[Webkit-unassigned] [Bug 220017] New: REGRESSION (r270938): ASSERTION FAILED: !m_renderThread in WebKit::RemoteAudioDestinationProxy::startRenderingThread

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220017

            Bug ID: 220017
           Summary: REGRESSION (r270938): ASSERTION FAILED:
                    !m_renderThread in
                    WebKit::RemoteAudioDestinationProxy::startRenderingThr
                    ead
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Audio
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ryanhaddad at apple.com
                CC: cdumez at apple.com

Seeing the following on Mojave debug bots after https://trac.webkit.org/changeset/270938/webkit

    TestWebKitAPI.GPUProcess.WebProcessTerminationAfterTooManyGPUProcessCrashes
        _RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL.
        ASSERTION FAILED: !m_renderThread
        /Volumes/Data/slave/mojave-debug/build/Source/WebKit/WebProcess/GPU/media/RemoteAudioDestinationProxy.cpp(79) : void WebKit::RemoteAudioDestinationProxy::startRenderingThread()
        1   0x461e0d2e9 WTFCrash
        2   0x430003e6b WTFCrashWithInfo(int, char const*, char const*, int)
        3   0x4319ab944 WebKit::RemoteAudioDestinationProxy::startRenderingThread()
        4   0x4319ab88c WebKit::RemoteAudioDestinationProxy::connectToGPUProcess()
        5   0x4319acc59 WebKit::RemoteAudioDestinationProxy::gpuProcessConnectionDidClose(WebKit::GPUProcessConnection&)
        6   0x4318ce5cc WebKit::GPUProcessConnection::didClose(IPC::Connection&)
        7   0x43009afdf IPC::Connection::connectionDidClose()::$_7::operator()()
        8   0x43009aee9 WTF::Detail::CallableWrapper<IPC::Connection::connectionDidClose()::$_7, void>::call()
        9   0x461e3881a WTF::Function<void ()>::operator()() const
        10  0x461eb73a6 WTF::RunLoop::performWork()
        11  0x461ebba4e WTF::RunLoop::performWork(void*)
        12  0x7fff51aac683 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
        13  0x7fff51aac629 __CFRunLoopDoSource0
        14  0x7fff51a8ffeb __CFRunLoopDoSources0
        15  0x7fff51a8f5b5 __CFRunLoopRun
        16  0x7fff51a8eebe CFRunLoopRunSpecific
        17  0x7fff53cf37df -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
        18  0x7fff53cf36b4 -[NSRunLoop(NSRunLoop) run]
        19  0x7fff7dc1e077 _xpc_objc_main
        20  0x7fff7dc1db79 _xpc_copy_xpcservice_dictionary
        21  0x430c7d0b7 WebKit::XPCServiceMain(int, char const**)
        22  0x43213e2db WKXPCServiceMain
        23  0x109138e82 main
        24  0x7fff7d9e53d5 start
        _RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL.
        _RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL.
        LEAK: 1 WebProcessPool
        LEAK: 1 WebPageProxy

        /Volumes/Data/slave/mojave-debug/build/Tools/TestWebKitAPI/Tests/WebKitCocoa/GPUProcess.mm:182
        Expected equality of these values:
          webViewPID
            Which is: 72453
          [webView _webProcessIdentifier]
            Which is: 72459

https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.GPUProcess.WebProcessTerminationAfterTooManyGPUProcessCrashes

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