------------[ cut here ]------------
WARNING: CPU: 1 PID: 8062 at net/ipv6/ip6_fib.c:1490 fib6_del+0x9d7/0xd50 net/ipv6/ip6_fib.c:1490
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 8062 Comm: syz-executor1 Not tainted 4.13.0-rc7+ #64
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+0x9d7/0xd50 net/ipv6/ip6_fib.c:1490
RSP: 0018:ffff8801db307498 EFLAGS: 00010206
RAX: ffff8801c75f6640 RBX: ffff8801cccbfe00 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffff8801ce063cb0 RDI: ffff8801cccbfe64
RBP: ffff8801db3075b0 R08: ffffffff86df1148 R09: 0000000000000002
R10: ffff8801db307478 R11: 1ffff10038ebef23 R12: dffffc0000000000
R13: ffff8801db307610 R14: ffff88019d47e0c0 R15: 1ffff1003b660e9d
 __ip6_del_rt+0xc7/0x120 net/ipv6/route.c:2146
 ip6_del_rt+0x132/0x1a0 net/ipv6/route.c:2159
 ip6_link_failure+0x1a6/0x580 net/ipv6/route.c:1362
 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:814 [inline]
RIP: 0010:lock_acquire+0x256/0x580 kernel/locking/lockdep.c:3858
RSP: 0018:ffff8801c94773e8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff8801c75f6640 RCX: 0000000000000000
RDX: 1ffffffff0b59371 RSI: 000000005ac5cf59 RDI: 0000000000000286
RBP: ffff8801c94774e0 R08: 0000000000000001 R09: 0000000000000002
R10: ffff8801c94773c8 R11: ffffffff816ec4e0 R12: 1ffff1003928ee83
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
 </IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:239 [inline]
 rcu_read_lock include/linux/rcupdate.h:609 [inline]
 __is_insn_slot_addr+0xb4/0x330 kernel/kprobes.c:293
 is_kprobe_insn_slot include/linux/kprobes.h:317 [inline]
 __kernel_text_address+0xa2/0xe0 kernel/extable.c:111
 unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:74
 __save_stack_trace+0x7e/0xd0 arch/x86/kernel/stacktrace.c:45
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489
 kmem_cache_alloc+0x127/0x750 mm/slab.c:3561
 __split_vma+0x1b7/0x8c0 mm/mmap.c:2546
 do_munmap+0x2c1/0xf40 mm/mmap.c:2667
 mmap_region+0x59e/0x15a0 mm/mmap.c:1630
 do_mmap+0x69b/0xd40 mm/mmap.c:1467
 do_mmap_pgoff include/linux/mm.h:2108 [inline]
 vm_mmap_pgoff+0x1de/0x280 mm/util.c:333
 SYSC_mmap_pgoff mm/mmap.c:1517 [inline]
 SyS_mmap_pgoff+0x23b/0x5f0 mm/mmap.c:1475
 SYSC_mmap arch/x86/kernel/sys_x86_64.c:98 [inline]
 SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:89
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x451e59
RSP: 002b:00007fbc0df76c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 0000000000451e59
RDX: 0000000000000003 RSI: 0000000000001000 RDI: 0000000020f59000
RBP: 0000000000000086 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000000032 R11: 0000000000000216 R12: 00000000004b7d9c
R13: 00000000ffffffff R14: 0000000020f58000 R15: 0000000000001000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..