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: 8734 Comm: syz-executor0 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:ffffc900015d7a50 EFLAGS: 00010212
RAX: 0000000000010000 RBX: fffffffffffffec8 RCX: ffffffff8224b08f
RDX: 0000000000000216 RSI: ffffc9000341a000 RDI: ffff8801deee8080
RBP: ffffc900015d7a90 R08: 0000000000000001 R09: 0000000000000002
R10: ffffc900015d7a28 R11: 0000000000000002 R12: ffff8802155d7400
R13: ffffc900015d7ac8 R14: ffff8801deee8080 R15: ffffc900015d7ab0
FS:  00007fbf296e7700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff24 CR3: 00000001dce88000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
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
 ip6_sk_dst_lookup_flow+0x162/0x170 net/ipv6/ip6_output.c:1107
 udpv6_sendmsg+0xc87/0x1200 net/ipv6/udp.c:1292
 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:00007fbf296e6c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452a39
RDX: 0000000000000001 RSI: 0000000020122000 RDI: 0000000000000018
RBP: 000000000000055e R08: 0000000020002fe4 R09: 000000000000001c
R10: 000000002000c800 R11: 0000000000000212 R12: 00000000006f6170
R13: 00000000ffffffff R14: 00007fbf296e76d4 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: ffffc900015d7a50
CR2: ffffffffffffff24
---[ end trace d6b4622a7838ee9a ]---