random: sshd: uninitialized urandom read (32 bytes read, 93 bits of entropy available)
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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 ffff8801d07df800 by task syzkaller381945/3316

CPU: 0 PID: 3316 Comm: syzkaller381945 Not tainted 4.4.107-g610c835 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 26ac232455233fa8 ffff8801d07dee58 ffffffff81d0457d
 ffffea000741f7c0 ffff8801d07df800 0000000000000000 ffff8801d07df800
 ffff8801d11cf130 ffff8801d07dee90 ffffffff814fbb23 ffff8801d07df800
Call Trace:
 [<ffffffff81d0457d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0457d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fbb23>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fc035>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fc035>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814fc174>] __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:428
 [<ffffffff832bf1c1>] xfrm_state_find+0x1291/0x2550 net/xfrm/xfrm_state.c:799
 [<ffffffff832a5588>] xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:1444 [inline]
 [<ffffffff832a5588>] xfrm_tmpl_resolve+0x298/0xab0 net/xfrm/xfrm_policy.c:1488
 [<ffffffff832a5e77>] xfrm_resolve_and_create_bundle+0xd7/0x1da0 net/xfrm/xfrm_policy.c:1836
 [<ffffffff832ac001>] xfrm_lookup+0x991/0xc10 net/xfrm/xfrm_policy.c:2190
 [<ffffffff832ad189>] xfrm_lookup_route+0x39/0x1a0 net/xfrm/xfrm_policy.c:2312
 [<ffffffff830cd90f>] ip_route_output_flow+0x7f/0xa0 net/ipv4/route.c:2424
 [<ffffffff831a29f9>] udp_sendmsg+0x1009/0x1c30 net/ipv4/udp.c:1038
 [<ffffffff8337066d>] udpv6_sendmsg+0x56d/0x2500 net/ipv6/udp.c:1173
 [<ffffffff831d744c>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82dec59a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82dec59a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82ded4e8>] SYSC_sendto+0x2c8/0x340 net/socket.c:1665
 [<ffffffff82def9e0>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff81006d84>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17

The buggy address belongs to the page:
page:ffffea000741f7c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x8000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d07df700: 00 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2 f2 f2 f2
 ffff8801d07df780: f2 00 00 00 f2 f2 f2 f2 f2 00 00 00 00 00 00 00
>ffff8801d07df800: f2 f2 f2 f2 f2 00 00 00 00 00 00 00 00 00 f2 f2
                   ^
 ffff8801d07df880: f2 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801d07df900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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