1 files changed, 6 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 094747a1227c..3ca141782145 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -384,6 +384,7 @@ static int do_probe_callback(void *data)
                 .version        = nfs_cb_version[1]->number,
                 .authflavor     = RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */
                 .flags          = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
+                .client_name    = clp->cl_principal,
         };
         struct rpc_message msg = {
                 .rpc_proc       = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
@@ -392,6 +393,11 @@ static int do_probe_callback(void *data)
         struct rpc_clnt *client;
         int status;
 
+        if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5)) {
+                status = nfserr_cb_path_down;
+                goto out_err;
+        }
+
         /* Initialize address */
         memset(&addr, 0, sizeof(addr));
         addr.sin_family = AF_INET;