[Webkit-unassigned] [Bug 94345] New: [Qt][WK2] Accelerated compositing example with links being animated crashes tap highlight

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=94345

           Summary: [Qt][WK2] Accelerated compositing example with links
                    being animated crashes tap highlight
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: Qt, QtTriaged
          Severity: Normal
          Priority: P2
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jesus at webkit.org
                CC: luciano.wolf at openbossa.org, abecsi at webkit.org,
                    jocelyn.turcotte at nokia.com, cmarcelo at webkit.org,
                    marcelo.lira at openbossa.org


Created an attachment (id=159115)
 --> (https://bugs.webkit.org/attachment.cgi?id=159115&action=review)
Falling leaves example modified to one link per leaf

The attached modified version of the classical falling leaves (http://www.webkit.org/blog-files/leaves/) makes each leaf become a link to another web page.

It crashes MiniBrowser and snowshoe on tap highlight code path. I believe the UIProcess is sending the position of where the highlight should be, but since the link element is being animated the position has changed when this information reaches the other process.

#0  0x00007f1a72d8ecad in WebCore::RenderObject::offsetFromAncestorContainer (this=0x1c4f008, container=0x1a3b4b8) at /home/jeez/code/webkit/Source/WebCore/rendering/RenderObject.cpp:2154
#1  0x00007f1a72ad3b23 in WebCore::(anonymous namespace)::absolutePathForRenderer (o=0x1c4f008) at /home/jeez/code/webkit/Source/WebCore/page/GestureTapHighlighter.cpp:205
#2  0x00007f1a72ad3ef1 in WebCore::GestureTapHighlighter::pathForNodeHighlight (node=0x1c856b0) at /home/jeez/code/webkit/Source/WebCore/page/GestureTapHighlighter.cpp:247
#3  0x00007f1a7217f22c in WebKit::TapHighlightController::highlight (this=0x18ff858, node=0x1c856b0)
at /home/jeez/code/webkit/Source/WebKit2/WebProcess/WebPage/TapHighlightController.cpp:60
#4  0x00007f1a72195369 in WebKit::WebPage::highlightPotentialActivation (this=0x18ff420, point=..., area=...) at /home/jeez/code/webkit/Source/WebKit2/WebProcess/WebPage/WebPage.cpp:1565

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