CPU: 1 PID: 1 Comm: init Not tainted 4.9.48-g93babeb #44
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801da20f930 ffffffff81d92f89 ffffffff83a489c0 ffff8801da20fa08
 ffff8801da220000 dffffc0000000000 ffff8801da220010 ffff8801da20f9f8
 ffffffff8142e6d1 0000000041b58ab3 ffffffff84184930 ffffffff8142e515
Call Trace:
 [<ffffffff81d92f89>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d92f89>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142e6d1>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff8113eb7f>] find_child_reaper kernel/exit.c:548 [inline]
 [<ffffffff8113eb7f>] forget_original_parent kernel/exit.c:637 [inline]
 [<ffffffff8113eb7f>] exit_notify kernel/exit.c:673 [inline]
 [<ffffffff8113eb7f>] do_exit+0x237f/0x2a50 kernel/exit.c:855
 [<ffffffff81143718>] do_group_exit+0x108/0x320 kernel/exit.c:937
 [<ffffffff811663bc>] get_signal+0x55c/0x1600 kernel/signal.c:2315
 [<ffffffff81052b97>] do_signal+0x87/0x1960 arch/x86/kernel/signal.c:807
 [<ffffffff81003a35>] exit_to_usermode_loop+0xe5/0x130 arch/x86/entry/common.c:156
 [<ffffffff81006350>] prepare_exit_to_usermode arch/x86/entry/common.c:190 [inline]
 [<ffffffff81006350>] syscall_return_slowpath+0x1a0/0x1e0 arch/x86/entry/common.c:259
 [<ffffffff838aae26>] entry_SYSCALL_64_fastpath+0xc4/0xc6
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..