[Webkit-unassigned] [Bug 92660] New: [chromium] Layout tests svg-filters.html and alpha.html are crashing intermittently

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=92660

           Summary: [chromium] Layout tests svg-filters.html and
                    alpha.html are crashing intermittently
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: MathML
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: senorblanco at chromium.org
                CC: eric at webkit.org, jamesr at chromium.org,
                    alokp at chromium.org, enne at google.com


platform/chromium/compositing/accelerated-drawing/svg-filters.html
platform/chromium/compositing/accelerated-drawing/alpha.html

are crashing intermittently on all platforms due to an assert.  This looks to have been exposed by:

http://trac.webkit.org/changeset/123987

which passes through the acceleratePainting flag to settings.  Sample Linux crash stack:

crash log for DumpRenderTree (pid 6766):
STDOUT: <empty>
STDERR: [6766:6766:915311230:ERROR:gles2_cmd_decoder.cc(5109)] GL ERROR :GL_INVALID_OPERATION : glFramebufferTexture2D: unknown texture
STDERR:     base::debug::StackTrace::StackTrace() [0x82d82a8]
STDERR:     base::(anonymous namespace)::StackDumpSignalHandler() [0x82c17bd]
STDERR:     0xb773d400
STDERR:     WebCore::FrameBufferSkPictureCanvasLayerTextureUpdater::updateTextureRect() [0x88caa79]
STDERR:     WebCore::FrameBufferSkPictureCanvasLayerTextureUpdater::Texture::updateRect() [0x88cae62]
STDERR:     WebCore::(anonymous namespace)::UnthrottledTextureUploader::uploadTexture() [0x89088d4]
STDERR:     WebCore::CCTextureUpdater::update() [0x88fe628]
STDERR:     WebCore::CCSingleThreadProxy::doCommit() [0x88fcf1d]
STDERR:     WebCore::CCSingleThreadProxy::commitAndComposite() [0x88fcfcc]
STDERR:     WebCore::CCSingleThreadProxy::compositeAndReadback() [0x88fd48f]
STDERR:     WebCore::CCLayerTreeHost::compositeAndReadback() [0x88db3d4]
STDERR:     WebKit::WebLayerTreeView::compositeAndReadback() [0x8104c1b]
STDERR:     WebKit::WebViewImpl::doPixelReadbackToCanvas() [0x80c61a8]
STDERR:     WebKit::WebViewImpl::paint() [0x80c65aa]
STDERR:     WebViewHost::paintRect() [0x8089750]
STDERR:     WebViewHost::paintInvalidatedRegion() [0x80898b1]
STDERR:     TestShell::dump() [0x80852d6]
STDERR:     TestShell::testFinished() [0x80858c9]
STDERR:     LayoutTestController::WorkQueue::processWorkSoon() [0x8066a65]
STDERR:     WebViewHost::locationChangeDone() [0x808a0e8]
STDERR:     WebKit::FrameLoaderClientImpl::dispatchDidFinishLoad() [0x80ef741]
STDERR:     WebCore::FrameLoader::checkLoadCompleteForThisFrame() [0x8b68dfd]
STDERR:     WebCore::FrameLoader::checkLoadComplete() [0x8b68fd9]
STDERR:     WebCore::DocumentLoader::finishedLoading() [0x8b51822]
STDERR:     WebCore::MainResourceLoader::didFinishLoading() [0x8b79399]
STDERR:     WebCore::ResourceLoader::didFinishLoading() [0x8b8e166]
STDERR:     WebCore::ResourceHandleInternal::didFinishLoading() [0x9817dab]
STDERR:     webkit_glue::WebURLLoaderImpl::Context::OnCompletedRequest() [0x92f872e]
STDERR:     (anonymous namespace)::RequestProxy::NotifyCompletedRequest() [0x93983f6]
STDERR:     base::internal::Invoker<>::Run() [0x939860b]
STDERR:     MessageLoop::RunTask() [0x82b5080]
STDERR:     MessageLoop::DeferOrRunPendingTask() [0x82b5722]
STDERR:     MessageLoop::DoWork() [0x82b5a81]
STDERR:     base::MessagePumpGlib::HandleDispatch() [0x82d2018]
STDERR:     (anonymous namespace)::WorkSourceDispatch() [0x82d2057]
STDERR:     0xb75325e5
STDERR:     0xb75362d8
STDERR:     0xb75364b8
STDERR:     base::MessagePumpGlib::RunWithDispatcher() [0x82d24e9]
STDERR:     base::MessagePumpGlib::Run() [0x82d207e]
STDERR:     MessageLoop::RunInternal() [0x82b043e]
STDERR:     base::RunLoop::Run() [0x82c1a69]
STDERR:     MessageLoop::Run() [0x82af60e]
STDERR:     webkit_support::RunMessageLoop() [0x81cbff7]
STDERR:     TestShell::waitTestFinished() [0x8085999]
STDERR:     TestShell::runFileTest() [0x8083f9f]
STDERR:     runTest() [0x805d3f3]
STDERR:     main [0x805d9d3]
STDERR:     0xb6a3abd6
STDERR:     0x805c561

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