======================================
| [   17.070732][    C0] 1 lock held by swapper/0/0:
| [ 17.070983][ C0] #0: ffffffffa45749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   17.071429][    C0]
| [   17.071429][    C0] stack backtrace:
[   17.071740][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.071742][    C0] Call Trace:
[   17.071744][    C0]  <IRQ>
[ 17.071745][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.071752][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 17.071758][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 17.071762][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 17.071769][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.071776][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 17.071783][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 17.071788][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 17.071792][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 17.071798][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 17.071800][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.071804][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.071810][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 17.071812][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.071815][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.071818][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.071821][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 17.071824][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.071827][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.071832][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.071835][ 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) 
[ 17.071840][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.071843][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.071846][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.071848][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.071853][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.071857][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.071860][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.071862][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.071865][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.071870][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.071873][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.071876][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.071879][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.071886][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.071889][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.071893][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.071897][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.071900][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 17.071904][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.071908][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.071912][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 17.071915][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.071920][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.071924][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.071929][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.071931][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.071933][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.071937][    C0]  </IRQ>
[   17.071938][    C0]  <TASK>
[ 17.071939][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.071942][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.071946][ 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
[   17.071949][    C0] RSP: 0018:ffffffffa4207df8 EFLAGS: 00000242
[   17.071952][    C0] RAX: 000000000007c6a7 RBX: 1ffffffff4840fc3 RCX: ffffffffa355ba19
[   17.071954][    C0] RDX: 0000000000000000 RSI: ffffffffa4087785 RDI: ffffffffa3851260
[   17.071956][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   17.071958][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   17.071960][    C0] R13: ffffffffa421f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.071964][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.071969][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.071971][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.071973][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.071977][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.071982][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 17.071989][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.071993][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.071997][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.072000][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.072004][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 17.072009][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 17.072013][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.094081][    C0] RCU nest depth: 0, expected: 0
| [   17.094319][    C0] INFO: lockdep is turned off.
| [   17.094566][    C0] Preemption disabled at:
| [ 17.094568][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   17.095104][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.095106][    C0] Call Trace:
[   17.095108][    C0]  <IRQ>
[ 17.095110][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.095116][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 17.095122][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.095127][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.095130][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.095134][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.095140][ 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) 
[ 17.095145][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.095148][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.095152][ 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) 
[ 17.095157][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.095160][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.095165][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.095168][ 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) 
[ 17.095173][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.095177][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.095180][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.095184][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.095189][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.095193][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.095196][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.095198][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.095201][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.095206][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 17.095209][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.095212][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.095214][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.095222][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.095225][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.095229][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.095232][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.095236][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 17.095241][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.095245][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.095250][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 17.095253][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.095258][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.095262][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.095267][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.095271][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.095275][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.095281][    C0]  </IRQ>
[   17.095282][    C0]  <TASK>
[ 17.095285][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.095290][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.095295][ 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
[   17.095298][    C0] RSP: 0018:ffffffffa4207df8 EFLAGS: 00000242
[   17.095304][    C0] RAX: 000000000007c6a7 RBX: 1ffffffff4840fc3 RCX: ffffffffa355ba19
[   17.095306][    C0] RDX: 0000000000000000 RSI: ffffffffa4087785 RDI: ffffffffa3851260
[   17.095308][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   17.095310][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   17.095312][    C0] R13: ffffffffa421f240 R14: dffffc0000000000 R15: 0000000000014770
[ 17.095316][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.095321][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.095323][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.095325][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.095329][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.095334][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 17.095341][ C0] do_idle (kernel/sched/idle.c:325) 
[ 17.095345][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.095349][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 17.095352][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 17.095356][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 17.095361][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 17.095365][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   19.356447][    C3] INFO: lockdep is turned off.
| [   19.356621][    C3] Preemption disabled at:
| [ 19.356623][ C3] 0x0 
| [   19.356940][    C3] Tainted: [W]=WARN
[   19.356941][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.356943][    C3] Call Trace:
[   19.356945][    C3]  <IRQ>
[ 19.356947][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 19.356956][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 19.356962][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 19.356967][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 19.356970][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 19.356975][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.356981][ 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) 
[ 19.356986][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 19.356989][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 19.356993][ 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) 
[ 19.356998][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 19.357001][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 19.357006][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 19.357009][ 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) 
[ 19.357015][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 19.357019][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 19.357022][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 19.357026][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 19.357031][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.357035][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.357038][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.357041][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.357043][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.357048][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 19.357051][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.357054][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.357059][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 19.357064][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 19.357068][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.357073][ C3] __put_net (net/core/net_namespace.c:732) 
[ 19.357077][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 19.357081][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.357084][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 19.357089][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 19.357094][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.357099][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 19.357103][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 19.357107][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 19.357110][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 19.357113][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   19.357116][    C3]  </IRQ>
[   19.357117][    C3]  <TASK>
[ 19.357119][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.357121][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 19.357126][ 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
[   19.357128][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   19.357132][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffffa355ba19
[   19.357134][    C3] RDX: ffffed1006c3667b RSI: ffffffffa38511e0 RDI: ffffffffa0d8633f
[   19.357136][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c3667a
[   19.357138][    C3] R10: ffff8880361b33d3 R11: ffff888001bdcb58 R12: 0000000000000000
[   19.357140][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 19.357144][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 19.357147][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.357151][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 19.357154][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 19.357156][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 19.357160][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 19.357165][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 19.357170][ C3] do_idle (kernel/sched/idle.c:325) 
[ 19.357174][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 19.357178][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 19.357181][ 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