194502 2019-02-11 09:25:13 -0800 REGRESSION: [ Mac Debug ] ( r240358 ) Layout Test imported/w3c/web-platform-tests/IndexedDB/idbindex_openKeyCursor2.htm is a flaky Crash 2019-02-12 15:25:52 -0800 1 1 1 Unclassified WebKit Tools / Tests WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 194413 InRadar P2 Normal --- 1 tsavell webkit-unassigned jlewis3 lforschler ryanhaddad sihui_liu webkit-bug-importer oldest_to_newest 1504885 0 tsavell 2019-02-11 09:25:13 -0800 The following layout test is flaky on Mac Debug imported/w3c/web-platform-tests/IndexedDB/idbindex_openKeyCursor2.htm Probable cause: This test began crashing from https://trac.webkit.org/changeset/240358/webkit. Flakiness Dashboard: https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2FIndexedDB%2Fidbindex_openKeyCursor2.htm confirmed using command: run-webkit-tests --root debug-240358 imported/w3c/web-platform-tests/IndexedDB/idbindex_openKeyCursor2.htm --iterations 1000 -f --debug the test crashes on r240358 but not on r240357. Crash: 05:19:47.497 40595 worker/3 imported/w3c/web-platform-tests/IndexedDB/idbindex_openKeyCursor2.htm crashed, (stderr lines): 05:19:47.497 40595 ASSERTION FAILED: m_transactionOperationsInProgressQueue.first() == &operation 05:19:47.497 40595 ./Modules/indexeddb/IDBTransaction.cpp(1397) : void WebCore::IDBTransaction::operationCompletedOnClient(IDBClient::TransactionOperation &) 05:19:47.497 40595 1 0x39fbfaf39 WTFCrash 05:19:47.497 40595 2 0x38de9bb3b WTFCrashWithInfo(int, char const*, char const*, int) 05:19:47.497 40595 3 0x38f5fb938 WebCore::IDBTransaction::operationCompletedOnClient(WebCore::IDBClient::TransactionOperation&) 05:19:47.497 40595 4 0x38f5f1b46 WebCore::IDBClient::TransactionOperation::doComplete(WebCore::IDBResultData const&) 05:19:47.497 40595 5 0x38f5eedef WebCore::IDBTransaction::completedOperationTimerFired() 05:19:47.497 40595 6 0x38f618cc7 WTF::Function<void ()>::CallableWrapper<std::__1::__bind<void (WebCore::IDBTransaction::*&)(), WebCore::IDBTransaction*> >::call() 05:19:47.497 40595 7 0x38de9cfed WTF::Function<void ()>::operator()() const 05:19:47.497 40595 8 0x38def62a9 WebCore::Timer::fired() 05:19:47.497 40595 9 0x390e90767 WebCore::ThreadTimers::sharedTimerFiredInternal() 05:19:47.498 40595 10 0x390e97bc1 WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0::operator()() const 05:19:47.498 40595 11 0x390e97b79 WTF::Function<void ()>::CallableWrapper<WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0>::call() 05:19:47.498 40595 12 0x38de9cfed WTF::Function<void ()>::operator()() const 05:19:47.498 40595 13 0x390e6aa47 WebCore::MainThreadSharedTimer::fired() 05:19:47.498 40595 14 0x390ef08c9 WebCore::timerFired(__CFRunLoopTimer*, void*) 05:19:47.498 40595 15 0x7fff4b320704 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ 05:19:47.498 40595 16 0x7fff4b320384 __CFRunLoopDoTimer 05:19:47.498 40595 17 0x7fff4b31fe7a __CFRunLoopDoTimers 05:19:47.498 40595 18 0x7fff4b31761b __CFRunLoopRun 05:19:47.498 40595 19 0x7fff4b316a07 CFRunLoopRunSpecific 05:19:47.498 40595 20 0x7fff4a5f4d96 RunCurrentEventLoopInMode 05:19:47.498 40595 21 0x7fff4a5f4b06 ReceiveNextEventCommon 05:19:47.498 40595 22 0x7fff4a5f4884 _BlockUntilNextEventMatchingListInModeWithFilter 05:19:47.498 40595 23 0x7fff488a7a73 _DPSNextEvent 05:19:47.498 40595 24 0x7fff4903de34 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] 05:19:47.498 40595 25 0x7fff4889c885 -[NSApplication run] 05:19:47.498 40595 26 0x7fff4886ba72 NSApplicationMain 05:19:47.498 40595 27 0x7fff73a15f57 _xpc_objc_main 05:19:47.498 40595 28 0x7fff73a14baa xpc_main 05:19:47.498 40595 29 0x3885670c1 WebKit::XPCServiceMain(int, char const**) 05:19:47.498 40595 30 0x3883d623b WKXPCServiceMain 05:19:47.498 40595 31 0x106c79f5e main 1505307 1 tsavell 2019-02-12 11:37:34 -0800 This is most likely related to rdar://problem/47623109 1505308 2 webkit-bug-importer 2019-02-12 11:38:26 -0800 <rdar://problem/48008596> 1505442 3 sihui_liu 2019-02-12 15:25:52 -0800 (In reply to Truitt Savell from comment #1) > This is most likely related to rdar://problem/47623109 We already had a bug for this assertion failure. This was a pre-existing bug and r240358 made the bug crash more often so we could observe it on many tests. *** This bug has been marked as a duplicate of bug 194413 ***