300392 2025-10-08 09:13:01 -0700 REGRESSION(301191@main): [macOS Debug] ASSERTION FAILED: m_thread.ptr() == &Thread::currentSingleton() 2025-10-08 09:38:36 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 300360 1 darbinyan webkit-unassigned webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 2149473 0 darbinyan 2025-10-08 09:13:01 -0700 Multiple tests are crashing with assertion after 301191@main. ASSERTION FAILED: m_thread.ptr() == &Thread::currentSingleton() /Volumes/Data/worker/macOS-Sequoia-Debug-WK2-Tests-EWS/build/WebKitBuild/Debug/usr/local/include/wtf/SingleThreadIntegralWrapper.h(54) : void WTF::SingleThreadIntegralWrapper<unsigned int>::assertThread() const [IntegralType = unsigned int] 1 0x30025b324 WTF::SingleThreadIntegralWrapper<unsigned int>::assertThread() const 2 0x30025b29c WTF::SingleThreadIntegralWrapper<unsigned int>::operator++() 3 0x30025b274 WTF::CanMakeCheckedPtrBase<WTF::SingleThreadIntegralWrapper<unsigned int>, unsigned int>::incrementCheckedPtrCount() const 4 0x303a2a8e0 WTF::CheckedPtr<WebCore::RangeResponseGeneratorDataTaskData, WTF::RawPtrTraits<WebCore::RangeResponseGeneratorDataTaskData>>::refIfNotNull() 5 0x303a2a89c WTF::CheckedPtr<WebCore::RangeResponseGeneratorDataTaskData, WTF::RawPtrTraits<WebCore::RangeResponseGeneratorDataTaskData>>::CheckedPtr(WebCore::RangeResponseGeneratorDataTaskData*) 6 0x3039ffe24 WTF::CheckedPtr<WebCore::RangeResponseGeneratorDataTaskData, WTF::RawPtrTraits<WebCore::RangeResponseGeneratorDataTaskData>>::CheckedPtr(WebCore::RangeResponseGeneratorDataTaskData*) 7 0x303a004fc WebCore::RangeResponseGenerator::giveResponseToTaskIfBytesInRangeReceived(WebCoreNSURLSessionDataTask*, WebCore::ParsedRequestRange const&, std::__1::optional<unsigned long>, WebCore::RangeResponseGenerator::Data const&)::$_0::operator()() const 8 0x303a2b7f0 WebCore::RangeResponseGenerator::giveResponseToTaskIfBytesInRangeReceived(WebCoreNSURLSessionDataTask*, WebCore::ParsedRequestRange const&, std::__1::optional<unsigned long>, WebCore::RangeResponseGenerator::Data const&)::$_1::operator()(WebCore::ShouldContinuePolicyCheck) 9 0x303a2b670 WTF::Detail::CallableWrapper<WebCore::RangeResponseGenerator::giveResponseToTaskIfBytesInRangeReceived(WebCoreNSURLSessionDataTask*, WebCore::ParsedRequestRange const&, std::__1::optional<unsigned long>, WebCore::RangeResponseGenerator::Data const&)::$_1, void, WebCore::ShouldContinuePolicyCheck>::call(WebCore::ShouldContinuePolicyCheck) 10 0x303484ea4 WTF::Function<void (WebCore::ShouldContinuePolicyCheck)>::operator()(WebCore::ShouldContinuePolicyCheck) const 11 0x303468888 WTF::CompletionHandler<void (WebCore::ShouldContinuePolicyCheck)>::operator()(WebCore::ShouldContinuePolicyCheck) 12 0x3087aac7c -[WebCoreNSURLSessionDataTask resource:receivedResponse:completionHandler:]::$_13::operator()()::'lambda'(NSURLSessionResponseDisposition)::operator()(NSURLSessionResponseDisposition)::'lambda'()::operator()() 13 0x3087aaaec WTF::Detail::CallableWrapper<-[WebCoreNSURLSessionDataTask resource:receivedResponse:completionHandler:]::$_13::operator()()::'lambda'(NSURLSessionResponseDisposition)::operator()(NSURLSessionResponseDisposition)::'lambda'(), void>::call() 14 0x13003ef38 WTF::Function<void ()>::operator()() const 15 0x130217ba4 WTF::(anonymous namespace)::DispatchWorkItem::operator()() 16 0x13021685c void WTF::dispatchWorkItem<WTF::(anonymous namespace)::DispatchWorkItem>(void*) 17 0x19e4dc85c _dispatch_client_callout 18 0x19e4cb350 _dispatch_lane_serial_drain 19 0x19e4cbe2c _dispatch_lane_invoke 20 0x19e4d6264 _dispatch_root_queue_drain_deferred_wlh 21 0x19e4d5ae8 _dispatch_workloop_worker_thread 22 0x19e676e64 _pthread_wqthread 23 0x19e675b74 start_wqthread com.apple.WebKit.GPU.Development terminated (pid 61262) for reason: crash Tets history: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=http%2Ftests%2Fsecurity%2Fvideo-cross-origin-caching.html&test=http%2Fwpt%2Ffetch%2Fdnt-header-after-redirection.html&test=imported%2Fw3c%2Fweb-platform-tests%2Ffetch%2Frange%2Fnon-matching-range-response.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Finfrastructure%2Furls%2Fresolving-urls%2Fquery-encoding%2Futf-8.html%3Finclude%3Dloading&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Finfrastructure%2Furls%2Fresolving-urls%2Fquery-encoding%2Fwindows-1251.html%3Finclude%3Dloading&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Finfrastructure%2Furls%2Fresolving-urls%2Fquery-encoding%2Fwindows-1252.html%3Finclude%3Dloading&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Floading-the-media-resource%2Fresource-selection-invoke-insert-source-networkState.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Floading-the-media-resource%2Fresource-selection-pointer-insert-br.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Floading-the-media-resource%2Fresource-selection-pointer-remove-source-after.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Floading-the-media-resource%2Fresource-selection-pointer-remove-text.html Test results: https://ews-build.webkit.org/#/builders/122/builds/39828 2149474 1 webkit-bug-importer 2025-10-08 09:15:24 -0700 <rdar://problem/162205419> 2149480 2 ews-feeder 2025-10-08 09:38:33 -0700 Committed 301213@main (785804b19762): <https://commits.webkit.org/301213@main> Reviewed commits have been landed. Closing PR #52013 and removing active labels.