diff --git a/kernels/op_host/bev_pool.cpp b/kernels/op_host/bev_pool.cpp
index 3acdc5783f0bc2d259f27bfd948f37961e5f65ce..22e3f09144325604420fc785b1fde3e76de1cea3 100644
--- a/kernels/op_host/bev_pool.cpp
+++ b/kernels/op_host/bev_pool.cpp
@@ -134,23 +134,33 @@ static graphStatus InferShapeForBEVPool(gert::InferShapeContext* context)
 
 static graphStatus InferShapeForBEVPoolGrad(gert::InferShapeContext* context)
 {
+    CHECK_NULLPTR(context);
     const gert::Shape* GeomFeatShape = context->GetInputShape(GEOM_FEAT_IDX);
+    CHECK_NULLPTR(GeomFeatShape);
     const auto n = GeomFeatShape->GetDim(0);
     auto attrs = context->GetAttrs();
-    CHECK_NULLPTR(attrs)
-    auto c = *attrs->GetInt(C_IDX);
+    CHECK_NULLPTR(attrs);
+    auto c_ptr = attrs->GetInt(C_IDX);
+    CHECK_NULLPTR(c_ptr);
+    auto c = *c_ptr;
     gert::Shape* gradFeatShape = context->GetOutputShape(0);
+    CHECK_NULLPTR(gradFeatShape);
     *gradFeatShape = {n, c};
     return GRAPH_SUCCESS;
 }
 
 static graphStatus InferShapeForBEVPoolV2Grad(gert::InferShapeContext* context)
 {
+    CHECK_NULLPTR(context);
     gert::Shape* gradDepthShape = context->GetOutputShape(0);
     const gert::Shape* depthShape = context->GetInputShape(1);
+    CHECK_NULLPTR(gradDepthShape);
+    CHECK_NULLPTR(depthShape);
     *gradDepthShape = *depthShape;
     gert::Shape* gradFeatShape = context->GetOutputShape(1);
     const gert::Shape* featShape = context->GetInputShape(2);
+    CHECK_NULLPTR(gradFeatShape);
+    CHECK_NULLPTR(featShape);
     *gradFeatShape = *featShape;
     return GRAPH_SUCCESS;
 }