[Webkit-unassigned] [Bug 71196] New: [Qt] [WK2] MiniBrowser assert in QtWebProccess on startup in debug build.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=71196

           Summary: [Qt] [WK2] MiniBrowser assert in QtWebProccess on
                    startup in debug build.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: Qt
          Severity: Normal
          Priority: P3
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ostapenko.viatcheslav at nokia.com


Assert in DrawingAreaImpl::exitAcceleratedCompositingMode()

ASSERT(!m_layerTreeStateIsFrozen);

Call stack:
0    WebKit::DrawingAreaImpl::exitAcceleratedCompositingMode    DrawingAreaImpl.cpp    470    0xb5fd7ad4    
1    WebKit::DrawingAreaImpl::setRootCompositingLayer    DrawingAreaImpl.cpp    298    0xb5fd7111    
2    WebKit::WebPage::exitAcceleratedCompositingMode    WebPage.cpp    468    0xb5ed1396    
3    WebKit::WebChromeClient::attachRootGraphicsLayer    WebChromeClient.cpp    684    0xb5fb8aff    
4    WebCore::RenderLayerCompositor::detachRootLayer    RenderLayerCompositor.cpp    1899    0xb66dcc37    
5    WebCore::RenderLayerCompositor::destroyRootLayer    RenderLayerCompositor.cpp    1808    0xb66dc63c    
6    WebCore::RenderLayerCompositor::enableCompositingMode    RenderLayerCompositor.cpp    129    0xb66d6eb0    
7    WebCore::RenderLayerCompositor::computeCompositingRequirements    RenderLayerCompositor.cpp    791    0xb66d9198    
8    WebCore::RenderLayerCompositor::updateCompositingLayers    RenderLayerCompositor.cpp    304    0xb66d7626    
9    WebCore::FrameView::updateCompositingLayers    FrameView.cpp    643    0xb650eac8    
10    WebCore::FrameView::layout    FrameView.cpp    1127    0xb650ffb0    
11    WebCore::FrameView::visibleContentsResized    FrameView.cpp    1802    0xb65124be    
12    WebCore::ScrollView::updateScrollbars    ScrollView.cpp    516    0xb65c6168    
13    WebCore::ScrollView::setFrameRect    ScrollView.cpp    863    0xb65c7a32    
14    WebCore::FrameView::setFrameRect    FrameView.cpp    406    0xb650df67    
15    WebCore::Widget::resize    Widget.h    143    0xb5d7d9d6    
16    WebKit::WebPage::setSize    WebPage.cpp    687    0xb5ed2917    
17    WebKit::DrawingAreaImpl::updateBackingStoreState    DrawingAreaImpl.cpp    328    0xb5fd72ac    
18    CoreIPC::callMemberFunction<WebKit::DrawingArea, void (WebKit::DrawingArea::*)(unsigned long long, bool, float, WebCore::IntSize const&, WebCore::IntSize const&), unsigned long long, bool, float, WebCore::IntSize, WebCore::IntSize>    HandleMessage.h    43    0xb5efa40e    
19    CoreIPC::handleMessage<Messages::DrawingArea::UpdateBackingStoreState, WebKit::DrawingArea, void (WebKit::DrawingArea::*)(unsigned long long, bool, float, WebCore::IntSize const&, WebCore::IntSize const&)>    HandleMessage.h    277    0xb5efa059    
20    WebKit::DrawingArea::didReceiveDrawingAreaMessage    DrawingAreaMessageReceiver.cpp    47    0xb5ef9db6    
21    WebKit::WebPage::didReceiveMessage    WebPage.cpp    2205    0xb5ed856c    
22    WebKit::WebProcess::didReceiveMessage    WebProcess.cpp    658    0xb5eea5a1    
23    CoreIPC::Connection::dispatchMessage    Connection.cpp    689    0xb5f1ed76    
24    CoreIPC::Connection::dispatchMessages    Connection.cpp    716    0xb5f1ef1f    
25    MemberFunctionWorkItem0<CoreIPC::Connection>::execute    WorkItem.h    79    0xb5f276af    
26    RunLoop::performWork    RunLoop.cpp    63    0xb5e04499    
27    RunLoop::TimerObject::performWork    RunLoopQt.cpp    49    0xb5e0549c    
28    RunLoop::TimerObject::qt_static_metacall    RunLoopQt.moc    48    0xb5e05eca    
29    QMetaCallEvent::placeMetaCall    qobject.cpp    529    0xb284d6d6    
30    QObject::event    qobject.cpp    1111    0xb284e2f7    
31    QApplicationPrivate::notify_helper    qapplication.cpp    4080    0xb35dc436    
32    QApplication::notify    qapplication.cpp    3497    0xb35d9e37    
33    QCoreApplication::notifyInternal    qcoreapplication.cpp    827    0xb282e10a    
34    QCoreApplication::sendEvent    qcoreapplication.h    205    0xb5d78a35    
35    QCoreApplicationPrivate::sendPostedEvents    qcoreapplication.cpp    1469    0xb282efef    
36    QCoreApplication::sendPostedEvents    qcoreapplication.cpp    1339    0xb282ecab    
37    QCoreApplication::sendPostedEvents    qcoreapplication.h    210    0xb2b3564a    
38    QWindowSystemInterface::sendWindowSystemEvents    qwindowsysteminterface_qpa.cpp    296    0xb2b3542a    
39    QEventDispatcherQPA::processEvents    qeventdispatcher_qpa.cpp    70    0xb09550e8    
40    QEventLoop::processEvents    qeventloop.cpp    149    0xb282bc31    
41    QEventLoop::exec    qeventloop.cpp    225    0xb282be92    
42    QCoreApplication::exec    qcoreapplication.cpp    1094    0xb282e76e    
43    RunLoop::run    RunLoopQt.cpp    65    0xb5e056c9    
44    WebKit::WebProcessMainQt    WebProcessMainQt.cpp    199    0xb5e00e6f    
45    main    MainQt.cpp    38    0x804850f

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