Bug 214855

Summary:	[ Mojave debug wk1 ews ] ASSERTION FAILED: m_wrapper on imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/track/track-element/track-addtrack-kind.html, flakily
Product:	WebKit	Reporter:	Karl Rackler <rackler>
Component:	Media	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	cdumez, jer.noble, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=229765

Description Karl Rackler 2020-07-27 15:58:22 PDT

Description:
imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/track/track-element/track-addtrack-kind.html

This is a pre-existing flaky failure only on ews.  This particular instance was a crash.

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Ftrack%2Ftrack-element%2Ftrack-addtrack-kind.html&flavor=wk1&style=debug&platform=mac&limit=50000

Crash Log:
No crash log found for DumpRenderTree:30469.

stdout:

stderr:
ASSERTION FAILED: m_wrapper
./bindings/js/JSEventListener.h(125) : JSC::JSObject *WebCore::JSEventListener::ensureJSFunction(WebCore::ScriptExecutionContext &) const
1   0x1096ecfb9 WTFCrash
2   0x11d49ba3b WTFCrashWithInfo(int, char const*, char const*, int)
3   0x11fb5ce59 WebCore::JSEventListener::ensureJSFunction(WebCore::ScriptExecutionContext&) const
4   0x11fb5c16b WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&)
5   0x12025f21b WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::DumbPtrTraits<WebCore::RegisteredEventListener> >, 1ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>, WebCore::EventTarget::EventInvokePhase)

Comment 1 Radar WebKit Bug Importer 2020-07-27 15:59:02 PDT

<rdar://problem/66186856>

Comment 2 Ryan Haddad 2020-07-27 16:53:29 PDT

Here is the complete backtrace:
ASSERTION FAILED: m_wrapper
./bindings/js/JSEventListener.h(125) : JSC::JSObject *WebCore::JSEventListener::ensureJSFunction(WebCore::ScriptExecutionContext &) const
1   0x1096ecfb9 WTFCrash
2   0x11d49ba3b WTFCrashWithInfo(int, char const*, char const*, int)
3   0x11fb5ce59 WebCore::JSEventListener::ensureJSFunction(WebCore::ScriptExecutionContext&) const
4   0x11fb5c16b WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&)
5   0x12025f21b WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::DumbPtrTraits<WebCore::RegisteredEventListener> >, 1ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>, WebCore::EventTarget::EventInvokePhase)
6   0x12025b3fe WebCore::EventTarget::fireEventListeners(WebCore::Event&, WebCore::EventTarget::EventInvokePhase)
7   0x1202e836a WebCore::Node::handleLocalEvents(WebCore::Event&, WebCore::EventTarget::EventInvokePhase)
8   0x120246770 WebCore::EventContext::handleLocalEvents(WebCore::Event&, WebCore::EventTarget::EventInvokePhase) const
9   0x1202471a7 WebCore::dispatchEventInDOM(WebCore::Event&, WebCore::EventPath const&)
10  0x120246da5 WebCore::EventDispatcher::dispatchEvent(WebCore::Node&, WebCore::Event&)
11  0x1202e83bd WebCore::Node::dispatchEvent(WebCore::Event&)
12  0x12078dfde WebCore::HTMLTrackElement::didCompleteLoad(WebCore::HTMLTrackElement::LoadStatus)
13  0x1209acd80 WebCore::LoadableTextTrack::cueLoadingCompleted(WebCore::TextTrackLoader&, bool)
14  0x120e36936 WebCore::TextTrackLoader::cueLoadTimerFired()
15  0x120e54bf1 decltype(*(std::__1::forward<WebCore::TextTrackLoader*&>(fp0)).*fp()) std::__1::__invoke<void (WebCore::TextTrackLoader::*&)(), WebCore::TextTrackLoader*&, void>(void (WebCore::TextTrackLoader::*&&&)(), WebCore::TextTrackLoader*&&&)
16  0x120e54b50 std::__1::__bind_return<void (WebCore::TextTrackLoader::*)(), std::__1::tuple<WebCore::TextTrackLoader*>, std::__1::tuple<>, __is_valid_bind_return<void (WebCore::TextTrackLoader::*)(), std::__1::tuple<WebCore::TextTrackLoader*>, std::__1::tuple<> >::value>::type std::__1::__apply_functor<void (WebCore::TextTrackLoader::*)(), std::__1::tuple<WebCore::TextTrackLoader*>, 0ul, std::__1::tuple<> >(void (WebCore::TextTrackLoader::*&)(), std::__1::tuple<WebCore::TextTrackLoader*>&, std::__1::__tuple_indices<0ul>, std::__1::tuple<>&&)
17  0x120e54afc std::__1::__bind_return<void (WebCore::TextTrackLoader::*)(), std::__1::tuple<WebCore::TextTrackLoader*>, std::__1::tuple<>, __is_valid_bind_return<void (WebCore::TextTrackLoader::*)(), std::__1::tuple<WebCore::TextTrackLoader*>, std::__1::tuple<> >::value>::type std::__1::__bind<void (WebCore::TextTrackLoader::*&)(), WebCore::TextTrackLoader*>::operator()<>()
18  0x120e54a99 WTF::Detail::CallableWrapper<std::__1::__bind<void (WebCore::TextTrackLoader::*&)(), WebCore::TextTrackLoader*>, void>::call()
19  0x11d4a9a3a WTF::Function<void ()>::operator()() const
20  0x11d4dc889 WebCore::Timer::fired()
21  0x1212882ea WebCore::ThreadTimers::sharedTimerFiredInternal()
22  0x121291061 WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0::operator()() const
23  0x121291019 WTF::Detail::CallableWrapper<WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0, void>::call()
24  0x11d4a9a3a WTF::Function<void ()>::operator()() const
25  0x121247217 WebCore::MainThreadSharedTimer::fired()
26  0x1212f4c96 WebCore::timerFired(__CFRunLoopTimer*, void*)
27  0x7fff31ddf5d5 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__
28  0x7fff31ddf181 __CFRunLoopDoTimer
29  0x7fff31ddecba __CFRunLoopDoTimers
30  0x7fff31dc0304 __CFRunLoopRun
31  0x7fff31dbf855 CFRunLoopRunSpecific