Bug 75817 – REGRESSION(r104327?): media/track/track-cues-cuechange.html and track-cues-enter-exit.html intermittently time out, media/track/track-cues-seeking and fails

• Status: RESOLVED
• Resolution: FIXED
• Component: WebCore Misc.

[Ryosuke Niwa]

It seems like http://trac.webkit.org/changeset/104327/ made the following two tests much more flaky than they used to be:
media/track/track-cues-cuechange.html
media/track/track-cues-enter-exit.html

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=media%2Ftrack%2Ftrack-cues-cuechange.html%2Cmedia%2Ftrack%2Ftrack-cues-enter-exit.html

[Ryosuke Niwa]

Added Chromium test expectations in http://trac.webkit.org/changeset/104426.

[John Knottenbelt]

http://trac.webkit.org/changeset/104327/ also seems to have broken media/track/track-cues-seeking.html . I have asked on the bug https://bugs.webkit.org/show_bug.cgi?id=72555 whether the test needs to be updated (perhaps to wait for all the cues to be added) or whether the patch itself might have a bug.

While we're waiting for an answer I'll add this one to test expectations as well.

[John Knottenbelt]

media/track/track-webvtt-tc026-voice.html is also hitting an assert in chromium debug mac:

ASSERTION FAILED: m_ignoreTrackDisplayUpdate
../html/HTMLMediaElement.h(406) : void WebCore::HTMLMediaElement::endIgnoringTrackDisplayUpdateRequests()
1   0x5343b7a5 WebCore::HTMLMediaElement::endIgnoringTrackDisplayUpdateRequests()
2   0x534304fd WebCore::HTMLMediaElement::textTrackAddCues(WebCore::TextTrack*, WebCore::TextTrackCueList const*)
3   0x5348f807 WebCore::HTMLTrackElement::textTrackAddCues(WebCore::TextTrack*, WebCore::TextTrackCueList const*)
4   0x5348f866 non-virtual thunk to WebCore::HTMLTrackElement::textTrackAddCues(WebCore::TextTrack*, WebCore::TextTrackCueList const*)
5   0x534a7141 WebCore::LoadableTextTrack::newCuesAvailable(WebCore::TextTrackLoader*)
6   0x534a7199 non-virtual thunk to WebCore::LoadableTextTrack::newCuesAvailable(WebCore::TextTrackLoader*)
7   0x53f6a95d WebCore::TextTrackLoader::cueLoadTimerFired(WebCore::Timer<WebCore::TextTrackLoader>*)
8   0x53f6c577 WebCore::Timer<WebCore::TextTrackLoader>::fired()
9   0x535f61ee WebCore::ThreadTimers::sharedTimerFiredInternal()
10  0x535f5f7f WebCore::ThreadTimers::sharedTimerFired()
11  0x5500e919 webkit_glue::WebKitPlatformSupportImpl::DoTimeout()
12  0x5500f467 base::BaseTimer<webkit_glue::WebKitPlatformSupportImpl, false>::TimerTask::Run()
13  0x51dbe104 base::internal::RunnableAdapter<void (base::BaseTimer_Helper::TimerTask::*)()>::Run(base::BaseTimer_Helper::TimerTask*)
14  0x51dbe003 base::internal::InvokeHelper<false, void, base::internal::RunnableAdapter<void (base::BaseTimer_Helper::TimerTask::*)()>, void ()(base::BaseTimer_Helper::TimerTask*)>::MakeItSo(base::internal::RunnableAdapter<void (base::BaseTimer_Helper::TimerTask::*)()>, base::BaseTimer_Helper::TimerTask*)
15  0x51dbdf3e base::internal::Invoker<1, base::internal::BindState<base::internal::RunnableAdapter<void (base::BaseTimer_Helper::TimerTask::*)()>, void ()(base::BaseTimer_Helper::TimerTask*), void ()(base::internal::OwnedWrapper<base::BaseTimer_Helper::TimerTask>)>, void ()(base::BaseTimer_Helper::TimerTask*)>::Run(base::internal::BindStateBase*)
16  0x51d1a0bb base::Callback<void ()()>::Run() const
17  0x51d179b5 MessageLoop::RunTask(base::PendingTask const&)
18  0x51d17bc1 MessageLoop::DeferOrRunPendingTask(base::PendingTask const&)
19  0x51d17df8 MessageLoop::DoWork()
20  0x51c985bb base::MessagePumpCFRunLoopBase::RunWork()
21  0x51c97cb2 base::MessagePumpCFRunLoopBase::RunWorkSource(void*)
22  0x9739242b __CFRunLoopDoSources0
23  0x9738feef __CFRunLoopRun
24  0x9738f3c4 CFRunLoopRunSpecific
25  0x9738f1f1 CFRunLoopRunInMode
26  0x96b5ee04 RunCurrentEventLoopInMode
27  0x96b5ebb9 ReceiveNextEventCommon
28  0x96b5ea3e BlockUntilNextEventMatchingListInMode
29  0x9345f595 _DPSNextEvent
30  0x9345edd6 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
31  0x934211f3 -[NSApplication run]

http://build.chromium.org/p/chromium.webkit/builders/Webkit%20Mac10.6%20(dbg)/builds/7141/steps/webkit_tests/logs/stdio

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&tests=media%2Ftrack%2Ftrack-webvtt-tc026-voice.html

[Radar WebKit Bug Importer]

<rdar://problem/10664198>

[Eric Carlson]

m_ignoreTrackDisplayUpdate isn't being initialized :-(

[Eric Carlson]

http://trac.webkit.org/changeset/104479