[Webkit-unassigned] [Bug 219839] New: GPU process sometimes hangs during MotionMark Focus when enabling GPU Process for DOM

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=219839

            Bug ID: 219839
           Summary: GPU process sometimes hangs during MotionMark Focus
                    when enabling GPU Process for DOM
           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: wenson_hsieh at apple.com

(This manifests itself as a crash under this stack, due to backend creation timing out since the GPU process is unresponsive)

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   WebKit                              0x000000010352857c WebKit::ImageBufferShareableIOSurfaceBackend::createImageBufferBackendHandle() const + 24
1   WebKit                              0x0000000103206474 WebKit::RemoteLayerBackingStore::encode(IPC::Encoder&) const + 316
2   WebKit                              0x0000000103206474 WebKit::RemoteLayerBackingStore::encode(IPC::Encoder&) const + 316
3   WebKit                              0x000000010320a050 WebKit::RemoteLayerTreeTransaction::LayerProperties::encode(IPC::Encoder&) const + 1184

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