BUG: memory leak
unreferenced object 0xffff888114b40800 (size 32):
  comm "syz-executor229", pid 7069, jiffies 4294941664 (age 8.210s)
  hex dump (first 32 bytes):
    76 65 74 68 32 00 61 73 6b 2f 37 30 36 39 00 6d  veth2.ask/7069.m
    30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  0...............
  backtrace:
    [<000000001b98b04f>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000001b98b04f>] slab_post_alloc_hook mm/slab.h:522 [inline]
    [<000000001b98b04f>] slab_alloc mm/slab.c:3319 [inline]
    [<000000001b98b04f>] __do_kmalloc mm/slab.c:3653 [inline]
    [<000000001b98b04f>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3670
    [<000000002d34bdea>] kstrdup+0x3a/0x70 mm/util.c:53
    [<00000000b9166264>] kstrdup_const+0x48/0x60 mm/util.c:75
    [<00000000b9de8342>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<00000000e7014d52>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<0000000007438a37>] dev_set_name+0x63/0x90 drivers/base/core.c:1915
    [<000000003f2fe881>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1727
    [<00000000c15a9843>] register_netdevice+0x397/0x600 net/core/dev.c:8723
    [<000000002f5d3205>] veth_newlink+0x1ee/0x420 drivers/net/veth.c:1302
    [<000000009ec763f8>] __rtnl_newlink+0x892/0xb30 net/core/rtnetlink.c:3196
    [<00000000e8d5578f>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3254
    [<000000005fdb9ba8>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5223
    [<00000000c1236453>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<00000000b8b9e294>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5241
    [<00000000106f0145>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<00000000106f0145>] netlink_unicast+0x1ec/0x2d0 net/netlink/af_netlink.c:1328
    [<000000001e97471f>] netlink_sendmsg+0x270/0x480 net/netlink/af_netlink.c:1917