random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 122 bits of entropy available)
random: nonblocking pool is initialized
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BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x1291/0x2550 net/xfrm/xfrm_state.c:799
Read of size 4 at addr ffff8801c8d57740 by task syzkaller524275/3754

CPU: 1 PID: 3754 Comm: syzkaller524275 Not tainted 4.4.125-g38f41ec #63
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 148fc05ae6051807 ffff8801c8d56d98 ffffffff81d067bd
 ffffea00072355c0 ffff8801c8d57740 0000000000000000 ffff8801c8d57740
 ffff8801c8fb02b0 ffff8801c8d56dd0 ffffffff814fea83 ffff8801c8d57740
Call Trace:
 [<ffffffff81d067bd>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d067bd>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fea83>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fef95>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fef95>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814ff0d4>] __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:428
 [<ffffffff832c5981>] xfrm_state_find+0x1291/0x2550 net/xfrm/xfrm_state.c:799
 [<ffffffff832abcf8>] xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:1450 [inline]
 [<ffffffff832abcf8>] xfrm_tmpl_resolve+0x298/0xab0 net/xfrm/xfrm_policy.c:1494
 [<ffffffff832ac5e7>] xfrm_resolve_and_create_bundle+0xd7/0x1da0 net/xfrm/xfrm_policy.c:1842
 [<ffffffff832b27c1>] xfrm_lookup+0x991/0xc10 net/xfrm/xfrm_policy.c:2196
 [<ffffffff832b3949>] xfrm_lookup_route+0x39/0x1a0 net/xfrm/xfrm_policy.c:2318
 [<ffffffff830d3f8f>] ip_route_output_flow+0x7f/0xa0 net/ipv4/route.c:2427
 [<ffffffff831a92b9>] udp_sendmsg+0x1009/0x1c30 net/ipv4/udp.c:1038
 [<ffffffff83376e1d>] udpv6_sendmsg+0x56d/0x2500 net/ipv6/udp.c:1173
 [<ffffffff831dde2c>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82df168a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82df168a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82df3261>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962
 [<ffffffff82df52b3>] __sys_sendmsg+0xd3/0x190 net/socket.c:1996
 [<ffffffff82df539d>] SYSC_sendmsg net/socket.c:2007 [inline]
 [<ffffffff82df539d>] SyS_sendmsg+0x2d/0x50 net/socket.c:2003
 [<ffffffff83779965>] entry_SYSCALL_64_fastpath+0x22/0x9e

The buggy address belongs to the page:
page:ffffea00072355c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x8000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801c8d57600: 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1
 ffff8801c8d57680: f1 00 f2 f2 f2 f2 f2 f2 f2 00 00 00 f2 f2 f2 f2
>ffff8801c8d57700: f2 00 00 00 00 00 00 00 f2 f2 f2 f2 f2 00 00 00
                                           ^
 ffff8801c8d57780: 00 00 00 00 00 00 f2 f2 f2 00 00 00 00 00 00 00
 ffff8801c8d57800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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