BUG: memory leak
unreferenced object 0xffff888115ab8380 (size 64):
  comm "syz-executor106", pid 6690, jiffies 4294941665 (age 13.120s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 08 00 00 00 01 02 0b 00  ................
  backtrace:
    [<00000000817a0460>] kmalloc include/linux/slab.h:559 [inline]
    [<00000000817a0460>] garp_attr_create net/802/garp.c:187 [inline]
    [<00000000817a0460>] garp_request_join+0x119/0x200 net/802/garp.c:350
    [<000000005c0b1da9>] vlan_gvrp_request_join+0x85/0x90 net/8021q/vlan_gvrp.c:34
    [<000000001b4c1f23>] vlan_dev_open+0x14e/0x260 net/8021q/vlan_dev.c:289
    [<00000000663f5d64>] __dev_open+0x12e/0x1f0 net/core/dev.c:1521
    [<000000006aa12213>] __dev_change_flags+0x25a/0x2e0 net/core/dev.c:8284
    [<00000000accb94f7>] rtnl_configure_link+0x51/0x100 net/core/rtnetlink.c:3123
    [<00000000d8075028>] __rtnl_newlink+0x90d/0xbc0 net/core/rtnetlink.c:3460
    [<00000000f717df8c>] rtnl_newlink+0x49/0x70 net/core/rtnetlink.c:3500
    [<0000000053d2724b>] rtnetlink_rcv_msg+0x17e/0x460 net/core/rtnetlink.c:5563
    [<00000000195d5e8c>] netlink_rcv_skb+0x5b/0x180 net/netlink/af_netlink.c:2470
    [<00000000570c9130>] netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
    [<00000000570c9130>] netlink_unicast+0x2b6/0x3c0 net/netlink/af_netlink.c:1330
    [<0000000059e717da>] netlink_sendmsg+0x2ba/0x570 net/netlink/af_netlink.c:1919
    [<0000000005632115>] sock_sendmsg_nosec net/socket.c:651 [inline]
    [<0000000005632115>] sock_sendmsg+0x4c/0x60 net/socket.c:671
    [<00000000d9153d07>] ____sys_sendmsg+0x2c4/0x2f0 net/socket.c:2353
    [<00000000e708f909>] ___sys_sendmsg+0x81/0xc0 net/socket.c:2407
    [<00000000ca212b7b>] __sys_sendmsg+0x77/0xe0 net/socket.c:2440