BUG: memory leak
unreferenced object 0xffff888122b4c440 (size 32):
  comm "syz-executor567", pid 6937, jiffies 4294943998 (age 8.150s)
  hex dump (first 32 bytes):
    76 65 74 68 32 00 61 73 6b 2f 36 39 33 37 00 6d  veth2.ask/6937.m
    30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  0...............
  backtrace:
    [<0000000055144884>] kmemleak_alloc_recursive /./include/linux/kmemleak.h:43 [inline]
    [<0000000055144884>] slab_post_alloc_hook /mm/slab.h:522 [inline]
    [<0000000055144884>] slab_alloc /mm/slab.c:3319 [inline]
    [<0000000055144884>] __do_kmalloc /mm/slab.c:3653 [inline]
    [<0000000055144884>] __kmalloc_track_caller+0x169/0x2d0 /mm/slab.c:3670
    [<0000000085312d63>] kstrdup+0x3a/0x70 /mm/util.c:53
    [<000000006a60d434>] kstrdup_const+0x48/0x60 /mm/util.c:75
    [<00000000c2b1e0f1>] kvasprintf_const+0x7e/0xe0 /lib/kasprintf.c:48
    [<000000008dddac5d>] kobject_set_name_vargs+0x40/0xe0 /lib/kobject.c:289
    [<000000007e54bd10>] dev_set_name+0x63/0x90 /drivers/base/core.c:1915
    [<00000000f4d82c8c>] netdev_register_kobject+0x5a/0x1b0 /net/core/net-sysfs.c:1727
    [<00000000075c08f3>] register_netdevice+0x397/0x600 /net/core/dev.c:8723
    [<000000002683c18b>] veth_newlink+0x1ee/0x420 /drivers/net/veth.c:1302
    [<000000005fa4eb75>] __rtnl_newlink+0x892/0xb30 /net/core/rtnetlink.c:3196
    [<000000008c86af9b>] rtnl_newlink+0x4e/0x80 /net/core/rtnetlink.c:3254
    [<00000000a6292747>] rtnetlink_rcv_msg+0x36e/0x480 /net/core/rtnetlink.c:5223
    [<00000000a6c9a3fb>] netlink_rcv_skb+0x61/0x170 /net/netlink/af_netlink.c:2477
    [<000000006cd35339>] rtnetlink_rcv+0x1d/0x30 /net/core/rtnetlink.c:5241
    [<00000000bad0ecfe>] netlink_unicast_kernel /net/netlink/af_netlink.c:1302 [inline]
    [<00000000bad0ecfe>] netlink_unicast+0x1ec/0x2d0 /net/netlink/af_netlink.c:1328
    [<0000000060eb909d>] netlink_sendmsg+0x270/0x480 /net/netlink/af_netlink.c:1917