random: sshd: uninitialized urandom read (32 bytes read, 128 bits of entropy available)
random: nonblocking pool is initialized
IPVS: Creating netns size=2552 id=1
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3891 at kernel/signal.c:343 task_participate_group_stop+0x219/0x2c0 kernel/signal.c:343()
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3891 Comm: 3 Not tainted 4.4.129-g23eaecc #26
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 7ee75e049805e62a ffff8801c93dfab0 ffffffff81e0dc8d
 ffffffff83a43ec0 ffff8800bafbb000 ffffffff83a49b00 0000000000000009
 0000000000000157 ffff8801c93dfb70 ffffffff81409ed4 0000000041b58ab3
Call Trace:
 [<ffffffff81e0dc8d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e0dc8d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81409ed4>] panic+0x19e/0x38d kernel/panic.c:112
 [<ffffffff8140a0f8>] warn_slowpath_common.cold.6+0x20/0x20 kernel/panic.c:455
 [<ffffffff81130049>] warn_slowpath_null+0x29/0x30 kernel/panic.c:492
 [<ffffffff81155269>] task_participate_group_stop+0x219/0x2c0 kernel/signal.c:343
 [<ffffffff81159b3f>] do_signal_stop+0x36f/0x7c0 kernel/signal.c:2024
 [<ffffffff8115e54e>] get_signal+0x5de/0x14b0 kernel/signal.c:2201
 [<ffffffff8100e02b>] do_signal+0x8b/0x1d30 arch/x86/kernel/signal.c:712
 [<ffffffff8100360a>] exit_to_usermode_loop+0x11a/0x160 arch/x86/entry/common.c:248
 [<ffffffff81007090>] prepare_exit_to_usermode arch/x86/entry/common.c:283 [inline]
 [<ffffffff81007090>] syscall_return_slowpath arch/x86/entry/common.c:348 [inline]
 [<ffffffff81007090>] do_syscall_32_irqs_on arch/x86/entry/common.c:398 [inline]
 [<ffffffff81007090>] do_fast_syscall_32+0x620/0x8b0 arch/x86/entry/common.c:459
 [<ffffffff838c0a2a>] sysenter_flags_fixed+0xd/0x17
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..