[Webkit-unassigned] [Bug 89318] New: REGRESSION (r120548): hidpi tests are asserting after r120548

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=89318

           Summary: REGRESSION (r120548): hidpi tests are asserting after
                    r120548
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: simon.fraser at apple.com
                CC: bdakin at apple.com, abarth at webkit.org,
                    timothy_horton at apple.com


Lots of crashes on the WK2 bot after r120548
http://trac.webkit.org/changeset/120548

02:01:59.920 91387   ASSERTION FAILED: bitmap->size() == updateSize
02:01:59.920 91387   /Volumes/Data/slave/lion-debug/build/Source/WebKit2/UIProcess/BackingStore.cpp(64) : void WebKit::BackingStore::incorporateUpdate(const WebKit::UpdateInfo &)
02:01:59.920 91387   1   0x10384bb37 WebKit::BackingStore::incorporateUpdate(WebKit::UpdateInfo const&)
02:01:59.920 91387   2   0x103885650 WebKit::DrawingAreaProxyImpl::incorporateUpdate(WebKit::UpdateInfo const&)
02:01:59.920 91387   3   0x103885504 WebKit::DrawingAreaProxyImpl::update(unsigned long long, WebKit::UpdateInfo const&)
02:01:59.920 91387   4   0x103887d18 void CoreIPC::callMemberFunction<WebKit::DrawingAreaProxy, void (WebKit::DrawingAreaProxy::*)(unsigned long long, WebKit::UpdateInfo const&), unsigned long long, WebKit::UpdateInfo>(CoreIPC::Arguments2<unsigned long long, WebKit::UpdateInfo> const&, WebKit::DrawingAreaProxy*, void (WebKit::DrawingAreaProxy::*)(unsigned long long, WebKit::UpdateInfo const&))
02:01:59.921 91387   5   0x1038875a1 void CoreIPC::handleMessage<Messages::DrawingAreaProxy::Update, WebKit::DrawingAreaProxy, void (WebKit::DrawingAreaProxy::*)(unsigned long long, WebKit::UpdateInfo const&)>(CoreIPC::ArgumentDecoder*, WebKit::DrawingAreaProxy*, void (WebKit::DrawingAreaProxy::*)(unsigned long long, WebKit::UpdateInfo const&))
02:01:59.921 91387   6   0x103887340 WebKit::DrawingAreaProxy::didReceiveDrawingAreaProxyMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*)
02:01:59.921 91387   7   0x103a7f8a3 WebKit::WebPageProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*)
02:01:59.921 91387   8   0x103b14226 WebKit::WebProcessProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*)
02:01:59.921 91387   9   0x1039a9227 WebKit::WebConnectionToWebProcess::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*)
02:01:59.921 91387   10  0x1039a926d non-virtual thunk to WebKit::WebConnectionToWebProcess::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*)
02:01:59.921 91387   11  0x10385ee9c CoreIPC::Connection::dispatchMessage(CoreIPC::Connection::Message<CoreIPC::ArgumentDecoder>&)
02:01:59.921 91387   12  0x103861589 CoreIPC::Connection::dispatchOneMessage()
02:01:59.921 91387   13  0x103868090 WTF::FunctionWrapper<void (CoreIPC::Connection::*)()>::operator()(CoreIPC::Connection*)
02:01:59.921 91387   14  0x103868015 WTF::BoundFunctionImpl<WTF::FunctionWrapper<void (CoreIPC::Connection::*)()>, void ()(CoreIPC::Connection*)>::operator()()
02:01:59.921 91387   15  0x106e4ab15 WTF::Function<void ()()>::operator()() const
02:01:59.922 91387   16  0x106e4a8a7 WebCore::RunLoop::performWork()
02:01:59.922 91387   17  0x106e4bb9e WebCore::RunLoop::performWork(void*)
02:01:59.922 91387   18  0x7fff821c86e1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
02:01:59.922 91387   19  0x7fff821c7f4d __CFRunLoopDoSources0
02:01:59.922 91387   20  0x7fff821eed39 __CFRunLoopRun
02:01:59.922 91387   21  0x7fff821ee676 CFRunLoopRunSpecific
02:01:59.922 91387   22  0x7fff87835f9f -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
02:01:59.922 91387   23  0x10380481c WTR::TestController::platformRunUntil(bool&, double)
02:01:59.922 91387   24  0x1038000f5 WTR::TestController::runUntil(bool&, WTR::TestController::TimeoutDuration)
02:01:59.922 91387   25  0x1038056d4 WTR::TestInvocation::invoke()
02:01:59.923 91387   26  0x10380079e WTR::TestController::runTest(char const*)
02:01:59.923 91387   27  0x1038008a2 WTR::TestController::runTestingServerLoop()
02:01:59.923 91387   28  0x1037feec0 WTR::TestController::run()
02:01:59.923 91387   29  0x1037fdbd2 WTR::TestController::TestController(int, char const**)
02:01:59.923 91387   30  0x1037fd963 WTR::TestController::TestController(int, char const**)
02:01:59.923 91387   31  0x1037fb47f main

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