code: Unable to access opcode bytes at 0x56319a522246.

Code starting with the faulting instruction
===========================================
[   20.015529][    C3] RSP: 002b:00007fffc202cf78 EFLAGS: 00000246 ORIG_RAX: 0000000000000082
[   20.015533][    C3] RAX: 0000000000000000 RBX: 00007fffc202dcb8 RCX: 00007f03e799d06c
[   20.015535][    C3] RDX: 00007fffc202cf80 RSI: 00007fffc202d0b0 RDI: 0000000000000011
[   20.015537][    C3] RBP: 00007fffc202dd60 R08: 00007fffc202dd60 R09: 0000000000000000
[   20.015539][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffc202dce0


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
fpu__clear_user_states:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal