http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20webkit.org&tests=scrollbars%2Foverflow-scrollbar-combinations.html Blame list: http://trac.webkit.org/log/?verbose=on&rev=142890&stop_rev=142888 e.g. http://build.webkit.org/results/Apple%20MountainLion%20Debug%20WK2%20(Tests)/r142955%20(6830)/scrollbars/overflow-scrollbar-combinations-crash-log.txt No crash log found for WebKitTestRunner:96677. stdout: stderr: ASSERTION FAILED: needsLayout() /Volumes/Data/slave/mountainlion-debug/build/Source/WebCore/rendering/RenderBox.cpp(324) : virtual void WebCore::RenderBox::styleDidChange(WebCore::StyleDifference, const WebCore::RenderStyle *) 1 0x10d654c4a WebCore::RenderBox::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) 2 0x10d5ca6d3 WebCore::RenderBlock::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) 3 0x10d7b94fd WebCore::RenderScrollbarPart::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) 4 0x10d78cf39 WebCore::RenderObject::setStyle(WTF::PassRefPtr<WebCore::RenderStyle>) 5 0x10d7b3d5e WebCore::RenderScrollbar::updateScrollbarPart(WebCore::ScrollbarPart, bool) 6 0x10d7b3ef1 WebCore::RenderScrollbar::updateScrollbarParts(bool) 7 0x10d7b43aa WebCore::RenderScrollbar::styleChanged() 8 0x10d70786c WebCore::RenderLayer::setHasVerticalScrollbar(bool) 9 0x10d714484 WebCore::RenderLayer::updateScrollbarsAfterStyleChange(WebCore::RenderStyle const*) 10 0x10d7149b1 WebCore::RenderLayer::styleChanged(WebCore::StyleDifference, WebCore::RenderStyle const*) 11 0x10d74e33e WebCore::RenderLayerModelObject::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) 12 0x10d654526 WebCore::RenderBox::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) 13 0x10d5ca6d3 WebCore::RenderBlock::styleDidChange(WebCore::StyleDifference, WebCore::RenderStyle const*) 14 0x10d78cf39 WebCore::RenderObject::setStyle(WTF::PassRefPtr<WebCore::RenderStyle>) 15 0x10d78c47a WebCore::RenderObject::setAnimatableStyle(WTF::PassRefPtr<WebCore::RenderStyle>) 16 0x10d4fa0d6 WebCore::NodeRenderingContext::createRendererForElementIfNeeded() 17 0x10c89298d WebCore::Element::createRendererIfNeeded() 18 0x10c8929e5 WebCore::Element::attach() 19 0x10cb198bc WebCore::executeTask(WebCore::HTMLConstructionSiteTask&) 20 0x10cb19746 WebCore::HTMLConstructionSite::executeQueuedTasks() 21 0x10cc01075 WebCore::HTMLTreeBuilder::constructTree(WebCore::AtomicHTMLToken*) 22 0x10cb3a191 WebCore::HTMLDocumentParser::constructTreeFromHTMLToken(WebCore::HTMLToken&) 23 0x10cb39949 WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode) 24 0x10cb39110 WebCore::HTMLDocumentParser::pumpTokenizerIfPossible(WebCore::HTMLDocumentParser::SynchronousMode) 25 0x10cb3a650 WebCore::HTMLDocumentParser::append(WebCore::SegmentedString const&) 26 0x10c644da7 WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter*, char const*, unsigned long) 27 0x10c716963 WebCore::DocumentWriter::addData(char const*, unsigned long) 28 0x10c6dcc87 WebCore::DocumentLoader::commitData(char const*, unsigned long) 29 0x10a012371 WebKit::WebFrameLoaderClient::committedLoad(WebCore::DocumentLoader*, char const*, int) 30 0x10c6dcd60 WebCore::DocumentLoader::commitLoad(char const*, int) 31 0x10c6dd30b WebCore::DocumentLoader::receivedData(char const*, int) ERROR: Failed to send message to real exception port. (ipc/send) invalid destination port (10000003) /Volumes/Data/slave/mountainlion-debug/build/Source/WebKit2/Platform/CoreIPC/mac/ConnectionMac.cpp(461) : void CoreIPC::Connection::exceptionSourceEventHandler() SHOULD NEVER BE REACHED /Volumes/Data/slave/mountainlion-debug/build/Source/WebKit2/Platform/CoreIPC/mac/ConnectionMac.cpp(462) : void CoreIPC::Connection::exceptionSourceEventHandler() 1 0x104e46b65 CoreIPC::Connection::exceptionSourceEventHandler() 2 0x104e3c382 WTF::FunctionWrapper<void (CoreIPC::Connection::*)()>::operator()(CoreIPC::Connection*) 3 0x104e3c305 WTF::BoundFunctionImpl<WTF::FunctionWrapper<void (CoreIPC::Connection::*)()>, void (CoreIPC::Connection*)>::operator()() 4 0x104e47c35 ___ZNK3WTF8FunctionIFvvEEcvU13block_pointerS1_Ev_block_invoke_0 5 0x7fff900220b6 _dispatch_client_callout 6 0x7fff9002429b _dispatch_source_invoke 7 0x7fff90023305 _dispatch_queue_invoke 8 0x7fff90023448 _dispatch_queue_drain 9 0x7fff900232f1 _dispatch_queue_invoke 10 0x7fff900231c3 _dispatch_worker_thread2 11 0x7fff94590cab _pthread_wqthread 12 0x7fff9457b171 start_wqthread
Added a test expectation in http://trac.webkit.org/changeset/142961.
I guess tkent is rolling out this patch. I'll just revert my test expectation change once the rollout is in.