Created attachment 442725 [details] Crash Log media/track/track-element-dom-change-crash.html is a flaky crash on Catalina Debug wk1 EWS. This test failure has only been seen on EWS to date. History: https://results.webkit.org/?suite=layout-tests&test=media/track/track-element-dom-change-crash.html Build: https://ews-build.webkit.org/#/builders/56/builds/18584; first seen on https://ews-build.webkit.org/#/builders/56/builds/18444 Results: https://ews-build.s3-us-west-2.amazonaws.com/macOS-Catalina-Debug-WK1-Tests-EWS/r442706-18584/results.html Crash Log (attached): https://ews-build.s3-us-west-2.amazonaws.com/macOS-Catalina-Debug-WK1-Tests-EWS/r442706-18584/media/track/track-element-dom-change-crash-crash-log.txt Application Specific Information: CRASHING TEST: media/track/track-element-dom-change-crash.html Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.JavaScriptCore 0x000000010622dc4e WTFCrash + 14 (Assertions.cpp:321) 1 com.apple.WebCore 0x0000000127d582fb WTFCrashWithInfo(int, char const*, char const*, int) + 27 2 com.apple.WebCore 0x000000012a992dbf WebCore::JSEventListener::ensureJSFunction(WebCore::ScriptExecutionContext&) const + 639 3 com.apple.WebCore 0x000000012a9920b4 WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&) + 212 4 com.apple.WebCore 0x000000012b21a257 WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::RawPtrTraits<WebCore::RegisteredEventListener>, WTF::DefaultRefDerefTraits<WebCore::RegisteredEventListener> >, 1ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>, WebCore::EventTarget::EventInvokePhase) + 1063 5 com.apple.WebCore 0x000000012b219cb4 WebCore::EventTarget::fireEventListeners(WebCore::Event&, WebCore::EventTarget::EventInvokePhase) + 356 6 com.apple.WebCore 0x000000012b1e95da WebCore::EventContext::handleLocalEvents(WebCore::Event&, WebCore::EventTarget::EventInvokePhase) const + 938 7 com.apple.WebCore 0x000000012b210755 WebCore::dispatchEventInDOM(WebCore::Event&, WebCore::EventPath const&) + 149 8 com.apple.WebCore 0x000000012b20ffce WebCore::EventDispatcher::dispatchEvent(WebCore::Node&, WebCore::Event&) + 1134 9 com.apple.WebCore 0x000000012b2b2e6d WebCore::Node::dispatchEvent(WebCore::Event&) + 29 10 com.apple.WebCore 0x000000012b7d18b7 WebCore::HTMLTrackElement::didCompleteLoad(WebCore::HTMLTrackElement::LoadStatus) + 135 11 com.apple.WebCore 0x000000012ba74445 WebCore::LoadableTextTrack::scheduleLoad(WTF::URL const&)::$_1::operator()() + 309 12 com.apple.WebCore 0x000000012ba742be WTF::Detail::CallableWrapper<WebCore::LoadableTextTrack::scheduleLoad(WTF::URL const&)::$_1, void>::call() + 30 13 com.apple.WebCore 0x0000000127d71202 WTF::Function<void ()>::operator()() const + 130 (Function.h:82) 14 com.apple.WebCore 0x000000012b7e17c5 WebCore::HTMLTrackElement::scheduleTask(WTF::Function<void ()>&&)::$_3::operator()() + 21 15 com.apple.WebCore 0x000000012b7e16fe WTF::Detail::CallableWrapper<WebCore::HTMLTrackElement::scheduleTask(WTF::Function<void ()>&&)::$_3, void>::call() + 30 16 com.apple.WebCore 0x0000000127d71202 WTF::Function<void ()>::operator()() const + 130 (Function.h:82) 17 com.apple.WebCore 0x000000012b7e0f1e void WebCore::ActiveDOMObject::queueTaskKeepingObjectAlive<WebCore::HTMLTrackElement>(WebCore::HTMLTrackElement&, WebCore::TaskSource, WTF::Function<void ()>&&)::'lambda'()::operator()() const + 30 18 com.apple.WebCore 0x000000012b7e0b6e WTF::Detail::CallableWrapper<void WebCore::ActiveDOMObject::queueTaskKeepingObjectAlive<WebCore::HTMLTrackElement>(WebCore::HTMLTrackElement&, WebCore::TaskSource, WTF::Function<void ()>&&)::'lambda'(), void>::call() + 30 19 com.apple.WebCore 0x0000000127d71202 WTF::Function<void ()>::operator()() const + 130 (Function.h:82) 20 com.apple.WebCore 0x000000012b21defe WebCore::EventLoopFunctionDispatchTask::execute() + 30 21 com.apple.WebCore 0x000000012b213655 WebCore::EventLoop::run() + 373 22 com.apple.WebCore 0x000000012b3ba8cc WebCore::WindowEventLoop::didReachTimeToRun() + 44 23 com.apple.WebCore 0x000000012b3bdd47 decltype(*(std::__1::forward<WebCore::WindowEventLoop*&>(fp0)).*fp()) std::__1::__invoke<void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*&, void>(void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*&) + 119 24 com.apple.WebCore 0x000000012b3bdcc0 std::__1::__bind_return<void (WebCore::WindowEventLoop::*)(), std::__1::tuple<WebCore::WindowEventLoop*>, std::__1::tuple<>, __is_valid_bind_return<void (WebCore::WindowEventLoop::*)(), std::__1::tuple<WebCore::WindowEventLoop*>, std::__1::tuple<> >::value>::type std::__1::__apply_functor<void (WebCore::WindowEventLoop::*)(), std::__1::tuple<WebCore::WindowEventLoop*>, 0ul, std::__1::tuple<> >(void (WebCore::WindowEventLoop::*&)(), std::__1::tuple<WebCore::WindowEventLoop*>&, std::__1::__tuple_indices<0ul>, std::__1::tuple<>&&) + 64 25 com.apple.WebCore 0x000000012b3bdc79 std::__1::__bind_return<void (WebCore::WindowEventLoop::*)(), std::__1::tuple<WebCore::WindowEventLoop*>, std::__1::tuple<>, __is_valid_bind_return<void (WebCore::WindowEventLoop::*)(), std::__1::tuple<WebCore::WindowEventLoop*>, std::__1::tuple<> >::value>::type std::__1::__bind<void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*>::operator()<>() + 41 26 com.apple.WebCore 0x000000012b3bdbfe WTF::Detail::CallableWrapper<std::__1::__bind<void (WebCore::WindowEventLoop::*&)(), WebCore::WindowEventLoop*>, void>::call() + 30 27 com.apple.WebCore 0x0000000127d71202 WTF::Function<void ()>::operator()() const + 130 (Function.h:82) 28 com.apple.WebCore 0x0000000127d9ae8e WebCore::Timer::fired() + 30 29 com.apple.WebCore 0x000000012c411b04 WebCore::ThreadTimers::sharedTimerFiredInternal() + 708 30 com.apple.WebCore 0x000000012c41ecf1 WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0::operator()() const + 33 31 com.apple.WebCore 0x000000012c41ec7e WTF::Detail::CallableWrapper<WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0, void>::call() + 30 32 com.apple.WebCore 0x0000000127d71202 WTF::Function<void ()>::operator()() const + 130 (Function.h:82) 33 com.apple.WebCore 0x000000012c3b842b WebCore::MainThreadSharedTimer::fired() + 139 34 com.apple.WebCore 0x000000012c4a5db6 WebCore::timerFired(__CFRunLoopTimer*, void*) + 38 35 com.apple.CoreFoundation 0x00007fff336c0468 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20 36 com.apple.CoreFoundation 0x00007fff336bffce __CFRunLoopDoTimer + 872 37 com.apple.CoreFoundation 0x00007fff336bfab9 __CFRunLoopDoTimers + 322 38 com.apple.CoreFoundation 0x00007fff336a470d __CFRunLoopRun + 1885 39 com.apple.CoreFoundation 0x00007fff336a3953 CFRunLoopRunSpecific + 466 40 DumpRenderTree 0x000000010200b4a4 runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) + 3348 (DumpRenderTree.mm:1965) 41 DumpRenderTree 0x000000010200a6ea runTestingServerLoop() + 218 (DumpRenderTree.mm:1078) 42 DumpRenderTree 0x0000000102009f28 dumpRenderTree(int, char const**) + 616 (DumpRenderTree.mm:1192) 43 DumpRenderTree 0x000000010200c052 DumpRenderTreeMain(int, char const**) + 114 (DumpRenderTree.mm:1309) 44 DumpRenderTree 0x00000001020f9742 main + 34 (DumpRenderTreeMain.mm:34) 45 libdyld.dylib 0x00007fff6d7c7cc9 start + 1 I don't have a local platform to attempt reproduction.
<rdar://problem/84768475>
Updated test expectations at https://trac.webkit.org/changeset/284994/webkit.
I was not able to reproduce the crash locally on Catalina using run-webkit-tests --force -1 --iterations 500 --exit-after-n-crashes-or-timeouts 1 media/track/track-element-dom-change-crash.html --debug (Also tried with -f flag). Also tried with "--child-processes 1 --test-list <test list>", but couldn't reproduce the crash.
Created attachment 442742 [details] Test list
*** This bug has been marked as a duplicate of bug 232315 ***