======================================
| [ 1661.513130][T11914] veth2: entered allmulticast mode
| [ 1661.513426][T11914] veth3: entered allmulticast mode
| [ 1685.589482][T12110] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [ 1685.589870][T12110] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127]
[ 1685.590341][T12110] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[1685.590656][T12110] RIP: 0010:neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[ 1685.590843][T12110] 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
[ 1685.591373][T12110] RSP: 0018:ffffc9000194f388 EFLAGS: 00010a06
[ 1685.591542][T12110] RAX: 1bd5a00000000024 RBX: 0000000000000000 RCX: 0000000000000000
[ 1685.591762][T12110] RDX: 1ffff11000c47999 RSI: ffff88800623c000 RDI: ffff888005e51008
[ 1685.591998][T12110] RBP: dead000000000122 R08: ffff888005e51000 R09: fffff52000329e72
[ 1685.592205][T12110] R10: 0000000000000003 R11: ffffc9000194edc1 R12: ffff888005e5113c
[ 1685.592431][T12110] R13: dffffc0000000000 R14: ffff88800623c000 R15: ffff888005e51000
[ 1685.592631][T12110] FS:  00007f1a2f1b1800(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[ 1685.592891][T12110] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1685.593061][T12110] CR2: 00000000004e2a90 CR3: 000000000a360006 CR4: 0000000000772ef0
[ 1685.593283][T12110] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1685.593482][T12110] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1685.593703][T12110] PKRU: 55555554
[ 1685.593808][T12110] Call Trace:
[ 1685.593909][T12110]  <TASK>
[1685.593995][T12110] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[1685.594108][T12110] ? exc_general_protection (arch/x86/kernel/traps.c:751 arch/x86/kernel/traps.c:693) 
[1685.594248][T12110] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) 
[1685.594387][T12110] ? neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[1685.594525][T12110] ? __pfx_do_raw_write_lock (kernel/locking/spinlock_debug.c:209) 
[1685.594658][T12110] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[1685.594796][T12110] __neigh_ifdown.isra.0 (net/core/neighbour.c:826 net/core/neighbour.c:426) 
[1685.594929][T12110] ? blocking_notifier_call_chain (kernel/notifier.c:388 kernel/notifier.c:376) 
[1685.595105][T12110] neigh_ifdown (net/core/neighbour.c:445) 
[1685.595208][T12110] fib_inetaddr_event (net/ipv4/fib_frontend.c:1431 net/ipv4/fib_frontend.c:1455) 
[1685.595344][T12110] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) 
[1685.595531][T12110] blocking_notifier_call_chain (kernel/notifier.c:389 kernel/notifier.c:376) 
[1685.595661][T12110] __inet_del_ifa (net/ipv4/devinet.c:488) 
[1685.595796][T12110] inet_rtm_deladdr (net/ipv4/devinet.c:706) 
[1685.595934][T12110] ? __pfx_inet_rtm_deladdr (net/ipv4/devinet.c:665) 
[1685.596073][T12110] rtnetlink_rcv_msg (net/core/rtnetlink.c:6721) 
[1685.596210][T12110] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[1685.596339][T12110] ? 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) 
[1685.596484][T12110] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[1685.596588][T12110] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[1685.596718][T12110] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[1685.596860][T12110] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[1685.596990][T12110] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[1685.597129][T12110] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[1685.597267][T12110] ? 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) 
[1685.597398][T12110] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[1685.597536][T12110] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[1685.597670][T12110] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[1685.597802][T12110] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[1685.597938][T12110] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[1685.598075][T12110] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693) 
[1685.598211][T12110] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[1685.598349][T12110] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[1685.598481][T12110] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[1685.598617][T12110] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[1685.598789][T12110] ___sys_sendmsg (net/socket.c:2663) 
[1685.598929][T12110] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[1685.599066][T12110] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[1685.599200][T12110] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[1685.599331][T12110] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) 
[1685.599497][T12110] ? kasan_save_stack (mm/kasan/common.c:49) 
[1685.599633][T12110] ? kasan_save_stack (mm/kasan/common.c:48) 
[1685.599763][T12110] ? __kasan_record_aux_stack (mm/kasan/generic.c:541) 
[1685.599902][T12110] ? __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) 
[1685.600072][T12110] ? __x64_sys_close (fs/open.c:1568 fs/open.c:1550 fs/open.c:1550) 
[1685.600208][T12110] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[1685.600339][T12110] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[1685.600505][T12110] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[1685.600638][T12110] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[1685.600771][T12110] ? __lock_release (kernel/locking/lockdep.c:5501) 
[1685.600906][T12110] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[1685.601012][T12110] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[1685.601158][T12110] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[1685.601293][T12110] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2053 arch/x86/mm/physaddr.c:65) 
[1685.601430][T12110] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[1685.601565][T12110] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1685.601728][T12110] RIP: 0033:0x7f1a2f3bd7b7
[ 1685.601870][T12110] 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)
[ 1685.602341][T12110] RSP: 002b:00007fffa8b06a38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 1685.602540][T12110] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1a2f3bd7b7
[ 1685.602743][T12110] RDX: 0000000000000000 RSI: 00007fffa8b06aa0 RDI: 0000000000000005
[ 1685.602942][T12110] RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000078
[ 1685.603148][T12110] R10: 00007f1a2f27bef8 R11: 0000000000000246 R12: 00007fffa8b071f0


Finger prints:
neigh_ifdown:fib_inetaddr_event:notifier_call_chain:blocking_notifier_call_chain:__inet_del_ifa