[Webkit-unassigned] [Bug 129792] New: [Mac] Leak: dispatch_semaphore leak allocated in MediaPlayerPrivateAVFoundationObjC::waitForVideoOutputMediaDataWillChange

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=129792

           Summary: [Mac] Leak: dispatch_semaphore leak allocated in
                    MediaPlayerPrivateAVFoundationObjC::waitForVideoOutput
                    MediaDataWillChange
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: joepeck at webkit.org
                CC: eric.carlson at apple.com, jer.noble at apple.com


Seen on the leaks bot:
<http://build.webkit.org/builders/Apple%20MountainLion%20%28Leaks%29/builds/9535/steps/layout-test/logs/stdio>

Leak: 0x7fb97b2a39b0  size=112  zone: DefaultMallocZone_0x100eb0000   OS_dispatch_semaphore  ObjC  libdispatch.dylib
    0x781082a8 0x00007fff 0x00000000 0x00000000     ...x............
    0x89abcdef 0xffffffff 0x78109d00 0x00007fff     ...........x....
    0x00000000 0x00000000 0x00000000 0x00000000     ................
    0x00000000 0x00000000 0x00000000 0x00000000     ................
    0x00000000 0x00000000 0x00000000 0x00000000     ................
    0x0000232b 0x00000000 0x00000000 0x00000000     +#..............
    0x00000000 0x00000000 0x00000000 0x00000000     ................
    Call stack: [thread 0x7fff78de5180]: 
        | 0x2 
        | start 
        | main DumpRenderTreeMain.mm:30 
        | DumpRenderTreeMain(int, char const**) DumpRenderTree.mm:1277 
        | dumpRenderTree(int, char const**) DumpRenderTree.mm:1169 
        | runTestingServerLoop() DumpRenderTree.mm:1085 
        | runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) DumpRenderTree.mm:1821 
        | CFRunLoopRunSpecific 
        | __CFRunLoopRun 
        | __CFRunLoopDoTimer 
        | __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ 
        | WebCore::timerFired(__CFRunLoopTimer*, void*) SharedTimerMac.mm:134 
        | WebCore::ThreadTimers::sharedTimerFired() ThreadTimers.cpp:108 
        | WebCore::ThreadTimers::sharedTimerFiredInternal() ThreadTimers.cpp:135 
        | WebCore::Timer<WebCore::GenericEventQueue>::fired() Timer.h:133 
        | std::__1::function<void ()>::operator()() const functional:1435 
        | std::__1::__function::__func<std::__1::__bind<void (WebCore::GenericEventQueue::*)(WebCore::Timer<WebCore::GenericEventQueue>&)&, WebCore::GenericEventQueue*&, std::__1::reference_wrapper<WebCore::Timer<WebCore::GenericEventQueue> > >, std::__1::allocator<std::__1::__bind<void (WebCore::GenericEventQueue::*)(WebCore::Timer<WebCore::GenericEventQueue>&)&, WebCore::GenericEventQueue*&, std::__1::reference_wrapper<WebCore::Timer<WebCore::GenericEventQueue> > > >, void ()>::operator()() functional:1059 
        | WebCore::GenericEventQueue::timerFired(WebCore::Timer<WebCore::GenericEventQueue>&) GenericEventQueue.cpp:72 
        | WebCore::Node::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) Node.cpp:2028 
        | WebCore::EventDispatcher::dispatchEvent(WebCore::Node*, WTF::PassRefPtr<WebCore::Event>) EventDispatcher.cpp:326 
        | WebCore::dispatchEventInDOM(WebCore::Event&, WebCore::EventPath const&, WebCore::WindowEventContext&) EventDispatcher.cpp:271 
        | WebCore::EventContext::handleLocalEvents(WebCore::Event&) const EventContext.cpp:55 
        | WebCore::Node::handleLocalEvents(WebCore::Event&) Node.cpp:2014 
        | WebCore::EventTarget::fireEventListeners(WebCore::Event*) EventTarget.cpp:197 
        | WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1ul, WTF::CrashOnOverflow>&) EventTarget.cpp:247 
        | WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) JSEventListener.cpp:126 
        | WebCore::JSMainThreadExecState::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) JSMainThreadExecState.h:55 
        | JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) CallData.cpp:39 
        | JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) Interpreter.cpp:994 
        | JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) JITCode.cpp:47 
        | callToJavaScript 
        | llint_op_call 
        | llint_op_call 
        | llint_op_call 
        | llint_op_call 
        | 0x5d028c80103a 
        | WebCore::jsWebGLRenderingContextPrototypeFunctionTexImage2D(JSC::ExecState*) JSWebGLRenderingContext.cpp:3313 
        | WebCore::jsWebGLRenderingContextPrototypeFunctionTexImage2D5(JSC::ExecState*) JSWebGLRenderingContext.cpp:3295 
        | WebCore::WebGLRenderingContext::texImage2D(unsigned int, int, unsigned int, unsigned int, unsigned int, WebCore::HTMLVideoElement*, int&) WebGLRenderingContext.cpp:3974 
        | WebCore::WebGLRenderingContext::videoFrameToImage(WebCore::HTMLVideoElement*, WebCore::BackingStoreCopy, int&) WebGLRenderingContext.cpp:3945 
        | WebCore::HTMLVideoElement::paintCurrentFrameInContext(WebCore::GraphicsContext*, WebCore::IntRect const&) HTMLVideoElement.cpp:256 
        | WebCore::MediaPlayer::setVisible(bool) MediaPlayer.cpp:738 
        | WebCore::MediaPlayerPrivateAVFoundation::setVisible(bool) MediaPlayerPrivateAVFoundation.cpp:593 
        | WebCore::MediaPlayerPrivateAVFoundation::setUpVideoRendering() MediaPlayerPrivateAVFoundation.cpp:139 
        | WebCore::MediaPlayerPrivateAVFoundationObjC::createContextVideoRenderer() MediaPlayerPrivateAVFoundationObjC.mm:434 
        | WebCore::MediaPlayerPrivateAVFoundationObjC::createVideoOutput() MediaPlayerPrivateAVFoundationObjC.mm:1424 
        | WebCore::MediaPlayerPrivateAVFoundationObjC::waitForVideoOutputMediaDataWillChange() MediaPlayerPrivateAVFoundationObjC.mm:1569 
        | dispatch_semaphore_create 
        | _os_object_alloc 
        | class_createInstance 
        | calloc 
        | malloc_zone_calloc 

Looks like it is not released in the destructor.

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