NFS: Fabricate fscache server index key correctly

When fabricating a server index key for fscache, we should clear the index key
buffer before starting to fill it in, not in the middle.

Reported-by: James Pearson <james-p@moving-picture.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/nfs/fscache-index.c b/fs/nfs/fscache-index.c
index 7cf2c4699b08..777b055063f6 100644
--- a/fs/nfs/fscache-index.c
+++ b/fs/nfs/fscache-index.c
@@ -74,11 +74,10 @@ static uint16_t nfs_server_get_key(const void *cookie_netfs_data,
         struct nfs_server_key *key = buffer;
         uint16_t len = sizeof(struct nfs_server_key);
 
+        memset(key, 0, len);
         key->nfsversion = clp->rpc_ops->version;
         key->family = clp->cl_addr.ss_family;
 
-        memset(key, 0, len);
-
         switch (clp->cl_addr.ss_family) {
         case AF_INET:
                 key->port = sin->sin_port;