[Webkit-unassigned] [Bug 159552] New: [GStreamer] crash within Threaded compositor

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=159552

            Bug ID: 159552
           Summary: [GStreamer] crash within Threaded compositor
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pnormand at igalia.com
                CC: calvaris at igalia.com, cgarcia at igalia.com

../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp(787) : virtual void WebCore::MediaPlayerPrivateGStreamerBase::setSize(const WebCore::IntSize&)
1   0x73989ebe WTFCrash
2   0x7281a976 WebCore::TaskDispatcher<WebCore::Timer>::pendingDispatchers()
3   0x7281a6f6 WebCore::TaskDispatcher<WebCore::Timer>::postTask(WTF::NoncopyableFunction<void ()>&&)
4   0x724ebba8 WebCore::GenericTaskQueue<WebCore::Timer>::enqueueTask(WTF::NoncopyableFunction<void ()>&&)
5   0x72f482f0 WebCore::GenericEventQueue::enqueueEvent(WTF::RefPtr<WebCore::Event>&&)
6   0x724d6102 WebCore::HTMLMediaElement::scheduleEvent(WTF::AtomicString const&)
7   0x7304ac00 WebCore::HTMLVideoElement::scheduleResizeEvent()
8   0x7304ac46 WebCore::HTMLVideoElement::scheduleResizeEventIfSizeChanged()
9   0x724e1932 WebCore::HTMLMediaElement::mediaPlayerSizeChanged(WebCore::MediaPlayer*)
10  0x728a5a5c WebCore::MediaPlayer::sizeChanged()
11  0x72ce1eee WebCore::MediaPlayerPrivateGStreamerBase::triggerRepaint(_GstSample*)
mediaControlsScript:22:14: CONSOLE ERROR TypeError: null is not an object (evaluating 'panel.parentElement.querySelector')
12  0x72ce1fc2 WebCore::MediaPlayerPrivateGStreamerBase::drawCallback(WebCore::MediaPlayerPrivateGStreamerBase*, _GstBuffer*, _GstPad*, _GstBaseSink*)
13  0x6a250adc ffi_call_VFP
14  0x6a2510ea ffi_call

The sizeChanged() call needs to be scheduled to run on the main loop.

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