BUG: memory leak
unreferenced object 0xffff8881176fbbc0 (size 32):
  comm "syz-executor222", pid 7000, jiffies 4294949725 (age 19.980s)
  hex dump (first 32 bytes):
    7d 00 30 30 2f 74 61 73 6b 2f 37 30 30 30 00 61  }.00/task/7000.a
    6b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  k...............
  backtrace:
    [<000000003cf2edfc>] kmemleak_alloc_recursive /./include/linux/kmemleak.h:43 [inline]
    [<000000003cf2edfc>] slab_post_alloc_hook /mm/slab.h:522 [inline]
    [<000000003cf2edfc>] slab_alloc /mm/slab.c:3319 [inline]
    [<000000003cf2edfc>] __do_kmalloc /mm/slab.c:3653 [inline]
    [<000000003cf2edfc>] __kmalloc_track_caller+0x169/0x2d0 /mm/slab.c:3670
    [<0000000001261af2>] kstrdup+0x3a/0x70 /mm/util.c:53
    [<00000000508aa0a2>] kstrdup_const+0x48/0x60 /mm/util.c:75
    [<00000000811c16f5>] kvasprintf_const+0x7e/0xe0 /lib/kasprintf.c:48
    [<00000000e62498a1>] kobject_set_name_vargs+0x40/0xe0 /lib/kobject.c:289
    [<0000000070c7c52f>] dev_set_name+0x63/0x90 /drivers/base/core.c:1915
    [<000000003539553c>] netdev_register_kobject+0x5a/0x1b0 /net/core/net-sysfs.c:1727
    [<000000000b90a0c5>] register_netdevice+0x397/0x600 /net/core/dev.c:8723
    [<000000007468480d>] ip6_tnl_create2+0x3c/0x90 /net/ipv6/ip6_tunnel.c:264
    [<00000000276f7e5f>] ip6_tnl_create /net/ipv6/ip6_tunnel.c:315 [inline]
    [<00000000276f7e5f>] ip6_tnl_locate /net/ipv6/ip6_tunnel.c:363 [inline]
    [<00000000276f7e5f>] ip6_tnl_locate+0x1e4/0x2d0 /net/ipv6/ip6_tunnel.c:341
    [<000000003f7b8890>] ip6_tnl_ioctl+0x18d/0x3c0 /net/ipv6/ip6_tunnel.c:1629
    [<0000000008ea76c8>] dev_ifsioc+0x324/0x460 /net/core/dev_ioctl.c:322
    [<0000000003258e1d>] dev_ioctl+0x157/0x454 /net/core/dev_ioctl.c:514
    [<00000000b5233821>] sock_ioctl+0x394/0x480 /net/socket.c:1103
    [<00000000188aeafc>] vfs_ioctl /fs/ioctl.c:46 [inline]
    [<00000000188aeafc>] file_ioctl /fs/ioctl.c:509 [inline]
    [<00000000188aeafc>] do_vfs_ioctl+0x63f/0x830 /fs/ioctl.c:696
    [<00000000c85bbb8b>] ksys_ioctl+0x86/0xb0 /fs/ioctl.c:713

BUG: memory leak
unreferenced object 0xffff888115a0a0a0 (size 32):
  comm "syz-executor222", pid 7002, jiffies 4294950932 (age 7.910s)
  hex dump (first 32 bytes):
    89 00 30 32 2f 74 61 73 6b 2f 37 30 30 32 00 00  ..02/task/7002..
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000003cf2edfc>] kmemleak_alloc_recursive /./include/linux/kmemleak.h:43 [inline]
    [<000000003cf2edfc>] slab_post_alloc_hook /mm/slab.h:522 [inline]
    [<000000003cf2edfc>] slab_alloc /mm/slab.c:3319 [inline]
    [<000000003cf2edfc>] __do_kmalloc /mm/slab.c:3653 [inline]
    [<000000003cf2edfc>] __kmalloc_track_caller+0x169/0x2d0 /mm/slab.c:3670
    [<0000000001261af2>] kstrdup+0x3a/0x70 /mm/util.c:53
    [<00000000508aa0a2>] kstrdup_const+0x48/0x60 /mm/util.c:75
    [<00000000811c16f5>] kvasprintf_const+0x7e/0xe0 /lib/kasprintf.c:48
    [<00000000e62498a1>] kobject_set_name_vargs+0x40/0xe0 /lib/kobject.c:289
    [<0000000070c7c52f>] dev_set_name+0x63/0x90 /drivers/base/core.c:1915
    [<000000003539553c>] netdev_register_kobject+0x5a/0x1b0 /net/core/net-sysfs.c:1727
    [<000000000b90a0c5>] register_netdevice+0x397/0x600 /net/core/dev.c:8723
    [<000000007468480d>] ip6_tnl_create2+0x3c/0x90 /net/ipv6/ip6_tunnel.c:264
    [<00000000276f7e5f>] ip6_tnl_create /net/ipv6/ip6_tunnel.c:315 [inline]
    [<00000000276f7e5f>] ip6_tnl_locate /net/ipv6/ip6_tunnel.c:363 [inline]
    [<00000000276f7e5f>] ip6_tnl_locate+0x1e4/0x2d0 /net/ipv6/ip6_tunnel.c:341
    [<000000003f7b8890>] ip6_tnl_ioctl+0x18d/0x3c0 /net/ipv6/ip6_tunnel.c:1629
    [<0000000008ea76c8>] dev_ifsioc+0x324/0x460 /net/core/dev_ioctl.c:322
    [<0000000003258e1d>] dev_ioctl+0x157/0x454 /net/core/dev_ioctl.c:514
    [<00000000b5233821>] sock_ioctl+0x394/0x480 /net/socket.c:1103
    [<00000000188aeafc>] vfs_ioctl /fs/ioctl.c:46 [inline]
    [<00000000188aeafc>] file_ioctl /fs/ioctl.c:509 [inline]
    [<00000000188aeafc>] do_vfs_ioctl+0x63f/0x830 /fs/ioctl.c:696
    [<00000000c85bbb8b>] ksys_ioctl+0x86/0xb0 /fs/ioctl.c:713