random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available)
random: nonblocking pool is initialized
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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:46 [inline]
BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x2469/0x2510 net/xfrm/xfrm_state.c:783
Read of size 4 at addr ffff8800b0927660 by task syz-executor428/3746

CPU: 0 PID: 3746 Comm: syz-executor428 Not tainted 4.4.131-gaa3863d #41
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 140daa782f011231 ffff8800b0926ce0 ffffffff81e0df8d
 ffffea0002c249c0 ffff8800b0927660 0000000000000000 ffff8800b0927660
 0000000000000003 ffff8800b0926d18 ffffffff8151520c ffff8800b0927660
Call Trace:
 [<ffffffff81e0df8d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e0df8d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff8151520c>] print_address_description+0x6c/0x216 mm/kasan/report.c:252
 [<ffffffff8151552b>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff8151552b>] kasan_report.cold.7+0x175/0x2f7 mm/kasan/report.c:408
 [<ffffffff814f9004>] __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:428
 [<ffffffff833e5289>] __xfrm_dst_hash net/xfrm/xfrm_hash.h:95 [inline]
 [<ffffffff833e5289>] xfrm_dst_hash net/xfrm/xfrm_state.c:46 [inline]
 [<ffffffff833e5289>] xfrm_state_find+0x2469/0x2510 net/xfrm/xfrm_state.c:783
 [<ffffffff833c7c1c>] xfrm_tmpl_resolve_one+0x1dc/0x850 net/xfrm/xfrm_policy.c:1450
 [<ffffffff833c84a9>] xfrm_tmpl_resolve net/xfrm/xfrm_policy.c:1494 [inline]
 [<ffffffff833c84a9>] xfrm_resolve_and_create_bundle+0x219/0x1ff0 net/xfrm/xfrm_policy.c:1842
 [<ffffffff833d041f>] xfrm_lookup+0x23f/0xb70 net/xfrm/xfrm_policy.c:2196
 [<ffffffff833d1c69>] xfrm_lookup_route+0x39/0x1b0 net/xfrm/xfrm_policy.c:2318
 [<ffffffff831f39f0>] ip_route_output_flow+0x90/0xa0 net/ipv4/route.c:2427
 [<ffffffff832ceec7>] udp_sendmsg+0x1497/0x1bb0 net/ipv4/udp.c:1038
 [<ffffffff834940bd>] udpv6_sendmsg+0x12cd/0x24c0 net/ipv6/udp.c:1173
 [<ffffffff832fec53>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff82f1cd3c>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1cd3c>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1e501>] ___sys_sendmsg+0x441/0x880 net/socket.c:1962
 [<ffffffff82f20ade>] __sys_sendmmsg+0x12e/0x2e0 net/socket.c:2047
 [<ffffffff82f20cc5>] SYSC_sendmmsg net/socket.c:2077 [inline]
 [<ffffffff82f20cc5>] SyS_sendmmsg+0x35/0x60 net/socket.c:2072
 [<ffffffff838bfe65>] entry_SYSCALL_64_fastpath+0x22/0x9e

The buggy address belongs to the page:
page:ffffea0002c249c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x4000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8800b0927500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8800b0927580: 00 f1 f1 f1 f1 00 f2 f2 f2 f2 f2 f2 f2 00 00 00
>ffff8800b0927600: f2 f2 f2 f2 f2 00 00 00 00 00 00 00 f2 f2 f2 f2
                                                       ^
 ffff8800b0927680: f2 00 00 00 00 00 00 00 00 00 f2 f2 f2 00 00 00
 ffff8800b0927700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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