======================================
| [   15.872642][    C0] 1 lock held by swapper/0/0:
| [ 15.872866][ C0] #0: ffffffff853749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   15.873261][    C0]
| [   15.873261][    C0] stack backtrace:
[   15.873538][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.873540][    C0] Call Trace:
[   15.873543][    C0]  <IRQ>
[ 15.873544][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.873551][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 15.873556][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 15.873560][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.873567][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 15.873571][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 15.873575][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 15.873580][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 15.873583][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 15.873589][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 15.873591][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.873595][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.873601][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.873603][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.873606][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.873610][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.873612][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 15.873615][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.873618][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.873624][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.873627][ 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) 
[ 15.873635][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.873638][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.873641][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.873643][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.873649][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.873653][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.873656][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.873659][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.873661][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.873666][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.873669][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.873672][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.873675][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.873681][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.873685][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.873689][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.873692][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.873695][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.873700][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.873703][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.873707][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.873711][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.873715][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.873720][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.873725][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.873727][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.873730][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.873733][    C0]  </IRQ>
[   15.873734][    C0]  <TASK>
[ 15.873736][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.873739][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.873743][ 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
[   15.873746][    C0] RSP: 0018:ffffffff85007df8 EFLAGS: 00000246
[   15.873749][    C0] RAX: 000000000006f3b7 RBX: 1ffffffff0a00fc3 RCX: ffffffff8435ba19
[   15.873752][    C0] RDX: 0000000000000000 RSI: ffffffff84e87785 RDI: ffffffff84651260
[   15.873753][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   15.873755][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   15.873757][    C0] R13: ffffffff8501f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.873761][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.873766][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.873768][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.873770][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.873774][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.873779][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.873786][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.873790][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.873793][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.873797][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.873801][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 15.873806][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 15.873810][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.893162][    C0] RCU nest depth: 0, expected: 0
| [   15.893370][    C0] INFO: lockdep is turned off.
| [   15.893701][    C0] Preemption disabled at:
| [ 15.893703][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   15.894186][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.894188][    C0] Call Trace:
[   15.894190][    C0]  <IRQ>
[ 15.894192][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.894198][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 15.894205][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.894210][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.894213][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.894217][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.894224][ 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) 
[ 15.894230][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.894233][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.894238][ 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) 
[ 15.894243][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.894245][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.894251][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.894254][ 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) 
[ 15.894260][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.894264][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.894267][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.894270][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.894275][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.894279][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.894282][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.894285][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.894287][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.894292][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.894295][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.894298][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.894302][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.894309][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.894313][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.894317][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.894320][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.894324][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.894330][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.894334][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.894338][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.894342][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.894347][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.894350][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.894355][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.894358][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.894360][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.894364][    C0]  </IRQ>
[   15.894365][    C0]  <TASK>
[ 15.894367][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.894370][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.894374][ 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
[   15.894377][    C0] RSP: 0018:ffffffff85007df8 EFLAGS: 00000246
[   15.894381][    C0] RAX: 000000000006f3b7 RBX: 1ffffffff0a00fc3 RCX: ffffffff8435ba19
[   15.894383][    C0] RDX: 0000000000000000 RSI: ffffffff84e87785 RDI: ffffffff84651260
[   15.894385][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   15.894386][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   15.894388][    C0] R13: ffffffff8501f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.894392][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.894397][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.894399][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.894402][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.894405][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.894410][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.894417][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.894421][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.894424][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.894428][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.894432][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 15.894436][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 15.894440][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.820519][    C1] INFO: lockdep is turned off.
| [   17.820698][    C1] Preemption disabled at:
| [ 17.820699][ C1] 0x0 
| [   17.821053][    C1] Tainted: [W]=WARN
[   17.821054][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.821056][    C1] Call Trace:
[   17.821058][    C1]  <IRQ>
[ 17.821061][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.821073][ C1] __might_resched (kernel/sched/core.c:8819) 
[ 17.821082][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.821088][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.821091][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.821098][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.821106][ C1] ? 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) 
[ 17.821113][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.821115][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.821122][ C1] ? 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) 
[ 17.821126][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.821129][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.821136][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.821139][ C1] ? __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) 
[ 17.821147][ C1] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.821152][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.821155][ C1] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.821161][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.821167][ C1] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.821173][ C1] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.821176][ C1] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.821178][ C1] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.821180][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.821187][ C1] ? do_idle (kernel/sched/idle.c:325) 
[ 17.821190][ C1] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.821194][ C1] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.821200][ C1] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.821206][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.821210][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.821215][ C1] __put_net (net/core/net_namespace.c:732) 
[ 17.821220][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.821224][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.821227][ C1] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.821232][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.821236][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.821241][ C1] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.821248][ C1] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.821253][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 17.821257][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.821260][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.821262][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.821266][    C1]  </IRQ>
[   17.821267][    C1]  <TASK>
[ 17.821268][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.821271][ C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 17.821275][ C1] 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
[   17.821278][    C1] RSP: 0018:ffffc90000137de8 EFLAGS: 00000246
[   17.821282][    C1] RAX: 0000000000000001 RBX: 1ffff92000026fc1 RCX: ffffffff8435ba19
[   17.821284][    C1] RDX: ffffed1006c1667b RSI: ffffffff846511e0 RDI: ffffffff81b8633f
[   17.821286][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c1667a
[   17.821288][    C1] R10: ffff8880360b33d3 R11: ffff88800acd0558 R12: 0000000000000000
[   17.821290][    C1] R13: ffff888001bf0040 R14: dffffc0000000000 R15: 0000000000000000
[ 17.821293][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.821297][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.821301][ C1] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 17.821304][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.821306][ C1] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.821310][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.821314][ C1] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 17.821320][ C1] do_idle (kernel/sched/idle.c:325) 
[ 17.821324][ C1] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.821327][ C1] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.821331][ C1] ? __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