random: sshd: uninitialized urandom read (32 bytes read, 108 bits of entropy available)
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ffffffff8330346e

CPU: 0 PID: 3327 Comm: syzkaller643309 Not tainted 4.4.113-ge70c132 #27
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 0aa2b408d8afe6b7 ffff8800b46275d8 ffffffff81d0278d
 ffffffff838437c0 ffff8800b46276b0 00000000000005b4 ffff8801d5740064
 0000000000000040 ffff8800b46276a0 ffffffff81419b6a 0000000041b58ab3
Call Trace:
 [<ffffffff81d0278d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0278d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81419b6a>] panic+0x1aa/0x388 kernel/panic.c:112
 [<ffffffff8112d4f2>] __stack_chk_fail+0x22/0x30 kernel/panic.c:506
 [<ffffffff8330346e>] ip6_xmit+0x170e/0x1ad0 net/ipv6/ip6_output.c:256
 [<ffffffff833c44d6>] inet6_csk_xmit+0x246/0x480 net/ipv6/inet6_connection_sock.c:176
 [<ffffffff83456b8f>] l2tp_xmit_core net/l2tp/l2tp_core.c:1084 [inline]
 [<ffffffff83456b8f>] l2tp_xmit_skb+0xc2f/0xea0 net/l2tp/l2tp_core.c:1179
 [<ffffffff83463674>] pppol2tp_sendmsg+0x584/0x7f0 net/l2tp/l2tp_ppp.c:355
 [<ffffffff82dea0aa>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82dea0aa>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82debc81>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962
 [<ffffffff82dedcd3>] __sys_sendmsg+0xd3/0x190 net/socket.c:1996
 [<ffffffff82ed7a6a>] C_SYSC_sendmsg net/compat.c:720 [inline]
 [<ffffffff82ed7a6a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:718
 [<ffffffff81006d74>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d74>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff837734ea>] sysenter_flags_fixed+0xd/0x17
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..