fast/events/before-unload-remove-itself.html crashes with async policy delegates: Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000080 Exception Note: EXC_CORPSE_NOTIFY Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [0] VM Regions Near 0x80: --> __TEXT 0000000100619000-000000010061b000 [ 8K] r-x/rwx SM=COW /Volumes/VOLUME/*/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent.Development Application Specific Information: CRASHING TEST: fast/events/before-unload-remove-itself.html Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.WebCore 0x000000015a504e9c WebCore::PolicyChecker::loadType() const + 12 (PolicyChecker.h:70) 1 com.apple.WebCore 0x000000015a505231 WebCore::FrameLoader::continueLoadAfterNavigationPolicy(WebCore::ResourceRequest const&, WebCore::FormState*, bool, WebCore::AllowNavigationToInvalidURL) + 705 (FrameLoader.cpp:3178) 2 com.apple.WebCore 0x000000015a520b88 WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*, WebCore::FrameLoadType, WebCore::FormState*, WebCore::AllowNavigationToInvalidURL)::$_5::operator()(WebCore::ResourceRequest const&, WebCore::FormState*, bool) const + 72 (FrameLoader.cpp:1537) 3 com.apple.WebCore 0x000000015a520b12 WTF::Function<void (WebCore::ResourceRequest&&, WebCore::FormState*, bool)>::CallableWrapper<WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*, WebCore::FrameLoadType, WebCore::FormState*, WebCore::AllowNavigationToInvalidURL)::$_5>::call(WebCore::ResourceRequest&&, WebCore::FormState*, bool) + 98 (Function.h:101) 4 com.apple.WebCore 0x000000015a550f2d WTF::Function<void (WebCore::ResourceRequest&&, WebCore::FormState*, bool)>::operator()(WebCore::ResourceRequest&&, WebCore::FormState*, bool) const + 221 (Function.h:56) 5 com.apple.WebCore 0x000000015a5439e9 WTF::CompletionHandler<void (WebCore::ResourceRequest&&, WebCore::FormState*, bool)>::operator()(WebCore::ResourceRequest&&, WebCore::FormState*, bool) const + 185 (CompletionHandler.h:60) 6 com.apple.WebCore 0x000000015a553486 WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest&&, bool, WebCore::DocumentLoader*, WebCore::FormState*, WTF::CompletionHandler<void (WebCore::ResourceRequest&&, WebCore::FormState*, bool)>&&)::$_6::operator()(WebCore::PolicyAction) + 662 (PolicyChecker.cpp:165) 7 com.apple.WebCore 0x000000015a55306a WTF::Function<void (WebCore::PolicyAction)>::CallableWrapper<WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest&&, bool, WebCore::DocumentLoader*, WebCore::FormState*, WTF::CompletionHandler<void (WebCore::ResourceRequest&&, WebCore::FormState*, bool)>&&)::$_6>::call(WebCore::PolicyAction) + 42 (Function.h:101) 8 com.apple.WebKit 0x00000001007b73b1 WTF::Function<void (WebCore::PolicyAction)>::operator()(WebCore::PolicyAction) const + 177 (Function.h:56) 9 com.apple.WebKit 0x0000000100f4dff7 WebKit::WebFrame::didReceivePolicyDecision(unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID, std::optional<WebKit::WebsitePoliciesData>&&) + 423 (WebFrame.cpp:282) 10 com.apple.WebKit 0x000000010107a6fc WebKit::WebPage::didReceivePolicyDecision(unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID const&, std::optional<WebKit::WebsitePoliciesData>&&) + 156 (WebPage.cpp:2829) 11 com.apple.WebKit 0x000000010110fd97 void IPC::callMemberFunctionImpl<WebKit::WebPage, void (WebKit::WebPage::*)(unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID const&, std::optional<WebKit::WebsitePoliciesData>&&), std::__1::tuple<unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID, std::optional<WebKit::WebsitePoliciesData> >, 0ul, 1ul, 2ul, 3ul, 4ul, 5ul>(WebKit::WebPage*, void (WebKit::WebPage::*)(unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID const&, std::optional<WebKit::WebsitePoliciesData>&&), std::__1::tuple<unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID, std::optional<WebKit::WebsitePoliciesData> >&&, std::__1::integer_sequence<unsigned long, 0ul, 1ul, 2ul, 3ul, 4ul, 5ul>) + 439 (HandleMessage.h:41) 12 com.apple.WebKit 0x000000010110ee00 void IPC::callMemberFunction<WebKit::WebPage, void (WebKit::WebPage::*)(unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID const&, std::optional<WebKit::WebsitePoliciesData>&&), std::__1::tuple<unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID, std::optional<WebKit::WebsitePoliciesData> >, std::__1::integer_sequence<unsigned long, 0ul, 1ul, 2ul, 3ul, 4ul, 5ul> >(std::__1::tuple<unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID, std::optional<WebKit::WebsitePoliciesData> >&&, WebKit::WebPage*, void (WebKit::WebPage::*)(unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID const&, std::optional<WebKit::WebsitePoliciesData>&&)) + 96 (HandleMessage.h:47) 13 com.apple.WebKit 0x00000001010fd21f void IPC::handleMessage<Messages::WebPage::DidReceivePolicyDecision, WebKit::WebPage, void (WebKit::WebPage::*)(unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID const&, std::optional<WebKit::WebsitePoliciesData>&&)>(IPC::Decoder&, WebKit::WebPage*, void (WebKit::WebPage::*)(unsigned long long, unsigned long long, WebCore::PolicyAction, unsigned long long, WebKit::DownloadID const&, std::optional<WebKit::WebsitePoliciesData>&&)) + 383 (HandleMessage.h:127) 14 com.apple.WebKit 0x00000001010f4c12 WebKit::WebPage::didReceiveWebPageMessage(IPC::Connection&, IPC::Decoder&) + 5058 (WebPageMessageReceiver.cpp:673) 15 com.apple.WebKit 0x00000001010804ce WebKit::WebPage::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 510 (WebPage.cpp:3938) 16 com.apple.WebKit 0x0000000101080514 non-virtual thunk to WebKit::WebPage::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 52 17 com.apple.WebKit 0x0000000100885558 IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) + 456 (MessageReceiverMap.cpp:124) 18 com.apple.WebKit 0x00000001012c7b6d WebKit::WebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 61 (WebProcess.cpp:638) 19 com.apple.WebKit 0x00000001007787c3 IPC::Connection::dispatchMessage(IPC::Decoder&) + 51 (Connection.cpp:908) 20 com.apple.WebKit 0x000000010076dda8 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) + 712 21 com.apple.WebKit 0x0000000100778dca IPC::Connection::dispatchOneMessage() + 1530 (Connection.cpp:965) 22 com.apple.WebKit 0x000000010079128d IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14::operator()() + 29 (Connection.cpp:902) 23 com.apple.WebKit 0x00000001007911e9 WTF::Function<void ()>::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14>::call() + 25 (Function.h:101) 24 com.apple.JavaScriptCore 0x0000000168a7cb1b WTF::Function<void ()>::operator()() const + 139 (Function.h:56) 25 com.apple.JavaScriptCore 0x0000000168ac19e3 WTF::RunLoop::performWork() + 211 (RunLoop.cpp:107) 26 com.apple.JavaScriptCore 0x0000000168ac2284 WTF::RunLoop::performWork(void*) + 36 (RunLoopCF.cpp:38) 27 com.apple.CoreFoundation 0x00007fff4e1f2ca1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 28 com.apple.CoreFoundation 0x00007fff4e2ac69c __CFRunLoopDoSource0 + 108 29 com.apple.CoreFoundation 0x00007fff4e1d57e0 __CFRunLoopDoSources0 + 208 30 com.apple.CoreFoundation 0x00007fff4e1d4c5d __CFRunLoopRun + 1293 31 com.apple.CoreFoundation 0x00007fff4e1d44c3 CFRunLoopRunSpecific + 483 32 com.apple.HIToolbox 0x00007fff4d4bfd86 RunCurrentEventLoopInMode + 286 33 com.apple.HIToolbox 0x00007fff4d4bfaf6 ReceiveNextEventCommon + 613 34 com.apple.HIToolbox 0x00007fff4d4bf874 _BlockUntilNextEventMatchingListInModeWithFilter + 64 35 com.apple.AppKit 0x00007fff4b745c17 _DPSNextEvent + 2085 36 com.apple.AppKit 0x00007fff4bedbf04 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044 37 com.apple.AppKit 0x00007fff4b73aa29 -[NSApplication run] + 764 38 com.apple.AppKit 0x00007fff4b709c02 NSApplicationMain + 804 39 libxpc.dylib 0x00007fff76ea9f93 _xpc_objc_main + 580 40 libxpc.dylib 0x00007fff76ea8be6 xpc_main + 417 41 com.apple.WebKit.WebContent 0x000000010061a13b main + 1195 (XPCServiceMain.mm:148) 42 libdyld.dylib 0x00007fff76b5a015 start + 1