[Webkit-unassigned] [Bug 188060] New: This SVG file causes a web content hang

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188060

            Bug ID: 188060
           Summary: This SVG file causes a web content hang
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: zimmermann at kde.org

Created attachment 345849

  --> https://bugs.webkit.org/attachment.cgi?id=345849&action=review

Testcase (hangs!)

The attached file causes a webcontent hang.

Lots of CPU time under:

       2035 WebCore::RenderLineBoxList::paint(WebCore::RenderBoxModelObject*, WebCore::PaintInfo&, WebCore::LayoutPoint const&) const  (in WebCore) + 870  [0x108234cf6]
         2035 WebCore::SVGRootInlineBox::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&, WebCore::LayoutUnit, WebCore::LayoutUnit)  (in WebCore) + 276  [0x1083a8bf4]
           1990 WebCore::SVGInlineFlowBox::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&, WebCore::LayoutUnit, WebCore::LayoutUnit)  (in WebCore) + 100  [0x1095f29a4]
           ! 1989 WebCore::SVGInlineTextBox::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&, WebCore::LayoutUnit, WebCore::LayoutUnit)  (in WebCore) + 865  [0x1083a9021]
           ! : 1989 WebCore::SVGInlineTextBox::paintText(WebCore::GraphicsContext&, WebCore::RenderStyle const&, WebCore::RenderStyle const&, WebCore::SVGTextFragment const&, bool, bool)  (in WebCore) + 469  [0x1095f7295]
           ! :   1947 WebCore::SVGInlineTextBox::paintTextWithShadows(WebCore::GraphicsContext&, WebCore::RenderStyle const&, WebCore::TextRun&, WebCore::SVGTextFragment const&, unsigned int, unsigned int)  (in WebCore) + 481  [0x1095f78b1]
           ! :   | 1931 WebCore::RenderSVGResourceGradient::postApplyResource(WebCore::RenderElement&, WebCore::GraphicsContext*&, WTF::OptionSet<WebCore::RenderSVGResourceMode>, WebCore::Path const*, WebCore::RenderSVGShape const*)  (in WebCore) + 685  [0x1095e451d]
           ! :   | + 1931 WebCore::ImageBufferData::~ImageBufferData()  (in WebCore) + 99  [0x1093b06e3]
           ! :   | +   1931 WebCore::GraphicsContext::~GraphicsContext()  (in WebCore) + 18  [0x109367042]
           ! :   | +     1931 WebCore::GraphicsContext::platformDestroy()  (in WebCore) + 34  [0x1081dbee2]


and huge memory use (> 1GB).

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