======================================
| [   17.796594][    C2] 1 lock held by swapper/2/0:
| [ 17.796785][ C2] #0: ffffffffa73774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   17.797126][    C2]
| [   17.797126][    C2] stack backtrace:
[   17.797365][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.797366][    C2] Call Trace:
[   17.797368][    C2]  <IRQ>
[ 17.797371][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.797379][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 17.797383][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 17.797388][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 17.797394][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 17.797400][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 17.797404][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 17.797407][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 17.797410][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.797414][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 17.797417][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.797421][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.797427][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 17.797429][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.797434][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.797437][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.797440][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 17.797444][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.797447][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.797456][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.797459][ 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) 
[ 17.797466][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.797468][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.797471][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.797474][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.797479][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.797482][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.797486][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.797488][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.797490][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.797494][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 17.797496][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.797499][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.797502][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.797510][ C2] __put_net (net/core/net_namespace.c:732) 
[ 17.797515][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.797519][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.797521][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.797524][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.797529][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.797532][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.797536][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.797538][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.797543][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.797549][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 17.797554][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.797557][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.797560][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.797563][    C2]  </IRQ>
[   17.797565][    C2]  <TASK>
[ 17.797566][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.797569][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.797573][ 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
[   17.797576][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   17.797579][    C2] RAX: 0000000000043d17 RBX: 1ffff92000028fc1 RCX: ffffffffa63905d9
[   17.797581][    C2] RDX: 0000000000000000 RSI: ffffffffa6e8f4e4 RDI: ffffffffa6653be0
[   17.797583][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ee66fa
[   17.797584][    C2] R10: ffff88802f7337d3 R11: ffffffffa7011288 R12: 0000000000000000
[   17.797586][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 17.797590][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.797595][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.797597][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.797600][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.797603][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.797607][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.797611][ C2] do_idle (kernel/sched/idle.c:325) 
[ 17.797614][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.797617][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.797620][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 17.797625][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.813389][    C2] RCU nest depth: 0, expected: 0
| [   17.813580][    C2] INFO: lockdep is turned off.
| [   17.813763][    C2] Preemption disabled at:
| [ 17.813765][ C2] 0x0 
[   17.814109][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.814111][    C2] Call Trace:
[   17.814113][    C2]  <IRQ>
[ 17.814116][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.814123][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 17.814132][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.814137][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.814140][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.814144][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.814149][ 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) 
[ 17.814155][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.814158][ 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) 
[ 17.814161][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.814166][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.814169][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.814175][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.814178][ 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) 
[ 17.814184][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.814187][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.814190][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.814194][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.814199][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.814203][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.814206][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.814209][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.814211][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.814215][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 17.814217][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.814220][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.814223][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.814231][ C2] __put_net (net/core/net_namespace.c:732) 
[ 17.814234][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.814239][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.814241][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.814244][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.814250][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.814253][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.814257][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.814260][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.814265][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.814269][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 17.814275][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.814280][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.814283][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.814287][    C2]  </IRQ>
[   17.814288][    C2]  <TASK>
[ 17.814289][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.814292][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.814296][ 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
[   17.814299][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   17.814302][    C2] RAX: 0000000000043d17 RBX: 1ffff92000028fc1 RCX: ffffffffa63905d9
[   17.814304][    C2] RDX: 0000000000000000 RSI: ffffffffa6e8f4e4 RDI: ffffffffa6653be0
[   17.814306][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ee66fa
[   17.814307][    C2] R10: ffff88802f7337d3 R11: ffffffffa7011288 R12: 0000000000000000
[   17.814309][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 17.814313][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.814317][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.814320][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.814322][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.814325][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.814329][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.814333][ C2] do_idle (kernel/sched/idle.c:325) 
[ 17.814337][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.814340][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.814343][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 17.814347][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   20.302148][    C2] INFO: lockdep is turned off.
| [   20.302355][    C2] Preemption disabled at:
| [ 20.302357][ C2] 0x0 
| [   20.302731][    C2] Tainted: [W]=WARN
[   20.302733][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.302735][    C2] Call Trace:
[   20.302737][    C2]  <IRQ>
[ 20.302739][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.302748][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 20.302756][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 20.302760][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 20.302763][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 20.302768][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.302773][ 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) 
[ 20.302779][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 20.302781][ 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) 
[ 20.302785][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 20.302790][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 20.302793][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 20.302799][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 20.302803][ 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) 
[ 20.302808][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.302812][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 20.302815][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.302820][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 20.302824][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.302828][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.302832][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.302834][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.302837][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.302840][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 20.302843][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.302845][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 20.302849][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 20.302854][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 20.302860][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.302864][ C2] __put_net (net/core/net_namespace.c:732) 
[ 20.302868][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 20.302872][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.302874][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.302879][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 20.302882][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 20.302888][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.302894][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 20.302899][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 20.302904][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.302908][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.302910][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   20.302914][    C2]  </IRQ>
[   20.302915][    C2]  <TASK>
[ 20.302917][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.302920][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.302924][ 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
[   20.302926][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   20.302930][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffffa63905d9
[   20.302932][    C2] RDX: ffffed1005ee66fb RSI: ffffffffa6653b60 RDI: ffffffffa3b8d18f
[   20.302934][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1005ee66fa
[   20.302936][    C2] R10: ffff88802f7337d3 R11: ffff8880092b2818 R12: 0000000000000000
[   20.302938][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 20.302941][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 20.302944][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.302948][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.302951][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.302953][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.302956][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 20.302960][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 20.302964][ C2] do_idle (kernel/sched/idle.c:325) 
[ 20.302968][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.302971][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 20.302973][ 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