diff --git a/ucm/sparse/gsa_on_device/csrc/ascend/hamming_dist_top_k/op_kernel/hamming_dist_top_k_split_s.h b/ucm/sparse/gsa_on_device/csrc/ascend/hamming_dist_top_k/op_kernel/hamming_dist_top_k_split_s.h
index 4d002502e..837080511 100644
--- a/ucm/sparse/gsa_on_device/csrc/ascend/hamming_dist_top_k/op_kernel/hamming_dist_top_k_split_s.h
+++ b/ucm/sparse/gsa_on_device/csrc/ascend/hamming_dist_top_k/op_kernel/hamming_dist_top_k_split_s.h
@@ -1011,13 +1011,14 @@ class HammingDistTopKSplitSKernel {
         if ASCEND_IS_AIC { return; }
 
         // topK小于32，不使用内部API排序
-        if (curKScalar < 32) { useInnerSort = false; }
+        // (TODO) do not enable inner sort for now as 910B3 has bug
+        // if (curKScalar < 32) { useInnerSort = false; }
 
-        if (useInnerSort) {
-            CustomSort(topKIndexOutTensor, curKScalar);
-            SelectBlockTableFromTopK(curBatchIdx, curKScalar, outGmOffset);
-            return;
-        }
+        // if (useInnerSort) {
+        //     CustomSort(topKIndexOutTensor, curKScalar);
+        //     SelectBlockTableFromTopK(curBatchIdx, curKScalar, outGmOffset);
+        //     return;
+        // }
 
         // 将 TopK 的“chunk索引”映射成 block_id，并写回 GM(indices)
         WriteBlockTableFromTopK(curBatchIdx, topKIndexOutTensor, curKScalar, outGmOffset);
@@ -1509,9 +1510,11 @@ class HammingDistTopKSplitSKernel {
 
         LocalTensor<int32_t> blockIdUb = topKIndexInnerInQueue_.AllocTensor<int32_t>();
         LocalTensor<int32_t> tableBlockTensor = tableBlockBuf_.template Get<int32_t>();
-        DataCopyParams copyParams{1, static_cast<uint16_t>(param_.blockCount * sizeof(int32_t)), 0,
-                                  0};
-        DataCopy(tableBlockTensor, keyBlockTableGm_[curBatchIdx * param_.blockCount], copyParams);
+        DataCopyExtParams copyParams{1, static_cast<uint16_t>(param_.blockCount * sizeof(int32_t)),
+                                     0, 0, 0};
+        DataCopyPadExtParams<int32_t> copyPadParams{false, 0, 0, 0};
+        DataCopyPad(tableBlockTensor, keyBlockTableGm_[curBatchIdx * param_.blockCount], copyParams,
+                    copyPadParams);
 
         ::AscendC::WriteBlockTableFromTopK(curBatchIdx, topKIndexUb, blockIdUb, curKScalar,
                                            outGmOffset, tableBlockTensor, indicesGm_,