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:61 [inline] BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x30f4/0x3520 net/xfrm/xfrm_state.c:953 Read of size 4 at addr ffff8801ad72f370 by task syz-executor484/4510 CPU: 0 PID: 4510 Comm: syz-executor484 Not tainted 4.17.0-rc4+ #44 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:61 [inline] xfrm_state_find+0x30f4/0x3520 net/xfrm/xfrm_state.c:953 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+0x2014/0x36e0 net/ipv4/udp.c:1071 udpv6_sendmsg+0x173b/0x32a0 net/ipv6/udp.c:1196 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: 0033:0x43ffe9 RSP: 002b:00007fffebd922c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ffe9 RDX: 0000000000000001 RSI: 0000000020002000 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401910 R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the page: page:ffffea0006b5cbc0 count:0 mapcount:0 mapping:0000000000000000 index:0x0 flags: 0x2fffc0000000000() raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff raw: 0000000000000000 ffffea0006b50101 0000000000000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801ad72f200: f2 f2 f2 00 f2 f2 f2 f2 f2 f2 f2 f8 f2 f2 f2 f2 ffff8801ad72f280: f2 f2 f2 00 00 00 00 f2 f2 f2 f2 00 00 00 00 00 >ffff8801ad72f300: f2 f2 f2 f2 f2 f2 f2 00 00 00 00 00 00 00 f2 f2 ^ ffff8801ad72f380: f2 f2 f2 00 00 00 00 00 00 00 00 00 f2 f2 f2 00 ffff8801ad72f400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================