Modified: trunk/LayoutTests/ChangeLog (285768 => 285769)
--- trunk/LayoutTests/ChangeLog 2021-11-13 01:23:27 UTC (rev 285768)
+++ trunk/LayoutTests/ChangeLog 2021-11-13 02:12:05 UTC (rev 285769)
@@ -1,3 +1,14 @@
+2021-11-12 Said Abou-Hallawa <[email protected]>
+
+ REGRESSION(r285481): Infinite recursion with cyclic filter reference
+ https://bugs.webkit.org/show_bug.cgi?id=232972
+ rdar://85264240
+
+ Reviewed by Wenson Hsieh.
+
+ * svg/filters/feImage-cyclic-reference-expected.txt: Added.
+ * svg/filters/feImage-cyclic-reference.svg: Added.
+
2021-11-12 Rob Buis <[email protected]>
Null check m_spanElement
Added: trunk/LayoutTests/svg/filters/feImage-cyclic-reference-expected.txt (0 => 285769)
--- trunk/LayoutTests/svg/filters/feImage-cyclic-reference-expected.txt (rev 0)
+++ trunk/LayoutTests/svg/filters/feImage-cyclic-reference-expected.txt 2021-11-13 02:12:05 UTC (rev 285769)
@@ -0,0 +1 @@
+This test passes if it does not crash.
Added: trunk/LayoutTests/svg/filters/feImage-cyclic-reference.svg (0 => 285769)
--- trunk/LayoutTests/svg/filters/feImage-cyclic-reference.svg (rev 0)
+++ trunk/LayoutTests/svg/filters/feImage-cyclic-reference.svg 2021-11-13 02:12:05 UTC (rev 285769)
@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg">
+ <filter id="filter">
+ <feImage href=""
+ </filter>
+ <rect x="10" y="10" width="100" height="100" filter="url(#filter)"/>
+ <text x="10" y="120">This test passes if it does not crash.</text>
+ <script>
+ if (window.testRunner)
+ testRunner.dumpAsText(true);
+ </script>
+</svg>
Modified: trunk/Source/WebCore/ChangeLog (285768 => 285769)
--- trunk/Source/WebCore/ChangeLog 2021-11-13 01:23:27 UTC (rev 285768)
+++ trunk/Source/WebCore/ChangeLog 2021-11-13 02:12:05 UTC (rev 285769)
@@ -1,3 +1,27 @@
+2021-11-12 Said Abou-Hallawa <[email protected]>
+
+ REGRESSION(r285481): Infinite recursion with cyclic filter reference
+ https://bugs.webkit.org/show_bug.cgi?id=232972
+ rdar://85264240
+
+ Reviewed by Wenson Hsieh.
+
+ Before r285481, we were creating the ImageBuffer of the referenced SVGElement
+ for the FEImage through RenderSVGResourceFilter::postApplyResource(). Now
+ we create this ImageBuffer through RenderSVGResourceFilter::applyResource().
+ The difference is at the end of RenderSVGResourceFilter::applyResource()
+ we add an entry to m_rendererFilterDataMap. This entry was preventing
+ trying to rebuild the SVGFilter for the same renderer if there is a
+ cyclic reference.
+
+ The fix is to add the entry in m_rendererFilterDataMap before creating the
+ SVGFilter. If an error happens, this entry will be removed before returning.
+
+ Test: svg/filters/feImage-cyclic-reference.svg
+
+ * rendering/svg/RenderSVGResourceFilter.cpp:
+ (WebCore::RenderSVGResourceFilter::applyResource):
+
2021-11-12 Rob Buis <[email protected]>
Null check m_spanElement
Modified: trunk/Source/WebCore/rendering/svg/RenderSVGResourceFilter.cpp (285768 => 285769)
--- trunk/Source/WebCore/rendering/svg/RenderSVGResourceFilter.cpp 2021-11-13 01:23:27 UTC (rev 285768)
+++ trunk/Source/WebCore/rendering/svg/RenderSVGResourceFilter.cpp 2021-11-13 02:12:05 UTC (rev 285769)
@@ -96,17 +96,23 @@
return false; // Already built, or we're in a cycle, or we're marked for removal. Regardless, just do nothing more now.
}
- auto filterData = makeUnique<FilterData>();
+ auto addResult = m_rendererFilterDataMap.set(&renderer, makeUnique<FilterData>());
+ auto filterData = addResult.iterator->value.get();
+
FloatRect targetBoundingBox = renderer.objectBoundingBox();
filterData->boundaries = SVGLengthContext::resolveRectangle<SVGFilterElement>(&filterElement(), filterElement().filterUnits(), targetBoundingBox);
- if (filterData->boundaries.isEmpty())
+ if (filterData->boundaries.isEmpty()) {
+ m_rendererFilterDataMap.remove(&renderer);
return false;
+ }
// Determine absolute transformation matrix for filter.
AffineTransform absoluteTransform = SVGRenderingContext::calculateTransformationToOutermostCoordinateSystem(renderer);
- if (!absoluteTransform.isInvertible())
+ if (!absoluteTransform.isInvertible()) {
+ m_rendererFilterDataMap.remove(&renderer);
return false;
+ }
// Eliminate shear of the absolute transformation matrix, to be able to produce unsheared tile images for feTile.
FloatSize filterScale(absoluteTransform.xScale(), absoluteTransform.yScale());
@@ -123,8 +129,10 @@
// Create the SVGFilter object.
filterData->builder = makeUnique<SVGFilterBuilder>();
filterData->filter = SVGFilter::create(filterElement(), *filterData->builder, filterScale, absoluteDrawingRegion, filterData->boundaries, targetBoundingBox);
- if (!filterData->filter)
+ if (!filterData->filter) {
+ m_rendererFilterDataMap.remove(&renderer);
return false;
+ }
auto lastEffect = filterData->builder->lastEffect();
ASSERT(lastEffect);
@@ -144,9 +152,8 @@
// If the drawingRegion is empty, we have something like <g filter=".."/>.
// Even if the target objectBoundingBox() is empty, we still have to draw the last effect result image in postApplyResource.
if (filterData->drawingRegion.isEmpty()) {
- ASSERT(!m_rendererFilterDataMap.contains(&renderer));
+ ASSERT(m_rendererFilterDataMap.contains(&renderer));
filterData->savedContext = context;
- m_rendererFilterDataMap.set(&renderer, WTFMove(filterData));
return false;
}
@@ -161,9 +168,8 @@
#endif
auto sourceGraphic = SVGRenderingContext::createImageBuffer(filterData->drawingRegion, effectiveTransform, colorSpace, renderingMode, context);
if (!sourceGraphic) {
- ASSERT(!m_rendererFilterDataMap.contains(&renderer));
+ ASSERT(m_rendererFilterDataMap.contains(&renderer));
filterData->savedContext = context;
- m_rendererFilterDataMap.set(&renderer, WTFMove(filterData));
return false;
}
@@ -177,9 +183,7 @@
context = &sourceGraphicContext;
- ASSERT(!m_rendererFilterDataMap.contains(&renderer));
- m_rendererFilterDataMap.set(&renderer, WTFMove(filterData));
-
+ ASSERT(m_rendererFilterDataMap.contains(&renderer));
return true;
}
