------------[ cut here ]------------
WARNING: CPU: 0 PID: 9917 at net/ipv6/ip6_fib.c:1475 fib6_del+0x7a3/0xa30 net/ipv6/ip6_fib.c:1475
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 9917 Comm: modprobe Not tainted 4.9.51-g47589a5 #53
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db207998 ffffffff81d93069 ffffffff83a46b40 ffff8801db207a70
 ffffffff83f47d00 ffffffff8346cd33 0000000000000009 ffff8801db207a60
 ffffffff8142e771 0000000041b58ab3 ffffffff841850d0 ffffffff8142e5b5
Call Trace:
 <IRQ> [   66.283644]  [<ffffffff81d93069>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [   66.283644]  [<ffffffff81d93069>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142e771>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff81131ed4>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff8113213c>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff8346cd33>] fib6_del+0x7a3/0xa30 net/ipv6/ip6_fib.c:1475
 [<ffffffff8344ce60>] __ip6_del_rt+0x100/0x160 net/ipv6/route.c:2140
 [<ffffffff834600aa>] ip6_del_rt+0xca/0x110 net/ipv6/route.c:2153
 [<ffffffff83461523>] ip6_link_failure+0x243/0x3e0 net/ipv6/route.c:1339
 [<ffffffff83474f9e>] dst_link_failure include/net/dst.h:490 [inline]
 [<ffffffff83474f9e>] ndisc_error_report+0xae/0x190 net/ipv6/ndisc.c:671
 [<ffffffff82f5d275>] neigh_invalidate+0x225/0x530 net/core/neighbour.c:847
 [<ffffffff82f62c67>] neigh_timer_handler+0x597/0xa10 net/core/neighbour.c:933
 [<ffffffff812a5044>] call_timer_fn+0x164/0x700 kernel/time/timer.c:1321
 [<ffffffff812a5f33>] expire_timers kernel/time/timer.c:1361 [inline]
 [<ffffffff812a5f33>] __run_timers kernel/time/timer.c:1660 [inline]
 [<ffffffff812a5f33>] run_timer_softirq+0x693/0x1640 kernel/time/timer.c:1686
 [<ffffffff838af49d>] __do_softirq+0x22d/0x964 kernel/softirq.c:284
 [<ffffffff81147985>] invoke_softirq kernel/softirq.c:364 [inline]
 [<ffffffff81147985>] irq_exit+0x165/0x190 kernel/softirq.c:405
 [<ffffffff838aed3b>] exiting_irq arch/x86/include/asm/apic.h:659 [inline]
 [<ffffffff838aed3b>] smp_apic_timer_interrupt+0x7b/0xa0 arch/x86/kernel/apic/apic.c:960
 [<ffffffff838adddc>] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:709
 <EOI> [   66.515074]  [<ffffffff811ba5de>] ? __might_sleep+0x1e/0x1a0 kernel/sched/core.c:7981
 [<ffffffff815bc282>] dput.part.23+0x42/0x7b0 fs/dcache.c:784
 [<ffffffff815bca0f>] dput+0x1f/0x30 fs/dcache.c:780
 [<ffffffff81591fa8>] path_put fs/namei.c:515 [inline]
 [<ffffffff81591fa8>] terminate_walk+0x278/0x550 fs/namei.c:628
 [<ffffffff8159fe60>] path_openat+0x860/0x2a60 fs/namei.c:3534
 [<ffffffff815a5857>] do_filp_open+0x197/0x290 fs/namei.c:3560
 [<ffffffff8156a282>] do_sys_open+0x352/0x4c0 fs/open.c:1072
 [<ffffffff8156a41d>] SYSC_open fs/open.c:1090 [inline]
 [<ffffffff8156a41d>] SyS_open+0x2d/0x40 fs/open.c:1085
 [<ffffffff838ac605>] entry_SYSCALL_64_fastpath+0x23/0xc6
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..