======================================
| [   22.112225][    C2] 1 lock held by swapper/2/0:
| [ 22.112540][ C2] #0: ffffffff9c5774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   22.113095][    C2]
| [   22.113095][    C2] stack backtrace:
[   22.113496][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.113500][    C2] Call Trace:
[   22.113503][    C2]  <IRQ>
[ 22.113508][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 22.113519][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 22.113527][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 22.113535][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 22.113544][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 22.113553][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 22.113560][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 22.113565][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 22.113570][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.113577][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 22.113582][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 22.113590][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.113597][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 22.113601][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 22.113609][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 22.113614][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 22.113619][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 22.113626][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 22.113631][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 22.113642][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 22.113647][ 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) 
[ 22.113655][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 22.113660][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 22.113665][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 22.113669][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 22.113677][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 22.113682][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 22.113687][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 22.113692][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 22.113696][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 22.113701][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 22.113705][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 22.113709][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 22.113714][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 22.113726][ C2] __put_net (net/core/net_namespace.c:732) 
[ 22.113732][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 22.113738][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 22.113742][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 22.113748][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.113755][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 22.113761][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.113767][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.113772][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.113780][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 22.113787][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 22.113796][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 22.113801][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 22.113805][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   22.113811][    C2]  </IRQ>
[   22.113813][    C2]  <TASK>
[ 22.113816][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 22.113821][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 22.113827][ 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
[   22.113831][    C2] RSP: 0000:ffffc90000147de8 EFLAGS: 00000246
[   22.113836][    C2] RAX: 000000000004bfa5 RBX: 1ffff92000028fc1 RCX: ffffffff9b5905d9
[   22.113839][    C2] RDX: 0000000000000000 RSI: ffffffff9c08f4e4 RDI: ffffffff9b853be0
[   22.113842][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ea66fa
[   22.113845][    C2] R10: ffff88802f5337d3 R11: ffffffff9c211288 R12: 0000000000000000
[   22.113848][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 22.113855][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 22.113862][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 22.113866][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 22.113871][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 22.113876][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 22.113883][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 22.113890][ C2] do_idle (kernel/sched/idle.c:325) 
[ 22.113896][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 22.113901][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 22.113906][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 22.113915][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   22.141176][    C2] RCU nest depth: 0, expected: 0
| [   22.141500][    C2] INFO: lockdep is turned off.
| [   22.141826][    C2] Preemption disabled at:
| [ 22.141830][ C2] 0x0 
[   22.142402][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.142405][    C2] Call Trace:
[   22.142408][    C2]  <IRQ>
[ 22.142412][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 22.142424][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 22.142436][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 22.142443][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 22.142448][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 22.142455][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.142462][ 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) 
[ 22.142472][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 22.142477][ 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) 
[ 22.142481][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 22.142490][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 22.142494][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 22.142502][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 22.142507][ 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) 
[ 22.142515][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 22.142520][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 22.142525][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 22.142531][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 22.142537][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 22.142542][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 22.142547][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 22.142551][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 22.142555][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 22.142561][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 22.142564][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 22.142568][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 22.142573][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 22.142585][ C2] __put_net (net/core/net_namespace.c:732) 
[ 22.142591][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 22.142598][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 22.142602][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 22.142608][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.142616][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 22.142622][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.142628][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.142633][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.142640][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 22.142647][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 22.142656][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 22.142661][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 22.142665][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   22.142671][    C2]  </IRQ>
[   22.142672][    C2]  <TASK>
[ 22.142675][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 22.142680][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 22.142686][ 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
[   22.142690][    C2] RSP: 0000:ffffc90000147de8 EFLAGS: 00000246
[   22.142696][    C2] RAX: 000000000004bfa5 RBX: 1ffff92000028fc1 RCX: ffffffff9b5905d9
[   22.142699][    C2] RDX: 0000000000000000 RSI: ffffffff9c08f4e4 RDI: ffffffff9b853be0
[   22.142702][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ea66fa
[   22.142705][    C2] R10: ffff88802f5337d3 R11: ffffffff9c211288 R12: 0000000000000000
[   22.142708][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 22.142714][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 22.142724][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 22.142728][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 22.142732][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 22.142738][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 22.142744][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 22.142751][ C2] do_idle (kernel/sched/idle.c:325) 
[ 22.142757][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 22.142762][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 22.142767][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 22.142775][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   27.555604][    C2] INFO: lockdep is turned off.
| [   27.555975][    C2] Preemption disabled at:
| [ 27.555978][ C2] 0x0 
| [   27.556542][    C2] Tainted: [W]=WARN
[   27.556545][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.556548][    C2] Call Trace:
[   27.556552][    C2]  <IRQ>
[ 27.556557][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 27.556572][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 27.556584][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 27.556591][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 27.556596][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 27.556604][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.556612][ 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) 
[ 27.556621][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 27.556625][ 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) 
[ 27.556629][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 27.556639][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 27.556644][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 27.556653][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 27.556658][ 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) 
[ 27.556667][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 27.556672][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 27.556677][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 27.556685][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 27.556692][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 27.556699][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 27.556703][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 27.556707][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 27.556711][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 27.556720][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 27.556724][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 27.556729][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 27.556735][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 27.556744][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 27.556752][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.556761][ C2] __put_net (net/core/net_namespace.c:732) 
[ 27.556767][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 27.556774][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 27.556779][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 27.556787][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 27.556793][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.556800][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 27.556808][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 27.556816][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 27.556821][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 27.556826][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   27.556833][    C2]  </IRQ>
[   27.556835][    C2]  <TASK>
[ 27.556838][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 27.556844][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 27.556851][ 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
[   27.556855][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   27.556862][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffff9b5905d9
[   27.556866][    C2] RDX: ffffed1005ea66fb RSI: ffffffff9b853b60 RDI: ffffffff98d8d18f
[   27.556870][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1005ea66fa
[   27.556873][    C2] R10: ffff88802f5337d3 R11: ffff888001bdcad8 R12: 0000000000000000
[   27.556876][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 27.556882][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 27.556886][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 27.556892][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 27.556897][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 27.556901][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 27.556906][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 27.556911][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 27.556918][ C2] do_idle (kernel/sched/idle.c:325) 
[ 27.556924][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 27.556929][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 27.556934][ 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