BUG: memory leak
unreferenced object 0xffff88811b00a800 (size 512):
  comm "kworker/0:2", pid 2514, jiffies 4294943504 (age 33.050s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 80 99 03 86 ff ff ff ff  ................
    c0 69 4d 18 81 88 ff ff a0 8b ff ff 00 00 00 00  .iM.............
  backtrace:
    [<ffffffff814d08d1>] __do_kmalloc_node mm/slab_common.c:954 [inline]
    [<ffffffff814d08d1>] __kmalloc+0x41/0x130 mm/slab_common.c:968
    [<ffffffff8389a41f>] kmalloc include/linux/slab.h:581 [inline]
    [<ffffffff8389a41f>] kzalloc include/linux/slab.h:712 [inline]
    [<ffffffff8389a41f>] neigh_alloc net/core/neighbour.c:457 [inline]
    [<ffffffff8389a41f>] ___neigh_create+0xdf/0xd60 net/core/neighbour.c:642
    [<ffffffff83cd72e6>] ip6_finish_output2+0x776/0x9b0 net/ipv6/ip6_output.c:125
    [<ffffffff83cdcc40>] __ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
    [<ffffffff83cdcc40>] ip6_finish_output+0x270/0x530 net/ipv6/ip6_output.c:206
    [<ffffffff83cdcfa3>] NF_HOOK_COND include/linux/netfilter.h:291 [inline]
    [<ffffffff83cdcfa3>] ip6_output+0xa3/0x1b0 net/ipv6/ip6_output.c:227
    [<ffffffff83d13baa>] dst_output include/net/dst.h:445 [inline]
    [<ffffffff83d13baa>] NF_HOOK include/linux/netfilter.h:302 [inline]
    [<ffffffff83d13baa>] ndisc_send_skb+0x24a/0x430 net/ipv6/ndisc.c:508
    [<ffffffff83d185a9>] ndisc_send_rs+0x79/0x2a0 net/ipv6/ndisc.c:718
    [<ffffffff83cee30e>] addrconf_dad_completed+0x17e/0x590 net/ipv6/addrconf.c:4248
    [<ffffffff83ceeaf5>] addrconf_dad_work+0x3d5/0x8f0 net/ipv6/addrconf.c:4157
    [<ffffffff8127422a>] process_one_work+0x2ba/0x5f0 kernel/workqueue.c:2289
    [<ffffffff81274b49>] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436
    [<ffffffff8127ebc5>] kthread+0x125/0x160 kernel/kthread.c:376
    [<ffffffff8100224f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306