Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000005

CPU: 0 PID: 1 Comm: init Not tainted 4.18.0-rc5-next-20180717+ #9
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+0x1c9/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 find_child_reaper kernel/exit.c:578 [inline]
 forget_original_parent.cold.21+0x7b/0xd5 kernel/exit.c:674
 exit_notify kernel/exit.c:710 [inline]
 do_exit+0x1b78/0x2750 kernel/exit.c:889
 do_group_exit+0x177/0x440 kernel/exit.c:972
 get_signal+0x88e/0x1970 kernel/signal.c:2467
 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162
 prepare_exit_to_usermode+0x342/0x3b0 arch/x86/entry/common.c:197
 retint_user+0x8/0x18
RIP: 0033:0x7f35e7caedd9
Code: Bad RIP value.
RSP: 002b:00007ffccd3cf3f8 EFLAGS: 00000302
RAX: ffffffffffffffda RBX: 00007ffccd3cf5a0 RCX: 00007f35e7caedd3
RDX: 0000000000000000 RSI: 00007ffccd3cf750 RDI: 000000000000000b
RBP: 00007ffccd3cf750 R08: 00007ffccd3cf7d0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000346 R12: 00000000ffffffff
R13: 00007ffccd3cfb30 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..