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IDProjectCategoryView StatusDate SubmittedLast Update
0006771VTK(No Category)public2008-04-08 09:302016-08-12 09:54
ReporterLevap 
Assigned ToKitware Robot 
PrioritynormalSeveritycrashReproducibilityalways
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Project
Type
Summary0006771: Bug in vtkImageReader
DescriptionThe following code snippet leads to crash (null pointer access) on a Windows XP 32bit SP2, with 2 GB RAM.

Code snippet:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vtkImageData* img = vtkImageDate::New();

vtkImageReader* ir = vtkImageReader::New();
ir->SetFileName(“d:\\myvolume.raw”);
ir->SetFileDimensionality(3);
ir->SetDataByteOrderToLittleEndian();
ir->SetDataScalarType(VTK_FLOAT);
ir->SetDataExtent(0, 580, 0, 580, 0, 500);

ir->SetDataOrigin(0, 0, 0);
ir->SetDataSpacing(1, 1, 1);
ir->SetHeaderSize(0); // no header
ir->SetNumberOfScalarComponents(1);
ir->SwapBytesOff();
ir->SetFileLowerLeft(1);
ir->SetOutput(img);

ir->Update();

ir->Delete();
img->Delete();
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Explanation and approach to a problem:

I’m trying to load a large volume (> 640 MB), but operating system fails to allocate enough memory in the function vtkDataArrayTemplate<T>::Allocate(vtkIdType sz, vtkIdType) (file: vtkDataArrayTemplate.txx), so it leads to a following error massege:

ERROR: In d:\work\libs\vtk\5_1_0\source\common\vtkDataArrayTemplate.txx, line 133
vtkFloatArray (02736950): Unable to allocate 168200000 elements of size 4 bytes.

This behavior is OK! The problem is the next step: despite of the false allocation the vtkImageReader tries to load the volume and make an access to null pointer -> this leads to a crash.
Let us take a close look at the function vtkImageReader::ExecuteData(vtkDataObject *output) in the file vtkImageReader.cxx. The error message is produced during the call in the first line of the function:

vtkImageData *data = this->AllocateOutputData(output);

After this line I would place a check block for a successful memory allocation, something like this:

if (!data->GetScalarPointer())
{
  return;
}
Steps To Reproduce
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Issue History
Date ModifiedUsernameFieldChange
2008-04-08 09:30LevapNew Issue
2011-06-16 13:11Zack GalbreathCategory => (No Category)
2016-08-12 09:54Kitware RobotNote Added: 0036966
2016-08-12 09:54Kitware RobotStatusexpired => closed
2016-08-12 09:54Kitware RobotResolutionopen => moved
2016-08-12 09:54Kitware RobotAssigned To => Kitware Robot

Notes
(0036966)
Kitware Robot   
2016-08-12 09:54   
Resolving issue as `moved`.

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