228167 2021-07-21 15:38:39 -0700 [iOS Debug] media/media-fragments/TC0003.html is flaky crashing 2021-07-21 18:15:26 -0700 1 1 1 Unclassified WebKit Media WebKit Nightly Build iPhone / iPad Unspecified RESOLVED DUPLICATE 228038 InRadar P2 Normal --- 1 ayumi_kojima webkit-unassigned webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1778576 0 ayumi_kojima 2021-07-21 15:38:39 -0700 media/media-fragments/TC0003.html Is flaky crashing on iOS 14 E Simulator wk2 Debug. History: https://results.webkit.org/?suite=layout-tests&test=media%2Fmedia-usage-state-private-browsing.html The crash started showing in the history on around 5/13/2021. Test results are not available before 5/13/2021. I was not able to reproduce the crash on a simulator (iOS 15) on my local machine using run-webkit-tests --iphone-simulator --iterations 50 --debug -f --exit-after-n-failures 2 --exit-after-n-crashes-or-timeouts 2 media/media-fragments/TC0003.html It timed out instead. Crash log: ASSERTION FAILED: !m_messageReceiverMapCount /Volumes/Data/worker/ios-simulator-14-debug/build/Source/WebKit/Platform/IPC/MessageReceiver.h(41) : virtual IPC::MessageReceiver::~MessageReceiver() 1 0x4dd437a19 WTFCrash 2 0x4c00b0e3b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x4c00f5e48 IPC::MessageReceiver::~MessageReceiver() 4 0x4c1db6d3e WebKit::RemoteAudioHardwareListener::~RemoteAudioHardwareListener() 5 0x4c1db6e85 WebKit::RemoteAudioHardwareListener::~RemoteAudioHardwareListener() 6 0x4c1db6eec WebKit::RemoteAudioHardwareListener::~RemoteAudioHardwareListener() 7 0x4e62c5c1f std::__1::default_delete<WebCore::AudioHardwareListener>::operator()(WebCore::AudioHardwareListener*) const 8 0x4e62c5be2 WTF::RefCounted<WebCore::AudioHardwareListener, std::__1::default_delete<WebCore::AudioHardwareListener> >::deref() const 9 0x4e62c5b67 WTF::DefaultRefDerefTraits<WebCore::AudioHardwareListener>::derefIfNotNull(WebCore::AudioHardwareListener*) 10 0x4e792d304 WTF::RefPtr<WebCore::AudioHardwareListener, WTF::RawPtrTraits<WebCore::AudioHardwareListener>, WTF::DefaultRefDerefTraits<WebCore::AudioHardwareListener> >::operator=(std::nullptr_t) 11 0x4e792d2be WebCore::MediaSessionManagerCocoa::removeSession(WebCore::PlatformMediaSession&) 12 0x4ea07d8cf WebCore::PlatformMediaSession::stopSession() 13 0x4e93dbb1c WebCore::HTMLMediaElement::stop() 14 0x4e9025bcd auto WebCore::ScriptExecutionContext::stopActiveDOMObjects()::$_3::operator()<WebCore::ActiveDOMObject>(WebCore::ActiveDOMObject&) const 15 0x4e9025b63 WTF::Detail::CallableWrapper<WebCore::ScriptExecutionContext::stopActiveDOMObjects()::$_3, WebCore::ScriptExecutionContext::ShouldContinue, WebCore::ActiveDOMObject&>::call(WebCore::ActiveDOMObject&) 16 0x4e900e41a WTF::Function<WebCore::ScriptExecutionContext::ShouldContinue (WebCore::ActiveDOMObject&)>::operator()(WebCore::ActiveDOMObject&) const 17 0x4e900e270 WebCore::ScriptExecutionContext::forEachActiveDOMObject(WTF::Function<WebCore::ScriptExecutionContext::ShouldContinue (WebCore::ActiveDOMObject&)> const&) const 18 0x4e900e787 WebCore::ScriptExecutionContext::stopActiveDOMObjects() 19 0x4e8dcd7ef WebCore::Document::stopActiveDOMObjects() 20 0x4e8dcd58c WebCore::Document::commonTeardown() 21 0x4e8ddaa64 WebCore::Document::willBeRemovedFromFrame() 22 0x4e9d7bd73 WebCore::Frame::setView(WTF::RefPtr<WebCore::FrameView, WTF::RawPtrTraits<WebCore::FrameView>, WTF::DefaultRefDerefTraits<WebCore::FrameView> >&&) 23 0x4e9d812dd WebCore::Frame::createView(WebCore::IntSize const&, std::__1::optional<WebCore::Color> const&, WebCore::IntSize const&, WebCore::IntRect const&, bool, WebCore::ScrollbarMode, bool, WebCore::ScrollbarMode, bool) 24 0x4c2028197 WebKit::WebFrameLoaderClient::transitionToCommittedForNewPage() 25 0x4e9b3c084 WebCore::FrameLoader::transitionToCommitted(WebCore::CachedPage*) 26 0x4e9b3ac97 WebCore::FrameLoader::commitProvisionalLoad() 27 0x4e9ab40cc WebCore::DocumentLoader::commitIfReady() 28 0x4e9ab4931 WebCore::DocumentLoader::finishedLoading() 29 0x4e9ac1411 WebCore::DocumentLoader::maybeLoadEmpty() 30 0x4e9ac1595 WebCore::DocumentLoader::startLoadingMainResource() 31 0x4e9b6567d WebCore::FrameLoader::continueLoadAfterNavigationPolicy(WebCore::ResourceRequest const&, WebCore::FormState*, WebCore::NavigationPolicyDecision, WebCore::AllowNavigationToInvalidURL)::$_11::operator()() com.apple.WebKit.WebContent.Development terminated (pid 67975) because the process crashed 1778578 1 webkit-bug-importer 2021-07-21 15:39:03 -0700 <rdar://problem/80922039> 1778581 2 ayumi_kojima 2021-07-21 15:44:39 -0700 Updated test expectations https://trac.webkit.org/changeset/280164/webkit 1778625 3 ap 2021-07-21 18:15:26 -0700 *** This bug has been marked as a duplicate of bug 228038 ***