======================================
| [   17.552600][    C3] 1 lock held by swapper/3/0:
| [ 17.552827][ C3] #0: ffffffff8e1774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   17.553183][    C3]
| [   17.553183][    C3] stack backtrace:
[   17.553427][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.553429][    C3] Call Trace:
[   17.553432][    C3]  <IRQ>
[ 17.553438][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.553450][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 17.553456][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 17.553461][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 17.553467][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 17.553473][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 17.553477][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 17.553480][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 17.553483][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.553487][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 17.553491][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.553496][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.553501][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 17.553503][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.553508][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.553512][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 17.553515][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 17.553519][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.553524][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.553531][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.553535][ 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) 
[ 17.553543][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.553545][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.553550][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.553555][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.553563][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.553570][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.553574][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.553577][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.553580][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.553584][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 17.553587][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.553589][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.553594][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.553603][ C3] __put_net (net/core/net_namespace.c:732) 
[ 17.553607][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.553611][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.553614][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.553617][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.553622][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.553625][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.553629][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.553632][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.553637][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.553643][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 17.553652][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.553655][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.553658][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.553662][    C3]  </IRQ>
[   17.553663][    C3]  <TASK>
[ 17.553665][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.553668][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.553673][ 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
[   17.553676][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   17.553679][    C3] RAX: 0000000000049763 RBX: 1ffff9200002afc1 RCX: ffffffff8d1905d9
[   17.553681][    C3] RDX: 0000000000000000 RSI: ffffffff8dc8f4e4 RDI: ffffffff8d453be0
[   17.553683][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c366fa
[   17.553685][    C3] R10: ffff8880361b37d3 R11: ffffffff8de11288 R12: 0000000000000000
[   17.553686][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 17.553694][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.553699][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.553701][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.553704][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.553707][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.553711][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.553716][ C3] do_idle (kernel/sched/idle.c:325) 
[ 17.553719][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.553722][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.553725][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 17.553730][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.571235][    C3] RCU nest depth: 0, expected: 0
| [   17.571429][    C3] INFO: lockdep is turned off.
| [   17.571614][    C3] Preemption disabled at:
| [ 17.571616][ C3] 0x0 
[   17.571966][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.571968][    C3] Call Trace:
[   17.571970][    C3]  <IRQ>
[ 17.571973][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.571984][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 17.571993][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.571998][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.572001][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.572006][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.572013][ 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) 
[ 17.572020][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.572023][ 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) 
[ 17.572026][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.572032][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.572035][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.572043][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.572047][ 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) 
[ 17.572054][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.572057][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.572061][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.572067][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.572073][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.572078][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.572081][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.572084][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.572087][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.572091][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 17.572093][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.572096][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.572101][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 17.572113][ C3] __put_net (net/core/net_namespace.c:732) 
[ 17.572120][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.572126][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.572129][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.572133][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.572140][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.572144][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.572149][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.572152][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.572157][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.572162][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 17.572168][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.572171][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.572173][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.572177][    C3]  </IRQ>
[   17.572178][    C3]  <TASK>
[ 17.572180][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.572182][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 17.572187][ 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
[   17.572190][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   17.572194][    C3] RAX: 0000000000049763 RBX: 1ffff9200002afc1 RCX: ffffffff8d1905d9
[   17.572195][    C3] RDX: 0000000000000000 RSI: ffffffff8dc8f4e4 RDI: ffffffff8d453be0
[   17.572197][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c366fa
[   17.572199][    C3] R10: ffff8880361b37d3 R11: ffffffff8de11288 R12: 0000000000000000
[   17.572200][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 17.572204][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 17.572209][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 17.572212][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 17.572214][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 17.572218][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 17.572221][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 17.572226][ C3] do_idle (kernel/sched/idle.c:325) 
[ 17.572234][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 17.572237][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 17.572240][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 17.572245][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   20.541193][    C2] INFO: lockdep is turned off.
| [   20.541397][    C2] Preemption disabled at:
| [ 20.541399][ C2] 0x0 
| [   20.541790][    C2] Tainted: [W]=WARN
[   20.541792][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.541794][    C2] Call Trace:
[   20.541797][    C2]  <IRQ>
[ 20.541799][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.541811][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 20.541821][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 20.541827][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 20.541830][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 20.541836][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.541843][ 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) 
[ 20.541851][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 20.541854][ 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) 
[ 20.541857][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 20.541864][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 20.541868][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 20.541876][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 20.541880][ 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) 
[ 20.541888][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.541892][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 20.541895][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.541902][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 20.541909][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.541914][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.541917][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.541920][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.541923][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.541927][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 20.541930][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.541932][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 20.541937][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 20.541945][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 20.541951][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.541955][ C2] __put_net (net/core/net_namespace.c:732) 
[ 20.541960][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 20.541965][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.541967][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 20.541972][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 20.541975][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 20.541982][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.541989][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 20.541994][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 20.542000][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.542003][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.542005][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   20.542009][    C2]  </IRQ>
[   20.542010][    C2]  <TASK>
[ 20.542012][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.542015][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 20.542019][ 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
[   20.542022][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   20.542026][    C2] RAX: 0000000000000002 RBX: 1ffff92000028fc1 RCX: ffffffff8d1905d9
[   20.542029][    C2] RDX: ffffed1006c266fb RSI: ffffffff8d453b60 RDI: ffffffff8a98d18f
[   20.542030][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c266fa
[   20.542032][    C2] R10: ffff8880361337d3 R11: ffffffff90a4c618 R12: 0000000000000000
[   20.542034][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 20.542038][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 20.542042][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.542046][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 20.542048][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 20.542051][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 20.542054][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 20.542058][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 20.542062][ C2] do_idle (kernel/sched/idle.c:325) 
[ 20.542066][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 20.542069][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 20.542072][ 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