Bug 285954 – [macOS Debug] ASSERTION FAILED: Unsafe to ref/deref from different threads in inspector/worker/runtime-basic-subworker.html (failure in EWS)

• Component: Web Inspector
• Status: NEW

[Marta Darbinyan]

inspector/worker/runtime-basic-subworker.html test is flaky crashing in macOS queue and flaky failure in EWS. 

ASSERTION FAILED: Unsafe to ref/deref from different threads
m_isOwnedByMainThread == isMainThread()
/Volumes/Data/worker/Apple-Ventura-Debug-Build/build/WebKitBuild/Debug/usr/local/include/wtf/RefCounted.h(119) : void WTF::RefCountedBase::applyRefDerefThreadingCheck() const
1   0x128aa71fc WTF::RefCountedBase::applyRefDerefThreadingCheck() const
2   0x128aa9524 WTF::RefCountedBase::ref() const
3   0x12de88f38 WTF::DefaultRefDerefTraits<WebCore::WorkerInspectorProxy>::ref(WebCore::WorkerInspectorProxy&)
4   0x12de88f08 WTF::Ref<WebCore::WorkerInspectorProxy, WTF::RawPtrTraits<WebCore::WorkerInspectorProxy>, WTF::DefaultRefDerefTraits<WebCore::WorkerInspectorProxy>>::Ref(WebCore::WorkerInspectorProxy&)
5   0x12de83ed4 WTF::Ref<WebCore::WorkerInspectorProxy, WTF::RawPtrTraits<WebCore::WorkerInspectorProxy>, WTF::DefaultRefDerefTraits<WebCore::WorkerInspectorProxy>>::Ref(WebCore::WorkerInspectorProxy&)
6   0x12de8a594 WebCore::WorkerWorkerAgent::connectToAllWorkerInspectorProxies()
7   0x12de68e6c WebCore::InspectorWorkerAgent::enable()
8   0x11fe2dfb0 Inspector::WorkerBackendDispatcher::enable(long, WTF::RefPtr<WTF::JSONImpl::Object, WTF::RawPtrTraits<WTF::JSONImpl::Object>, WTF::DefaultRefDerefTraits<WTF::JSONImpl::Object>>&&)
9   0x11fe2dd44 Inspector::WorkerBackendDispatcher::dispatch(long, WTF::String const&, WTF::Ref<WTF::JSONImpl::Object, WTF::RawPtrTraits<WTF::JSONImpl::Object>, WTF::DefaultRefDerefTraits<WTF::JSONImpl::Object>>&&)
10  0x11fdea38c Inspector::BackendDispatcher::dispatch(WTF::String const&)
11  0x12dd26104 WebCore::WorkerInspectorController::dispatchMessageFromFrontend(WTF::String const&)
12  0x12fbcba18 WebCore::WorkerInspectorProxy::sendMessageToWorkerInspectorController(WTF::String const&)::$_14::operator()(WebCore::ScriptExecutionContext&) const
13  0x12fbcb960 WTF::Detail::CallableWrapper<WebCore::WorkerInspectorProxy::sendMessageToWorkerInspectorController(WTF::String const&)::$_14, void, WebCore::ScriptExecutionContext&>::call(WebCore::ScriptExecutionContext&)
14  0x12b65c934 WTF::Function<void (WebCore::ScriptExecutionContext&)>::operator()(WebCore::ScriptExecutionContext&) const
15  0x12c0926bc WebCore::ScriptExecutionContext::Task::performTask(WebCore::ScriptExecutionContext&)
16  0x12fbe28a4 WebCore::WorkerDedicatedRunLoop::Task::performTask(WebCore::WorkerOrWorkletGlobalScope*)
17  0x12fbe1d6c WebCore::WorkerDedicatedRunLoop::runInMode(WebCore::WorkerOrWorkletGlobalScope*, WebCore::ModePredicate const&)
18  0x12fbe02a4 WebCore::WorkerDedicatedRunLoop::run(WebCore::WorkerOrWorkletGlobalScope*)
19  0x12fbe01d8 WebCore::WorkerOrWorkletThread::runEventLoop()
20  0x12fbe05ec WebCore::WorkerOrWorkletThread::workerOrWorkletThread()
21  0x12fc05b20 WebCore::WorkerThread::createThread()::$_18::operator()() const
22  0x12fc05acc WTF::Detail::CallableWrapper<WebCore::WorkerThread::createThread()::$_18, void>::call()
23  0x11e5be774 WTF::Function<void ()>::operator()() const
24  0x11e701978 WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*)
25  0x11e70e184 WTF::wtfThreadEntryPoint(void*)
26  0x19a25ffa8 _pthread_start
27  0x19a25ada0 thread_start

Test result:
https://build.webkit.org/results/Apple-Sonoma-Debug-WK2-Tests/288693@main%20(3003)/results.html

History:
https://results.webkit.org/?suite=layout-tests&test=inspector%2Fworker%2Fruntime-basic-subworker.html&style=debug

[Radar WebKit Bug Importer]

<rdar://problem/142914104>

[EWS]

Test gardening commit 288899@main (d594f4bd2b9d): <https://commits.webkit.org/288899@main>

Reviewed commits have been landed. Closing PR #39032 and removing active labels.