======================================
| [   14.900014][    C0] 1 lock held by swapper/0/0:
| [ 14.900219][ C0] #0: ffffffffa0b774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   14.900586][    C0]
| [   14.900586][    C0] stack backtrace:
[   14.900846][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.900848][    C0] Call Trace:
[   14.900850][    C0]  <IRQ>
[ 14.900851][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.900859][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 14.900863][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 14.900867][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 14.900874][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.900878][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 14.900884][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 14.900887][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 14.900890][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 14.900893][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 14.900897][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 14.900901][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.900905][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.900909][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 14.900911][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.900916][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.900919][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.900923][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 14.900927][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.900930][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.900938][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.900941][ 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) 
[ 14.900951][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.900954][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.900957][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.900960][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 14.900966][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.900969][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.900972][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.900975][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.900978][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.900981][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.900983][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.900986][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.900988][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.900994][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.900997][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.901001][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.901004][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.901007][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.901011][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.901015][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.901018][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.901021][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.901026][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.901030][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.901036][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.901039][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.901042][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   14.901045][    C0]  </IRQ>
[   14.901047][    C0]  <TASK>
[ 14.901048][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.901051][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.901056][ 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
[   14.901058][    C0] RSP: 0018:ffffffffa0807df8 EFLAGS: 00000242
[   14.901063][    C0] RAX: 000000000006fca1 RBX: 1ffffffff4100fc3 RCX: ffffffff9fb905d9
[   14.901065][    C0] RDX: 0000000000000000 RSI: ffffffffa068f4e4 RDI: ffffffff9fe53be0
[   14.901067][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   14.901068][    C0] R10: ffff8880360337d3 R11: ffffffffa0811288 R12: 0000000000000000
[   14.901070][    C0] R13: ffffffffa081f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.901074][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.901079][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.901081][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.901084][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.901087][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.901091][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 14.901096][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.901100][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.901103][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.901107][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.901111][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 14.901115][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 14.901119][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.919092][    C0] RCU nest depth: 0, expected: 0
| [   14.919286][    C0] INFO: lockdep is turned off.
| [   14.919483][    C0] Preemption disabled at:
| [ 14.919485][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   14.920054][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.920056][    C0] Call Trace:
[   14.920057][    C0]  <IRQ>
[ 14.920059][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.920064][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 14.920072][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.920075][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.920078][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 14.920082][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.920086][ 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) 
[ 14.920092][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 14.920095][ 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) 
[ 14.920098][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.920104][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.920106][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.920111][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.920114][ 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) 
[ 14.920119][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.920122][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.920126][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.920130][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 14.920134][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.920137][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.920141][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.920143][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.920146][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.920149][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 14.920151][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.920153][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.920156][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.920163][ C0] __put_net (net/core/net_namespace.c:732) 
[ 14.920166][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.920170][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.920172][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.920176][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.920181][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.920184][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.920189][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.920191][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.920196][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.920200][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 14.920205][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.920208][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.920211][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   14.920215][    C0]  </IRQ>
[   14.920216][    C0]  <TASK>
[ 14.920217][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.920220][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.920223][ 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
[   14.920226][    C0] RSP: 0018:ffffffffa0807df8 EFLAGS: 00000242
[   14.920229][    C0] RAX: 000000000006fca1 RBX: 1ffffffff4100fc3 RCX: ffffffff9fb905d9
[   14.920231][    C0] RDX: 0000000000000000 RSI: ffffffffa068f4e4 RDI: ffffffff9fe53be0
[   14.920232][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   14.920234][    C0] R10: ffff8880360337d3 R11: ffffffffa0811288 R12: 0000000000000000
[   14.920236][    C0] R13: ffffffffa081f240 R14: dffffc0000000000 R15: 0000000000014770
[ 14.920240][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.920245][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.920247][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.920250][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.920253][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.920257][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 14.920261][ C0] do_idle (kernel/sched/idle.c:325) 
[ 14.920265][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.920268][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 14.920271][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 14.920275][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 14.920279][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 14.920282][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.545851][    C2] INFO: lockdep is turned off.
| [   16.546036][    C2] Preemption disabled at:
| [ 16.546038][ C2] 0x0 
| [   16.546388][    C2] Tainted: [W]=WARN
[   16.546389][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.546391][    C2] Call Trace:
[   16.546393][    C2]  <IRQ>
[ 16.546395][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.546403][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 16.546410][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.546415][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.546418][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.546422][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.546428][ 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) 
[ 16.546433][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.546436][ 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) 
[ 16.546439][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.546446][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.546449][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.546455][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.546458][ 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) 
[ 16.546464][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.546467][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.546471][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.546476][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.546481][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.546485][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.546488][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.546491][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.546494][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.546497][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 16.546499][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.546502][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.546505][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 16.546510][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.546517][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.546521][ C2] __put_net (net/core/net_namespace.c:732) 
[ 16.546525][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.546529][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.546531][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.546536][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.546540][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.546546][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.546551][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.546556][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 16.546561][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.546564][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.546567][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.546571][    C2]  </IRQ>
[   16.546572][    C2]  <TASK>
[ 16.546574][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.546577][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.546581][ C2] 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
[   16.546584][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   16.546587][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffff9fb905d9
[   16.546589][    C2] RDX: ffffed1006c266fb RSI: ffffffff9fe53b60 RDI: ffffffff9d38d18f
[   16.546591][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c266fa
[   16.546593][    C2] R10: ffff8880361337d3 R11: ffff888001ee2818 R12: 0000000000000000
[   16.546594][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 16.546598][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.546601][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.546605][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.546608][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.546611][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.546614][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.546618][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.546622][ C2] do_idle (kernel/sched/idle.c:325) 
[ 16.546626][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.546628][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.546631][ C2] ? __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