======================================
| [ 3520.249729][T18780] IPv6: Can't replace route, no match found
| [ 3626.868445][T19697] Mirror/redirect action on
| [ 3705.150901][T20206] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [ 3705.151349][T20206] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127]
[ 3705.151783][T20206] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[3705.152074][T20206] RIP: 0010:neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[ 3705.152253][T20206] Code: 0f 85 ef 04 00 00 49 8d 7f 08 49 8b 1f 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 cc 04 00 00 49 8b 6f 08 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 19 05 00 00 48 89 5d 00 48 85 db 74 1a 48 8d
All code
========
   0:	0f 85 ef 04 00 00    	jne    0x4f5
   6:	49 8d 7f 08          	lea    0x8(%r15),%rdi
   a:	49 8b 1f             	mov    (%r15),%rbx
   d:	48 89 f8             	mov    %rdi,%rax
  10:	48 c1 e8 03          	shr    $0x3,%rax
  14:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  19:	0f 85 cc 04 00 00    	jne    0x4eb
  1f:	49 8b 6f 08          	mov    0x8(%r15),%rbp
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
  2a:*	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)		<-- trapping instruction
  2f:	0f 85 19 05 00 00    	jne    0x54e
  35:	48 89 5d 00          	mov    %rbx,0x0(%rbp)
  39:	48 85 db             	test   %rbx,%rbx
  3c:	74 1a                	je     0x58
  3e:	48                   	rex.W
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
   5:	0f 85 19 05 00 00    	jne    0x524
   b:	48 89 5d 00          	mov    %rbx,0x0(%rbp)
   f:	48 85 db             	test   %rbx,%rbx
  12:	74 1a                	je     0x2e
  14:	48                   	rex.W
  15:	8d                   	.byte 0x8d
[ 3705.152711][T20206] RSP: 0018:ffffc90000beef10 EFLAGS: 00010a06
[ 3705.152880][T20206] RAX: 1bd5a00000000024 RBX: 0000000000000000 RCX: 0000000000000000
[ 3705.153075][T20206] RDX: 1ffff1100146539e RSI: ffff88800a329000 RDI: ffff8880052b2808
[ 3705.153275][T20206] RBP: dead000000000122 R08: ffff8880052b2800 R09: fffff5200017dde3
[ 3705.153468][T20206] R10: 0000000000000003 R11: 0000000000000018 R12: ffff8880052b293c
[ 3705.153666][T20206] R13: dffffc0000000000 R14: ffff88800a329000 R15: ffff8880052b2800
[ 3705.153866][T20206] FS:  00007fccd0d4b800(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[ 3705.154098][T20206] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3705.154261][T20206] CR2: 00000000004e3e28 CR3: 000000000a6e0002 CR4: 0000000000772ef0
[ 3705.154461][T20206] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3705.154657][T20206] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3705.154850][T20206] PKRU: 55555554
[ 3705.154951][T20206] Call Trace:
[ 3705.155048][T20206]  <TASK>
[3705.155117][T20206] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[3705.155224][T20206] ? exc_general_protection (arch/x86/kernel/traps.c:751 arch/x86/kernel/traps.c:693) 
[3705.155358][T20206] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) 
[3705.155492][T20206] ? neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[3705.155621][T20206] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[3705.155758][T20206] __neigh_ifdown.isra.0 (net/core/neighbour.c:826 net/core/neighbour.c:426) 
[3705.155887][T20206] ? fib_flush (net/ipv4/fib_frontend.c:195 (discriminator 11)) 
[3705.155986][T20206] neigh_ifdown (net/core/neighbour.c:445) 
[3705.156085][T20206] fib_netdev_event (net/ipv4/fib_frontend.c:1521) 
[3705.156215][T20206] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) 
[3705.156347][T20206] dev_close_many (net/core/dev.c:1590) 
[3705.156478][T20206] ? __pfx_dev_close_many (net/core/dev.c:1577) 
[3705.156608][T20206] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[3705.156742][T20206] unregister_netdevice_many_notify (net/core/dev.c:11503) 
[3705.156903][T20206] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[3705.157032][T20206] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[3705.157163][T20206] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[3705.157293][T20206] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11470) 
[3705.157454][T20206] ? sock_def_readable (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/sock.c:3464) 
[3705.157583][T20206] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[3705.157715][T20206] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[3705.157849][T20206] ? unregister_netdevice_queue (net/core/dev.c:11455) 
[3705.158009][T20206] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[3705.158138][T20206] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11454) 
[3705.158303][T20206] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[3705.158400][T20206] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) 
[3705.158533][T20206] rtnl_dellink (net/core/rtnetlink.c:3329 net/core/rtnetlink.c:3379) 
[3705.158663][T20206] ? 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:228) 
[3705.158796][T20206] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3335) 
[3705.158929][T20206] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[3705.159071][T20206] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[3705.159199][T20206] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[3705.159330][T20206] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[3705.159477][T20206] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6719) 
[3705.159607][T20206] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[3705.159736][T20206] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[3705.159865][T20206] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[3705.159998][T20206] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[3705.160130][T20206] rtnetlink_rcv_msg (net/core/rtnetlink.c:6721) 
[3705.160261][T20206] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[3705.160391][T20206] ? 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:228) 
[3705.160523][T20206] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[3705.160622][T20206] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[3705.160754][T20206] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[3705.160895][T20206] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[3705.161029][T20206] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[3705.161162][T20206] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[3705.161304][T20206] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[3705.161435][T20206] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[3705.161565][T20206] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[3705.161695][T20206] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[3705.161831][T20206] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[3705.161961][T20206] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[3705.162094][T20206] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693) 
[3705.162227][T20206] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[3705.162361][T20206] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[3705.162493][T20206] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[3705.162624][T20206] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[3705.162798][T20206] ___sys_sendmsg (net/socket.c:2663) 
[3705.162928][T20206] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[3705.163059][T20206] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[3705.163201][T20206] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[3705.163331][T20206] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) 
[3705.163493][T20206] ? kasan_save_stack (mm/kasan/common.c:49) 
[3705.163629][T20206] ? kasan_save_stack (mm/kasan/common.c:48) 
[3705.163760][T20206] ? __kasan_record_aux_stack (mm/kasan/generic.c:541) 
[3705.163889][T20206] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3087) 
[3705.164051][T20206] ? __x64_sys_close (fs/open.c:1568 fs/open.c:1550 fs/open.c:1550) 
[3705.164185][T20206] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[3705.164315][T20206] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[3705.164478][T20206] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[3705.164608][T20206] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[3705.164738][T20206] ? __lock_release (kernel/locking/lockdep.c:5501) 
[3705.164868][T20206] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[3705.164969][T20206] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[3705.165100][T20206] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[3705.165229][T20206] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2053 arch/x86/mm/physaddr.c:65) 
[3705.165366][T20206] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[3705.165495][T20206] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3705.165657][T20206] RIP: 0033:0x7fccd0f577b7
[ 3705.165797][T20206] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0a 00                	or     (%rax),%al
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[ 3705.166254][T20206] RSP: 002b:00007ffe7e1fedc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 3705.166452][T20206] RAX: ffffffffffffffda RBX: 00007ffe7e1ff500 RCX: 00007fccd0f577b7
[ 3705.166646][T20206] RDX: 0000000000000000 RSI: 00007ffe7e1fee30 RDI: 0000000000000005
[ 3705.166841][T20206] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[ 3705.167037][T20206] R10: 00007fccd0e154a8 R11: 0000000000000246 R12: 0000000000000002


Finger prints:
neigh_ifdown:fib_netdev_event:notifier_call_chain:dev_close_many:unregister_netdevice_many_notify