More strict shape check on Conv operators. (#4637)

sighingnow · soumith · commit 9e3bcf4bce5e · 2018-02-06T21:45:01.000-08:00
* More strict shape check on Conv operators.

Signed-off-by: HE, Tao &lt;sighingnow@gmail.com&gt;

* Test case for conv's shape check.

Signed-off-by: HE, Tao &lt;sighingnow@gmail.com&gt;

* Fix lint.

Signed-off-by: HE, Tao &lt;sighingnow@gmail.com&gt;
diff --git a/test/test_nn.py b/test/test_nn.py
@@ -1969,6 +1969,32 @@ def test_conv_modules_raise_error_on_incorrect_input_size(self):
                 input = Variable(torch.Tensor(torch.Size((3, ) * dims)))
                 self.assertRaises(ValueError, lambda: module(input))
 
+    def test_conv_shapecheck(self):
+        def test(should_raise, module, input_size):
+            input = Variable(torch.Tensor(3, *input_size))
+            if should_raise:
+                self.assertRaises(RuntimeError, lambda: module(input))
+            else:
+                # just run it to ensure no exception raised.
+                module(input)
+
+        # Conv1d
+        test(True, nn.Conv1d(1, 1, 3), (1, 2))
+        test(True, nn.Conv1d(1, 1, 3, stride=2), (1, 2))
+        test(False, nn.Conv1d(1, 1, 2), (1, 2))
+        test(False, nn.Conv1d(1, 1, 2, stride=2), (1, 2))
+        test(False, nn.Conv1d(1, 1, 3, stride=2, padding=1), (1, 2))
+
+        # Conv2d
+        test(True, nn.Conv2d(1, 1, (3, 3)), (1, 2, 2))
+        test(False, nn.Conv2d(1, 1, (3, 3)), (1, 3, 3))
+        test(False, nn.Conv2d(1, 1, (3, 3), padding=1), (1, 2, 2))
+
+        # Conv3D
+        test(True, nn.Conv3d(1, 1, (3, 3, 3)), (1, 2, 2, 2))
+        test(False, nn.Conv3d(1, 1, (3, 3, 3)), (1, 3, 3, 3))
+        test(False, nn.Conv3d(1, 1, (3, 3, 3), padding=1), (1, 2, 2, 2))
+
     def test_ConvTranspose2d_output_size(self):
         m = nn.ConvTranspose2d(3, 4, 3, 3, 0, 2)
         i = Variable(torch.randn(2, 3, 6, 6))
diff --git a/torch/lib/THCUNN/generic/SpatialConvolutionMM.cu b/torch/lib/THCUNN/generic/SpatialConvolutionMM.cu
@@ -38,8 +38,18 @@ static inline void THNN_(SpatialConvolutionMM_shapeCheck)(
   int64_t inputHeight  = input->size[dimh];
   int64_t inputWidth   = input->size[dimw];
   int64_t nOutputPlane = weight->size[0];
-  int64_t outputHeight = (inputHeight + 2*padH - kH) / dH + 1;
-  int64_t outputWidth  = (inputWidth + 2*padW - kW) / dW + 1;
+
+  int64_t exactInputHeight = inputHeight + 2 * padH;
+  int64_t exactInputWidth = inputWidth + 2 * padW;
+
+  if (exactInputHeight < kH || exactInputWidth < kW) {
+    THError("Calculated input size: (%d x %d). "
+      "Kernel size: (%d x %d). Kernel size can't greater than actual input size",
+      exactInputHeight,exactInputWidth,kH,kW);
+  }
+
+  int64_t outputHeight = (exactInputHeight - kH) / dH + 1;
+  int64_t outputWidth  = (exactInputWidth - kW) / dW + 1;
 
   if (outputWidth < 1 || outputHeight < 1)
       THError("Given input size: (%d x %d x %d). "
diff --git a/torch/lib/THCUNN/generic/VolumetricConvolution.cu b/torch/lib/THCUNN/generic/VolumetricConvolution.cu
@@ -72,9 +72,20 @@ static inline void THNN_(VolumetricConvolution_shapeCheck)
   int64_t inputWidth   = input->size[dimw];
   int64_t inputHeight  = input->size[dimh];
   int64_t inputDepth   = input->size[dimd];
-  int64_t outputWidth  = (inputWidth  + 2*padH - kH) / dH + 1;
-  int64_t outputHeight = (inputHeight + 2*padT - kT) / dT + 1;
-  int64_t outputDepth  = (inputDepth  + 2*padW - kW) / dW + 1;
+
+  int64_t exactInputDepth = inputDepth + 2*padT;
+  int64_t exactInputHeight = inputHeight + 2*padH;
+  int64_t exactInputWidth = inputWidth + 2*padW;
+
+  if (exactInputDepth < kT || exactInputHeight < kH || exactInputWidth < kW) {
+    THError("Calculated input size: (%d x %d x %d). "
+      "Kernel size: (%d x %d x %d). Kernel size can't greater than actual input size",
+      exactInputDepth,exactInputHeight,exactInputWidth,kT,kH,kW);
+  }
+
+  int64_t outputWidth  = (exactInputDepth - kH) / dH + 1;
+  int64_t outputHeight = (exactInputHeight - kT) / dT + 1;
+  int64_t outputDepth  = (exactInputWidth - kW) / dW + 1;
 
   if (outputWidth < 1 || outputHeight < 1 || outputDepth < 1)
   {
diff --git a/torch/lib/THNN/generic/SpatialConvolutionMM.c b/torch/lib/THNN/generic/SpatialConvolutionMM.c
@@ -36,13 +36,24 @@ static inline void THNN_(SpatialConvolutionMM_shapeCheck)(
   int64_t inputHeight  = input->size[dimh];
   int64_t inputWidth   = input->size[dimw];
   int64_t nOutputPlane = weight->size[0];
-  int64_t outputHeight = (inputHeight + 2*padH - kH) / dH + 1;
-  int64_t outputWidth  = (inputWidth + 2*padW - kW) / dW + 1;
 
-  if (outputWidth < 1 || outputHeight < 1)
+  int64_t exactInputHeight = inputHeight + 2 * padH;
+  int64_t exactInputWidth = inputWidth + 2 * padW;
+
+  if (exactInputHeight < kH || exactInputWidth < kW) {
+    THError("Calculated input size: (%d x %d). "
+      "Kernel size: (%d x %d). Kernel size can't greater than actual input size",
+      exactInputHeight,exactInputWidth,kH,kW);
+  }
+
+  int64_t outputHeight = (exactInputHeight - kH) / dH + 1;
+  int64_t outputWidth  = (exactInputWidth - kW) / dW + 1;
+
+  if (outputWidth < 1 || outputHeight < 1) {
     THError("Given input size: (%d x %d x %d). "
 	    "Calculated output size: (%d x %d x %d). Output size is too small",
 	    nInputPlane,inputHeight,inputWidth,nOutputPlane,outputHeight,outputWidth);
+  }
 
   THNN_CHECK_DIM_SIZE(input, ndim, dimf, nInputPlane);
 
diff --git a/torch/lib/THNN/generic/VolumetricConvolutionMM.c b/torch/lib/THNN/generic/VolumetricConvolutionMM.c
@@ -43,6 +43,10 @@ static void inline THNN_(VolumetricConvolutionMM_shapeCheck)(
   int64_t inputHeight;
   int64_t inputWidth;
   int64_t nOutputPlane;
+
+  int64_t exactInputDepth;
+  int64_t exactInputHeight;
+  int64_t exactInputWidth;
   int64_t outputDepth;
   int64_t outputHeight;
   int64_t outputWidth;
@@ -52,9 +56,20 @@ static void inline THNN_(VolumetricConvolutionMM_shapeCheck)(
   inputHeight  = input->size[dimh];
   inputWidth   = input->size[dimw];
   nOutputPlane = weight->size[0];
-  outputDepth  = (inputDepth + 2*pT - kT) / dT + 1;
-  outputHeight = (inputHeight + 2*pH - kH) / dH + 1;
-  outputWidth  = (inputWidth + 2*pW - kW) / dW + 1;
+
+  exactInputDepth = inputDepth + 2*pT;
+  exactInputHeight = inputHeight + 2*pH;
+  exactInputWidth = inputWidth + 2*pW;
+
+  if (exactInputDepth < kT || exactInputHeight < kH || exactInputWidth < kW) {
+    THError("Calculated input size: (%d x %d x %d). "
+      "Kernel size: (%d x %d x %d). Kernel size can't greater than actual input size",
+      exactInputDepth,exactInputHeight,exactInputWidth,kT,kH,kW);
+  }
+
+  outputDepth  = (exactInputDepth - kT) / dT + 1;
+  outputHeight = (exactInputHeight - kH) / dH + 1;
+  outputWidth  = (exactInputWidth - kW) / dW + 1;
 
   if (outputWidth < 1 || outputHeight < 1 || outputDepth < 1)
   {
