[Webkit-unassigned] [Bug 80681] New: [JSC] AudioDestinationNode event notification error on AudioContext

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=80681

           Summary: [JSC] AudioDestinationNode event notification error on
                    AudioContext
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Audio
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: pnormand at igalia.com
                CC: crogers at google.com
        Depends on: 67187


While working on getting the WebAudio layout tests up in the GTK port I came up with this:

#0  0xb41008b6 in WebCore::JSEventListener::jsFunction (this=0xa14eeae0, scriptExecutionContext=0xa14cf920)
    at ../../Source/WebCore/bindings/js/JSEventListener.h:84
84            ASSERT(m_wrapper || !m_jsFunction);

#0  0xb41008b6 in WebCore::JSEventListener::jsFunction (this=0xa14eeae0, scriptExecutionContext=0xa14cf920)
    at ../../Source/WebCore/bindings/js/JSEventListener.h:84
#1  0xb410003d in WebCore::JSEventListener::handleEvent (this=0xa14eeae0, scriptExecutionContext=0xa14cf920, event=0xa141b2a8)
    at ../../Source/WebCore/bindings/js/JSEventListener.cpp:80
#2  0xb4348683 in WebCore::EventTarget::fireEventListeners (this=0x9f6351ac, event=0xa141b2a8, d=0x9f63527c, entry=...)
    at ../../Source/WebCore/dom/EventTarget.cpp:231
#3  0xb4348525 in WebCore::EventTarget::fireEventListeners (this=0x9f6351ac, event=0xa141b2a8) at ../../Source/WebCore/dom/EventTarget.cpp:198
#4  0xb43483be in WebCore::EventTarget::dispatchEvent (this=0x9f6351ac, event=...) at ../../Source/WebCore/dom/EventTarget.cpp:177
#5  0xb4a88cf9 in WebCore::AudioContext::fireCompletionEvent (this=0x9f635198) at ../../Source/WebCore/webaudio/AudioContext.cpp:778
#6  0xb4a9f583 in WebCore::OfflineAudioDestinationNode::notifyComplete (this=0x9f633020)
    at ../../Source/WebCore/webaudio/OfflineAudioDestinationNode.cpp:165
#7  0xb4a9f541 in WebCore::OfflineAudioDestinationNode::notifyCompleteDispatch (userData=0x9f633020)
    at ../../Source/WebCore/webaudio/OfflineAudioDestinationNode.cpp:159
#8  0xb7397733 in WTF::dispatchFunctionsFromMainThread () at ../../Source/JavaScriptCore/wtf/MainThread.cpp:156
#9  0xb73974a0 in WTF::timeoutFired () at ../../Source/JavaScriptCore/wtf/gtk/MainThreadGtk.cpp:43
#10 0xb321b9df in g_timeout_dispatch (source=0xa1cb5d0, callback=0xb7397489 <WTF::timeoutFired(gpointer)>, user_data=0x0) at gmain.c:3854
#11 0xb321ac7a in g_main_dispatch (context=0x9e0c058) at gmain.c:2510
#12 g_main_context_dispatch (context=0x9e0c058) at gmain.c:3047
#13 0xb321b085 in g_main_context_iterate (dispatch=1, block=-1289582320, context=0x9e0c058, self=<optimized out>) at gmain.c:3118
#14 g_main_context_iterate (context=0x9e0c058, block=-1289582320, dispatch=1, self=<optimized out>) at gmain.c:3055
#15 0xb321b4cb in g_main_loop_run (loop=0x9f61ab90) at gmain.c:3312
#16 0xb37e28b5 in gtk_main () at gtkmain.c:1358
#17 0x0809c471 in runTest (testPathOrURL=...) at ../../Tools/DumpRenderTree/gtk/DumpRenderTree.cpp:715
#18 0x0809bad7 in runTestingServerLoop () at ../../Tools/DumpRenderTree/gtk/DumpRenderTree.cpp:498
#19 0x0809e74f in main (argc=2, argv=0xbf9143c4) at ../../Tools/DumpRenderTree/gtk/DumpRenderTree.cpp:1389

It seems that the AudioDestinationNode tries to notify a no longer active AudioContext.

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