BUG: unable to handle kernel paging request at ffffffffffffff24
IP: __ipv6_dev_get_saddr+0x6f/0x190 net/ipv6/addrconf.c:1616
PGD 3021067 P4D 3021067 PUD 3023067 PMD 0 
Oops: 0000 [#1] SMP
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 30146 Comm: syz-executor7 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:__ipv6_dev_get_saddr+0x6f/0x190 net/ipv6/addrconf.c:1616
RSP: 0018:ffffc90000e9fa48 EFLAGS: 00010216
RAX: 0000000000010000 RBX: fffffffffffffec8 RCX: ffffffff8224b08f
RDX: 00000000000001ab RSI: ffffc90001a9d000 RDI: ffff8801df93c040
RBP: ffffc90000e9fa88 R08: 0000000000000000 R09: 0000000000000002
R10: ffffc90000e9fa20 R11: 0000000000000002 R12: ffff88020e0bdc00
R13: ffffc90000e9fae0 R14: ffff8801df93c040 R15: ffffc90000e9faa8
FS:  00007f207313d700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff24 CR3: 00000001ddb25000 CR4: 00000000001406e0
Call Trace:
 ipv6_dev_get_saddr+0x255/0x3d0 net/ipv6/addrconf.c:1771
 ip6_route_get_saddr include/net/ip6_route.h:116 [inline]
 ip6_dst_lookup_tail+0x11a/0x330 net/ipv6/ip6_output.c:955
 ip6_dst_lookup_flow+0x3b/0xa0 net/ipv6/ip6_output.c:1076
 rawv6_sendmsg+0x436/0x13c0 net/ipv6/raw.c:908
 inet_sendmsg+0x54/0x250 net/ipv4/af_inet.c:763
 sock_sendmsg_nosec net/socket.c:636 [inline]
 sock_sendmsg+0x51/0x70 net/socket.c:646
 SYSC_sendto+0x17f/0x1d0 net/socket.c:1727
 SyS_sendto+0x40/0x50 net/socket.c:1695
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452a39
RSP: 002b:00007f207313cc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000000028 RSI: 0000000020160fcd RDI: 0000000000000013
RBP: 000000000000054f R08: 000000002096afe8 R09: 0000000000000018
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6008
R13: 00000000ffffffff R14: 00007f207313d6d4 R15: 0000000000000000
Code: 63 ed 48 89 45 c8 49 8b 44 24 08 49 c1 e5 05 49 01 dd 48 8d 98 c8 fe ff ff 48 39 c6 49 89 5d 08 0f 84 c1 00 00 00 e8 b1 f2 06 ff <8b> 43 5c 83 e0 44 83 f8 40 0f 84 83 00 00 00 e8 9d f2 06 ff 48 
RIP: __ipv6_dev_get_saddr+0x6f/0x190 net/ipv6/addrconf.c:1616 RSP: ffffc90000e9fa48
CR2: ffffffffffffff24
---[ end trace c9e404775681f3a5 ]---