BUG: memory leak
unreferenced object 0xffff8881090de4e0 (size 32):
  comm "syz-executor420", pid 7032, jiffies 4294941647 (age 8.260s)
  hex dump (first 32 bytes):
    62 72 69 64 67 65 30 00 6b 2f 37 30 33 32 00 00  bridge0.k/7032..
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000724ce3c8>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000724ce3c8>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000724ce3c8>] slab_alloc mm/slab.c:3320 [inline]
    [<00000000724ce3c8>] __do_kmalloc mm/slab.c:3654 [inline]
    [<00000000724ce3c8>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3671
    [<00000000949fcc46>] kstrdup+0x3a/0x70 mm/util.c:60
    [<000000003af95846>] kstrdup_const+0x48/0x60 mm/util.c:82
    [<00000000eb0ebe7c>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<000000008f403298>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<00000000d18e6773>] dev_set_name+0x63/0x90 drivers/base/core.c:2265
    [<00000000a5617826>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1733
    [<0000000058ead5cf>] register_netdevice+0x1ce/0x650 net/core/dev.c:9316
    [<0000000086b5d9eb>] br_dev_newlink+0x26/0xb0 net/bridge/br_netlink.c:1315
    [<00000000d7af1204>] __rtnl_newlink+0x89a/0xb80 net/core/rtnetlink.c:3305
    [<000000003e007aab>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3363
    [<0000000083fc8d82>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5424
    [<00000000ed89debb>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<00000000c493abcc>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5442
    [<00000000de78fd36>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<00000000de78fd36>] netlink_unicast+0x223/0x310 net/netlink/af_netlink.c:1328
    [<0000000017f965b1>] netlink_sendmsg+0x2c0/0x570 net/netlink/af_netlink.c:1917