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BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x30fc/0x3230 net/xfrm/xfrm_state.c:1051
Read of size 4 at addr ffff8801c01dfaf8 by task syz-executor7/24226

CPU: 1 PID: 24226 Comm: syz-executor7 Not tainted 4.14.0+ #128
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=4 sclass=netlink_route_socket pig=24233 comm=syz-executor1
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 print_address_description+0x73/0x250 mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report+0x25b/0x340 mm/kasan/report.c:409
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:429
 xfrm_state_find+0x30fc/0x3230 net/xfrm/xfrm_state.c:1051
 xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:1388 [inline]
 xfrm_tmpl_resolve+0x2fb/0xbd0 net/xfrm/xfrm_policy.c:1432
 xfrm_resolve_and_create_bundle+0x11b/0x2600 net/xfrm/xfrm_policy.c:1821
 xfrm_lookup+0x1574/0x23f0 net/xfrm/xfrm_policy.c:2146
 xfrm_lookup_route+0x39/0x1a0 net/xfrm/xfrm_policy.c:2264
 ip_route_output_flow+0x7c/0xa0 net/ipv4/route.c:2559
 raw_sendmsg+0xc4f/0x3920 net/ipv4/raw.c:633
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
 sock_sendmsg_nosec net/socket.c:632 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:642
 SYSC_sendto+0x358/0x5a0 net/socket.c:1749
 SyS_sendto+0x40/0x50 net/socket.c:1717
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452879
RSP: 002b:00007ff195138be8 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879
RDX: 0000000000000000 RSI: 0000000020098000 RDI: 0000000000000014
RBP: 0000000000000086 R08: 0000000020c24000 R09: 0000000000000010
R10: fffffffffffffffe R11: 0000000000000212 R12: 00000000006ef4b8
R13: 00000000ffffffff R14: 00007ff1951396d4 R15: 0000000000000000

The buggy address belongs to the page:
page:ffffea00070077c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x2fffc0000000000()
raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: 0000000000000000 dead000000000200 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801c01df980: f2 f2 f2 f2 00 f2 f2 f2 f2 f2 f2 f2 00 00 00 f2
 ffff8801c01dfa00: f2 f2 f2 f2 00 00 00 00 f2 f2 f2 f2 00 00 00 00
>ffff8801c01dfa80: 00 00 f2 f2 f2 f2 f2 f2 00 00 00 00 00 00 00 f2
                                                                ^
 ffff8801c01dfb00: f2 f2 f2 f2 00 00 00 00 00 00 00 00 00 f2 f2 f2
 ffff8801c01dfb80: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 f1 f1
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