BUG: memory leak
unreferenced object 0xffff88812171b1e0 (size 32):
  comm "syz-executor517", pid 7160, jiffies 4294943610 (age 13.480s)
  hex dump (first 32 bytes):
    67 74 70 33 00 74 61 73 6b 2f 37 31 36 30 00 00  gtp3.task/7160..
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000e4eb6ad8>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000e4eb6ad8>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000e4eb6ad8>] slab_alloc mm/slab.c:3320 [inline]
    [<00000000e4eb6ad8>] __do_kmalloc mm/slab.c:3654 [inline]
    [<00000000e4eb6ad8>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3671
    [<00000000feafb596>] kstrdup+0x3a/0x70 mm/util.c:60
    [<000000005b050ed4>] kstrdup_const+0x48/0x60 mm/util.c:82
    [<00000000547406f2>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<00000000b66da9df>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<00000000b06e9b57>] dev_set_name+0x63/0x90 drivers/base/core.c:2265
    [<000000002c7d2912>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1736
    [<0000000014394142>] register_netdevice+0x1ce/0x650 net/core/dev.c:9316
    [<0000000030363b20>] gtp_newlink+0x19a/0x3e0 drivers/net/gtp.c:682
    [<00000000a9d27214>] __rtnl_newlink+0x89a/0xb80 net/core/rtnetlink.c:3305
    [<00000000b5b55f92>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3363
    [<00000000e6acb3eb>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5424
    [<000000004e6b6c98>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<00000000ad5efde5>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5442
    [<000000005e8352a9>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<000000005e8352a9>] netlink_unicast+0x223/0x310 net/netlink/af_netlink.c:1328
    [<000000003ba05eb1>] netlink_sendmsg+0x2c0/0x570 net/netlink/af_netlink.c:1917