======================================
| [   15.017006][    C0] 1 lock held by swapper/0/0:
| [ 15.017213][ C0] #0: ffffffff857774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.017578][    C0]
| [   15.017578][    C0] stack backtrace:
[   15.017840][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.017845][    C0] Call Trace:
[   15.017850][    C0]  <IRQ>
[ 15.017851][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.017862][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.017867][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.017870][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.017882][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.017887][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.017894][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.017899][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.017902][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.017905][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.017909][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.017912][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.017917][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.017922][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.017924][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.017929][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.017932][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.017937][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 15.017941][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.017945][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.017960][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.017963][ 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) 
[ 15.017979][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.017982][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.017985][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.017988][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.017995][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.018002][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.018006][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.018009][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.018011][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.018016][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.018018][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.018020][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.018023][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.018029][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.018034][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.018038][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.018041][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.018044][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.018048][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.018051][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.018055][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.018058][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.018063][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.018067][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.018072][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.018075][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.018078][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.018082][    C0]  </IRQ>
[   15.018083][    C0]  <TASK>
[ 15.018084][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.018087][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.018091][ 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
[   15.018094][    C0] RSP: 0000:ffffffff85407df8 EFLAGS: 00000242
[   15.018102][    C0] RAX: 0000000000076a23 RBX: 1ffffffff0a80fc3 RCX: ffffffff847905d9
[   15.018104][    C0] RDX: 0000000000000000 RSI: ffffffff8528f4e4 RDI: ffffffff84a53be0
[   15.018106][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   15.018108][    C0] R10: ffff8880360337d3 R11: ffffffff85411288 R12: 0000000000000000
[   15.018109][    C0] R13: ffffffff8541f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.018113][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.018118][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.018121][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.018124][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.018128][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.018131][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.018139][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.018143][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.018146][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.018149][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.018153][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.018159][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.018163][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.035988][    C0] RCU nest depth: 0, expected: 0
| [   15.036192][    C0] INFO: lockdep is turned off.
| [   15.036391][    C0] Preemption disabled at:
| [ 15.036392][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   15.036830][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.036831][    C0] Call Trace:
[   15.036833][    C0]  <IRQ>
[ 15.036834][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.036840][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 15.036850][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.036854][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.036857][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.036861][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.036866][ 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) 
[ 15.036875][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.036878][ 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) 
[ 15.036881][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.036886][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.036889][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.036895][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.036898][ 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) 
[ 15.036903][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.036906][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.036909][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.036914][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.036918][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.036921][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.036925][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.036928][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.036930][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.036933][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.036935][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.036940][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.036943][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.036950][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.036953][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.036958][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.036960][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.036964][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.036969][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.036972][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.036976][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.036979][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.036984][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.036988][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.036994][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.036997][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.036999][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.037003][    C0]  </IRQ>
[   15.037004][    C0]  <TASK>
[ 15.037006][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.037009][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.037013][ 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
[   15.037015][    C0] RSP: 0000:ffffffff85407df8 EFLAGS: 00000242
[   15.037018][    C0] RAX: 0000000000076a23 RBX: 1ffffffff0a80fc3 RCX: ffffffff847905d9
[   15.037020][    C0] RDX: 0000000000000000 RSI: ffffffff8528f4e4 RDI: ffffffff84a53be0
[   15.037022][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   15.037023][    C0] R10: ffff8880360337d3 R11: ffffffff85411288 R12: 0000000000000000
[   15.037025][    C0] R13: ffffffff8541f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.037029][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.037036][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.037038][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.037041][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.037045][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.037048][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.037056][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.037059][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.037062][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.037065][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.037069][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.037073][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.037077][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.766894][    C2] INFO: lockdep is turned off.
| [   16.767078][    C2] Preemption disabled at:
| [ 16.767080][ C2] handle_softirqs (kernel/softirq.c:553) 
| [   16.767440][    C2] Tainted: [W]=WARN
[   16.767441][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.767443][    C2] Call Trace:
[   16.767445][    C2]  <TASK>
[ 16.767447][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.767454][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 16.767461][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.767466][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.767469][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.767473][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.767478][ C2] ? 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) 
[ 16.767484][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.767487][ C2] ? 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) 
[ 16.767490][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.767496][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.767499][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.767505][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.767510][ C2] ? __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) 
[ 16.767515][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.767518][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.767522][ C2] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.767528][ C2] ? kthread (kernel/kthread.c:464) 
[ 16.767534][ C2] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 16.767538][ C2] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 16.767543][ C2] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 16.767550][ C2] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 16.767553][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.767561][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.767566][ C2] __put_net (net/core/net_namespace.c:732) 
[ 16.767569][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.767573][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.767576][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.767580][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.767584][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.767587][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.767598][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.767602][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 16.767606][ C2] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 16.767610][ C2] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 16.767613][ C2] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 16.767616][ C2] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 16.767621][ C2] kthread (kernel/kthread.c:464) 
[ 16.767623][ C2] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.767625][ C2] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 16.767629][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.767633][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.767636][ C2] ? __pfx_kthread (kernel/kthread.c:413) 
[ 16.767639][ C2] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 16.767642][ C2] ? __pfx_kthread (kernel/kthread.c:413) 


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