302559 2025-11-14 16:43:50 -0800 REGRESSION(303022@main): [macOS Release wk1] webaudio/audiobuffersource-not-gced-until-ended.html is a flaky crash 2025-11-21 13:29:29 -0800 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 302416 1 darbinyan jbedard webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 2158942 0 darbinyan 2025-11-14 16:43:50 -0800 The following is flaky crash in wk1 macOS Release after 303022@main. webaudio/audiobuffersource-not-gced-until-ended.html Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.WebCore 0x11d5227bc WebCore::InstrumentingAgents::~InstrumentingAgents() 1 com.apple.WebCore 0x11d5189cc WebCore::CommandLineAPIHost::~CommandLineAPIHost() 2 com.apple.WebCore 0x11bc4a390 WebCore::JSCommandLineAPIHost::destroy(JSC::JSCell*) 3 com.apple.JavaScriptCore 0x109e10838 void JSC::MarkedBlock::Handle::specializedSweep<true, (JSC::MarkedBlock::Handle::EmptyMode)0, (JSC::MarkedBlock::Handle::SweepMode)0, (JSC::MarkedBlock::Handle::SweepDestructionMode)1, (JSC::MarkedBlock::Handle::ScribbleMode)0, (JSC::MarkedBlock::Handle::NewlyAllocatedMode)1, (JSC::MarkedBlock::Handle::MarksMode)0, JSC::JSDestructibleObjectDestroyFunc>(JSC::FreeList*, JSC::MarkedBlock::Handle::EmptyMode, JSC::MarkedBlock::Handle::SweepMode, JSC::MarkedBlock::Handle::SweepDestructionMode, JSC::MarkedBlock::Handle::ScribbleMode, JSC::MarkedBlock::Handle::NewlyAllocatedMode, JSC::MarkedBlock::Handle::MarksMode, JSC::JSDestructibleObjectDestroyFunc const&) 4 com.apple.JavaScriptCore 0x109e0f21c void JSC::MarkedBlock::Handle::finishSweepKnowingHeapCellType<JSC::JSDestructibleObjectDestroyFunc>(JSC::FreeList*, JSC::JSDestructibleObjectDestroyFunc const&)::'lambda'()::operator()() const 5 com.apple.JavaScriptCore 0x109e0614c void JSC::MarkedBlock::Handle::finishSweepKnowingHeapCellType<JSC::JSDestructibleObjectDestroyFunc>(JSC::FreeList*, JSC::JSDestructibleObjectDestroyFunc const&) 6 com.apple.JavaScriptCore 0x109e0602c JSC::JSDestructibleObjectHeapCellType::finishSweep(JSC::MarkedBlock::Handle&, JSC::FreeList*) const 7 com.apple.JavaScriptCore 0x109a41454 JSC::MarkedBlock::Handle::sweep(JSC::FreeList*) 8 com.apple.JavaScriptCore 0x1099f7640 JSC::BlockDirectory::sweep() 9 com.apple.JavaScriptCore 0x109a43840 JSC::MarkedSpace::sweepBlocks() 10 com.apple.JavaScriptCore 0x109a050ec JSC::Heap::sweepSynchronously() 11 com.apple.JavaScriptCore 0x109a05920 JSC::Heap::collectNow(JSC::Synchronousness, JSC::GCRequest) 12 com.apple.WebCore 0x11cca3c34 WebCore::GarbageCollectionController::garbageCollectNow() 13 DumpRenderTree 0x1024ecae8 collectCallback(OpaqueJSContext const*, OpaqueJSValue*, OpaqueJSValue*, unsigned long, OpaqueJSValue const* const*, OpaqueJSValue const**) 14 com.apple.JavaScriptCore 0x10937a498 long long JSC::APICallbackFunction::callImpl<JSC::JSCallbackFunction>(JSC::JSGlobalObject*, JSC::CallFrame*) 15 0x30002c030 Test result: https://build.webkit.org/#/builders/1701/builds/126 Test history: https://results.webkit.org/?suite=layout-tests&test=webaudio%2Faudiobuffersource-not-gced-until-ended.html&flavor=wk1&style=release 2158943 1 webkit-bug-importer 2025-11-14 16:44:11 -0800 <rdar://problem/164761891> 2158944 2 ews-feeder 2025-11-14 17:08:59 -0800 Test gardening commit 303061@main (9948a6f14892): <https://commits.webkit.org/303061@main> Reviewed commits have been landed. Closing PR #53978 and removing active labels. 2158971 3 ews-feeder 2025-11-14 23:11:56 -0800 Committed 303067@main (f84db56e5e00): <https://commits.webkit.org/303067@main> Reviewed commits have been landed. Closing PR #53979 and removing active labels. 2159294 4 ap 2025-11-17 09:24:31 -0800 The test expectation still needs to be removed. 2160065 5 jbedard 2025-11-19 14:47:41 -0800 Re-opening for pull request https://github.com/WebKit/WebKit/pull/54209 2160067 6 ews-feeder 2025-11-19 14:54:33 -0800 Test gardening commit 303285@main (c566ed2945f7): <https://commits.webkit.org/303285@main> Reviewed commits have been landed. Closing PR #54209 and removing active labels.