diff --git a/ge/graph/passes/link_gen_mask_nodes_pass.cc b/ge/graph/passes/link_gen_mask_nodes_pass.cc
index 2788bc43..8dfd447d 100755
--- a/ge/graph/passes/link_gen_mask_nodes_pass.cc
+++ b/ge/graph/passes/link_gen_mask_nodes_pass.cc
@@ -28,6 +28,7 @@ using std::vector;
 
 namespace ge {
 namespace {
+const size_t kGenMaskInputIndex = 1;
 const size_t kDefaultMaxParallelNum = 1;
 }  // namespace
 
@@ -104,12 +105,14 @@ void LinkGenMaskNodesPass::GetAllGenMaskNodes(ComputeGraphPtr graph, vector<Node
     }
 
     auto in_data_nodes = node->GetInDataNodes();
-    for (auto &in_data_node : in_data_nodes) {
-      // node gen_mask is located at different place in the fused node
-      if (in_data_node->GetName().find(DROPOUTGENMASK) == in_data_node->GetName().npos) {
-        continue;
+    if (in_data_nodes.size() > kGenMaskInputIndex) {
+      NodePtr &gen_mask = in_data_nodes.at(kGenMaskInputIndex);
+      for (auto &in_data_node : in_data_nodes) {
+        // node gen_mask is located at different place in the fused node
+        if (in_data_node->GetName().find(DROPOUTGENMASK) != in_data_node->GetName().npos) {
+          gen_mask = in_data_node;
+        }
       }
-      NodePtr &gen_mask = in_data_node;
 
       if ((gen_mask->GetOpDesc() == nullptr) || (gen_mask->GetOpDesc()->HasAttr(ATTR_NAME_STREAM_LABEL))) {
         continue;