NFS RPC_AUTH_GSS unsupported on v4.1 back channel

Signed-off-by: Andy Adamson <andros@netapp.com>
Acked-by: Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 15677e7bede5b8896fc468e9baa148ffb675fb66..753a9e315518312f7d2a35df8b0364ea29f6b507 100644 (file)
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -365,6 +365,9 @@ static int check_gss_callback_principal(struct nfs_client *clp,
        struct rpc_clnt *r = clp->cl_rpcclient;
        char *p = svc_gss_principal(rqstp);
 
+       /* No RPC_AUTH_GSS on NFSv4.1 back channel yet */
+       if (clp->cl_minorversion != 0)
+               return SVC_DROP;
        /*
         * It might just be a normal user principal, in which case
         * userspace won't bother to tell us the name at all.