00020000080 RSI: 00000000000089f1 RDI: 0000000000000006
BUG: memory leak
unreferenced object 0xffff8881226f10e0 (size 32):
  comm "syz-executor101", pid 6925, jiffies 4294944146 (age 13.030s)
  hex dump (first 32 bytes):
    69 70 36 74 6e 6c 31 00 6b 2f 36 39 32 35 00 00  ip6tnl1.k/6925..
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000001a0b86b1>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<000000001a0b86b1>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<000000001a0b86b1>] slab_alloc mm/slab.c:3326 [inline]
    [<000000001a0b86b1>] __do_kmalloc mm/slab.c:3658 [inline]
    [<000000001a0b86b1>] __kmalloc_track_caller+0x15d/0x2c0 mm/slab.c:3675
    [<000000005afc7a4a>] kstrdup+0x3a/0x70 mm/util.c:52
    [<00000000451fac78>] kstrdup_const+0x48/0x60 mm/util.c:74
    [<000000006d873731>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<00000000498180f6>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<000000000600ae95>] dev_set_name+0x63/0x90 drivers/base/core.c:1915
    [<00000000fee8e323>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1727
    [<00000000e388444d>] register_netdevice+0x397/0x600 net/core/dev.c:8733
    [<00000000dad9d1f8>] ip6_tnl_create2+0x47/0x90 net/ipv6/ip6_tunnel.c:264
    [<00000000d9d7e4e7>] ip6_tnl_create net/ipv6/ip6_tunnel.c:315 [inline]
    [<00000000d9d7e4e7>] ip6_tnl_locate net/ipv6/ip6_tunnel.c:363 [inline]
    [<00000000d9d7e4e7>] ip6_tnl_locate+0x1f2/0x2e0 net/ipv6/ip6_tunnel.c:341
    [<0000000053cbfc31>] ip6_tnl_ioctl+0x198/0x3d0 net/ipv6/ip6_tunnel.c:1629
    [<000000002aa58998>] dev_ifsioc+0x324/0x460 net/core/dev_ioctl.c:322
    [<000000009772f044>] dev_ioctl+0x157/0x470 net/core/dev_ioctl.c:514
    [<000000000d18e30e>] sock_ioctl+0x394/0x480 net/socket.c:1108
    [<00000000c149b7ec>] vfs_ioctl fs/ioctl.c:46 [inline]
    [<00000000c149b7ec>] file_ioctl fs/ioctl.c:509 [inline]
    [<00000000c149b7ec>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696
    [<0000000007ca11cf>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713