random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ffffffff83307d8e CPU: 0 PID: 3323 Comm: syzkaller911762 Not tainted 4.4.112-g5f6325b #28 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 64554547b14cd94c ffff8800b4117658 ffffffff81d0579d ffffffff83843020 ffff8800b4117730 00000000000005b4 ffff8801cc840064 0000000000000040 ffff8800b4117720 ffffffff81419e6a 0000000041b58ab3 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] panic+0x1aa/0x388 kernel/panic.c:112 [] __stack_chk_fail+0x22/0x30 kernel/panic.c:506 [] ip6_xmit+0x170e/0x1ad0 net/ipv6/ip6_output.c:256 [] inet6_csk_xmit+0x246/0x480 net/ipv6/inet6_connection_sock.c:176 [] l2tp_xmit_core net/l2tp/l2tp_core.c:1084 [inline] [] l2tp_xmit_skb+0xc2f/0xea0 net/l2tp/l2tp_core.c:1179 [] pppol2tp_sendmsg+0x584/0x7f0 net/l2tp/l2tp_ppp.c:355 [] sock_sendmsg_nosec net/socket.c:625 [inline] [] sock_sendmsg+0xca/0x110 net/socket.c:635 [] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962 [] __sys_sendmsg+0xd3/0x190 net/socket.c:1996 [] SYSC_sendmsg net/socket.c:2007 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2003 [] entry_SYSCALL_64_fastpath+0x16/0x92 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..