======================================
| [   14.417548][    C0] 1 lock held by swapper/0/0:
| [ 14.417752][ C0] #0: ffffffffaed74480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.418121][    C0]
| [   14.418121][    C0] stack backtrace:
[   14.418380][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.418382][    C0] Call Trace:
[   14.418384][    C0]  <IRQ>
[ 14.418385][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.418391][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.418396][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.418400][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 14.418405][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.418409][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.418413][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.418417][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.418421][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.418426][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.418430][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.418434][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.418439][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.418442][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.418447][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.418450][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.418453][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 14.418457][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.418460][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.418465][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.418468][ 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) 
[ 14.418472][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.418475][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.418478][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.418480][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.418484][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.418487][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.418490][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.418492][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.418494][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.418498][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.418501][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.418504][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.418506][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.418511][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.418514][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.418518][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.418521][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.418524][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.418528][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.418532][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.418535][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.418539][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.418543][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.418546][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.418551][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.418553][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.418555][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.418558][    C0]  </IRQ>
[   14.418559][    C0]  <TASK>
[ 14.418561][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.418564][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.418567][ 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
[   14.418570][    C0] RSP: 0018:ffffffffaea07df8 EFLAGS: 00000246
[   14.418574][    C0] RAX: 000000000006b32d RBX: 1ffffffff5d40fc3 RCX: ffffffffadd55a19
[   14.418576][    C0] RDX: 0000000000000000 RSI: ffffffffae885f31 RDI: ffffffffae050ce0
[   14.418577][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   14.418579][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.418581][    C0] R13: ffffffffaea1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.418584][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.418590][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.418592][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.418594][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.418598][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.418602][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.418608][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.418611][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.418615][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.418618][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.418621][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 14.418626][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 14.418629][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.436966][    C0] RCU nest depth: 0, expected: 0
| [   14.437169][    C0] INFO: lockdep is turned off.
| [   14.437365][    C0] Preemption disabled at:
| [ 14.437367][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   14.437931][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.437932][    C0] Call Trace:
[   14.437934][    C0]  <IRQ>
[ 14.437935][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.437940][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 14.437945][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.437948][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.437951][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 14.437955][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.437960][ 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) 
[ 14.437965][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 14.437967][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.437971][ 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) 
[ 14.437975][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.437978][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.437985][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.437988][ 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) 
[ 14.437992][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.437996][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.437999][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.438003][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.438007][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.438011][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.438014][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.438016][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.438018][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.438022][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.438025][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.438028][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.438030][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.438037][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.438040][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.438043][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.438046][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.438050][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.438054][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.438058][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.438062][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.438065][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.438070][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.438073][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.438077][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.438080][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.438082][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.438085][    C0]  </IRQ>
[   14.438086][    C0]  <TASK>
[ 14.438088][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.438090][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.438094][ 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
[   14.438096][    C0] RSP: 0018:ffffffffaea07df8 EFLAGS: 00000246
[   14.438099][    C0] RAX: 000000000006b32d RBX: 1ffffffff5d40fc3 RCX: ffffffffadd55a19
[   14.438101][    C0] RDX: 0000000000000000 RSI: ffffffffae885f31 RDI: ffffffffae050ce0
[   14.438103][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   14.438104][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.438106][    C0] R13: ffffffffaea1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.438109][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.438115][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.438117][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.438119][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.438123][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.438127][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.438133][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.438137][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.438141][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.438144][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.438147][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 14.438151][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 14.438155][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.031149][    C3] INFO: lockdep is turned off.
| [   16.031354][    C3] Preemption disabled at:
| [ 16.031356][ C3] handle_softirqs (kernel/softirq.c:553) 
| [   16.031729][    C3] Tainted: [W]=WARN
[   16.031730][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.031732][    C3] Call Trace:
[   16.031734][    C3]  <TASK>
[ 16.031736][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.031745][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 16.031752][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.031757][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.031759][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 16.031765][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.031773][ 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) 
[ 16.031778][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 16.031781][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.031787][ 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) 
[ 16.031791][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.031794][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.031800][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.031803][ 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) 
[ 16.031810][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.031814][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.031817][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.031820][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049) 
[ 16.031826][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.031830][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) 
[ 16.031836][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2392) 
[ 16.031840][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.031845][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.031850][ C3] __put_net (net/core/net_namespace.c:732) 
[ 16.031853][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 16.031857][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.031860][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.031865][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.031869][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.031873][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.031880][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.031883][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 16.031888][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.031891][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.031893][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049) 
[ 16.031896][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[   16.031899][    C3] RIP: 0033:0x7f7d6d03e535
[ 16.031903][ C3] Code: ff ff ff 49 8d 7c 24 10 48 8b 04 fa a8 0f 0f 85 91 01 00 00 48 89 c6 83 e9 01 48 c1 ee 0c 48 33 30 48 89 34 fa 66 42 89 0c 62 <48> c7 40 08 00 00 00 00 48 83 c4 10 5b 5d 41 5c c3 66 2e 0f 1f 84
All code
========
   0:	ff                   	(bad)
   1:	ff                   	(bad)
   2:	ff 49 8d             	decl   -0x73(%rcx)
   5:	7c 24                	jl     0x2b
   7:	10 48 8b             	adc    %cl,-0x75(%rax)
   a:	04 fa                	add    $0xfa,%al
   c:	a8 0f                	test   $0xf,%al
   e:	0f 85 91 01 00 00    	jne    0x1a5
  14:	48 89 c6             	mov    %rax,%rsi
  17:	83 e9 01             	sub    $0x1,%ecx
  1a:	48 c1 ee 0c          	shr    $0xc,%rsi
  1e:	48 33 30             	xor    (%rax),%rsi
  21:	48 89 34 fa          	mov    %rsi,(%rdx,%rdi,8)
  25:	66 42 89 0c 62       	mov    %cx,(%rdx,%r12,2)
  2a:*	48 c7 40 08 00 00 00 	movq   $0x0,0x8(%rax)		<-- trapping instruction
  31:	00 
  32:	48 83 c4 10          	add    $0x10,%rsp
  36:	5b                   	pop    %rbx
  37:	5d                   	pop    %rbp
  38:	41 5c                	pop    %r12
  3a:	c3                   	ret
  3b:	66                   	data16
  3c:	2e                   	cs
  3d:	0f                   	.byte 0xf
  3e:	1f                   	(bad)
  3f:	84                   	.byte 0x84

Code starting with the faulting instruction
===========================================
   0:	48 c7 40 08 00 00 00 	movq   $0x0,0x8(%rax)
   7:	00 
   8:	48 83 c4 10          	add    $0x10,%rsp
   c:	5b                   	pop    %rbx
   d:	5d                   	pop    %rbp
   e:	41 5c                	pop    %r12
  10:	c3                   	ret
  11:	66                   	data16
  12:	2e                   	cs
  13:	0f                   	.byte 0xf
  14:	1f                   	(bad)
  15:	84                   	.byte 0x84
[   16.031906][    C3] RSP: 002b:00007ffc51e47f30 EFLAGS: 00010202
[   16.031910][    C3] RAX: 000055d503fcff10 RBX: ffffffffffffffb8 RCX: 0000000000000001
[   16.031912][    C3] RDX: 000055d503fc1010 RSI: 000055d503fd6210 RDI: 0000000000000010
[   16.031914][    C3] RBP: 0000000000000002 R08: 0000000000000001 R09: 00007ffc51e48260
[   16.031915][    C3] R10: 000055d503fc7610 R11: 0000000000000000 R12: 0000000000000000


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
handle_softirqs:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal