random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
ODEBUG: object ffff8801db307ce8 is NOT on stack ffff8801d9a80000, but annotated
------------[ cut here ]------------
WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:303 debug_object_is_on_stack lib/debugobjects.c:303 [inline]
WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:303 __debug_object_init.cold.10+0x6b/0x2b0 lib/debugobjects.c:329
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.9.117-g8b21e85 #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db307a18 ffffffff81eb4be9 ffffffff83c48980 00000000ffffffff
 0000000000000000 0000000000000001 000000000000012f ffff8801db307ad8
 ffffffff81421c85 0000000041b58ab3 ffffffff843bc020 ffffffff81421ac6
Call Trace:
 <IRQ> [   25.881909]  [<ffffffff81eb4be9>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [   25.881909]  [<ffffffff81eb4be9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81421c85>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff81421f71>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff8113683c>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff81f6a6e7>] debug_object_is_on_stack lib/debugobjects.c:303 [inline]
 [<ffffffff81f6a6e7>] __debug_object_init.cold.10+0x6b/0x2b0 lib/debugobjects.c:329
 [<ffffffff81f1e629>] debug_object_init_on_stack+0x19/0x20 lib/debugobjects.c:381
 [<ffffffff8127bdca>] init_rcu_head_on_stack kernel/rcu/update.c:403 [inline]
 [<ffffffff8127bdca>] __wait_rcu_gp+0x8a/0x1b0 kernel/rcu/update.c:358
 [<ffffffff8128410a>] synchronize_rcu.part.62+0xfa/0x110 kernel/rcu/tree_plugin.h:684
 [<ffffffff81284147>] synchronize_rcu+0x27/0x90 kernel/rcu/tree_plugin.h:685
 [<ffffffff836bfd8a>] __l2tp_session_unhash+0x38a/0x520 net/l2tp/l2tp_core.c:1796
 [<ffffffff836c0117>] l2tp_tunnel_closeall+0x1f7/0x350 net/l2tp/l2tp_core.c:1364
 [<ffffffff836c09d2>] l2tp_tunnel_destruct+0x2f2/0x590 net/l2tp/l2tp_core.c:1324
 [<ffffffff83023095>] __sk_destruct+0x55/0x590 net/core/sock.c:1428
 [<ffffffff8128780e>] __rcu_reclaim kernel/rcu/rcu.h:118 [inline]
 [<ffffffff8128780e>] rcu_do_batch kernel/rcu/tree.c:2789 [inline]
 [<ffffffff8128780e>] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline]
 [<ffffffff8128780e>] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline]
 [<ffffffff8128780e>] rcu_process_callbacks+0x8ae/0x12b0 kernel/rcu/tree.c:3037
 [<ffffffff83a037fb>] __do_softirq+0x20b/0x937 kernel/softirq.c:284
 [<ffffffff8114b277>] invoke_softirq kernel/softirq.c:364 [inline]
 [<ffffffff8114b277>] irq_exit+0x147/0x190 kernel/softirq.c:405
 [<ffffffff83a023e1>] exiting_irq arch/x86/include/asm/apic.h:659 [inline]
 [<ffffffff83a023e1>] smp_apic_timer_interrupt+0x81/0xa0 arch/x86/kernel/apic/apic.c:960
 [<ffffffff839fe570>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:648
 <EOI> [   26.098770]  [<ffffffff839fb816>] ? native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:53
 [<ffffffff839fae55>] arch_safe_halt arch/x86/include/asm/paravirt.h:104 [inline]
 [<ffffffff839fae55>] default_idle+0x55/0x360 arch/x86/kernel/process.c:437
 [<ffffffff8106ae20>] arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:428
 [<ffffffff839fbc75>] default_idle_call+0x45/0x60 kernel/sched/idle.c:97
 [<ffffffff81223215>] cpuidle_idle_call kernel/sched/idle.c:155 [inline]
 [<ffffffff81223215>] cpu_idle_loop kernel/sched/idle.c:248 [inline]
 [<ffffffff81223215>] cpu_startup_entry+0x2b5/0x380 kernel/sched/idle.c:303
 [<ffffffff810aefa8>] start_secondary+0x328/0x400 arch/x86/kernel/smpboot.c:257
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..