diff --git a/ge/graph/build/memory/graph_mem_assigner.cc b/ge/graph/build/memory/graph_mem_assigner.cc
index 119904ab..872958cd 100755
--- a/ge/graph/build/memory/graph_mem_assigner.cc
+++ b/ge/graph/build/memory/graph_mem_assigner.cc
@@ -1700,6 +1700,8 @@ void GraphMemoryAssigner::PrintMemoryOffset() {
 ge::Status GraphMemoryAssigner::TryGetNodeRefIndexes(const NodePtr &node, map<int32_t, int32_t> &out2ins) const{
   for (const auto &out_data_anchor : node->GetAllOutDataAnchors()) {
     int32_t reuse_in_index = -1;
+    // nopadding means output[0] reuse input[0], but as history reason,
+    // other output index also return true for mem assign in block_mem_assigner
     if (GraphUtils::IsNoPaddingRefFromInput(out_data_anchor, reuse_in_index)) {
       out2ins.emplace(out_data_anchor->GetIdx(), reuse_in_index);
       return ge::SUCCESS;
diff --git a/metadef b/metadef
index 72bcde72..72984c62 160000
--- a/metadef
+++ b/metadef
@@ -1 +1 @@
-Subproject commit 72bcde72074856e6cb1e8ba19df43b358bdb0160
+Subproject commit 72984c62e434da09f8ea7d7a4fd4a365e0b6f42c