BUG: memory leak
unreferenced object 0xffff88811acfda80 (size 32):
  comm "syz-executor114", pid 6901, jiffies 4294943885 (age 8.260s)
  hex dump (first 32 bytes):
    62 72 69 64 67 65 30 00 6b 2f 36 39 30 31 00 00  bridge0.k/6901..
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000d6e6b73c>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000d6e6b73c>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000d6e6b73c>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000d6e6b73c>] __do_kmalloc mm/slab.c:3653 [inline]
    [<00000000d6e6b73c>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3670
    [<0000000091ec6972>] kstrdup+0x3a/0x70 mm/util.c:60
    [<000000008ccf69c1>] kstrdup_const+0x48/0x60 mm/util.c:82
    [<00000000a4119b8f>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<00000000693d7a7a>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<00000000fae0fabf>] dev_set_name+0x63/0x90 drivers/base/core.c:2006
    [<00000000e521cf05>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1727
    [<000000006ba4a9fb>] register_netdevice+0x397/0x610 net/core/dev.c:9086
    [<000000006b928b87>] br_dev_newlink+0x26/0xb0 net/bridge/br_netlink.c:1315
    [<00000000cfff7b30>] __rtnl_newlink+0x892/0xb30 net/core/rtnetlink.c:3197
    [<000000004f6d4ba5>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3255
    [<00000000e3234d4b>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5224
    [<00000000cc22c913>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<000000002efc0ee3>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5242
    [<0000000097839e4b>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<0000000097839e4b>] netlink_unicast+0x1ec/0x2d0 net/netlink/af_netlink.c:1328
    [<000000008ceafd49>] netlink_sendmsg+0x270/0x480 net/netlink/af_netlink.c:1917