SELinux: failure in selinux_parse_skb(), unable to parse packet
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ffffffff8343632e

CPU: 1 PID: 5921 Comm: syz-executor0 Not tainted 4.4.153-g5e24b4e #26
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 7e795c94272022da ffff8801ba92f500 ffffffff81e162ed
 ffffffff83a44c60 00000000ffffffff ffff8800ad288000 ffff8801ba92f840
 0000000000001200 ffff8801ba92f5c0 ffffffff8140d474 0000000041b58ab3
Call Trace:
 [<ffffffff81e162ed>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e162ed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff8140d474>] panic+0x19e/0x38d kernel/panic.c:112
 [<ffffffff81132bc2>] __stack_chk_fail+0x22/0x30 kernel/panic.c:506
 [<ffffffff8343632e>] ip6_xmit+0x18ae/0x1a00 net/ipv6/ip6_output.c:256
 [<ffffffff834f63c5>] inet6_csk_xmit+0x245/0x490 net/ipv6/inet6_connection_sock.c:176
 [<ffffffff835a5a0c>] l2tp_xmit_core net/l2tp/l2tp_core.c:1084 [inline]
 [<ffffffff835a5a0c>] l2tp_xmit_skb+0xb9c/0xe80 net/l2tp/l2tp_core.c:1179
 [<ffffffff835b1f60>] pppol2tp_sendmsg+0x4e0/0x7d0 net/l2tp/l2tp_ppp.c:355
 [<ffffffff82f2757c>] sock_sendmsg_nosec net/socket.c:638 [inline]
 [<ffffffff82f2757c>] sock_sendmsg+0xcc/0x110 net/socket.c:648
 [<ffffffff82f28d41>] ___sys_sendmsg+0x441/0x880 net/socket.c:1975
 [<ffffffff82f2b3d4>] __sys_sendmmsg+0x1d4/0x2e0 net/socket.c:2053
 [<ffffffff83014e22>] C_SYSC_sendmmsg net/compat.c:728 [inline]
 [<ffffffff83014e22>] compat_SyS_sendmmsg+0x32/0x40 net/compat.c:725
 [<ffffffff81006d94>] do_syscall_32_irqs_on arch/x86/entry/common.c:393 [inline]
 [<ffffffff81006d94>] do_fast_syscall_32+0x324/0x8b0 arch/x86/entry/common.c:460
 [<ffffffff838ce1c3>] sysenter_flags_fixed+0xd/0x1a
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..