======================================
| [   15.160630][    C2] 1 lock held by swapper/2/0:
| [ 15.160816][ C2] #0: ffffffffb31774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.161155][    C2]
| [   15.161155][    C2] stack backtrace:
[   15.161389][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.161391][    C2] Call Trace:
[   15.161395][    C2]  <IRQ>
[ 15.161398][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.161404][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.161409][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.161414][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.161422][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.161429][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.161432][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.161437][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.161441][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.161445][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.161448][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.161452][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.161459][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.161461][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.161466][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.161469][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.161472][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 15.161476][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.161480][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.161488][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.161491][ 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) 
[ 15.161500][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.161502][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.161506][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.161509][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.161513][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.161517][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.161520][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.161523][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.161526][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.161530][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 15.161533][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.161535][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.161540][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.161549][ C2] __put_net (net/core/net_namespace.c:732) 
[ 15.161553][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.161557][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.161559][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.161562][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.161567][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.161570][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.161574][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.161577][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.161582][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.161586][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 15.161591][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.161594][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.161598][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.161601][    C2]  </IRQ>
[   15.161602][    C2]  <TASK>
[ 15.161604][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.161607][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.161611][ 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
[   15.161614][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000242
[   15.161619][    C2] RAX: 000000000003e713 RBX: 1ffff92000028fc1 RCX: ffffffffb21905d9
[   15.161621][    C2] RDX: 0000000000000000 RSI: ffffffffb2c8f4e4 RDI: ffffffffb2453be0
[   15.161623][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c266fa
[   15.161625][    C2] R10: ffff8880361337d3 R11: ffffffffb2e11288 R12: 0000000000000000
[   15.161626][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 15.161630][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.161635][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.161638][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.161640][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.161643][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.161647][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.161651][ C2] do_idle (kernel/sched/idle.c:325) 
[ 15.161655][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.161658][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.161661][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.161665][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.177373][    C2] RCU nest depth: 0, expected: 0
| [   15.177578][    C2] INFO: lockdep is turned off.
| [   15.177771][    C2] Preemption disabled at:
| [ 15.177773][ C2] 0x0 
[   15.178112][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.178113][    C2] Call Trace:
[   15.178115][    C2]  <IRQ>
[ 15.178117][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.178124][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 15.178134][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.178138][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.178141][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.178145][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.178149][ 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) 
[ 15.178156][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.178159][ 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) 
[ 15.178162][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.178169][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.178172][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.178177][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.178181][ 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) 
[ 15.178185][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.178188][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.178192][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.178196][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.178200][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.178204][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.178208][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.178210][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.178213][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.178216][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 15.178218][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.178221][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.178224][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.178231][ C2] __put_net (net/core/net_namespace.c:732) 
[ 15.178234][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.178238][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.178241][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.178244][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.178249][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.178253][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.178257][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.178260][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.178265][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.178269][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 15.178274][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.178277][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.178280][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.178284][    C2]  </IRQ>
[   15.178285][    C2]  <TASK>
[ 15.178286][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.178289][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.178292][ 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
[   15.178295][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000242
[   15.178298][    C2] RAX: 000000000003e713 RBX: 1ffff92000028fc1 RCX: ffffffffb21905d9
[   15.178300][    C2] RDX: 0000000000000000 RSI: ffffffffb2c8f4e4 RDI: ffffffffb2453be0
[   15.178301][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c266fa
[   15.178303][    C2] R10: ffff8880361337d3 R11: ffffffffb2e11288 R12: 0000000000000000
[   15.178305][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 15.178309][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.178314][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.178316][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.178319][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.178322][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.178326][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.178330][ C2] do_idle (kernel/sched/idle.c:325) 
[ 15.178333][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.178336][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.178339][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.178343][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.959630][    C2] INFO: lockdep is turned off.
| [   16.959817][    C2] Preemption disabled at:
| [ 16.959819][ C2] 0x0 
| [   16.960167][    C2] Tainted: [W]=WARN
[   16.960169][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.960171][    C2] Call Trace:
[   16.960173][    C2]  <IRQ>
[ 16.960175][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.960184][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 16.960191][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.960195][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.960198][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.960203][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.960207][ 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) 
[ 16.960213][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.960216][ 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) 
[ 16.960219][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.960225][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.960228][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.960235][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.960238][ 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) 
[ 16.960244][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.960247][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.960250][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.960255][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.960264][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.960268][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.960277][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.960279][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.960282][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.960286][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 16.960288][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.960291][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.960295][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 16.960300][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.960305][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.960310][ C2] __put_net (net/core/net_namespace.c:732) 
[ 16.960313][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.960318][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.960320][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.960325][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.960328][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.960340][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.960346][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.960350][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 16.960356][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.960359][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.960362][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.960366][    C2]  </IRQ>
[   16.960367][    C2]  <TASK>
[ 16.960368][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.960371][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.960375][ 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
[   16.960378][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   16.960381][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffffb21905d9
[   16.960384][    C2] RDX: ffffed1006c266fb RSI: ffffffffb2453b60 RDI: ffffffffaf98d18f
[   16.960386][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c266fa
[   16.960387][    C2] R10: ffff8880361337d3 R11: ffffffffb5b0a4b8 R12: 0000000000000000
[   16.960389][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 16.960393][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.960396][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.960400][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.960403][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.960405][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.960408][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.960412][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.960416][ C2] do_idle (kernel/sched/idle.c:325) 
[ 16.960420][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.960423][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.960425][ 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