1 files changed, 2 insertions, 1 deletions

diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c
index f1eb0d16666c..458f85e9b0ba 100644
--- a/net/sunrpc/auth_gss/gss_rpc_upcall.c
+++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c
@@ -298,7 +298,8 @@ int gssp_accept_sec_context_upcall(struct net *net,
         if (res.context_handle) {
                 data->out_handle = rctxh.exported_context_token;
                 data->mech_oid.len = rctxh.mech.len;
-                memcpy(data->mech_oid.data, rctxh.mech.data,
+                if (rctxh.mech.data)
+                        memcpy(data->mech_oid.data, rctxh.mech.data,
                                                 data->mech_oid.len);
                 client_name = rctxh.src_name.display_name;
         }