Created attachment 455575 [details] crash log The following assertion failure is seen on iOS debug bots: ASSERTION FAILED: !m_queues.contains(key) /Volumes/Data/worker/ios-simulator-15-debug/build/Source/WebKit/Platform/IPC/MessageReceiveQueueMap.cpp(34) : void IPC::MessageReceiveQueueMap::addImpl(IPC::MessageReceiveQueueMap::StoreType &&, IPC::ReceiverName, uint64_t) 1 0x14219db09 WTFCrash 2 0x1246a8b4b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x125b30dfb IPC::MessageReceiveQueueMap::addImpl(std::__1::variant<IPC::MessageReceiveQueue*, std::__1::unique_ptr<IPC::MessageReceiveQueue, std::__1::default_delete<IPC::MessageReceiveQueue> > >&&, IPC::ReceiverName, unsigned long long) 4 0x125af7bbd IPC::MessageReceiveQueueMap::add(IPC::MessageReceiveQueue&, IPC::ReceiverName, unsigned long long) 5 0x125af7b53 IPC::Connection::addMessageReceiveQueue(IPC::MessageReceiveQueue&, IPC::ReceiverName, unsigned long long) 6 0x125b6c56d IPC::StreamServerConnectionBase::startReceivingMessagesImpl(IPC::ReceiverName)::$_2::operator()() const 7 0x125b6c4e9 WTF::Detail::CallableWrapper<IPC::StreamServerConnectionBase::startReceivingMessagesImpl(IPC::ReceiverName)::$_2, void>::call() 8 0x1421cb692 WTF::Function<void ()>::operator()() const 9 0x14221e7e8 void WTF::callOnMainAndWait<(WTF::MainStyle)1>(WTF::Function<void ()>&&) 10 0x14221e78d WTF::callOnMainRunLoopAndWait(WTF::Function<void ()>&&) 11 0x125b611dc IPC::StreamServerConnectionBase::startReceivingMessagesImpl(IPC::ReceiverName) 12 0x1252e703f IPC::StreamServerConnection::startReceivingMessages(IPC::ReceiverName) 13 0x1252e6955 WebKit::RemoteRenderingBackend::startListeningForIPC() https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/r291751%20(2042)/results.html
animations/crash-on-removing-animation.html
<rdar://problem/90731337>
fast/animation/request-animation-frame-during-modal.html fast/dom/Geolocation/window-close-crash.html fast/dom/intersection-observer-document-leak.html fast/dom/Window/Location/set-location-after-close.html fast/dom/Window/a-rel-noopener.html fast/dom/Window/area-rel-noopener.html fast/dom/Window/closure-access-after-navigation-window.html fast/dom/Window/dom-access-from-closure-window-with-gc.html fast/dom/Window/dom-access-from-closure-window.html fast/dom/lazy-image-loading-document-leak.html fast/dom/open-and-close-by-DOM.html fast/events/before-unload-navigate-different-window.html fast/events/before-unload-open-window.html fast/events/ios/tab-cycle.html fast/files/domurl-script-execution-context-crash.html
*** This bug has been marked as a duplicate of bug 237674 ***