[Webkit-unassigned] [Bug 120284] New: ASSERTION FAILED: m_context->document()->documentElement() != m_context in WebCore::SVGLengthContext::determineViewport

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Aug 26 00:03:44 PDT 2013 

https://bugs.webkit.org/show_bug.cgi?id=120284

           Summary: ASSERTION FAILED:
                    m_context->document()->documentElement() != m_context
                    in WebCore::SVGLengthContext::determineViewport
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: reni at webkit.org
                CC: zimmermann at kde.org
            Blocks: 116980


In this test case SVGLenghtContext is used to resolve the width value of the <svg> element, what causes the assertion check fail:

<svg xmlns="http://www.w3.org/2000/svg">
    <set attributeName="width"></set>
</svg>


Backtrace:


Program received signal SIGSEGV, Segmentation fault.
0x00007ffff56f42bc in WTFCrash () at /home/reni/Data/REPOS/webkit_sec/Source/WTF/wtf/Assertions.cpp:342
342        *(int *)(uintptr_t)0xbbadbeef = 0;
(gdb) bt
#0  0x00007ffff56f42bc in WTFCrash () at /home/reni/Data/REPOS/webkit_sec/Source/WTF/wtf/Assertions.cpp:342
#1  0x00007ffff4cba25a in WebCore::SVGLengthContext::determineViewport (this=0x7fffffffc610, width=@0x7fffffffc4c8: 0, height=@0x7fffffffc4cc: 0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGLengthContext.cpp:298
#2  0x00007ffff4cb9e03 in WebCore::SVGLengthContext::convertValueFromPercentageToUserUnits (this=0x7fffffffc610, value=1, mode=WebCore::LengthModeWidth, 
    ec=@0x7fffffffc570: 0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGLengthContext.cpp:189
#3  0x00007ffff4cb993b in WebCore::SVGLengthContext::convertValueToUserUnits (this=0x7fffffffc610, value=100, mode=WebCore::LengthModeWidth, 
    fromUnit=WebCore::LengthTypePercentage, ec=@0x7fffffffc570: 0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGLengthContext.cpp:110
#4  0x00007ffff4cb6ef1 in WebCore::SVGLength::value (this=0x9e9060, context=..., ec=@0x7fffffffc570: 0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGLength.cpp:194
#5  0x00007ffff4cb6e89 in WebCore::SVGLength::value (this=0x9e9060, context=...) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGLength.cpp:189
#6  0x00007ffff4c3b1dc in WebCore::SVGAnimatedLengthAnimator::calculateAnimatedValue (this=0x790110, percentage=1, repeatCount=0, from=0x9ea970, to=0x793be0, 
    toAtEndOfDuration=0x793be0, animated=0x791da0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGAnimatedLength.cpp:105
#7  0x00007ffff4c54e30 in WebCore::SVGAnimateElement::calculateAnimatedValue (this=0xa0c840, percentage=1, repeatCount=0, resultElement=0xa0c840)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGAnimateElement.cpp:141
#8  0x00007ffff4c5c78a in WebCore::SVGAnimationElement::updateAnimation (this=0xa0c840, percent=0, repeatCount=0, resultElement=0xa0c840)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGAnimationElement.cpp:632
#9  0x00007ffff4c07d33 in WebCore::SVGSMILElement::progress (this=0xa0c840, elapsed=..., resultElement=0xa0c840, seekToTime=false)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/animation/SVGSMILElement.cpp:1113
#10 0x00007ffff4bfdeeb in WebCore::SMILTimeContainer::updateAnimations (this=0x9e5110, elapsed=..., seekToTime=false)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/animation/SMILTimeContainer.cpp:293
#11 0x00007ffff4bfd3e5 in WebCore::SMILTimeContainer::begin (this=0x9e5110)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/animation/SMILTimeContainer.cpp:139
#12 0x00007ffff4c22d1b in WebCore::SVGDocumentExtensions::startAnimations (this=0x9e7160)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGDocumentExtensions.cpp:102
#13 0x00007ffff41af868 in WebCore::Document::implicitClose (this=0x9e0010) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/dom/Document.cpp:2442
#14 0x00007ffff45af90d in WebCore::FrameLoader::checkCallImplicitClose (this=0x7d1878)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/FrameLoader.cpp:850
#15 0x00007ffff45af67e in WebCore::FrameLoader::checkCompleted (this=0x7d1878) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/FrameLoader.cpp:793
#16 0x00007ffff45af3b3 in WebCore::FrameLoader::finishedParsing (this=0x7d1878) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/FrameLoader.cpp:726
#17 0x00007ffff41b67d9 in WebCore::Document::finishedParsing (this=0x9e0010) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/dom/Document.cpp:4393
#18 0x00007ffff4a595a6 in WebCore::XMLDocumentParser::end (this=0x78fc90)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/xml/parser/XMLDocumentParser.cpp:216
#19 0x00007ffff4a595e2 in WebCore::XMLDocumentParser::finish (this=0x78fc90)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/xml/parser/XMLDocumentParser.cpp:228
#20 0x00007ffff45a7213 in WebCore::DocumentWriter::end (this=0x693350) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/DocumentWriter.cpp:248
#21 0x00007ffff4599d52 in WebCore::DocumentLoader::finishedLoading (this=0x6932b0, finishTime=0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/DocumentLoader.cpp:402
#22 0x00007ffff4599ac0 in WebCore::DocumentLoader::notifyFinished (this=0x6932b0, resource=0x7b1110)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/DocumentLoader.cpp:344
#23 0x00007ffff4580db6 in WebCore::CachedResource::checkNotify (this=0x7b1110)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/cache/CachedResource.cpp:369
#24 0x00007ffff4580e8c in WebCore::CachedResource::finishLoading (this=0x7b1110)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/cache/CachedResource.cpp:385
#25 0x00007ffff457d5de in WebCore::CachedRawResource::finishLoading (this=0x7b1110, data=0x7bb050)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/cache/CachedRawResource.cpp:94
#26 0x00007ffff45e3c41 in WebCore::SubresourceLoader::didFinishLoading (this=0x7e0100, finishTime=0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/SubresourceLoader.cpp:282
#27 0x00007ffff45da52b in WebCore::ResourceLoader::didFinishLoading (this=0x7e0100, finishTime=0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/loader/ResourceLoader.cpp:488
#28 0x00007ffff4a85729 in WebCore::QNetworkReplyHandler::finish (this=0x7b8ed0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:516
#29 0x00007ffff4a84448 in WebCore::QNetworkReplyHandlerCallQueue::flush (this=0x7b8f08)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:250
#30 0x00007ffff4a84145 in WebCore::QNetworkReplyHandlerCallQueue::push (this=0x7b8f08, 
---Type <return> to continue, or q <return> to quit---
    method=(void (WebCore::QNetworkReplyHandler::*)(WebCore::QNetworkReplyHandler * const)) 0x7ffff4a8556e <WebCore::QNetworkReplyHandler::finish()>)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:216
#31 0x00007ffff4a85092 in WebCore::QNetworkReplyWrapper::didReceiveFinished (this=0x7da4b0)
    at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/network/qt/QNetworkReplyHandler.cpp:409
#32 0x00007ffff4a87a24 in WebCore::QNetworkReplyWrapper::qt_static_metacall (_o=0x7da4b0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fffffffcf10)
    at .moc/release-shared/moc_QNetworkReplyHandler.cpp:176
#33 0x00007ffff220f5cb in QMetaObject::activate(QObject*, int, int, void**) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#34 0x00007ffff221084e in QObject::event(QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#35 0x00007ffff3056dbc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Widgets.so.5
#36 0x00007ffff305a075 in QApplication::notify(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Widgets.so.5
#37 0x00007ffff21eadbe in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#38 0x00007ffff21eca76 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
   from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#39 0x00007ffff2232333 in ?? () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#40 0x00007fffee3732d6 in g_main_dispatch (context=0x6623e0) at /build/buildd/glib2.0-2.37.6/./glib/gmain.c:3065
#41 g_main_context_dispatch (context=context at entry=0x6623e0) at /build/buildd/glib2.0-2.37.6/./glib/gmain.c:3641
#42 0x00007fffee373628 in g_main_context_iterate (context=context at entry=0x6623e0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.37.6/./glib/gmain.c:3712
#43 0x00007fffee3736cc in g_main_context_iteration (context=0x6623e0, may_block=1) at /build/buildd/glib2.0-2.37.6/./glib/gmain.c:3773
#44 0x00007ffff22324bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#45 0x00007ffff21e9d3b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#46 0x00007ffff21ed120 in QCoreApplication::exec() () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5
#47 0x0000000000420e32 in launcherMain (app=...) at /home/reni/Data/REPOS/webkit_sec/Tools/QtTestBrowser/qttestbrowser.cpp:50
#48 0x0000000000422911 in main (argc=2, argv=0x7fffffffdbe8) at /home/reni/Data/REPOS/webkit_sec/Tools/QtTestBrowser/qttestbrowser.cpp:319

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