222750 2021-03-04 10:51:32 -0800 [macOS] imported/w3c/web-platform-tests/html/semantics/scripting-1/the-script-element/css-module/css-module-worker-test.html is a flakey crash and failure 2021-04-23 11:54:36 -0700 1 1 1 Unclassified WebKit CSS WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=177680 InRadar P2 Normal --- 1 amir_mark webkit-unassigned cdumez koivisto simon.fraser webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1735925 0 amir_mark 2021-03-04 10:51:32 -0800 imported/w3c/web-platform-tests/html/semantics/scripting-1/the-script-element/css-module/css-module-worker-test.html Is a flakey failure on Big Sur Debug Wk1 and Wk2. It is also a flakey failure on Catalina WK1 and Wk2 It is also flakey crashing on Big Sur Debug Wk1, Catalina Debug WK1 and WK2 History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fscripting-1%2Fthe-script-element%2Fcss-module%2Fcss-module-worker-test.html Text Diff: --- /Volumes/Data/worker/bigsur-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/html/semantics/scripting-1/the-script-element/css-module/css-module-worker-test-expected.txt +++ /Volumes/Data/worker/bigsur-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/html/semantics/scripting-1/the-script-element/css-module/css-module-worker-test-actual.txt @@ -1,5 +1,7 @@ + +Harness Error (TIMEOUT), message = null PASS A static import CSS Module within a web worker should not load. -PASS A dynamic import CSS Module within a web worker should not load. +TIMEOUT A dynamic import CSS Module within a web worker should not load. Test timed out PASS A CSS Module within a web worker should not load. Crash Log: Thread 0:: Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x00007fff717b1dfa mach_msg_trap + 10 1 libsystem_kernel.dylib 0x00007fff717b2170 mach_msg + 60 2 com.apple.CoreFoundation 0x00007fff37607ef5 __CFRunLoopServiceMachPort + 247 3 com.apple.CoreFoundation 0x00007fff376069c2 __CFRunLoopRun + 1319 4 com.apple.CoreFoundation 0x00007fff37605e3e CFRunLoopRunSpecific + 462 5 DumpRenderTree 0x000000010667fc62 runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) + 3218 (DumpRenderTree.mm:2029) 1735927 1 webkit-bug-importer 2021-03-04 10:52:14 -0800 <rdar://problem/75046557> 1736506 2 ap 2021-03-05 13:26:32 -0800 The crash is on a different thread, and might be caused by a preceding test. This one does use workers though. ASSERTION FAILED: m_globalScope->hasOneRef() ./workers/WorkerOrWorkletThread.cpp(154) : void WebCore::WorkerOrWorkletThread::workerOrWorkletThread() 1 0x362156129 WTFCrash 2 0x3406be43b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x3458386ea WebCore::WorkerOrWorkletThread::workerOrWorkletThread() 4 0x34586eeeb WebCore::WorkerThread::createThread()::$_0::operator()() const 5 0x34586ee9e WTF::Detail::CallableWrapper<WebCore::WorkerThread::createThread()::$_0, void>::call() 6 0x362181802 WTF::Function<void ()>::operator()() const 7 0x362246298 WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) 8 0x362254128 WTF::wtfThreadEntryPoint(void*) 1746602 3 amir_mark 2021-04-02 12:15:54 -0700 This is also flakey failing on EWS: https://ews-build.webkit.org/#/builders/57/builds/4983 1746675 4 amir_mark 2021-04-02 14:33:15 -0700 Updated test expectations: https://trac.webkit.org/changeset/275441/webkit 1753666 5 ryanhaddad 2021-04-23 11:54:36 -0700 The flakiness isn't limited to debug. Updated test expectations in r276508