Check If ImageBuffer is allocated before proceeding.

Source/core/rendering/svg/RenderSVGResourceFilter.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 113 matching lines @@
 {
     IntRect paintRect = filter->sourceImageRect();
     // Don't create empty ImageBuffers.
     if (paintRect.isEmpty())
         return false;
 
     OwnPtr<ImageBufferSurface> surface = adoptPtr(new UnacceleratedImageBufferSurface(paintRect.size()));
     if (!surface->isValid())
         return false;
     OwnPtr<ImageBuffer> image = ImageBuffer::create(surface.release());
+    if (!image)

[Stephen White, 2014/09/12 19:12:20]

This change seems harmless, but note that this code is no longer called in
Chrome (and I plan to remove it in the next release).

[sivag, 2014/09/12 20:52:06]

Thanks Stephen. Please let me know if some changes are needed here.

+        return false;
 
     GraphicsContext* imageContext = image->context();
     ASSERT(imageContext);
 
     imageContext->translate(-paintRect.x(), -paintRect.y());
     imageContext->concatCTM(filter->absoluteTransform());
     imageBuffer = image.release();
     return true;
 }
 
@@ skipping 302 matching lines @@
     markAllClientLayersForInvalidation();
 }
 
 FloatRect RenderSVGResourceFilter::drawingRegion(RenderObject* object) const
 {
     FilterData* filterData = m_filter.get(object);
     return filterData ? filterData->drawingRegion : FloatRect();
 }
 
 }