[Webkit-unassigned] [Bug 230531] New: [WinCairo] jquery/offset.html is randomly failing an assertion in DrawingAreaCoordinatedGraphics::layerHostDidFlushLayers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=230531

            Bug ID: 230531
           Summary: [WinCairo] jquery/offset.html is randomly failing an
                    assertion in
                    DrawingAreaCoordinatedGraphics::layerHostDidFlushLayer
                    s
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Hironori.Fujii at sony.com
                CC: kkinnunen at apple.com

[WinCairo] jquery/offset.html is randomly failing an assertion in DrawingAreaCoordinatedGraphics::layerHostDidFlushLayers

WinCairo WebKit2 Debug build.

Regressions: Unexpected crashes (1)
  jquery/offset.html [ Crash ]

ASSERTION FAILED: m_layerTreeHost
C:\home\webkit\gb\Source\WebKit\WebProcess\WebPage\CoordinatedGraphics\DrawingAreaCoordinatedGraphics.cpp(369) : WebKit::DrawingAreaCoordinatedGraphics::layerHostDidFlushLayers
1   00007FF9610A1DEB WTFCrash
2   00007FF913CB967E WTFCrashWithInfo
3   00007FF913D7945C WebKit::DrawingAreaCoordinatedGraphics::layerHostDidFlushLayers
4   00007FF913D80850 WebKit::LayerTreeHost::layerFlushTimerFired
5   00007FF913D8179E std::invoke<void (__cdecl WebKit::LayerTreeHost::*&)(void),WebKit::LayerTreeHost * &>
6   00007FF913D8126E std::_Invoker_ret<std::_Unforced,0>::_Call<void (__cdecl WebKit::LayerTreeHost::*&)(void),WebKit::LayerTreeHost * &>
7   00007FF913D812D1 std::_Call_binder<std::_Unforced,0,void (__cdecl WebKit::LayerTreeHost::*)(void),std::tuple<WebKit::LayerTreeHost *>,std::tuple<> >
8   00007FF913D8123B std::_Binder<std::_Unforced,void (__cdecl WebKit::LayerTreeHost::*&)(void),WebKit::LayerTreeHost *>::operator()<>
9   00007FF913D829AB WTF::Detail::CallableWrapper<std::_Binder<std::_Unforced,void (__cdecl WebKit::LayerTreeHost::*&)(void),WebKit::LayerTreeHost *>,void>::call
10  00007FF913CB82A4 WTF::Function<void __cdecl(void)>::operator()
11  00007FF913D82BCB WebCore::Timer::fired
12  00007FF918793B00 WebCore::ThreadTimers::sharedTimerFiredInternal
13  00007FF91879808F <lambda_262b710db5e1fd9cbe42ca9bc65314e1>::operator()
14  00007FF91879820B WTF::Detail::CallableWrapper<<lambda_262b710db5e1fd9cbe42ca9bc65314e1>,void>::call
15  00007FF913CB82A4 WTF::Function<void __cdecl(void)>::operator()
16  00007FF9187507E7 WebCore::MainThreadSharedTimer::fired
17  00007FF91570D42A WebCore::TimerWindowWndProc
18  00007FF98E64E7E8 CallWindowProcW
19  00007FF98E64E229 DispatchMessageW
20  00007FF961214B86 WTF::RunLoop::run
21  00007FF913D8930B WebKit::AuxiliaryProcessMainBase<WebKit::WebProcess,1>::run
22  00007FF913D890D3 WebKit::AuxiliaryProcessMain<WebKit::WebProcessMainWin>
23  00007FF913D88F15 WebKit::WebProcessMain
24  00007FF6209E101D main
25  00007FF6209E125C __scrt_common_main_seh
26  00007FF98FA17034 BaseThreadInitThunk
27  00007FF98FD22651 RtlUserThreadStart

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