------------[ cut here ]------------
WARNING: CPU: 1 PID: 16255 at net/ipv6/ip6_fib.c:1477 fib6_del+0x947/0xca0 net/ipv6/ip6_fib.c:1477
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 16255 Comm: syz-executor7 Not tainted 4.13.0-rc7+ #56
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 panic+0x1e4/0x417 kernel/panic.c:180
 __warn+0x1c4/0x1d9 kernel/panic.c:541
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:190
 do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:273
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:310
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:323
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:846
RIP: 0010:fib6_del+0x947/0xca0 net/ipv6/ip6_fib.c:1477
RSP: 0018:ffff8801db3074d8 EFLAGS: 00010206
RAX: ffff8801cf9e60c0 RBX: ffff8801cdc0be00 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffff8801db307650 RDI: ffff8801cdc0be64
RBP: ffff8801db3075f0 R08: ffffffff86df14a8 R09: 0000000000000002
R10: ffff8801db3074b8 R11: 1ffff10039f3ce73 R12: dffffc0000000000
R13: ffff8801db307650 R14: ffff8801b5b14040 R15: 1ffff1003b660ea5
 __ip6_del_rt+0xc7/0x120 net/ipv6/route.c:2136
 ip6_del_rt+0x132/0x1a0 net/ipv6/route.c:2149
 ip6_link_failure+0x244/0x380 net/ipv6/route.c:1359
 dst_link_failure include/net/dst.h:454 [inline]
 ndisc_error_report+0xae/0x180 net/ipv6/ndisc.c:682
 neigh_invalidate+0x225/0x530 net/core/neighbour.c:883
 neigh_timer_handler+0x883/0xca0 net/core/neighbour.c:969
 call_timer_fn+0x233/0x830 kernel/time/timer.c:1281
 expire_timers kernel/time/timer.c:1320 [inline]
 __run_timers+0x7fd/0xb90 kernel/time/timer.c:1620
 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646
 __do_softirq+0x2f5/0xba3 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1cc/0x200 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:1044
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:702
RIP: 0010:paravirt_sched_clock arch/x86/include/asm/paravirt.h:179 [inline]
RIP: 0010:sched_clock+0x7/0x40 arch/x86/kernel/tsc.c:227
RSP: 0018:ffff8801cdda6798 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff8801cdda6d28 RCX: 1ffff1003ab83acc
RDX: 0000000000010000 RSI: ffffffff822ddaf8 RDI: ffffffff85ac9be0
RBP: ffff8801cdda68e8 R08: 0000000000000001 R09: 1ffff10039bb4cd5
R10: ffff8801cdda63f0 R11: 0000000000000000 R12: ffff8801d5c1d580
R13: 1ffff10039bb4cfc R14: 00000000fffe993f R15: ffff8801cdda68c0
 </IRQ>
 blk_mq_make_request+0x3fe/0x21c0 block/blk-mq.c:1568
 generic_make_request+0x44c/0xe60 block/blk-core.c:2194
 submit_bio+0x18b/0x520 block/blk-core.c:2269
 submit_bh_wbc+0x45b/0x5d0 fs/buffer.c:3137
 __block_write_full_page+0x404/0x960 fs/buffer.c:1827
 block_write_full_page+0x125/0x230 fs/buffer.c:3013
 blkdev_writepage+0x24/0x30 fs/block_dev.c:578
 __writepage+0x5f/0xc0 mm/page-writeback.c:2318
 write_cache_pages+0x610/0x12e0 mm/page-writeback.c:2256
 generic_writepages+0xe9/0x150 mm/page-writeback.c:2342
 blkdev_writepages+0x1d/0x30 fs/block_dev.c:1943
 do_writepages+0xff/0x170 mm/page-writeback.c:2357
 __filemap_fdatawrite_range+0x32f/0x460 mm/filemap.c:354
 filemap_write_and_wait_range+0x59/0xc0 mm/filemap.c:571
 __generic_file_write_iter+0x456/0x5b0 mm/filemap.c:3083
 blkdev_write_iter+0x1cf/0x390 fs/block_dev.c:1897
 call_write_iter include/linux/fs.h:1743 [inline]
 do_iter_readv_writev+0x525/0x7f0 fs/read_write.c:650
 do_iter_write+0x154/0x540 fs/read_write.c:929
 vfs_iter_write+0x77/0xb0 fs/read_write.c:942
 iter_file_splice_write+0x7e9/0xf50 fs/splice.c:765
 do_splice_from fs/splice.c:867 [inline]
 direct_splice_actor+0x125/0x180 fs/splice.c:1034
 splice_direct_to_actor+0x2c1/0x820 fs/splice.c:989
 do_splice_direct+0x29b/0x3c0 fs/splice.c:1077
 do_sendfile+0x5c9/0xe80 fs/read_write.c:1412
 SYSC_sendfile64 fs/read_write.c:1467 [inline]
 SyS_sendfile64+0xbd/0x160 fs/read_write.c:1459
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x4512e9
RSP: 002b:00007fd91ffaec08 EFLAGS: 00000216 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9
RDX: 00000000200ddff8 RSI: 0000000000000019 RDI: 0000000000000018
RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000100000001 R11: 0000000000000216 R12: 00000000004b9632
R13: 00000000ffffffff R14: 0000000020000000 R15: 0020000000000001
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..