diff --git a/vllm-v0.6.2/vllm_mlu/vllm_mlu/model_executor/layers/linear.py b/vllm-v0.6.2/vllm_mlu/vllm_mlu/model_executor/layers/linear.py
index 8681cd6..ad7120e 100644
--- a/vllm-v0.6.2/vllm_mlu/vllm_mlu/model_executor/layers/linear.py
+++ b/vllm-v0.6.2/vllm_mlu/vllm_mlu/model_executor/layers/linear.py
@@ -26,6 +26,9 @@ def vllm__module_executor__layers__linear__UnquantizedLinearMethod__apply(
          beta = 1.0
          residual = residual.view(-1, residual.shape[-1])
     res_shape = x.shape[0:-1] + (layer.weight.shape[0], )
+    if x.dtype != layer.weight.dtype:
+        logger.error("[DEBUG-DTYPE] matmul dtype mismatch: x.dtype=%s, weight.dtype=%s, x.shape=%s, weight.shape=%s, layer=%s",
+                     x.dtype, layer.weight.dtype, x.shape, layer.weight.shape, type(layer).__name__)
     return mlu_ops.matmul(x.view(-1, x.shape[-1]), layer.weight, bias, residual, 'none', 1.0, beta).view(res_shape)