--- ./fs/nfs/dir.c.orig	2005-02-02 23:19:38.000000000 +0100
+++ ./fs/nfs/dir.c	2005-02-02 23:28:44.000000000 +0100
@@ -1577,6 +1577,7 @@
 	struct rpc_cred *cred;
 	int mode = inode->i_mode;
 	int res;
+	struct rpc_groups fsg = { 1, { inode->i_gid } };
 
 	if (mask == 0)
 		return 0;
@@ -1613,7 +1614,7 @@
 	if (!NFS_PROTO(inode)->access)
 		goto out_notsup;
 
-	cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, NULL, 0);
+	cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, &fsg, 0);
 	res = nfs_do_access(inode, cred, mask);
 	put_rpccred(cred);
 	unlock_kernel();