BUG: memory leak
unreferenced object 0xffff888117c3e180 (size 64):
  comm "syz-executor690", pid 7063, jiffies 4294942376 (age 12.340s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    90 e1 c3 17 81 88 ff ff 90 e1 c3 17 81 88 ff ff  ................
  backtrace:
    [<00000000de7d5e50>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000de7d5e50>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000de7d5e50>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000de7d5e50>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000fdcd4d88>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000fdcd4d88>] netdev_name_node_alloc+0x2a/0x70 net/core/dev.c:237
    [<00000000c0f85516>] netdev_name_node_head_alloc net/core/dev.c:251 [inline]
    [<00000000c0f85516>] register_netdevice+0xaf/0x650 net/core/dev.c:9239
    [<0000000095432086>] ip_tunnel_newlink+0xda/0x220 net/ipv4/ip_tunnel.c:1141
    [<0000000055d13d21>] ipgre_newlink+0xa2/0xd0 net/ipv4/ip_gre.c:1299
    [<000000007032392e>] __rtnl_newlink+0x89a/0xb80 net/core/rtnetlink.c:3303
    [<0000000012f6aba3>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3361
    [<0000000046cbdb8c>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5422
    [<000000005e5fbb9d>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<000000003ed872f1>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5440
    [<0000000005672909>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<0000000005672909>] netlink_unicast+0x223/0x310 net/netlink/af_netlink.c:1328
    [<000000007b9ba5b9>] netlink_sendmsg+0x29f/0x550 net/netlink/af_netlink.c:1917
    [<00000000c97f57d9>] sock_sendmsg_nosec net/socket.c:638 [inline]
    [<00000000c97f57d9>] sock_sendmsg+0x54/0x70 net/socket.c:658
    [<00000000d7cd9e04>] ____sys_sendmsg+0x2d0/0x300 net/socket.c:2329
    [<00000000d0e2bb24>] ___sys_sendmsg+0x9c/0x100 net/socket.c:2383
    [<0000000047f1afe2>] __sys_sendmsg+0x80/0xf0 net/socket.c:2429

BUG: memory leak
unreferenced object 0xffff888122a71040 (size 64):
  comm "syz-executor690", pid 7064, jiffies 4294942886 (age 7.240s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    50 10 a7 22 81 88 ff ff 50 10 a7 22 81 88 ff ff  P.."....P.."....
  backtrace:
    [<00000000de7d5e50>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000de7d5e50>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<00000000de7d5e50>] slab_alloc mm/slab.c:3319 [inline]
    [<00000000de7d5e50>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548
    [<00000000fdcd4d88>] kmalloc include/linux/slab.h:556 [inline]
    [<00000000fdcd4d88>] netdev_name_node_alloc+0x2a/0x70 net/core/dev.c:237
    [<00000000c0f85516>] netdev_name_node_head_alloc net/core/dev.c:251 [inline]
    [<00000000c0f85516>] register_netdevice+0xaf/0x650 net/core/dev.c:9239
    [<0000000095432086>] ip_tunnel_newlink+0xda/0x220 net/ipv4/ip_tunnel.c:1141
    [<0000000055d13d21>] ipgre_newlink+0xa2/0xd0 net/ipv4/ip_gre.c:1299
    [<000000007032392e>] __rtnl_newlink+0x89a/0xb80 net/core/rtnetlink.c:3303
    [<0000000012f6aba3>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3361
    [<0000000046cbdb8c>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5422
    [<000000005e5fbb9d>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<000000003ed872f1>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5440
    [<0000000005672909>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<0000000005672909>] netlink_unicast+0x223/0x310 net/netlink/af_netlink.c:1328
    [<000000007b9ba5b9>] netlink_sendmsg+0x29f/0x550 net/netlink/af_netlink.c:1917
    [<00000000c97f57d9>] sock_sendmsg_nosec net/socket.c:638 [inline]
    [<00000000c97f57d9>] sock_sendmsg+0x54/0x70 net/socket.c:658
    [<00000000d7cd9e04>] ____sys_sendmsg+0x2d0/0x300 net/socket.c:2329
    [<00000000d0e2bb24>] ___sys_sendmsg+0x9c/0x100 net/socket.c:2383
    [<0000000047f1afe2>] __sys_sendmsg+0x80/0xf0 net/socket.c:2429