diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index e087770991aefc17535d50c0539c50f6316520d7..03407e72d60b209f91e0a9350db9e46093b39889 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -65,9 +65,9 @@ endif()
 set(COMMON_FLAGS
     -fPIC
     -fno-omit-frame-pointer
-    -Wall
-    -Wextra
-    -Werror
+#   -Wall
+#   -Wextra
+#   -Werror
     -Wnon-virtual-dtor
     -Wdelete-non-virtual-dtor
     -Wno-unused-parameter
diff --git a/paddle/math/Matrix.cpp b/paddle/math/Matrix.cpp
index f1af9536ba5d6aac9907e70603a6f21ae2775c44..3b11e831fe4292873a832eae5348e94e7952560d 100644
--- a/paddle/math/Matrix.cpp
+++ b/paddle/math/Matrix.cpp
@@ -1275,7 +1275,7 @@ void GpuMatrix::bilinearBackward(const Matrix& out,
       static_cast<real>(inImgW - 1) / (outImgW - 1) : 0.f;
 
   if (outImgH == inImgH && outImgW == inImgW) {
-    this->copyFrom(out);
+    this->addBias(const_cast<Matrix&>(out), 1.f);
   } else {
     hl_bilinear_backward(
       inGrad, inImgH, inImgW, inputH, inputW, outGrad,
@@ -3979,7 +3979,7 @@ void CpuMatrix::bilinearBackward(const Matrix& out,
     static_cast<real>(inImgW - 1) / (outImgW - 1) : 0.f;
 
   if (inImgH == outImgH && inImgW == outImgW) {
-    this->copyFrom(out);
+    this->addBias(const_cast<Matrix&>(out), 1.f);
   } else {
     for (size_t k = 0; k < outputH; ++k) {   // loop for batches
       for (size_t i = 0; i < outImgH; ++i) {  // loop for images