221414 2021-02-04 09:14:16 -0800 ASSERTION FAILED: m_clientCounts.contains(contextId) in WebKit::VideoFullscreenManager::removeClientForContext on media/video-presentation-mode.html 2022-02-13 19:17:28 -0800 1 1 1 Unclassified WebKit Media WebKit Nightly Build Unspecified Unspecified RESOLVED INVALID InRadar P2 Normal --- 1 jenner webkit-unassigned ap bfulgham peng.liu6 webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1725651 0 jenner 2021-02-04 09:14:16 -0800 media/video-presentation-mode.html is crashing in Debug on Big Sur in Wk2. HISTORY URL: https://results.webkit.org/?suite=layout-tests&test=media%2Fvideo-presentation-mode.html&platform=mac CRASH LOG URL: https://build.webkit.org/results/Apple-BigSur-Debug-WK2-Tests/r272368%20(1072)/media/video-presentation-mode-crash-log.txt CRASH LOG TEXT: No crash log found for com.apple.WebKit.WebContent.Development:36104. stdout: stderr: ASSERTION FAILED: m_clientCounts.contains(contextId) /Volumes/Data/slave/bigsur-debug/build/Source/WebKit/WebProcess/cocoa/VideoFullscreenManager.mm(209) : void WebKit::VideoFullscreenManager::removeClientForContext(WebKit::PlaybackSessionContextIdentifier) 1 0x58ba956e9 WTFCrash 2 0x558004f1b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x55998b66c WebKit::VideoFullscreenManager::removeClientForContext(WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType>) 4 0x55998eafc WebKit::VideoFullscreenManager::didCleanupFullscreen(WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType>) 5 0x559e4b138 void IPC::callMemberFunctionImpl<WebKit::VideoFullscreenManager, void (WebKit::VideoFullscreenManager::*)(WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType>), std::__1::tuple<WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType> >, 0ul>(WebKit::VideoFullscreenManager*, void (WebKit::VideoFullscreenManager::*)(WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType>), std::__1::tuple<WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType> >&&, std::__1::integer_sequence<unsigned long, 0ul>) 6 0x559e4b070 void IPC::callMemberFunction<WebKit::VideoFullscreenManager, void (WebKit::VideoFullscreenManager::*)(WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType>), std::__1::tuple<WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType> >, std::__1::integer_sequence<unsigned long, 0ul> >(std::__1::tuple<WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType> >&&, WebKit::VideoFullscreenManager*, void (WebKit::VideoFullscreenManager::*)(WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType>)) 7 0x559e492e6 void IPC::handleMessage<Messages::VideoFullscreenManager::DidCleanupFullscreen, WebKit::VideoFullscreenManager, void (WebKit::VideoFullscreenManager::*)(WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType>)>(IPC::Decoder&, WebKit::VideoFullscreenManager*, void (WebKit::VideoFullscreenManager::*)(WTF::ObjectIdentifier<WebKit::PlaybackSessionContextIdentifierType>)) 8 0x559e48aa8 WebKit::VideoFullscreenManager::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 9 0x5584eb491 IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) 10 0x5599e0367 WebKit::WebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 11 0x558084b7a IPC::Connection::dispatchMessage(IPC::Decoder&) 12 0x558085ca0 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) 13 0x558086330 IPC::Connection::dispatchOneIncomingMessage() 14 0x5580a6d78 IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_8::operator()() 15 0x5580a6c8e WTF::Detail::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_8, void>::call() 16 0x58bac0ff2 WTF::Function<void ()>::operator()() const 17 0x58bb42b95 WTF::RunLoop::performWork() 18 0x58bb47431 WTF::RunLoop::performWork(void*) 19 0x7fff2046ba0c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ 20 0x7fff2046b974 __CFRunLoopDoSource0 21 0x7fff2046b6ef __CFRunLoopDoSources0 22 0x7fff2046a121 __CFRunLoopRun 23 0x7fff204696ce CFRunLoopRunSpecific 24 0x7fff211f6fa1 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] 25 0x7fff21285384 -[NSRunLoop(NSRunLoop) run] 26 0x7fff200c03dd _xpc_objc_main 27 0x7fff200bfe65 _xpc_copy_xpcservice_dictionary 28 0x558d20a2c WebKit::XPCServiceMain(int, char const**) 29 0x55a2e440b WKXPCServiceMain 30 0x103ef5ea2 main 31 0x7fff2038e621 start LEAK: 1 WebPageProxy 1725660 1 webkit-bug-importer 2021-02-04 09:32:14 -0800 <rdar://problem/73984763> 1726503 2 ap 2021-02-07 12:11:09 -0800 This appears to be a rare crash, but it happened more than once, and on Catalina too.