119623 2013-08-09 05:34:48 -0700 ASSERTION FAILED: stroke->opacity != other->stroke->opacity in WebCore::SVGRenderStyle::diff 2013-08-09 16:29:54 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) PC Linux RESOLVED FIXED P2 Normal --- 116980 1 rhodovan.u-szeged rwlbuis commit-queue esprehn+autocc glenn kling kondapallykalyan krit rwlbuis sam zimmermann oldest_to_newest 915772 0 rhodovan.u-szeged 2013-08-09 05:34:48 -0700 The following test crashes: <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <text> <tspan stroke="#666"> <a xlink:href="#foo"> <animate attributename="stroke"></animate> </tspan> </text> </svg> The backtrace: Program received signal SIGSEGV, Segmentation fault. 0x00007ffff56f53e4 in WTFCrash () at /home/reni/Data/REPOS/webkit_sec/Source/WTF/wtf/Assertions.cpp:342 342 *(int *)(uintptr_t)0xbbadbeef = 0; (gdb) bt #0 0x00007ffff56f53e4 in WTFCrash () at /home/reni/Data/REPOS/webkit_sec/Source/WTF/wtf/Assertions.cpp:342 #1 0x00007ffff4ba3754 in WebCore::SVGRenderStyle::diff (this=0x8bf0b0, other=0x727520) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/style/SVGRenderStyle.cpp:190 #2 0x00007ffff4a034a9 in WebCore::RenderStyle::diff (this=0x8bf040, other=0x72be10, changedContextSensitiveProperties=@0x7fffffffc554: 0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/style/RenderStyle.cpp:759 #3 0x00007ffff49740eb in WebCore::RenderObject::setStyle (this=0x8baa28, style=...) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderObject.cpp:1838 #4 0x00007ffff4973ad3 in WebCore::RenderObject::setAnimatableStyle (this=0x8baa28, style=...) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/rendering/RenderObject.cpp:1730 #5 0x00007ffff4a29efa in WebCore::Style::resolveLocal (current=0x8be9d0, inheritedChange=WebCore::Style::NoChange) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/style/StyleResolveTree.cpp:156 #6 0x00007ffff4a2a3aa in WebCore::Style::resolveTree (current=0x8be9d0, change=WebCore::Style::NoChange) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/style/StyleResolveTree.cpp:234 #7 0x00007ffff4a2a582 in WebCore::Style::resolveTree (current=0x8bad00, change=WebCore::Style::NoChange) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/style/StyleResolveTree.cpp:268 #8 0x00007ffff4a2a582 in WebCore::Style::resolveTree (current=0x89aaa0, change=WebCore::Style::NoChange) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/style/StyleResolveTree.cpp:268 #9 0x00007ffff4a2a582 in WebCore::Style::resolveTree (current=0x744d30, change=WebCore::Style::NoChange) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/style/StyleResolveTree.cpp:268 #10 0x00007ffff4a2a582 in WebCore::Style::resolveTree (current=0x87f2d0, change=WebCore::Style::NoChange) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/style/StyleResolveTree.cpp:268 #11 0x00007ffff4a2a582 in WebCore::Style::resolveTree (current=0x7754e0, change=WebCore::Style::NoChange) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/style/StyleResolveTree.cpp:268 #12 0x00007ffff41b097d in WebCore::Document::recalcStyle (this=0x87c980, change=WebCore::Style::NoChange) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/dom/Document.cpp:1804 #13 0x00007ffff41b0cd5 in WebCore::Document::updateStyleIfNeeded (this=0x87c980) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/dom/Document.cpp:1856 #14 0x00007ffff401440c in WebCore::ComputedStyleExtractor::propertyValue (this=0x7fffffffcdb0, propertyID=WebCore::CSSPropertyStroke, updateLayout=WebCore::UpdateLayout) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/css/CSSComputedStyleDeclaration.cpp:1681 #15 0x00007ffff4c5e3a8 in WebCore::SVGAnimationElement::computeCSSPropertyValue (this=0x8b7bc0, element=0x8be9d0, id=WebCore::CSSPropertyStroke, valueString=...) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGAnimationElement.cpp:642 #16 0x00007ffff4c570f3 in WebCore::SVGAnimateElement::resetAnimatedType (this=0x8b7bc0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/SVGAnimateElement.cpp:233 #17 0x00007ffff4c09a48 in WebCore::SVGSMILElement::progress (this=0x8b7bc0, elapsed=..., resultElement=0x8b7bc0, seekToTime=false) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/animation/SVGSMILElement.cpp:1107 #18 0x00007ffff4bffc4d in WebCore::SMILTimeContainer::updateAnimations (this=0x893cb0, elapsed=..., seekToTime=false) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/animation/SMILTimeContainer.cpp:293 #19 0x00007ffff4bff717 in WebCore::SMILTimeContainer::timerFired (this=0x893cb0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/svg/animation/SMILTimeContainer.cpp:219 #20 0x00007ffff4c03ae7 in WebCore::Timer<WebCore::SMILTimeContainer>::fired (this=0x893ce0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/Timer.h:114 #21 0x00007ffff47b2724 in WebCore::ThreadTimers::sharedTimerFiredInternal (this=0x6e44b0) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/ThreadTimers.cpp:129 #22 0x00007ffff47b2611 in WebCore::ThreadTimers::sharedTimerFired () at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/ThreadTimers.cpp:105 #23 0x00007ffff4aac8e8 in WebCore::SharedTimerQt::timerEvent (this=0x6e44e0, ev=0x7fffffffd700) at /home/reni/Data/REPOS/webkit_sec/Source/WebCore/platform/qt/SharedTimerQt.cpp:113 #24 0x00007ffff221266c in QObject::event(QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5 #25 0x00007ffff3058dbc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Widgets.so.5 #26 0x00007ffff305c075 in QApplication::notify(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Widgets.so.5 #27 0x00007ffff21ecdbe in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5 #28 0x00007ffff223375c in QTimerInfoList::activateTimers() () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5 #29 0x00007ffff2234094 in ?? () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5 #30 0x00007fffee3790a6 in g_main_dispatch (context=0x6632f0) at /build/buildd/glib2.0-2.37.3/./glib/gmain.c:3058 #31 g_main_context_dispatch (context=context@entry=0x6632f0) at /build/buildd/glib2.0-2.37.3/./glib/gmain.c:3634 ---Type <return> to continue, or q <return> to quit--- #32 0x00007fffee3793f8 in g_main_context_iterate (context=context@entry=0x6632f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.3/./glib/gmain.c:3705 #33 0x00007fffee37949c in g_main_context_iteration (context=0x6632f0, may_block=1) at /build/buildd/glib2.0-2.37.3/./glib/gmain.c:3766 #34 0x00007ffff22344bc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5 #35 0x00007ffff21ebd3b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5 #36 0x00007ffff21ef120 in QCoreApplication::exec() () from /usr/local/Trolltech/Qt5/Qt-5.0.0-r40/lib/libQt5Core.so.5 #37 0x0000000000421ba0 in launcherMain (app=...) at /home/reni/Data/REPOS/webkit_sec/Tools/QtTestBrowser/qttestbrowser.cpp:49 #38 0x0000000000423680 in main (argc=2, argv=0x7fffffffdc68) at /home/reni/Data/REPOS/webkit_sec/Tools/QtTestBrowser/qttestbrowser.cpp:318 915773 1 208420 rhodovan.u-szeged 2013-08-09 05:36:50 -0700 Created attachment 208420 Test case (extension needs to be .html) 915854 2 208439 rwlbuis 2013-08-09 09:42:10 -0700 Created attachment 208439 Patch 915883 3 kling 2013-08-09 11:31:27 -0700 Is this the right thing to be doing? I always figured RenderStyle::diff() skipped checking the non-SVG visited link stuff for security reasons. 915904 4 kling 2013-08-09 12:04:01 -0700 (In reply to comment #3) > Is this the right thing to be doing? I always figured RenderStyle::diff() skipped checking the non-SVG visited link stuff for security reasons. (Disclaimer: I might be talking out of my backside here.) 915908 5 krit 2013-08-09 12:13:47 -0700 (In reply to comment #4) > (In reply to comment #3) > > Is this the right thing to be doing? I always figured RenderStyle::diff() skipped checking the non-SVG visited link stuff for security reasons. > > (Disclaimer: I might be talking out of my backside here.) For visiti(In reply to comment #3) > Is this the right thing to be doing? I always figured RenderStyle::diff() skipped checking the non-SVG visited link stuff for security reasons. Is RenderStyle::diff taken into account for privacy checking? (visited link and so on?). Just curious. stroke-* and dash-array-* properties can not be used for styling on :visitied selector. 915909 6 208439 krit 2013-08-09 12:14:55 -0700 Comment on attachment 208439 Patch r=me 915975 7 208439 pdr 2013-08-09 15:52:50 -0700 Comment on attachment 208439 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=208439&action=review This looks good to me too in terms of security (post wkbug.com/119492) > LayoutTests/svg/animations/animate-stroke-crasher.html:1 > +<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> Please add <!DOCTYPE HTML> and such to make this valid. > LayoutTests/svg/animations/animate-stroke-crasher.html:8 > + <animate attributename="stroke"></animate> Missing </a> 915985 8 rwlbuis 2013-08-09 16:29:54 -0700 Committed r153914: <http://trac.webkit.org/changeset/153914> 208420 2013-08-09 05:36:50 -0700 2013-08-09 05:36:50 -0700 Test case (extension needs to be .html) lastCrash.html text/html 235 rhodovan.u-szeged 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