======================================
| [ 17.025361][ C0] #0: ffff8880096440c8 (vm_lock){++++}-{0:0}, at: do_user_addr_fault (arch/x86/mm/fault.c:1328) 
| [ 17.025937][ C0] #1: ffffffffb2f749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   17.026522][    C0]
| [   17.026522][    C0] stack backtrace:
[   17.026927][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.026930][    C0] Call Trace:
[   17.026933][    C0]  <IRQ>
[ 17.026936][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.026945][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 17.026954][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 17.026963][ C0] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 17.026971][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 17.026979][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 17.026986][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 17.026992][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 17.027002][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 17.027007][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.027013][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.027021][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 17.027025][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.027032][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.027037][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.027041][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 17.027047][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.027053][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.027060][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.027065][ C0] ? __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:2366) 
[ 17.027072][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.027077][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.027080][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.027082][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.027087][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.027091][ C0] ? copy_mc_enhanced_fast_string (arch/x86/lib/copy_mc_64.S:130) 
[ 17.027094][ C0] ? __wp_page_copy_user (mm/memory.c:3170) 
[ 17.027100][ C0] ? wp_page_copy (mm/memory.c:3486) 
[ 17.027103][ C0] ? handle_pte_fault (mm/memory.c:6013) 
[ 17.027106][ C0] ? __handle_mm_fault (mm/memory.c:6140) 
[ 17.027109][ C0] ? handle_mm_fault (mm/memory.c:6321) 
[ 17.027111][ C0] ? do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 17.027114][ C0] ? 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:1488 arch/x86/mm/fault.c:1538) 
[ 17.027119][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.027123][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.027127][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.027130][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.027134][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 17.027138][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.027141][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 17.027145][ C0] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 17.027148][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 17.027153][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.027156][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.027161][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.027163][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.027166][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.027169][    C0]  </IRQ>
[   17.027170][    C0]  <TASK>
[ 17.027172][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.027175][ C0] RIP: 0010:copy_mc_enhanced_fast_string (arch/x86/lib/copy_mc_64.S:130) 
[ 17.027178][ C0] Code: 89 ca e9 7d fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 d1 <f3> a4 31 c0 c3 cc cc cc cc 48 89 c8 c3 cc cc cc cc 66 0f 1f 84 00
All code
========
   0:	89 ca                	mov    %ecx,%edx
   2:	e9 7d fe ff ff       	jmp    0xfffffffffffffe84
   7:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 00 
  12:	66 90                	xchg   %ax,%ax
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	48 89 f8             	mov    %rdi,%rax
  27:	48 89 d1             	mov    %rdx,%rcx
  2a:*	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi)		<-- trapping instruction
  2c:	31 c0                	xor    %eax,%eax
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	48 89 c8             	mov    %rcx,%rax
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	66                   	data16
  3c:	0f                   	.byte 0xf
  3d:	1f                   	(bad)
  3e:	84 00                	test   %al,(%rax)

Code starting with the faulting instruction
===========================================
   0:	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi)
   2:	31 c0                	xor    %eax,%eax
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 89 c8             	mov    %rcx,%rax
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	66                   	data16
  12:	0f                   	.byte 0xf
  13:	1f                   	(bad)
  14:	84 00                	test   %al,(%rax)
[   17.027181][    C0] RSP: 0000:ffffc90000a27ad8 EFLAGS: 00010246
[   17.027184][    C0] RAX: ffff8880146a2000 RBX: ffffc90000a27d30 RCX: 0000000000000d00
[   17.027186][    C0] RDX: 0000000000001000 RSI: ffff88800c716300 RDI: ffff8880146a2300
[   17.027188][    C0] RBP: ffff8880146a2000 R08: 0000000000000000 R09: ffffed10018e2dff
[   17.027190][    C0] R10: ffff88800c716fff R11: 0000000000000000 R12: ffff888009794640
[   17.027192][    C0] R13: 00007f0e90040000 R14: ffffea0000000000 R15: ffff888009794640
[ 17.027198][ C0] __wp_page_copy_user (mm/memory.c:3170) 
[ 17.027202][ C0] wp_page_copy (mm/memory.c:3486) 
[ 17.027207][ C0] ? __pfx_wp_page_copy (mm/memory.c:3457) 
[ 17.027211][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.027214][ C0] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 17.027218][ C0] ? do_wp_page (mm/memory.c:3939) 
[ 17.027222][ C0] handle_pte_fault (mm/memory.c:6013) 
[ 17.027227][ C0] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 17.027231][ C0] ? reacquire_held_locks (kernel/locking/lockdep.c:5383) 
[ 17.027234][ C0] ? do_user_addr_fault (arch/x86/mm/fault.c:1328) 
[ 17.027239][ C0] __handle_mm_fault (mm/memory.c:6140) 
[ 17.027242][ C0] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 17.027244][ C0] ? __lock_release (kernel/locking/lockdep.c:5580) 
[ 17.027250][ C0] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 17.027255][ C0] handle_mm_fault (mm/memory.c:6321) 
[ 17.027258][ C0] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 17.027261][ C0] ? 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:1488 arch/x86/mm/fault.c:1538) 
[ 17.027264][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.027268][ C0] do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 17.027272][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.027276][ C0] 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:1488 arch/x86/mm/fault.c:1538) 
[ 17.027280][ C0] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   17.027283][    C0] RIP: 0033:0x7f0e8fed0c68
[ 17.027287][ C0] Code: 54 55 53 8b 07 48 89 fb 25 00 80 00 00 75 34 64 48 8b 2c 25 10 00 00 00 48 8b bf 88 00 00 00 48 39 6f 08 74 1a ba 01 00 00 00 <f0> 0f b1 17 0f 85 8e 00 00 00 48 8b bb 88 00 00 00 48 89 6f 08 83
All code
========
   0:	54                   	push   %rsp
   1:	55                   	push   %rbp
   2:	53                   	push   %rbx
   3:	8b 07                	mov    (%rdi),%eax
   5:	48 89 fb             	mov    %rdi,%rbx
   8:	25 00 80 00 00       	and    $0x8000,%eax
   d:	75 34                	jne    0x43
   f:	64 48 8b 2c 25 10 00 	mov    %fs:0x10,%rbp
  16:	00 00 
  18:	48 8b bf 88 00 00 00 	mov    0x88(%rdi),%rdi
  1f:	48 39 6f 08          	cmp    %rbp,0x8(%rdi)
  23:	74 1a                	je     0x3f
  25:	ba 01 00 00 00       	mov    $0x1,%edx
  2a:*	f0 0f b1 17          	lock cmpxchg %edx,(%rdi)		<-- trapping instruction
  2e:	0f 85 8e 00 00 00    	jne    0xc2
  34:	48 8b bb 88 00 00 00 	mov    0x88(%rbx),%rdi
  3b:	48 89 6f 08          	mov    %rbp,0x8(%rdi)
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	f0 0f b1 17          	lock cmpxchg %edx,(%rdi)
   4:	0f 85 8e 00 00 00    	jne    0x98
   a:	48 8b bb 88 00 00 00 	mov    0x88(%rbx),%rdi
  11:	48 89 6f 08          	mov    %rbp,0x8(%rdi)
  15:	83                   	.byte 0x83
[   17.027290][    C0] RSP: 002b:00007ffd4537ab50 EFLAGS: 00010287
[   17.027292][    C0] RAX: 0000000000000000 RBX: 00007f0e9003f760 RCX: 00007f0e8ff8382b
[   17.027293][    C0] RDX: 0000000000000001 RSI: 00005655216684d0 RDI: 00007f0e90040a50
[   17.027295][    C0] RBP: 00007f0e8fe42740 R08: 0000000000000006 R09: 0000000000000020
[   17.027297][    C0] R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000000
[   17.027298][    C0] R13: 0000000000000001 R14: 00005655216684d0 R15: 0000000000000001
| [   17.060765][    C0] RCU nest depth: 0, expected: 0
| [   17.060958][    C0] INFO: lockdep is turned off.
| [   17.061140][    C0] Preemption disabled at:
| [ 17.061141][ C0] handle_softirqs (kernel/softirq.c:553) 
[   17.061527][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.061530][    C0] Call Trace:
[   17.061533][    C0]  <IRQ>
[ 17.061536][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.061543][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 17.061549][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.061553][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.061556][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.061561][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.061567][ C0] ? 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) 
[ 17.061572][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.061575][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.061579][ C0] ? 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) 
[ 17.061584][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.061587][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.061592][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.061595][ C0] ? __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:2366) 
[ 17.061600][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.061605][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.061608][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.061610][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.061615][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.061619][ C0] ? copy_mc_enhanced_fast_string (arch/x86/lib/copy_mc_64.S:130) 
[ 17.061623][ C0] ? __wp_page_copy_user (mm/memory.c:3170) 
[ 17.061628][ C0] ? wp_page_copy (mm/memory.c:3486) 
[ 17.061632][ C0] ? handle_pte_fault (mm/memory.c:6013) 
[ 17.061635][ C0] ? __handle_mm_fault (mm/memory.c:6140) 
[ 17.061638][ C0] ? handle_mm_fault (mm/memory.c:6321) 
[ 17.061640][ C0] ? do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 17.061645][ C0] ? 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:1488 arch/x86/mm/fault.c:1538) 
[ 17.061650][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.061654][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.061658][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.061661][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.061665][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 17.061669][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.061673][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 17.061677][ C0] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 17.061680][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 17.061685][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.061689][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.061693][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.061696][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.061698][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.061702][    C0]  </IRQ>
[   17.061703][    C0]  <TASK>
[ 17.061705][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.061707][ C0] RIP: 0010:copy_mc_enhanced_fast_string (arch/x86/lib/copy_mc_64.S:130) 
[ 17.061712][ C0] Code: 89 ca e9 7d fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 d1 <f3> a4 31 c0 c3 cc cc cc cc 48 89 c8 c3 cc cc cc cc 66 0f 1f 84 00
All code
========
   0:	89 ca                	mov    %ecx,%edx
   2:	e9 7d fe ff ff       	jmp    0xfffffffffffffe84
   7:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   e:	00 00 00 00 
  12:	66 90                	xchg   %ax,%ax
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	48 89 f8             	mov    %rdi,%rax
  27:	48 89 d1             	mov    %rdx,%rcx
  2a:*	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi)		<-- trapping instruction
  2c:	31 c0                	xor    %eax,%eax
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	48 89 c8             	mov    %rcx,%rax
  36:	c3                   	ret
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	66                   	data16
  3c:	0f                   	.byte 0xf
  3d:	1f                   	(bad)
  3e:	84 00                	test   %al,(%rax)

Code starting with the faulting instruction
===========================================
   0:	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi)
   2:	31 c0                	xor    %eax,%eax
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	48 89 c8             	mov    %rcx,%rax
   c:	c3                   	ret
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	66                   	data16
  12:	0f                   	.byte 0xf
  13:	1f                   	(bad)
  14:	84 00                	test   %al,(%rax)
[   17.061714][    C0] RSP: 0000:ffffc90000a27ad8 EFLAGS: 00010246
[   17.061718][    C0] RAX: ffff8880146a2000 RBX: ffffc90000a27d30 RCX: 0000000000000d00
[   17.061720][    C0] RDX: 0000000000001000 RSI: ffff88800c716300 RDI: ffff8880146a2300
[   17.061722][    C0] RBP: ffff8880146a2000 R08: 0000000000000000 R09: ffffed10018e2dff
[   17.061724][    C0] R10: ffff88800c716fff R11: 0000000000000000 R12: ffff888009794640
[   17.061726][    C0] R13: 00007f0e90040000 R14: ffffea0000000000 R15: ffff888009794640
[ 17.061732][ C0] __wp_page_copy_user (mm/memory.c:3170) 
[ 17.061736][ C0] wp_page_copy (mm/memory.c:3486) 
[ 17.061741][ C0] ? __pfx_wp_page_copy (mm/memory.c:3457) 
[ 17.061745][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.061748][ C0] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 17.061752][ C0] ? do_wp_page (mm/memory.c:3939) 
[ 17.061757][ C0] handle_pte_fault (mm/memory.c:6013) 
[ 17.061761][ C0] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 17.061765][ C0] ? reacquire_held_locks (kernel/locking/lockdep.c:5383) 
[ 17.061769][ C0] ? do_user_addr_fault (arch/x86/mm/fault.c:1328) 
[ 17.061774][ C0] __handle_mm_fault (mm/memory.c:6140) 
[ 17.061777][ C0] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 17.061779][ C0] ? __lock_release (kernel/locking/lockdep.c:5580) 
[ 17.061785][ C0] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 17.061790][ C0] handle_mm_fault (mm/memory.c:6321) 
[ 17.061793][ C0] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 17.061795][ C0] ? 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:1488 arch/x86/mm/fault.c:1538) 
[ 17.061798][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.061802][ C0] do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 17.061806][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.061811][ C0] 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:1488 arch/x86/mm/fault.c:1538) 
[ 17.061815][ C0] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   17.061818][    C0] RIP: 0033:0x7f0e8fed0c68
[ 17.061822][ C0] Code: 54 55 53 8b 07 48 89 fb 25 00 80 00 00 75 34 64 48 8b 2c 25 10 00 00 00 48 8b bf 88 00 00 00 48 39 6f 08 74 1a ba 01 00 00 00 <f0> 0f b1 17 0f 85 8e 00 00 00 48 8b bb 88 00 00 00 48 89 6f 08 83
All code
========
   0:	54                   	push   %rsp
   1:	55                   	push   %rbp
   2:	53                   	push   %rbx
   3:	8b 07                	mov    (%rdi),%eax
   5:	48 89 fb             	mov    %rdi,%rbx
   8:	25 00 80 00 00       	and    $0x8000,%eax
   d:	75 34                	jne    0x43
   f:	64 48 8b 2c 25 10 00 	mov    %fs:0x10,%rbp
  16:	00 00 
  18:	48 8b bf 88 00 00 00 	mov    0x88(%rdi),%rdi
  1f:	48 39 6f 08          	cmp    %rbp,0x8(%rdi)
  23:	74 1a                	je     0x3f
  25:	ba 01 00 00 00       	mov    $0x1,%edx
  2a:*	f0 0f b1 17          	lock cmpxchg %edx,(%rdi)		<-- trapping instruction
  2e:	0f 85 8e 00 00 00    	jne    0xc2
  34:	48 8b bb 88 00 00 00 	mov    0x88(%rbx),%rdi
  3b:	48 89 6f 08          	mov    %rbp,0x8(%rdi)
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	f0 0f b1 17          	lock cmpxchg %edx,(%rdi)
   4:	0f 85 8e 00 00 00    	jne    0x98
   a:	48 8b bb 88 00 00 00 	mov    0x88(%rbx),%rdi
  11:	48 89 6f 08          	mov    %rbp,0x8(%rdi)
  15:	83                   	.byte 0x83
[   17.061825][    C0] RSP: 002b:00007ffd4537ab50 EFLAGS: 00010287
[   17.061827][    C0] RAX: 0000000000000000 RBX: 00007f0e9003f760 RCX: 00007f0e8ff8382b
[   17.061829][    C0] RDX: 0000000000000001 RSI: 00005655216684d0 RDI: 00007f0e90040a50
[   17.061830][    C0] RBP: 00007f0e8fe42740 R08: 0000000000000006 R09: 0000000000000020
[   17.061832][    C0] R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000000
[   17.061834][    C0] R13: 0000000000000001 R14: 00005655216684d0 R15: 0000000000000001
| [   19.522713][    C1] INFO: lockdep is turned off.
| [   19.522945][    C1] Preemption disabled at:
| [ 19.522947][ C1] handle_softirqs (kernel/softirq.c:553) 
| [   19.523321][    C1] Tainted: [W]=WARN
[   19.523322][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.523324][    C1] Call Trace:
[   19.523326][    C1]  <TASK>
[ 19.523328][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 19.523336][ C1] __might_resched (kernel/sched/core.c:8819) 
[ 19.523343][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 19.523347][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 19.523350][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 19.523355][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.523362][ C1] ? 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) 
[ 19.523366][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 19.523369][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 19.523374][ C1] ? 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) 
[ 19.523378][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 19.523381][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 19.523386][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 19.523389][ C1] ? __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:2366) 
[ 19.523395][ C1] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 19.523399][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 19.523402][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 19.523405][ C1] ? kthread (kernel/kthread.c:464) 
[ 19.523409][ C1] ? ret_from_fork (arch/x86/kernel/process.c:153) 
[ 19.523412][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 19.523417][ C1] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) 
[ 19.523422][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2392) 
[ 19.523426][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 19.523430][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.523435][ C1] __put_net (net/core/net_namespace.c:732) 
[ 19.523439][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 19.523442][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 19.523445][ C1] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 19.523451][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 19.523455][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.523459][ C1] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 19.523465][ C1] rcu_core (kernel/rcu/tree.c:2826) 
[ 19.523468][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 19.523472][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 19.523475][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 19.523477][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 19.523481][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 19.523484][ C1] kthread (kernel/kthread.c:464) 
[ 19.523488][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 19.523490][ C1] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 19.523492][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 19.523496][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.523499][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 19.523503][ C1] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 19.523505][ C1] ? __pfx_kthread (kernel/kthread.c:413) 


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
handle_softirqs:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal