======================================
| [   20.378349][    C0] 1 lock held by swapper/0/0:
| [ 20.378603][ C0] #0: ffffffffa31774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   20.379031][    C0]
| [   20.379031][    C0] stack backtrace:
[   20.379355][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.379357][    C0] Call Trace:
[   20.379360][    C0]  <IRQ>
[ 20.379362][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.379371][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 20.379376][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 20.379379][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 20.379386][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.379390][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 20.379397][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 20.379401][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 20.379404][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 20.379408][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.379412][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 20.379415][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 20.379421][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.379427][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 20.379429][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 20.379434][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 20.379438][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 20.379441][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 20.379446][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 20.379451][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 20.379458][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 20.379462][ 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:2376) 
[ 20.379469][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.379472][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 20.379475][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.379479][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 20.379485][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.379491][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.379494][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.379497][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.379500][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.379504][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 20.379506][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.379509][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 20.379512][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 20.379518][ C0] __put_net (net/core/net_namespace.c:732) 
[ 20.379523][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 20.379527][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.379529][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.379533][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.379537][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 20.379540][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.379544][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.379548][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.379552][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 20.379558][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 20.379563][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.379566][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.379569][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   20.379573][    C0]  </IRQ>
[   20.379574][    C0]  <TASK>
[ 20.379575][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.379578][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.379583][ C0] Code: 92 b5 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 83 37 10 00 fb f4 <e9> fc 54 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	92                   	xchg   %eax,%edx
   1:	b5 00                	mov    $0x0,%ch
   3:	c3                   	ret
   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 83 37 10 00 	verw   0x103783(%rip)        # 0x1037ab
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	e9 fc 54 02 00       	jmp    0x2552b		<-- trapping instruction
  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:	e9 fc 54 02 00       	jmp    0x25501
   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
[   20.379587][    C0] RSP: 0018:ffffffffa2e07df8 EFLAGS: 00000246
[   20.379592][    C0] RAX: 000000000006de39 RBX: 1ffffffff45c0fc3 RCX: ffffffffa21905d9
[   20.379595][    C0] RDX: 0000000000000000 RSI: ffffffffa2c8f4e4 RDI: ffffffffa2453be0
[   20.379598][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   20.379601][    C0] R10: ffff8880360337d3 R11: ffffffffa2e11288 R12: 0000000000000000
[   20.379604][    C0] R13: ffffffffa2e1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 20.379612][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 20.379617][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.379620][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.379623][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.379626][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 20.379631][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 20.379637][ C0] do_idle (kernel/sched/idle.c:325) 
[ 20.379642][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.379647][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 20.379653][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 20.379660][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 20.379667][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 20.379670][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   20.402928][    C0] RCU nest depth: 0, expected: 0
| [   20.403296][    C0] INFO: lockdep is turned off.
| [   20.403531][    C0] Preemption disabled at:
| [ 20.403533][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   20.404116][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.404119][    C0] Call Trace:
[   20.404121][    C0]  <IRQ>
[ 20.404123][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.404131][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 20.404139][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 20.404145][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 20.404148][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 20.404153][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.404159][ 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) 
[ 20.404166][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 20.404169][ 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) 
[ 20.404173][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 20.404183][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 20.404188][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 20.404197][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 20.404201][ 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:2376) 
[ 20.404208][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.404212][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 20.404215][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.404221][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 20.404226][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.404231][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.404234][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.404237][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.404239][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.404245][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 20.404249][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.404253][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 20.404258][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 20.404268][ C0] __put_net (net/core/net_namespace.c:732) 
[ 20.404272][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 20.404276][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.404279][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.404282][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.404289][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 20.404294][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.404302][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.404307][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.404315][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 20.404320][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 20.404326][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.404329][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.404332][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   20.404336][    C0]  </IRQ>
[   20.404338][    C0]  <TASK>
[ 20.404340][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.404343][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.404348][ C0] Code: 92 b5 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 83 37 10 00 fb f4 <e9> fc 54 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	92                   	xchg   %eax,%edx
   1:	b5 00                	mov    $0x0,%ch
   3:	c3                   	ret
   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 83 37 10 00 	verw   0x103783(%rip)        # 0x1037ab
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	e9 fc 54 02 00       	jmp    0x2552b		<-- trapping instruction
  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:	e9 fc 54 02 00       	jmp    0x25501
   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
[   20.404354][    C0] RSP: 0018:ffffffffa2e07df8 EFLAGS: 00000246
[   20.404360][    C0] RAX: 000000000006de39 RBX: 1ffffffff45c0fc3 RCX: ffffffffa21905d9
[   20.404364][    C0] RDX: 0000000000000000 RSI: ffffffffa2c8f4e4 RDI: ffffffffa2453be0
[   20.404367][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   20.404368][    C0] R10: ffff8880360337d3 R11: ffffffffa2e11288 R12: 0000000000000000
[   20.404370][    C0] R13: ffffffffa2e1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 20.404374][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 20.404379][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.404382][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.404385][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.404388][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 20.404392][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 20.404399][ C0] do_idle (kernel/sched/idle.c:325) 
[ 20.404402][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.404405][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 20.404409][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 20.404413][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 20.404421][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 20.404427][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   24.483314][    C0] INFO: lockdep is turned off.
| [   24.483560][    C0] Preemption disabled at:
| [ 24.483562][ C0] handle_softirqs (kernel/softirq.c:553) 
| [   24.484060][    C0] Tainted: [W]=WARN
[   24.484062][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.484065][    C0] Call Trace:
[   24.484067][    C0]  <IRQ>
[ 24.484069][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 24.484079][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 24.484087][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 24.484092][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 24.484095][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 24.484101][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.484108][ 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) 
[ 24.484115][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 24.484118][ 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) 
[ 24.484121][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 24.484128][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 24.484131][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 24.484139][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 24.484143][ 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:2376) 
[ 24.484150][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 24.484154][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 24.484157][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 24.484160][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 24.484166][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 24.484171][ C0] ? stack_depot_save_flags (lib/stackdepot.c:610) 
[ 24.484175][ C0] ? set_track_prepare (mm/slub.c:939) 
[ 24.484181][ C0] ? __alloc_object (mm/kmemleak.c:697) 
[ 24.484184][ C0] ? __create_object (mm/kmemleak.c:770) 
[ 24.484188][ C0] ? __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4353) 
[ 24.484194][ C0] ? kmem_cache_free (mm/slub.c:2333 mm/slub.c:4642 mm/slub.c:4744) 
[ 24.484198][ C0] ? exit_mmap (mm/mmap.c:1311) 
[ 24.484204][ C0] ? mmput (kernel/fork.c:1449 kernel/fork.c:1383 kernel/fork.c:1404) 
[ 24.484209][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 24.484214][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.484219][ C0] __put_net (net/core/net_namespace.c:732) 
[ 24.484224][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 24.484228][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 24.484230][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 24.484235][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 24.484239][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.484242][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 24.484251][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 24.484256][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 24.484261][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 24.484264][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 24.484267][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   24.484271][    C0]  </IRQ>
[   24.484272][    C0]  <TASK>
[ 24.484274][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 24.484277][ C0] RIP: 0010:stack_depot_save_flags (lib/stackdepot.c:610) 
[ 24.484281][ C0] Code: 65 48 8b 05 3b 96 2f 04 48 89 44 24 30 31 c0 48 c7 44 24 28 00 00 00 00 41 83 e6 fc 0f 85 6b 04 00 00 48 89 fd 89 d3 41 89 cd <e8> 0c 8b 29 ff 41 89 c7 85 c0 74 18 44 0f b6 25 6d 11 34 05 41 80
All code
========
   0:	65 48 8b 05 3b 96 2f 	mov    %gs:0x42f963b(%rip),%rax        # 0x42f9643
   7:	04 
   8:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
   d:	31 c0                	xor    %eax,%eax
   f:	48 c7 44 24 28 00 00 	movq   $0x0,0x28(%rsp)
  16:	00 00 
  18:	41 83 e6 fc          	and    $0xfffffffc,%r14d
  1c:	0f 85 6b 04 00 00    	jne    0x48d
  22:	48 89 fd             	mov    %rdi,%rbp
  25:	89 d3                	mov    %edx,%ebx
  27:	41 89 cd             	mov    %ecx,%r13d
  2a:*	e8 0c 8b 29 ff       	call   0xffffffffff298b3b		<-- trapping instruction
  2f:	41 89 c7             	mov    %eax,%r15d
  32:	85 c0                	test   %eax,%eax
  34:	74 18                	je     0x4e
  36:	44 0f b6 25 6d 11 34 	movzbl 0x534116d(%rip),%r12d        # 0x53411ab
  3d:	05 
  3e:	41                   	rex.B
  3f:	80                   	.byte 0x80

Code starting with the faulting instruction
===========================================
   0:	e8 0c 8b 29 ff       	call   0xffffffffff298b11
   5:	41 89 c7             	mov    %eax,%r15d
   8:	85 c0                	test   %eax,%eax
   a:	74 18                	je     0x24
   c:	44 0f b6 25 6d 11 34 	movzbl 0x534116d(%rip),%r12d        # 0x5341181
  13:	05 
  14:	41                   	rex.B
  15:	80                   	.byte 0x80
[   24.484285][    C0] RSP: 0018:ffffc90000a37a88 EFLAGS: 00000246
[   24.484289][    C0] RAX: 0000000000000000 RBX: 0000000000002800 RCX: 0000000000000001
[   24.484291][    C0] RDX: 0000000000002800 RSI: 000000000000000b RDI: ffffc90000a37af8
[   24.484293][    C0] RBP: ffffc90000a37af8 R08: 0000000000000000 R09: 0000000000000000
[   24.484294][    C0] R10: ffffffff9fce29b3 R11: ffffc90000a37a00 R12: ffff888002a639a0
[   24.484296][    C0] R13: 0000000000000001 R14: 0000000000000000 R15: ffff88800a2521a0
[ 24.484300][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 kernel/bpf/core.c:772) 
[ 24.484311][ C0] set_track_prepare (mm/slub.c:939) 
[ 24.484315][ C0] ? __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4353) 
[ 24.484318][ C0] ? kmem_cache_free (mm/slub.c:2333 mm/slub.c:4642 mm/slub.c:4744) 
[ 24.484321][ C0] ? exit_mmap (mm/mmap.c:1311) 
[ 24.484324][ C0] ? mmput (kernel/fork.c:1449 kernel/fork.c:1383 kernel/fork.c:1404) 
[ 24.484327][ C0] ? exit_mm (kernel/exit.c:596) 
[ 24.484333][ C0] ? do_exit (kernel/exit.c:950) 
[ 24.484336][ C0] ? do_group_exit (kernel/exit.c:1089) 
[ 24.484339][ C0] ? __x64_sys_exit_group (kernel/exit.c:1117) 
[ 24.484342][ C0] ? x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 24.484349][ C0] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.484352][ C0] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 24.484356][ C0] __alloc_object (mm/kmemleak.c:697) 
[ 24.484359][ C0] __create_object (mm/kmemleak.c:770) 
[ 24.484364][ C0] __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4353) 
[ 24.484369][ C0] kmem_cache_free (mm/slub.c:2333 mm/slub.c:4642 mm/slub.c:4744) 
[ 24.484372][ C0] ? exit_mmap (mm/mmap.c:1311) 
[ 24.484376][ C0] exit_mmap (mm/mmap.c:1311) 
[ 24.484381][ C0] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 24.484385][ C0] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:727 kernel/locking/mutex.c:746) 
[ 24.484389][ C0] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 24.484393][ C0] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:924) 
[ 24.484401][ C0] mmput (kernel/fork.c:1449 kernel/fork.c:1383 kernel/fork.c:1404) 
[ 24.484405][ C0] exit_mm (kernel/exit.c:596) 
[ 24.484408][ C0] do_exit (kernel/exit.c:950) 
[ 24.484413][ C0] do_group_exit (kernel/exit.c:1089) 
[ 24.484417][ C0] __x64_sys_exit_group (kernel/exit.c:1117) 
[ 24.484421][ C0] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 24.484424][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.484427][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.484430][    C0] RIP: 0033:0x7f17e4b8aabd
[ 24.484433][ C0] Code: Unable to access opcode bytes at 0x7f17e4b8aa93.

Code starting with the faulting instruction
===========================================
[   24.484435][    C0] RSP: 002b:00007ffeb8d0c7e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   24.484438][    C0] RAX: ffffffffffffffda RBX: 00007f17e4c679c0 RCX: 00007f17e4b8aabd
[   24.484439][    C0] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   24.484441][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000030
[   24.484443][    C0] R10: 00007ffeb8d0c670 R11: 0000000000000246 R12: 00007f17e4c679c0


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