netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'.
general protection fault: 0000 [#1] SMP
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 27882 Comm: syz-executor6 Not tainted 4.15.0-rc3-next-20171214+ #67
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:neigh_flush_dev+0xba/0x330 net/core/neighbour.c:246
RSP: 0018:ffffc90000d77658 EFLAGS: 00010212
RAX: 0000000000010000 RBX: 02fffc0000000000 RCX: ffffffff820e532a
RDX: 000000000000365f RSI: ffffc900042a9000 RDI: 0000000000000286
RBP: ffffc90000d776a0 R08: 0000000000000001 R09: 0000000000000004
R10: ffffc90000d77620 R11: 0000000000000004 R12: ffffea0008540b80
R13: ffff8801fa50d000 R14: ffff8801fa50d000 R15: ffffffff831705f0
FS:  00007fb04da20700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000920008 CR3: 00000001fa208005 CR4: 00000000001626e0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 neigh_changeaddr+0x2f/0x40 net/core/neighbour.c:285
 arp_netdev_event+0x38/0x90 net/ipv4/arp.c:1246
 notifier_call_chain+0x41/0xc0 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x32/0x60 net/core/dev.c:1679
 call_netdevice_notifiers net/core/dev.c:1697 [inline]
 dev_set_mac_address+0x87/0xd0 net/core/dev.c:7013
 do_setlink+0x21a/0x1570 net/core/rtnetlink.c:2211
 rtnl_setlink+0x12f/0x190 net/core/rtnetlink.c:2527
 rtnetlink_rcv_msg+0x333/0x5d0 net/core/rtnetlink.c:4522
 netlink_rcv_skb+0x92/0x160 net/netlink/af_netlink.c:2441
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4540
 netlink_unicast_kernel net/netlink/af_netlink.c:1308 [inline]
 netlink_unicast+0x1d4/0x290 net/netlink/af_netlink.c:1334
 netlink_sendmsg+0x345/0x470 net/netlink/af_netlink.c:1897
 sock_sendmsg_nosec net/socket.c:636 [inline]
 sock_sendmsg+0x51/0x70 net/socket.c:646
 sock_write_iter+0xa4/0x100 net/socket.c:915
 call_write_iter include/linux/fs.h:1776 [inline]
 do_iter_readv_writev+0x17d/0x1f0 fs/read_write.c:653
 do_iter_write+0xbc/0x210 fs/read_write.c:932
 vfs_writev+0xa1/0x120 fs/read_write.c:977
 do_writev+0x5e/0x100 fs/read_write.c:1012
 SYSC_writev fs/read_write.c:1085 [inline]
 SyS_writev+0x27/0x30 fs/read_write.c:1082
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a09
RSP: 002b:00007fb04da1fc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452a09
RDX: 0000000000000001 RSI: 0000000020fd3ff0 RDI: 0000000000000014
RBP: 0000000000000473 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f3b68
R13: 00000000ffffffff R14: 00007fb04da206d4 R15: 0000000000000002
Code: ef 0c 01 00 74 56 e8 36 50 1d ff 49 8b 1c 24 48 85 db 0f 84 98 00 00 00 e8 24 50 1d ff 4d 85 f6 0f 84 c0 00 00 00 e8 16 50 1d ff <4c> 39 b3 80 02 00 00 0f 84 ae 00 00 00 e8 04 50 1d ff e8 ff 4f 
RIP: neigh_flush_dev+0xba/0x330 net/core/neighbour.c:246 RSP: ffffc90000d77658
---[ end trace 3b4160810a2b11ea ]---