random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
==================================================================
BUG: KASAN: stack-out-of-bounds in __xfrm_dst_hash net/xfrm/xfrm_hash.h:95 [inline]
BUG: KASAN: stack-out-of-bounds in xfrm_dst_hash net/xfrm/xfrm_state.c:60 [inline]
BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x26ce/0x27c0 net/xfrm/xfrm_state.c:806
Read of size 4 at addr ffff8801da3ef650 by task syz-executor407/3814

CPU: 1 PID: 3814 Comm: syz-executor407 Not tainted 4.9.99-g74fa0af4 #27
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801da3eecc8 ffffffff81eb0f09 ffffea000768fbc0 ffff8801da3ef650
 0000000000000000 ffff8801da3ef650 0000000000000003 ffff8801da3eed00
 ffffffff815652eb ffff8801da3ef650 0000000000000004 0000000000000000
Call Trace:
 [<ffffffff81eb0f09>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb0f09>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff815652eb>] print_address_description+0x6c/0x234 mm/kasan/report.c:256
 [<ffffffff815656f5>] kasan_report_error mm/kasan/report.c:355 [inline]
 [<ffffffff815656f5>] kasan_report.cold.6+0x242/0x2fe mm/kasan/report.c:412
 [<ffffffff81539354>] __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
 [<ffffffff835100fe>] __xfrm_dst_hash net/xfrm/xfrm_hash.h:95 [inline]
 [<ffffffff835100fe>] xfrm_dst_hash net/xfrm/xfrm_state.c:60 [inline]
 [<ffffffff835100fe>] xfrm_state_find+0x26ce/0x27c0 net/xfrm/xfrm_state.c:806
 [<ffffffff834f337c>] xfrm_tmpl_resolve_one+0x1dc/0x850 net/xfrm/xfrm_policy.c:1483
 [<ffffffff834f3c09>] xfrm_tmpl_resolve net/xfrm/xfrm_policy.c:1527 [inline]
 [<ffffffff834f3c09>] xfrm_resolve_and_create_bundle+0x219/0x1ff0 net/xfrm/xfrm_policy.c:1875
 [<ffffffff834fa8af>] xfrm_lookup+0x23f/0xb70 net/xfrm/xfrm_policy.c:2229
 [<ffffffff834fc0e9>] xfrm_lookup_route+0x39/0x1b0 net/xfrm/xfrm_policy.c:2351
 [<ffffffff83312880>] ip_route_output_flow+0x90/0xa0 net/ipv4/route.c:2438
 [<ffffffff833f1a4f>] udp_sendmsg+0x140f/0x1bd0 net/ipv4/udp.c:1023
 [<ffffffff835c363d>] udpv6_sendmsg+0x127d/0x2430 net/ipv6/udp.c:1086
 [<ffffffff834250b3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:770
 [<ffffffff83012fcc>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff83012fcc>] sock_sendmsg+0xcc/0x110 net/socket.c:645
 [<ffffffff830147ea>] ___sys_sendmsg+0x47a/0x840 net/socket.c:1969
 [<ffffffff83016d41>] __sys_sendmmsg+0x161/0x3d0 net/socket.c:2059
 [<ffffffff83016fe5>] SYSC_sendmmsg net/socket.c:2090 [inline]
 [<ffffffff83016fe5>] SyS_sendmmsg+0x35/0x60 net/socket.c:2085
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f4653>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

The buggy address belongs to the page:
page:ffffea000768fbc0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x8000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801da3ef500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1
 ffff8801da3ef580: f1 f1 f1 00 f2 f2 f2 f2 f2 f2 f2 00 00 00 00 f2
>ffff8801da3ef600: f2 f2 f2 00 00 00 00 00 00 00 f2 f2 f2 f2 f2 00
                                                 ^
 ffff8801da3ef680: 00 00 00 00 00 00 00 00 f2 f2 f2 00 00 00 00 00
 ffff8801da3ef700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================