nfs4: fix a typo of NFS_ATTR_FATTR_GROUP_NAME

This typo cause a memory leak, and a bad client's group id.
unreferenced object 0xffff96d8073998d0 (size 8):
  comm "kworker/0:3", pid 34224, jiffies 4295361338 (age 761.752s)
  hex dump (first 8 bytes):
    30 00 39 07 d8 96 ff ff                          0.9.....
  backtrace:
    [<ffffffffb883212a>] kmemleak_alloc+0x4a/0xa0
    [<ffffffffb8237bc0>] __kmalloc+0x140/0x220
    [<ffffffffc05c921c>] xdr_stream_decode_string_dup+0x7c/0x110 [sunrpc]
    [<ffffffffc08edcf0>] decode_getfattr_attrs+0x940/0x1630 [nfsv4]
    [<ffffffffc08eea7b>] decode_getfattr_generic.constprop.108+0x9b/0x100 [nfsv4]
    [<ffffffffc08eebaf>] nfs4_xdr_dec_open+0xcf/0x100 [nfsv4]
    [<ffffffffc05bf9c7>] rpcauth_unwrap_resp+0xa7/0xe0 [sunrpc]
    [<ffffffffc05afc70>] call_decode+0x1e0/0x810 [sunrpc]
    [<ffffffffc05bc64d>] __rpc_execute+0x8d/0x420 [sunrpc]
    [<ffffffffc05bc9f2>] rpc_async_schedule+0x12/0x20 [sunrpc]
    [<ffffffffb80bb077>] process_one_work+0x197/0x430
    [<ffffffffb80bb35e>] worker_thread+0x4e/0x4a0
    [<ffffffffb80c1d41>] kthread+0x101/0x140
    [<ffffffffb8839a5c>] ret_from_fork+0x2c/0x40
    [<ffffffffffffffff>] 0xffffffffffffffff

Fixes: 686a816ab6 ("NFSv4: Clean up owner/group attribute decode")
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index f0369e36275341404db0684aebb4e9bdba273205..80ce289eea05326336a7edecbe8a132ee4900d23 100644 (file)
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -3942,7 +3942,7 @@ static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
                if (len <= 0)
                        goto out;
                dprintk("%s: name=%s\n", __func__, group_name->data);
-               return NFS_ATTR_FATTR_OWNER_NAME;
+               return NFS_ATTR_FATTR_GROUP_NAME;
        } else {
                len = xdr_stream_decode_opaque_inline(xdr, (void **)&p,
                                XDR_MAX_NETOBJ);