======================================
| [   15.966448][    C3] 1 lock held by swapper/3/0:
| [ 15.966661][ C3] #0: ffffffff8bf774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.967030][    C3]
| [   15.967030][    C3] stack backtrace:
[   15.967299][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.967301][    C3] Call Trace:
[   15.967303][    C3]  <IRQ>
[ 15.967305][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.967311][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.967315][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.967320][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.967324][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.967330][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.967334][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.967337][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.967340][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.967344][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.967347][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.967351][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.967355][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.967358][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.967362][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.967366][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.967369][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 15.967373][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.967376][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.967382][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.967386][ 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:2376) 
[ 15.967391][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.967394][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.967397][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.967400][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.967404][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.967408][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.967411][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.967414][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.967416][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.967420][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.967422][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.967425][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.967428][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.967436][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.967439][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.967443][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.967446][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.967449][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.967453][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.967456][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.967460][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.967463][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.967468][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.967472][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.967478][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.967481][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.967484][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.967487][    C3]  </IRQ>
[   15.967488][    C3]  <TASK>
[ 15.967490][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.967493][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.967497][ C3] 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
[   15.967500][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   15.967503][    C3] RAX: 000000000004910d RBX: 1ffff9200002afc1 RCX: ffffffff8af905d9
[   15.967505][    C3] RDX: 0000000000000000 RSI: ffffffff8ba8f4e4 RDI: ffffffff8b253be0
[   15.967506][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c366fa
[   15.967508][    C3] R10: ffff8880361b37d3 R11: ffffffff8bc11288 R12: 0000000000000000
[   15.967510][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 15.967514][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.967518][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.967521][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.967523][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.967526][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.967530][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.967535][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.967538][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.967541][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.967544][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.967548][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.985389][    C3] RCU nest depth: 0, expected: 0
| [   15.985585][    C3] INFO: lockdep is turned off.
| [   15.985770][    C3] Preemption disabled at:
| [ 15.985772][ C3] 0x0 
[   15.986211][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.986212][    C3] Call Trace:
[   15.986214][    C3]  <IRQ>
[ 15.986216][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.986222][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 15.986228][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.986232][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.986235][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.986240][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.986244][ 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) 
[ 15.986249][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.986252][ 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) 
[ 15.986255][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.986260][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.986263][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.986269][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.986272][ 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:2376) 
[ 15.986276][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.986279][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.986283][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.986286][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.986291][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.986294][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.986297][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.986300][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.986302][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.986306][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.986308][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.986310][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.986313][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.986319][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.986323][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.986327][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.986329][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.986333][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.986338][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.986341][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.986345][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.986348][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.986353][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.986357][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.986362][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.986365][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.986368][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.986371][    C3]  </IRQ>
[   15.986372][    C3]  <TASK>
[ 15.986374][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.986377][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.986380][ C3] 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
[   15.986383][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   15.986386][    C3] RAX: 000000000004910d RBX: 1ffff9200002afc1 RCX: ffffffff8af905d9
[   15.986388][    C3] RDX: 0000000000000000 RSI: ffffffff8ba8f4e4 RDI: ffffffff8b253be0
[   15.986389][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c366fa
[   15.986391][    C3] R10: ffff8880361b37d3 R11: ffffffff8bc11288 R12: 0000000000000000
[   15.986392][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 15.986396][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.986401][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.986404][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.986406][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.986409][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.986413][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.986417][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.986421][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.986424][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.986426][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.986431][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   18.080884][    C2] INFO: lockdep is turned off.
| [   18.081069][    C2] Preemption disabled at:
| [ 18.081071][ C2] 0x0 
| [   18.081417][    C2] Tainted: [W]=WARN
[   18.081418][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.081421][    C2] Call Trace:
[   18.081423][    C2]  <IRQ>
[ 18.081425][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.081437][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 18.081446][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.081451][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.081454][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 18.081460][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.081466][ 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) 
[ 18.081473][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 18.081476][ 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) 
[ 18.081479][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.081486][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.081489][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 18.081497][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 18.081501][ 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) 
[ 18.081508][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.081512][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 18.081515][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.081522][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 18.081528][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.081533][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 18.081537][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 18.081540][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 18.081542][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 18.081547][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 18.081549][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 18.081551][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 18.081556][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 18.081563][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 18.081568][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.081576][ C2] __put_net (net/core/net_namespace.c:732) 
[ 18.081581][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.081585][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.081588][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.081593][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.081597][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.081601][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.081606][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 18.081612][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.081615][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.081618][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   18.081622][    C2]  </IRQ>
[   18.081623][    C2]  <TASK>
[ 18.081625][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.081628][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 18.081633][ 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
[   18.081636][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   18.081640][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffff8af905d9
[   18.081643][    C2] RDX: ffffed1006c266fb RSI: ffffffff8b253b60 RDI: ffffffff8878d18f
[   18.081644][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c266fa
[   18.081646][    C2] R10: ffff8880361337d3 R11: ffff888001bdcad8 R12: 0000000000000000
[   18.081648][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 18.081652][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 18.081656][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 18.081659][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 18.081662][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 18.081664][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 18.081668][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 18.081671][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 18.081676][ C2] do_idle (kernel/sched/idle.c:325) 
[ 18.081679][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 18.081682][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 18.081685][ 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