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:96 [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+0x30f4/0x3520 net/xfrm/xfrm_state.c:952
Read of size 4 at addr ffff8801ad257430 by task syz-executor551/4507

CPU: 0 PID: 4507 Comm: syz-executor551 Not tainted 4.17.0-rc5+ #51
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
 __xfrm_dst_hash net/xfrm/xfrm_hash.h:96 [inline]
 xfrm_dst_hash net/xfrm/xfrm_state.c:60 [inline]
 xfrm_state_find+0x30f4/0x3520 net/xfrm/xfrm_state.c:952
 xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:1393 [inline]
 xfrm_tmpl_resolve+0x380/0xe10 net/xfrm/xfrm_policy.c:1437
 xfrm_resolve_and_create_bundle+0x184/0x2bc0 net/xfrm/xfrm_policy.c:1833
 xfrm_lookup+0x3b1/0x2860 net/xfrm/xfrm_policy.c:2163
 xfrm_lookup_route+0x39/0x1f0 net/xfrm/xfrm_policy.c:2283
 ip_route_output_flow+0xb1/0xc0 net/ipv4/route.c:2563
 udp_sendmsg+0x1f48/0x35e0 net/ipv4/udp.c:1008
 udpv6_sendmsg+0x168e/0x30f0 net/ipv6/udp.c:1175
 inet_sendmsg+0x19f/0x690 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:639
 ___sys_sendmsg+0x525/0x940 net/socket.c:2117
 __sys_sendmmsg+0x240/0x6f0 net/socket.c:2212
 __do_sys_sendmmsg net/socket.c:2241 [inline]
 __se_sys_sendmmsg net/socket.c:2238 [inline]
 __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2238
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440279
RSP: 002b:00007ffd3e546e08 EFLAGS: 00000217 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007ffd3e546e20 RCX: 0000000000440279
RDX: 0000000000000001 RSI: 0000000020002000 RDI: 0000000000000003
RBP: 00000000006cb018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401b40
R13: 0000000000401bd0 R14: 0000000000000000 R15: 0000000000000000

The buggy address belongs to the page:
page:ffffea0006b495c0 count:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x2fffc0000000000()
raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: 0000000000000000 ffffea0006b40101 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801ad257300: f2 f2 f2 f2 f2 f2 f2 00 f2 f2 f2 f2 f2 f2 f2 f8
 ffff8801ad257380: f2 f2 f2 f2 f2 f2 f2 00 00 00 00 f2 f2 f2 f2 00
>ffff8801ad257400: 00 00 00 00 00 00 f2 f2 f2 f2 f2 00 00 00 00 00
                                     ^
 ffff8801ad257480: 00 00 00 00 f2 f2 f2 00 00 00 00 00 00 00 00 00
 ffff8801ad257500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================