======================================
| [   20.315032][    C0] 1 lock held by swapper/0/0:
| [ 20.315238][ C0] #0: ffffffff917749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   20.315633][    C0]
| [   20.315633][    C0] stack backtrace:
[   20.315895][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.315897][    C0] Call Trace:
[   20.315899][    C0]  <IRQ>
[ 20.315901][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.315907][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 20.315914][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 20.315918][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 20.315923][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 20.315927][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 20.315931][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 20.315935][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 20.315939][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 20.315944][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 20.315947][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 20.315951][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.315956][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 20.315958][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 20.315961][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 20.315965][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 20.315968][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 20.315971][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 20.315974][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 20.315979][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 20.315983][ 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) 
[ 20.315988][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 20.315991][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 20.315994][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.315996][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 20.316001][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.316005][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 20.316008][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 20.316010][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.316013][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.316018][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 20.316021][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.316024][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 20.316026][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 20.316033][ C0] __put_net (net/core/net_namespace.c:732) 
[ 20.316037][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 20.316041][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 20.316044][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 20.316048][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 20.316052][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 20.316056][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.316059][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 20.316063][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.316067][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 20.316071][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 20.316076][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.316078][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.316081][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   20.316084][    C0]  </IRQ>
[   20.316085][    C0]  <TASK>
[ 20.316087][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.316089][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 20.316093][ 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
[   20.316096][    C0] RSP: 0018:ffffffff91407df8 EFLAGS: 00000246
[   20.316099][    C0] RAX: 0000000000069d81 RBX: 1ffffffff2280fc3 RCX: ffffffff9075ba19
[   20.316101][    C0] RDX: 0000000000000000 RSI: ffffffff91287785 RDI: ffffffff90a51260
[   20.316103][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   20.316105][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   20.316106][    C0] R13: ffffffff9141f240 R14: dffffc0000000000 R15: 0000000000014770
[ 20.316110][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 20.316115][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 20.316117][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.316120][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.316124][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 20.316128][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 20.316135][ C0] do_idle (kernel/sched/idle.c:325) 
[ 20.316139][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.316142][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 20.316145][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 20.316150][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 20.316154][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 20.316158][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   20.335032][    C0] RCU nest depth: 0, expected: 0
| [   20.335225][    C0] INFO: lockdep is turned off.
| [   20.335423][    C0] Preemption disabled at:
| [ 20.335424][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   20.335999][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.336001][    C0] Call Trace:
[   20.336002][    C0]  <IRQ>
[ 20.336004][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.336010][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 20.336016][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 20.336020][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 20.336022][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 20.336027][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.336033][ 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) 
[ 20.336037][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 20.336040][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 20.336044][ 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) 
[ 20.336049][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 20.336052][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 20.336056][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 20.336059][ 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) 
[ 20.336064][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 20.336069][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 20.336071][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.336075][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 20.336079][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.336083][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 20.336086][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 20.336088][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.336091][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.336095][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 20.336098][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.336101][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 20.336104][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 20.336111][ C0] __put_net (net/core/net_namespace.c:732) 
[ 20.336115][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 20.336118][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 20.336121][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 20.336125][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 20.336130][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 20.336134][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.336138][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 20.336142][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.336146][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 20.336150][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 20.336155][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.336157][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.336160][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   20.336163][    C0]  </IRQ>
[   20.336164][    C0]  <TASK>
[ 20.336166][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.336169][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 20.336173][ 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
[   20.336176][    C0] RSP: 0018:ffffffff91407df8 EFLAGS: 00000246
[   20.336179][    C0] RAX: 0000000000069d81 RBX: 1ffffffff2280fc3 RCX: ffffffff9075ba19
[   20.336181][    C0] RDX: 0000000000000000 RSI: ffffffff91287785 RDI: ffffffff90a51260
[   20.336183][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   20.336184][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   20.336186][    C0] R13: ffffffff9141f240 R14: dffffc0000000000 R15: 0000000000014770
[ 20.336190][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 20.336194][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 20.336197][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.336199][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.336203][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 20.336207][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 20.336213][ C0] do_idle (kernel/sched/idle.c:325) 
[ 20.336217][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.336221][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 20.336224][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 20.336229][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 20.336233][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 20.336237][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   26.186967][    C3] INFO: lockdep is turned off.
| [   26.187142][    C3] Preemption disabled at:
| [ 26.187143][ C3] 0x0 
| [   26.187460][    C3] Tainted: [W]=WARN
[   26.187462][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   26.187464][    C3] Call Trace:
[   26.187466][    C3]  <IRQ>
[ 26.187468][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 26.187477][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 26.187484][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 26.187489][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 26.187492][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 26.187496][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 26.187502][ 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) 
[ 26.187507][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 26.187510][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 26.187515][ 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) 
[ 26.187519][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 26.187523][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 26.187527][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 26.187531][ 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:2366) 
[ 26.187536][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 26.187540][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 26.187543][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 26.187547][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 26.187551][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 26.187555][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 26.187558][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 26.187560][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 26.187563][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 26.187568][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 26.187571][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 26.187574][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 26.187579][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 26.187584][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 26.187588][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 26.187593][ C3] __put_net (net/core/net_namespace.c:732) 
[ 26.187596][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 26.187600][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 26.187603][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 26.187609][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 26.187613][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 26.187617][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 26.187624][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 26.187628][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 26.187632][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 26.187635][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 26.187637][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   26.187640][    C3]  </IRQ>
[   26.187642][    C3]  <TASK>
[ 26.187643][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 26.187646][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 26.187650][ C3] 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
[   26.187653][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   26.187657][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffff9075ba19
[   26.187659][    C3] RDX: ffffed1006c3667b RSI: ffffffff90a511e0 RDI: ffffffff8df8633f
[   26.187661][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c3667a
[   26.187662][    C3] R10: ffff8880361b33d3 R11: ffff8880092b0558 R12: 0000000000000000
[   26.187664][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 26.187668][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 26.187671][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 26.187675][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 26.187678][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 26.187680][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 26.187684][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 26.187688][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 26.187694][ C3] do_idle (kernel/sched/idle.c:325) 
[ 26.187698][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 26.187702][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 26.187705][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


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