[Webkit-unassigned] [Bug 160131] [GTK] Layout test media/track/track-in-band-duplicate-tracks-when-source-changes.html crashes and times out

Mon Dec 4 19:11:24 PST 2017

https://bugs.webkit.org/show_bug.cgi?id=160131

--- Comment #4 from Fujii Hironori <Hironori.Fujii at sony.com> ---
This is the callstack when the m_mediaElement is cleared.

> #0  (anonymous namespace)::VideoTrack::setMediaElement (this=0x7f6ec91ffaf0, element=0x0) at ../../Source/WebCore/html/track/VideoTrack.cpp:248
> #1  0x00007f6f4a26018f in (anonymous namespace)::TrackListBase::remove (this=0x7f6eca7343e0, track=..., scheduleEvent=true)
>     at ../../Source/WebCore/html/track/TrackListBase.cpp:79
> #2  0x00007f6f49447ae1 in (anonymous namespace)::HTMLMediaElement::removeVideoTrack (this=0x7f6eca766800, track=...)
>     at ../../Source/WebCore/html/HTMLMediaElement.cpp:4006
> #3  0x00007f6f49447cb4 in (anonymous namespace)::HTMLMediaElement::forgetResourceSpecificTracks (this=0x7f6eca766800)
>     at ../../Source/WebCore/html/HTMLMediaElement.cpp:4025
> #4  0x00007f6f4944f016 in (anonymous namespace)::HTMLMediaElement::createMediaPlayer (this=0x7f6eca766800) at ../../Source/WebCore/html/HTMLMediaElement.cpp:6410
> #5  0x00007f6f4943f388 in (anonymous namespace)::HTMLMediaElement::loadNextSourceChild (this=0x7f6eca766800) at ../../Source/WebCore/html/HTMLMediaElement.cpp:1527
> #6  0x00007f6f4943dd5f in (anonymous namespace)::HTMLMediaElement::<lambda()>::operator()(void) const (__closure=0x7f6ec91c58b8)
>     at ../../Source/WebCore/html/HTMLMediaElement.cpp:1054
> #7  0x00007f6f49458fd2 in WTF::Function<void()>::CallableWrapper<WebCore::HTMLMediaElement::scheduleNextSourceChild()::<lambda()> >::call(void) (
>     this=0x7f6ec91c58b0) at ../../Source/WTF/wtf/Function.h:101
> #8  0x00007f6f476214e6 in WTF::Function<void()>::operator()(void) const (this=0x7f6ebf0dfef8) at ../../Source/WTF/wtf/Function.h:56
> #9  0x00007f6f48dc6591 in (anonymous namespace)::GenericTaskQueue<WebCore::Timer>::<lambda()>::operator()(void) const (__closure=0x7f6ebf0dfef0)
>     at ../../Source/WebCore/platform/GenericTaskQueue.h:96
> #10 0x00007f6f48dd0798 in WTF::Function<void()>::CallableWrapper<WebCore::GenericTaskQueue<T>::enqueueTask(WebCore::GenericTaskQueue<T>::TaskFunction&&) [with T = WebCore::Timer; WebCore::GenericTaskQueue<T>::TaskFunction = WTF::Function<void()>]::<lambda()> >::call(void) (this=0x7f6ebf0dfee8)
>     at ../../Source/WTF/wtf/Function.h:101
> #11 0x00007f6f476214e6 in WTF::Function<void()>::operator()(void) const (this=0x7ffca0b6a440) at ../../Source/WTF/wtf/Function.h:56
> #12 0x00007f6f4997277e in (anonymous namespace)::TaskDispatcher<WebCore::Timer>::dispatchOneTask (this=0x7f6eca766c10)
>     at ../../Source/WebCore/platform/GenericTaskQueue.cpp:80
> #13 0x00007f6f49972649 in (anonymous namespace)::TaskDispatcher<WebCore::Timer>::sharedTimerFired () at ../../Source/WebCore/platform/GenericTaskQueue.cpp:65
> #14 0x00007f6f499724a3 in (anonymous namespace)::TaskDispatcher<WebCore::Timer>::<lambda()>::operator()(void) const (__closure=0x7f6eca776958)
>     at ../../Source/WebCore/platform/GenericTaskQueue.cpp:49
> #15 0x00007f6f4997308e in WTF::Function<void()>::CallableWrapper<WebCore::TaskDispatcher<WebCore::Timer>::sharedTimer()::<lambda()> >::call(void) (
>     this=0x7f6eca776950) at ../../Source/WTF/wtf/Function.h:101
> #16 0x00007f6f476214e6 in WTF::Function<void()>::operator()(void) const (this=0x7f6f4e3ef740 <WebCore::TaskDispatcher<WebCore::Timer>::sharedTimer()::timer+64>)
>     at ../../Source/WTF/wtf/Function.h:56
> #17 0x00007f6f4762d172 in (anonymous namespace)::Timer::fired (this=0x7f6f4e3ef700 <WebCore::TaskDispatcher<WebCore::Timer>::sharedTimer()::timer>)
>     at ../../Source/WebCore/platform/Timer.h:133
> #18 0x00007f6f4999c075 in (anonymous namespace)::ThreadTimers::sharedTimerFiredInternal (this=0x7f6f29efd1e0) at ../../Source/WebCore/platform/ThreadTimers.cpp:118
> #19 0x00007f6f4999bb4d in (anonymous namespace)::ThreadTimers::<lambda()>::operator()(void) const (__closure=0x7f6f29efa378)
>     at ../../Source/WebCore/platform/ThreadTimers.cpp:70
> #20 0x00007f6f4999e9c0 in WTF::Function<void()>::CallableWrapper<WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::<lambda()> >::call(void) (
>     this=0x7f6f29efa370) at ../../Source/WTF/wtf/Function.h:101
> #21 0x00007f6f476214e6 in WTF::Function<void()>::operator()(void) const (this=0x7f6f4e3ef868 <WebCore::MainThreadSharedTimer::singleton()::instance+8>)
>     at ../../Source/WTF/wtf/Function.h:56
> #22 0x00007f6f499831e9 in (anonymous namespace)::MainThreadSharedTimer::fired (this=0x7f6f4e3ef860 <WebCore::MainThreadSharedTimer::singleton()::instance>)
>     at ../../Source/WebCore/platform/MainThreadSharedTimer.cpp:54
> #23 0x00007f6f499846a0 in WTF::RunLoop::Timer<WebCore::MainThreadSharedTimer>::fired (
>     this=0x7f6f4e3ef870 <WebCore::MainThreadSharedTimer::singleton()::instance+16>) at ../../Source/WTF/wtf/RunLoop.h:152
> #24 0x00007f6f3d350c91 in WTF::RunLoop::TimerBase::<lambda(gpointer)>::operator()(gpointer) const (__closure=0x0, 
>     userData=0x7f6f4e3ef870 <WebCore::MainThreadSharedTimer::singleton()::instance+16>) at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:166
> #25 0x00007f6f3d350ccd in WTF::RunLoop::TimerBase::<lambda(gpointer)>::_FUN(gpointer) () at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:170
> #26 0x00007f6f3d350356 in WTF::<lambda(GSource*, GSourceFunc, gpointer)>::operator()(GSource *, GSourceFunc, gpointer) const (__closure=0x0, 
>     source=0x564f612caa30, callback=0x7f6f3d350cb0 <WTF::RunLoop::TimerBase::<lambda(gpointer)>::_FUN(gpointer)>, 
>     userData=0x7f6f4e3ef870 <WebCore::MainThreadSharedTimer::singleton()::instance+16>) at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:45
> #27 0x00007f6f3d350385 in WTF::<lambda(GSource*, GSourceFunc, gpointer)>::_FUN(GSource *, GSourceFunc, gpointer) () at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:46
> #28 0x00007f6f3e4f7c35 in g_main_dispatch () at /home/fujii/work/webkit/ga/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmain.c:3148
> #29 g_main_context_dispatch () at /home/fujii/work/webkit/ga/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmain.c:3813
> #30 0x00007f6f3e4f8000 in g_main_context_iterate () at /home/fujii/work/webkit/ga/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmain.c:3886
> #31 0x00007f6f3e4f8312 in g_main_loop_run () at /home/fujii/work/webkit/ga/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmain.c:4082
> #32 0x00007f6f3d3508d5 in WTF::RunLoop::run () at ../../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
> #33 0x00007f6f47f36996 in (anonymous namespace)::ChildProcessMain<WebKit::WebProcess, WebKit::WebProcessMain> (argc=2, argv=0x7ffca0b6a9e8)
>     at ../../Source/WebKit/Shared/unix/ChildProcessMain.h:61
> #34 0x00007f6f47f36839 in (anonymous namespace)::WebProcessMainUnix (argc=2, argv=0x7ffca0b6a9e8) at ../../Source/WebKit/WebProcess/gtk/WebProcessMainGtk.cpp:69
> #35 0x0000564f60461a45 in main (argc=2, argv=0x7ffca0b6a9e8) at ../../Source/WebKit/WebProcess/EntryPoint/unix/WebProcessMain.cpp:52

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