SELinux: failure in selinux_parse_skb(), unable to parse packet Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ffffffff8343602e CPU: 1 PID: 5954 Comm: syz-executor2 Not tainted 4.4.152-ge5c5f1f #89 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 bf51338741c9606d ffff8801d205f580 ffffffff81e15fed ffffffff83a44c60 00000000ffffffff ffff8801d0848640 ffff8801d205f8c0 0000000000001000 ffff8801d205f640 ffffffff8140d424 0000000041b58ab3 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] panic+0x19e/0x38d kernel/panic.c:112 TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [] __stack_chk_fail+0x22/0x30 kernel/panic.c:506 [] ip6_xmit+0x18ae/0x1a00 net/ipv6/ip6_output.c:256 [] inet6_csk_xmit+0x245/0x490 net/ipv6/inet6_connection_sock.c:176 [] l2tp_xmit_core net/l2tp/l2tp_core.c:1084 [inline] [] l2tp_xmit_skb+0xb9c/0xe80 net/l2tp/l2tp_core.c:1179 [] pppol2tp_sendmsg+0x4e0/0x7d0 net/l2tp/l2tp_ppp.c:355 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xcc/0x110 net/socket.c:648 [] ___sys_sendmsg+0x441/0x880 net/socket.c:1975 [] __sys_sendmmsg+0x12e/0x2e0 net/socket.c:2060 [] SYSC_sendmmsg net/socket.c:2090 [inline] [] SyS_sendmmsg+0x35/0x60 net/socket.c:2085 [] entry_SYSCALL_64_fastpath+0x22/0x9e Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..