======================================
| [ 1058.718298][ C0] #0: ffff888005757720 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma (./include/linux/mmap_lock.h:209 mm/memory.c:6238 mm/memory.c:6298) 
| [ 1058.718655][ C0] #1: ffffc90000007d60 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
| [ 1058.719028][    C0]
| [ 1058.719028][    C0] stack backtrace:
[ 1058.719281][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1058.719284][    C0] Call Trace:
[ 1058.719286][    C0]  <IRQ>
[ 1058.719288][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1058.719296][ C0] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 1058.719306][ C0] icmp6_send (./include/net/net_namespace.h:404 ./include/linux/netdevice.h:2669 net/ipv6/icmp.c:476) 
[ 1058.719324][ C0] ? __pfx_icmp6_send (net/ipv6/icmp.c:452) 
[ 1058.719333][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 1058.719337][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 1058.719340][ C0] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 1058.719350][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 1058.719356][ C0] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 1058.719363][ C0] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 1058.719365][ C0] ? neigh_invalidate (net/core/neighbour.c:1008) 
[ 1058.719370][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 1058.719374][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853) 
[ 1058.719385][ C0] ip6_link_failure (./include/linux/skbuff.h:1152 net/ipv6/route.c:2801) 
[ 1058.719393][ C0] ndisc_error_report (./include/net/dst.h:429 net/ipv6/ndisc.c:731) 
[ 1058.719399][ C0] neigh_invalidate (net/core/neighbour.c:1008) 
[ 1058.719409][ C0] neigh_timer_handler (net/core/neighbour.c:1109 (discriminator 2)) 
[ 1058.719418][ C0] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 1058.719421][ C0] call_timer_fn (kernel/time/timer.c:1789) 
[ 1058.719424][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1058.719427][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 1058.719431][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 1058.719434][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 1058.719442][ C0] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 1058.719452][ C0] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 1058.719456][ C0] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 1058.719466][ C0] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 1058.719469][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 1058.719478][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 1058.719483][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1058.719488][ C0] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 1058.719490][ C0] ? run_timer_softirq (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445) 
[ 1058.719500][ C0] run_timer_softirq (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445) 
[ 1058.719505][ C0] handle_softirqs (kernel/softirq.c:561) 
[ 1058.719518][ C0] __irq_exit_rcu (kernel/softirq.c:596 kernel/softirq.c:435 kernel/softirq.c:662) 
[ 1058.719521][ C0] irq_exit_rcu (kernel/softirq.c:680) 
[ 1058.719524][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 1058.719528][    C0]  </IRQ>
[ 1058.719529][    C0]  <TASK>
[ 1058.719531][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1058.719535][ C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 1058.719539][ C0] Code: 44 24 08 8b 74 24 04 e9 27 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 54 <49> 89 fc 48 bf 00 00 00 00 00 fc ff df 55 53 48 81 ec b8 00 00 00
All code
========
   0:	44 24 08             	rex.R and $0x8,%al
   3:	8b 74 24 04          	mov    0x4(%rsp),%esi
   7:	e9 27 ff ff ff       	jmp    0xffffffffffffff33
   c:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  13:	00 00 00 00 
  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:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	41 54                	push   %r12
  2a:*	49 89 fc             	mov    %rdi,%r12		<-- trapping instruction
  2d:	48 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdi
  34:	fc ff df 
  37:	55                   	push   %rbp
  38:	53                   	push   %rbx
  39:	48 81 ec b8 00 00 00 	sub    $0xb8,%rsp

Code starting with the faulting instruction
===========================================
   0:	49 89 fc             	mov    %rdi,%r12
   3:	48 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdi
   a:	fc ff df 
   d:	55                   	push   %rbp
   e:	53                   	push   %rbx
   f:	48 81 ec b8 00 00 00 	sub    $0xb8,%rsp
[ 1058.719542][    C0] RSP: 0018:ffffc900005b79f8 EFLAGS: 00000292
[ 1058.719545][    C0] RAX: 0000000000000001 RBX: ffffc900005b7a40 RCX: 0000000000000002
[ 1058.719547][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8c95aca0
[ 1058.719549][    C0] RBP: ffffc900005b7b20 R08: 0000000000000000 R09: 0000000000000000
[ 1058.719550][    C0] R10: ffffffff8d391197 R11: ffff888002062300 R12: 0000000000000001
[ 1058.719552][    C0] R13: 1ffff920000b6f42 R14: ffffffffffffffff R15: 0000000000000214
[ 1058.719569][ C0] mt_find (./include/linux/rcupdate.h:850 lib/maple_tree.c:6887) 
[ 1058.719573][ C0] ? mt_find (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 lib/maple_tree.c:6887) 
[ 1058.719577][ C0] ? __pfx_mt_find (lib/maple_tree.c:6875) 
[ 1058.719589][ C0] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 1058.719600][ C0] find_vma (mm/mmap.c:909) 
[ 1058.719604][ C0] ? __pfx_find_vma (mm/mmap.c:909) 
[ 1058.719611][ C0] ? down_read_trylock (kernel/locking/rwsem.c:1566 kernel/locking/rwsem.c:1561) 
[ 1058.719618][ C0] lock_mm_and_find_vma (mm/memory.c:6301) 
[ 1058.719624][ C0] do_user_addr_fault (arch/x86/mm/fault.c:1361) 
[ 1058.719639][ C0] exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:147 arch/x86/mm/fault.c:1489 arch/x86/mm/fault.c:1539) 
[ 1058.719644][ C0] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[ 1058.719647][ C0] RIP: 0010:strncpy_from_user (lib/strncpy_from_user.c:41 lib/strncpy_from_user.c:130) 
[ 1058.719651][ C0] Code: 00 00 00 48 89 fa 48 c1 ea 03 42 80 3c 0a 00 0f 85 f1 00 00 00 49 83 ee 08 49 89 44 2d 00 48 83 c5 08 49 83 fe 07 76 7a 89 f2 <49> 8b 04 2c 85 d2 74 b6 49 bf 00 00 00 00 00 fc ff df 48 89 eb eb
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 48 89             	add    %cl,-0x77(%rax)
   5:	fa                   	cli
   6:	48 c1 ea 03          	shr    $0x3,%rdx
   a:	42 80 3c 0a 00       	cmpb   $0x0,(%rdx,%r9,1)
   f:	0f 85 f1 00 00 00    	jne    0x106
  15:	49 83 ee 08          	sub    $0x8,%r14
  19:	49 89 44 2d 00       	mov    %rax,0x0(%r13,%rbp,1)
  1e:	48 83 c5 08          	add    $0x8,%rbp
  22:	49 83 fe 07          	cmp    $0x7,%r14
  26:	76 7a                	jbe    0xa2
  28:	89 f2                	mov    %esi,%edx
  2a:*	49 8b 04 2c          	mov    (%r12,%rbp,1),%rax		<-- trapping instruction
  2e:	85 d2                	test   %edx,%edx
  30:	74 b6                	je     0xffffffffffffffe8
  32:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  39:	fc ff df 
  3c:	48 89 eb             	mov    %rbp,%rbx
  3f:	eb                   	.byte 0xeb

Code starting with the faulting instruction
===========================================
   0:	49 8b 04 2c          	mov    (%r12,%rbp,1),%rax
   4:	85 d2                	test   %edx,%edx
   6:	74 b6                	je     0xffffffffffffffbe
   8:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
   f:	fc ff df 
  12:	48 89 eb             	mov    %rbp,%rbx
  15:	eb                   	.byte 0xeb
[ 1058.719654][    C0] RSP: 0018:ffffc900005b7cf8 EFLAGS: 00050246
[ 1058.719656][    C0] RAX: 00007ffffffff000 RBX: 00007f2a961922b1 RCX: 0000000000000fe0
[ 1058.719658][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88800abed7e0
[ 1058.719659][    C0] RBP: 0000000000000000 R08: fefefefefefefeff R09: dffffc0000000000
[ 1058.719661][    C0] R10: ffff88800abee7bf R11: 0000000000000000 R12: 00007f2a961922b1
[ 1058.719663][    C0] R13: ffff88800abed7e0 R14: 0000000000000fe0 R15: 8080808080808080
[ 1058.719678][ C0] ? strncpy_from_user (./arch/x86/include/asm/uaccess_64.h:70 lib/strncpy_from_user.c:129) 
[ 1058.719686][ C0] getname_flags (fs/namei.c:154) 
[ 1058.719691][ C0] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 1058.719697][ C0] user_path_at (fs/namei.c:3072) 
[ 1058.719702][ C0] user_statfs (fs/statfs.c:103) 
[ 1058.719708][ C0] ? __pfx_user_statfs (fs/statfs.c:98) 
[ 1058.719714][ C0] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 1058.719722][ C0] __do_sys_statfs (fs/statfs.c:194) 
[ 1058.719727][ C0] ? __pfx___do_sys_statfs (fs/statfs.c:191) 
[ 1058.719732][ C0] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 1058.719735][ C0] ? do_user_addr_fault (./include/linux/mmap_lock.h:218 arch/x86/mm/fault.c:1417) 
[ 1058.719742][ C0] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 1058.719754][ C0] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 1058.719759][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 1058.719766][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1058.719769][    C0] RIP: 0033:0x7f2a960174cb
[ 1058.719773][ C0] Code: c3 66 0f 1f 44 00 00 48 8b 05 31 a9 0b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 f3 0f 1e fa b8 89 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 01 a9 0b 00 f7 d8
All code
========
   0:	c3                   	ret
   1:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
   7:	48 8b 05 31 a9 0b 00 	mov    0xba931(%rip),%rax        # 0xba93f
   e:	64 c7 00 16 00 00 00 	movl   $0x16,%fs:(%rax)
  15:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  1a:	c3                   	ret
  1b:	0f 1f 40 00          	nopl   0x0(%rax)
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 89 00 00 00       	mov    $0x89,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 05                	ja     0x37
  32:	c3                   	ret
  33:	0f 1f 40 00          	nopl   0x0(%rax)
  37:	48 8b 15 01 a9 0b 00 	mov    0xba901(%rip),%rdx        # 0xba93f
  3e:	f7 d8                	neg    %eax

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 05                	ja     0xd
   8:	c3                   	ret
   9:	0f 1f 40 00          	nopl   0x0(%rax)
   d:	48 8b 15 01 a9 0b 00 	mov    0xba901(%rip),%rdx        # 0xba915
  14:	f7 d8                	neg    %eax
[ 1058.719775][    C0] RSP: 002b:00007ffe943ae548 EFLAGS: 00000246 ORIG_RAX: 0000000000000089
[ 1058.719778][    C0] RAX: ffffffffffffffda RBX: 00007ffe943ae5c0 RCX: 00007f2a960174cb
[ 1058.719780][    C0] RDX: 0000000000000000 RSI: 00007ffe943ae5c0 RDI: 00007f2a961922b1
[ 1058.719781][    C0] RBP: 00007f2a961922b1 R08: 0000000000000000 R09: 00000000069682ac
[ 1058.719783][    C0] R10: fffffffffffffe90 R11: 0000000000000246 R12: 00007ffe943ae748


Finger prints:
lockdep_rcu_suspicious:icmp6_send:ip6_link_failure:ndisc_error_report:neigh_invalidate