The follow 2 imported/w3c/web-platform-tests/html/canvas/offscreen/ tests: imported/w3c/web-platform-tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside3.worker.html imported/w3c/web-platform-tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.double.worker.html are flaky crashes on macOS Debug running on Intel only. HISTORY: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fcanvas%2Foffscreen%2Ffill-and-stroke-styles%2F2d.gradient.radial.inside3.worker.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fcanvas%2Foffscreen%2Fpath-objects%2F2d.path.roundrect.2.radii.2.double.worker.html CRASH LOG / STDERR TEXT: ASSERTION FAILED: !hasPendingFlush() /Volumes/Data/worker/Apple-Ventura-Debug-Build/build/Source/WebKit/WebProcess/GPU/graphics/RemoteImageBufferProxy.cpp(334) : void WebKit::RemoteImageBufferProxy::prepareForBackingStoreChange() 1 0x563cade79 WTFCrash 2 0x54d40682b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x54f6952e0 WebKit::RemoteImageBufferProxy::prepareForBackingStoreChange() 4 0x54f6970d4 WebKit::RemoteImageBufferProxy::sinkIntoSerializedImageBuffer() 5 0x528601731 WebCore::ImageBuffer::sinkIntoSerializedImageBuffer(WTF::RefPtr<WebCore::ImageBuffer, WTF::RawPtrTraits<WebCore::ImageBuffer>, WTF::DefaultRefDerefTraits<WebCore::ImageBuffer> >&&) 6 0x5277174a3 WebCore::OffscreenCanvas::commitToPlaceholderCanvas() 7 0x527729304 WebCore::OffscreenCanvas::scheduleCommitToPlaceholderCanvas()::$_2::operator()(WebCore::ScriptExecutionContext&) const 8 0x527729251 WTF::Detail::CallableWrapper<WebCore::OffscreenCanvas::scheduleCommitToPlaceholderCanvas()::$_2, void, WebCore::ScriptExecutionContext&>::call(WebCore::ScriptExecutionContext&) 9 0x5263592a7 WTF::Function<void (WebCore::ScriptExecutionContext&)>::operator()(WebCore::ScriptExecutionContext&) const 10 0x526349d7d WebCore::ScriptExecutionContext::Task::performTask(WebCore::ScriptExecutionContext&) 11 0x5296b53cd WebCore::WorkerDedicatedRunLoop::Task::performTask(WebCore::WorkerOrWorkletGlobalScope*) 12 0x5296b48a1 WebCore::WorkerDedicatedRunLoop::runInMode(WebCore::WorkerOrWorkletGlobalScope*, WebCore::ModePredicate const&) 13 0x5296b2e95 WebCore::WorkerDedicatedRunLoop::run(WebCore::WorkerOrWorkletGlobalScope*) 14 0x5296b2e34 WebCore::WorkerOrWorkletThread::runEventLoop() 15 0x5296b3213 WebCore::WorkerOrWorkletThread::workerOrWorkletThread() 16 0x5296de8c8 WebCore::WorkerThread::createThread()::$_17::operator()() const 17 0x5296de869 WTF::Detail::CallableWrapper<WebCore::WorkerThread::createThread()::$_17, void>::call() 18 0x563cde082 WTF::Function<void ()>::operator()() const 19 0x563dd4d18 WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) 20 0x563de2255 WTF::wtfThreadEntryPoint(void*) 21 0x7ff805e1f259 _pthread_start 22 0x7ff805e1ac7b thread_start com.apple.WebKit.WebContent.Development terminated (pid 33280) for reason: crash LEAK: 1 WebPageProxy
I was able to replicate this crash on Ventura ToT running on Intel as follows: run-webkit-tests imported/w3c/web-platform-tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.radial.inside3.worker.html imported/w3c/web-platform-tests/html/canvas/offscreen/path-objects/2d.path.roundrect.2.radii.2.double.worker.html
<rdar://problem/107063975>