======================================
| [ 14.249888][ C2] #2: ffff8880050bc230 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: __pte_offset_map_lock (./include/linux/pgtable.h:347 ./include/linux/pgtable.h:624 mm/pgtable-generic.c:403) 
| [ 14.250298][ C2] #3: ffffffff8a5774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   14.250688][    C2]
| [   14.250688][    C2] stack backtrace:
[   14.250951][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.250953][    C2] Call Trace:
[   14.250955][    C2]  <IRQ>
[ 14.250956][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.250963][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 14.250968][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 14.250972][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.250978][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 14.250982][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 14.250987][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 14.250990][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 14.250994][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 14.250998][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 14.251001][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.251005][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.251010][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 14.251013][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.251017][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.251020][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.251023][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 14.251026][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.251029][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.251034][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.251036][ 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) 
[ 14.251041][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.251045][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.251047][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.251051][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 14.251055][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.251059][ C2] ? flush_tlb_mm_range (arch/x86/mm/tlb.c:1424 (discriminator 1) arch/x86/mm/tlb.c:1460 (discriminator 1)) 
[ 14.251062][ C2] ? ptep_clear_flush (mm/pgtable-generic.c:103) 
[ 14.251065][ C2] ? wp_page_copy (mm/memory.c:3545) 
[ 14.251070][ C2] ? handle_pte_fault (mm/memory.c:6013) 
[ 14.251072][ C2] ? __handle_mm_fault (mm/memory.c:6140) 
[ 14.251075][ C2] ? handle_mm_fault (mm/memory.c:6321) 
[ 14.251077][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1337) 
[ 14.251080][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 14.251085][ C2] __put_net (net/core/net_namespace.c:732) 
[ 14.251089][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.251093][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.251096][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.251099][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.251103][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.251107][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 14.251110][ C2] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 14.251113][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.251118][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.251122][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 14.251128][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.251131][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.251134][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   14.251138][    C2]  </IRQ>
[   14.251139][    C2]  <TASK>
[ 14.251140][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.251143][ C2] RIP: 0010:flush_tlb_mm_range (arch/x86/mm/tlb.c:1424 (discriminator 1) arch/x86/mm/tlb.c:1460 (discriminator 1)) 
[ 14.251146][ C2] Code: 08 84 d2 0f 85 cd 04 00 00 0f b7 85 90 08 00 00 8d 50 ff 66 83 fa 04 0f 86 50 03 00 00 66 85 c0 74 6b 4c 89 ff e8 6b d6 ff ff <65> ff 0d cc 6a 30 05 bf 01 00 00 00 e8 ca bf 0f 00 65 8b 05 e3 2d
All code
========
   0:	08 84 d2 0f 85 cd 04 	or     %al,0x4cd850f(%rdx,%rdx,8)
   7:	00 00                	add    %al,(%rax)
   9:	0f b7 85 90 08 00 00 	movzwl 0x890(%rbp),%eax
  10:	8d 50 ff             	lea    -0x1(%rax),%edx
  13:	66 83 fa 04          	cmp    $0x4,%dx
  17:	0f 86 50 03 00 00    	jbe    0x36d
  1d:	66 85 c0             	test   %ax,%ax
  20:	74 6b                	je     0x8d
  22:	4c 89 ff             	mov    %r15,%rdi
  25:	e8 6b d6 ff ff       	call   0xffffffffffffd695
  2a:*	65 ff 0d cc 6a 30 05 	decl   %gs:0x5306acc(%rip)        # 0x5306afd		<-- trapping instruction
  31:	bf 01 00 00 00       	mov    $0x1,%edi
  36:	e8 ca bf 0f 00       	call   0xfc005
  3b:	65                   	gs
  3c:	8b                   	.byte 0x8b
  3d:	05                   	.byte 0x5
  3e:	e3 2d                	jrcxz  0x6d

Code starting with the faulting instruction
===========================================
   0:	65 ff 0d cc 6a 30 05 	decl   %gs:0x5306acc(%rip)        # 0x5306ad3
   7:	bf 01 00 00 00       	mov    $0x1,%edi
   c:	e8 ca bf 0f 00       	call   0xfbfdb
  11:	65                   	gs
  12:	8b                   	.byte 0x8b
  13:	05                   	.byte 0x5
  14:	e3 2d                	jrcxz  0x43
[   14.251149][    C2] RSP: 0000:ffffc900004c7aa8 EFLAGS: 00000206
[   14.251152][    C2] RAX: 00000000000008d7 RBX: 0000000000000002 RCX: 0000000000000040
[   14.251154][    C2] RDX: 0000000000000000 RSI: ffffffff8a09175c RDI: ffffffff89853ca0
[   14.251156][    C2] RBP: ffff88800ae36940 R08: 0000000000000001 R09: 0000000000000001
[   14.251158][    C2] R10: ffffffff8afe7cd7 R11: ffff8880050bc230 R12: 000056501e646000
[   14.251159][    C2] R13: 000056501e647000 R14: ffff88800ae372c0 R15: ffff88802f537c80
[ 14.251165][ C2] ? flush_tlb_mm_range (./arch/x86/include/asm/irqflags.h:42 (discriminator 3) ./arch/x86/include/asm/irqflags.h:119 (discriminator 3) arch/x86/mm/tlb.c:1457 (discriminator 3)) 
[ 14.251169][ C2] ptep_clear_flush (mm/pgtable-generic.c:103) 
[ 14.251173][ C2] wp_page_copy (mm/memory.c:3545) 
[ 14.251179][ C2] ? __pfx_wp_page_copy (mm/memory.c:3457) 
[ 14.251182][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.251186][ C2] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 14.251190][ C2] ? do_wp_page (mm/memory.c:3939) 
[ 14.251195][ C2] handle_pte_fault (mm/memory.c:6013) 
[ 14.251198][ C2] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 14.251202][ C2] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 14.251206][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 14.251210][ C2] __handle_mm_fault (mm/memory.c:6140) 
[ 14.251213][ C2] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 14.251215][ C2] ? __lock_release (kernel/locking/lockdep.c:5585) 
[ 14.251222][ C2] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 14.251226][ C2] handle_mm_fault (mm/memory.c:6321) 
[ 14.251229][ C2] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 14.251232][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 14.251235][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.251240][ C2] do_user_addr_fault (arch/x86/mm/fault.c:1337) 
[ 14.251244][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.251248][ C2] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 14.251252][ C2] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   14.251254][    C2] RIP: 0033:0x564ff94247ac
[ 14.251259][ C2] Code: 78 03 45 89 37 48 8b 44 24 08 45 31 f6 49 89 df 4c 8b 60 38 4d 85 e4 0f 84 c3 00 00 00 48 8b 4c 24 08 4c 89 e0 4d 8b 64 24 18 <48> 89 41 30 0f b6 00 83 e8 0c 3c 04 0f 87 c2 00 00 00 45 84 f6 0f
All code
========
   0:	78 03                	js     0x5
   2:	45 89 37             	mov    %r14d,(%r15)
   5:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
   a:	45 31 f6             	xor    %r14d,%r14d
   d:	49 89 df             	mov    %rbx,%r15
  10:	4c 8b 60 38          	mov    0x38(%rax),%r12
  14:	4d 85 e4             	test   %r12,%r12
  17:	0f 84 c3 00 00 00    	je     0xe0
  1d:	48 8b 4c 24 08       	mov    0x8(%rsp),%rcx
  22:	4c 89 e0             	mov    %r12,%rax
  25:	4d 8b 64 24 18       	mov    0x18(%r12),%r12
  2a:*	48 89 41 30          	mov    %rax,0x30(%rcx)		<-- trapping instruction
  2e:	0f b6 00             	movzbl (%rax),%eax
  31:	83 e8 0c             	sub    $0xc,%eax
  34:	3c 04                	cmp    $0x4,%al
  36:	0f 87 c2 00 00 00    	ja     0xfe
  3c:	45 84 f6             	test   %r14b,%r14b
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	48 89 41 30          	mov    %rax,0x30(%rcx)
   4:	0f b6 00             	movzbl (%rax),%eax
   7:	83 e8 0c             	sub    $0xc,%eax
   a:	3c 04                	cmp    $0x4,%al
   c:	0f 87 c2 00 00 00    	ja     0xd4
  12:	45 84 f6             	test   %r14b,%r14b
  15:	0f                   	.byte 0xf
[   14.251261][    C2] RSP: 002b:00007ffcd4f7d8f0 EFLAGS: 00010206
[   14.251264][    C2] RAX: 000056501e646d00 RBX: 000056501e66f6d0 RCX: 000056501e646ca0
[   14.251265][    C2] RDX: 000056501e644710 RSI: 00007ffcd4f7d968 RDI: 0000000000000000
[   14.251267][    C2] RBP: 000056501e636e30 R08: 0000000000000000 R09: 0000000000000000
[   14.251268][    C2] R10: f070d8f38684c6f4 R11: 00007ffcd4f758b8 R12: 000056501e646d30
[   14.251270][    C2] R13: 0000000000000009 R14: 0000000000000000 R15: 000056501e66f6d0
| [   14.275421][    C2] RCU nest depth: 1, expected: 0
| [   14.275649][    C2] INFO: lockdep is turned off.
| [   14.275871][    C2] Preemption disabled at:
| [ 14.275873][ C2] 0x0 
[   14.276539][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.276541][    C2] Call Trace:
[   14.276543][    C2]  <IRQ>
[ 14.276545][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.276553][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 14.276561][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.276565][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.276568][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 14.276573][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.276579][ 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) 
[ 14.276583][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 14.276587][ 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) 
[ 14.276589][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.276595][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.276598][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.276603][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.276606][ 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) 
[ 14.276611][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.276615][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.276617][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.276623][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 14.276627][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.276631][ C2] ? flush_tlb_mm_range (arch/x86/mm/tlb.c:1424 (discriminator 1) arch/x86/mm/tlb.c:1460 (discriminator 1)) 
[ 14.276634][ C2] ? ptep_clear_flush (mm/pgtable-generic.c:103) 
[ 14.276640][ C2] ? wp_page_copy (mm/memory.c:3545) 
[ 14.276645][ C2] ? handle_pte_fault (mm/memory.c:6013) 
[ 14.276649][ C2] ? __handle_mm_fault (mm/memory.c:6140) 
[ 14.276652][ C2] ? handle_mm_fault (mm/memory.c:6321) 
[ 14.276655][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1337) 
[ 14.276660][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 14.276667][ C2] __put_net (net/core/net_namespace.c:732) 
[ 14.276672][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.276676][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.276679][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.276682][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.276687][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.276690][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 14.276695][ C2] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 14.276698][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.276703][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.276708][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 14.276713][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.276717][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.276720][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   14.276723][    C2]  </IRQ>
[   14.276724][    C2]  <TASK>
[ 14.276726][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.276729][ C2] RIP: 0010:flush_tlb_mm_range (arch/x86/mm/tlb.c:1424 (discriminator 1) arch/x86/mm/tlb.c:1460 (discriminator 1)) 
[ 14.276733][ C2] Code: 08 84 d2 0f 85 cd 04 00 00 0f b7 85 90 08 00 00 8d 50 ff 66 83 fa 04 0f 86 50 03 00 00 66 85 c0 74 6b 4c 89 ff e8 6b d6 ff ff <65> ff 0d cc 6a 30 05 bf 01 00 00 00 e8 ca bf 0f 00 65 8b 05 e3 2d
All code
========
   0:	08 84 d2 0f 85 cd 04 	or     %al,0x4cd850f(%rdx,%rdx,8)
   7:	00 00                	add    %al,(%rax)
   9:	0f b7 85 90 08 00 00 	movzwl 0x890(%rbp),%eax
  10:	8d 50 ff             	lea    -0x1(%rax),%edx
  13:	66 83 fa 04          	cmp    $0x4,%dx
  17:	0f 86 50 03 00 00    	jbe    0x36d
  1d:	66 85 c0             	test   %ax,%ax
  20:	74 6b                	je     0x8d
  22:	4c 89 ff             	mov    %r15,%rdi
  25:	e8 6b d6 ff ff       	call   0xffffffffffffd695
  2a:*	65 ff 0d cc 6a 30 05 	decl   %gs:0x5306acc(%rip)        # 0x5306afd		<-- trapping instruction
  31:	bf 01 00 00 00       	mov    $0x1,%edi
  36:	e8 ca bf 0f 00       	call   0xfc005
  3b:	65                   	gs
  3c:	8b                   	.byte 0x8b
  3d:	05                   	.byte 0x5
  3e:	e3 2d                	jrcxz  0x6d

Code starting with the faulting instruction
===========================================
   0:	65 ff 0d cc 6a 30 05 	decl   %gs:0x5306acc(%rip)        # 0x5306ad3
   7:	bf 01 00 00 00       	mov    $0x1,%edi
   c:	e8 ca bf 0f 00       	call   0xfbfdb
  11:	65                   	gs
  12:	8b                   	.byte 0x8b
  13:	05                   	.byte 0x5
  14:	e3 2d                	jrcxz  0x43
[   14.276735][    C2] RSP: 0000:ffffc900004c7aa8 EFLAGS: 00000206
[   14.276739][    C2] RAX: 00000000000008d7 RBX: 0000000000000002 RCX: 0000000000000040
[   14.276741][    C2] RDX: 0000000000000000 RSI: ffffffff8a09175c RDI: ffffffff89853ca0
[   14.276743][    C2] RBP: ffff88800ae36940 R08: 0000000000000001 R09: 0000000000000001
[   14.276744][    C2] R10: ffffffff8afe7cd7 R11: ffff8880050bc230 R12: 000056501e646000
[   14.276746][    C2] R13: 000056501e647000 R14: ffff88800ae372c0 R15: ffff88802f537c80
[ 14.276752][ C2] ? flush_tlb_mm_range (./arch/x86/include/asm/irqflags.h:42 (discriminator 3) ./arch/x86/include/asm/irqflags.h:119 (discriminator 3) arch/x86/mm/tlb.c:1457 (discriminator 3)) 
[ 14.276756][ C2] ptep_clear_flush (mm/pgtable-generic.c:103) 
[ 14.276760][ C2] wp_page_copy (mm/memory.c:3545) 
[ 14.276766][ C2] ? __pfx_wp_page_copy (mm/memory.c:3457) 
[ 14.276769][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.276773][ C2] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 14.276778][ C2] ? do_wp_page (mm/memory.c:3939) 
[ 14.276782][ C2] handle_pte_fault (mm/memory.c:6013) 
[ 14.276786][ C2] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 14.276790][ C2] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 14.276793][ C2] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 14.276797][ C2] __handle_mm_fault (mm/memory.c:6140) 
[ 14.276800][ C2] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 14.276803][ C2] ? __lock_release (kernel/locking/lockdep.c:5585) 
[ 14.276810][ C2] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 14.276813][ C2] handle_mm_fault (mm/memory.c:6321) 
[ 14.276816][ C2] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 14.276819][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 14.276822][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 14.276827][ C2] do_user_addr_fault (arch/x86/mm/fault.c:1337) 
[ 14.276831][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.276836][ C2] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 14.276840][ C2] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   14.276842][    C2] RIP: 0033:0x564ff94247ac
[ 14.276846][ C2] Code: 78 03 45 89 37 48 8b 44 24 08 45 31 f6 49 89 df 4c 8b 60 38 4d 85 e4 0f 84 c3 00 00 00 48 8b 4c 24 08 4c 89 e0 4d 8b 64 24 18 <48> 89 41 30 0f b6 00 83 e8 0c 3c 04 0f 87 c2 00 00 00 45 84 f6 0f
All code
========
   0:	78 03                	js     0x5
   2:	45 89 37             	mov    %r14d,(%r15)
   5:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
   a:	45 31 f6             	xor    %r14d,%r14d
   d:	49 89 df             	mov    %rbx,%r15
  10:	4c 8b 60 38          	mov    0x38(%rax),%r12
  14:	4d 85 e4             	test   %r12,%r12
  17:	0f 84 c3 00 00 00    	je     0xe0
  1d:	48 8b 4c 24 08       	mov    0x8(%rsp),%rcx
  22:	4c 89 e0             	mov    %r12,%rax
  25:	4d 8b 64 24 18       	mov    0x18(%r12),%r12
  2a:*	48 89 41 30          	mov    %rax,0x30(%rcx)		<-- trapping instruction
  2e:	0f b6 00             	movzbl (%rax),%eax
  31:	83 e8 0c             	sub    $0xc,%eax
  34:	3c 04                	cmp    $0x4,%al
  36:	0f 87 c2 00 00 00    	ja     0xfe
  3c:	45 84 f6             	test   %r14b,%r14b
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	48 89 41 30          	mov    %rax,0x30(%rcx)
   4:	0f b6 00             	movzbl (%rax),%eax
   7:	83 e8 0c             	sub    $0xc,%eax
   a:	3c 04                	cmp    $0x4,%al
   c:	0f 87 c2 00 00 00    	ja     0xd4
  12:	45 84 f6             	test   %r14b,%r14b
  15:	0f                   	.byte 0xf
[   14.276848][    C2] RSP: 002b:00007ffcd4f7d8f0 EFLAGS: 00010206
[   14.276850][    C2] RAX: 000056501e646d00 RBX: 000056501e66f6d0 RCX: 000056501e646ca0
[   14.276852][    C2] RDX: 000056501e644710 RSI: 00007ffcd4f7d968 RDI: 0000000000000000
[   14.276854][    C2] RBP: 000056501e636e30 R08: 0000000000000000 R09: 0000000000000000
[   14.276855][    C2] R10: f070d8f38684c6f4 R11: 00007ffcd4f758b8 R12: 000056501e646d30


Finger prints:
__might_resched:down_write:simple_recursive_removal:debugfs_remove:ref_tracker_dir_exit
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock