[Webkit-unassigned] [Bug 172167] [Threaded Compositor] SHOULD NEVER BE REACHED in WebKit::CompositingRunLoop::updateCompleted

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172167

Charlie Turner <cturner at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cturner at igalia.com

--- Comment #13 from Charlie Turner <cturner at igalia.com> ---
I'm still hitting case 1). I can pretty reliably trigger it by watching any YouTube video with Epiphany built against r218095. It's non-deterministic if you just let videos play, but I found that interacting with any of the controls is a sure fire way of getting this backtrace (among others unfortunately, but you always get one :))

The m_updateState is Completed when I enter the updateCompleted(): 

SHOULD NEVER BE REACHED
../../Source/WebKit2/Shared/CoordinatedGraphics/threadedcompositor/CompositingRunLoop.cpp(188) : void WebKit::CompositingRunLoop::updateCompleted()
1   0x7f0dc5e50818 /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(WTFCrash+0x1e) [0x7f0dc5e50818]
2   0x7f0dcd8443a8 /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::CompositingRunLoop::updateCompleted()+0xe4) [0x7f0dcd8443a8]
3   0x7f0dcd849d6a /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::ThreadedCompositor::sceneUpdateFinished()+0xb8) [0x7f0dcd849d6a]
4   0x7f0dcd84a33f /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::ThreadedCompositor::frameComplete()+0x45) [0x7f0dcd84a33f]
5   0x7f0dcda48d06 /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::ThreadedCoordinatedLayerTreeHost::frameComplete()+0x26) [0x7f0dcda48d06]
6   0x7f0dcda50c15 /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::AcceleratedSurfaceX11::didRenderFrame()+0x27) [0x7f0dcda50c15]
7   0x7f0dcda48e55 /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::ThreadedCoordinatedLayerTreeHost::didRenderFrame()+0x43) [0x7f0dcda48e55]
8   0x7f0dcda49bdc /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::ThreadedCoordinatedLayerTreeHost::CompositorClient::didRenderFrame()+0x1c) [0x7f0dcda49bdc]
9   0x7f0dcd849c8e /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::ThreadedCompositor::renderLayerTree()+0x372) [0x7f0dcd849c8e]
10  0x7f0dcd8489cd /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(+0x64e59cd) [0x7f0dcd8489cd]
11  0x7f0dcd84c916 /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(+0x64e9916) [0x7f0dcd84c916]
12  0x357abca /home/charlie/jhbuild/install/libexec/webkit2gtk-4.0/WebKitWebProcess(std::function<void ()>::operator()() const+0x32) [0x357abca]
13  0x7f0dcd8443c8 /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WebKit::CompositingRunLoop::updateTimerFired()+0x1c) [0x7f0dcd8443c8]
14  0x7f0dcd847e58 /home/charlie/jhbuild/install/lib/libwebkit2gtk-4.0.so.37(WTF::RunLoop::Timer<WebKit::CompositingRunLoop>::fired()+0x66) [0x7f0dcd847e58]
15  0x7f0dc5ebeaf1 /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(+0x2a78af1) [0x7f0dc5ebeaf1]
16  0x7f0dc5ebeb2d /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(+0x2a78b2d) [0x7f0dc5ebeb2d]
17  0x7f0dc5ebe1a2 /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(+0x2a781a2) [0x7f0dc5ebe1a2]
18  0x7f0dc5ebe1d1 /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(+0x2a781d1) [0x7f0dc5ebe1d1]
19  0x7f0dc0c59dca /home/charlie/jhbuild/install/lib/libglib-2.0.so.0(g_main_context_dispatch+0x15a) [0x7f0dc0c59dca]
20  0x7f0dc0c5a170 /home/charlie/jhbuild/install/lib/libglib-2.0.so.0(+0x4b170) [0x7f0dc0c5a170]
21  0x7f0dc0c5a492 /home/charlie/jhbuild/install/lib/libglib-2.0.so.0(g_main_loop_run+0xc2) [0x7f0dc0c5a492]
22  0x7f0dc5ebe738 /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(WTF::RunLoop::run()+0xba) [0x7f0dc5ebe738]
23  0x7f0dc5ebc20e /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(+0x2a7620e) [0x7f0dc5ebc20e]
24  0x7f0dc5ebdc82 /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(+0x2a77c82) [0x7f0dc5ebdc82]
25  0x351a3cf /home/charlie/jhbuild/install/libexec/webkit2gtk-4.0/WebKitWebProcess(WTF::Function<void ()>::operator()() const+0x37) [0x351a3cf]
26  0x7f0dc5e74e9e /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(+0x2a2ee9e) [0x7f0dc5e74e9e]
27  0x7f0dc5eba77b /home/charlie/jhbuild/install/lib/libjavascriptcoregtk-4.0.so.18(+0x2a7477b) [0x7f0dc5eba77b]
28  0x7f0dbecfa6ba /lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba) [0x7f0dbecfa6ba]
29  0x7f0dbdd7382d /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7f0dbdd7382d]

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