Bug 310384 – [macOS debug] inspector/timeline/timeline-event-EventDispatch.html is a flaky crash/timeout

• Component: New Bugs
• Status: NEW

[Diego De La Toba]

inspector/timeline/timeline-event-EventDispatch.html is a flaky crash/timeout on macOS debug.


HISTORY:
https://results.webkit.org/?suite=layout-tests&test=inspector%2Ftimeline%2Ftimeline-event-EventDispatch.html


DIFF:
--- /Volumes/Data/Builds/Mac/Debug/TestBuild309622@main/layout-test-results/inspector/timeline/timeline-event-EventDispatch-expected.txt
+++ /Volumes/Data/Builds/Mac/Debug/TestBuild309622@main/layout-test-results/inspector/timeline/timeline-event-EventDispatch-actual.txt
@@ -1,3 +1,5 @@
+FAIL: Timed out waiting for notifyDone to be called
+
 Tests 'EventDispatch' Timeline event records.
 
 
@@ -34,8 +36,4 @@
 Starting Capture...
 Evaluating...
 PASS: b2 onclick attribute handler fired, will prevent default
-Stopping Capture...
-PASS: Should be 1 EventDispatched record.
-DETAILS: {"type":"click","defaultPrevented":true}
-PASS: ScriptTimelineRecord extraDetails should show default was prevented.
 

CRASH LOG:
No crash log found for com.apple.WebKit.WebContent.Development:3777.

stdout:

stderr:
VM 0x10c434000 on pid 3777 received NeedDebuggerBreak trap
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
inspector-resource:///TestCombined.js:57308:27: CONSOLE ASSERT ERROR
ASSERTION FAILED: !m_startedComposite
/Volumes/Data/worker/Apple-Tahoe-Debug-Build/build/Source/WebCore/inspector/agents/page/PageTimelineAgent.cpp(231) : void WebCore::PageTimelineAgent::willComposite()
1   0x350006bdc WebCore::PageTimelineAgent::willComposite()
2   0x34fdec1d8 WebCore::InspectorInstrumentation::willCompositeImpl(WebCore::InstrumentingAgents&)
3   0x34fe86098 WebCore::InspectorInstrumentation::willComposite(WebCore::LocalFrame&)
4   0x34fe86060 WebCore::PageInspectorController::willComposite(WebCore::LocalFrame&)
5   0x35071e1dc WebCore::Page::willStartRenderingUpdateDisplay()
6   0x1353435f4 WebKit::WebPage::willStartRenderingUpdateDisplay()
7   0x1352717b4 WebKit::DrawingArea::willStartRenderingUpdateDisplay()
8   0x13168e260 WebKit::RemoteLayerTreeDrawingArea::updateRendering()
9   0x131697590 WebCore::Timer::Timer<WebKit::RemoteLayerTreeDrawingArea, WebKit::RemoteLayerTreeDrawingArea>(WebKit::RemoteLayerTreeDrawingArea&, void (WebKit::RemoteLayerTreeDrawingArea::*)())::'lambda'()::operator()() const
10  0x1316973b8 WTF::Detail::CallableWrapper<WebCore::Timer::Timer<WebKit::RemoteLayerTreeDrawingArea, WebKit::RemoteLayerTreeDrawingArea>(WebKit::RemoteLayerTreeDrawingArea&, void (WebKit::RemoteLayerTreeDrawingArea::*)())::'lambda'(), void>::call()
11  0x130b4ab04 WTF::Function<void ()>::operator()() const
12  0x131693d4c WebCore::Timer::fired()
13  0x350a83324 WebCore::ThreadTimers::sharedTimerFiredInternal()
14  0x350a8d518 WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0::operator()() const
15  0x350a8d4c4 WTF::Detail::CallableWrapper<WebCore::ThreadTimers::setSharedTimer(WebCore::SharedTimer*)::$_0, void>::call()
16  0x349a578ec WTF::Function<void ()>::operator()() const
17  0x350a16a80 WebCore::MainThreadSharedTimer::fired()
18  0x350b92168 WebCore::timerFired(__CFRunLoopTimer*, void*)
19  0x1845d318c __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__
20  0x1845d2e4c __CFRunLoopDoTimer
21  0x1845d29c4 __CFRunLoopDoTimers
22  0x1845c376c __CFRunLoopRun
23  0x18467de34 _CFRunLoopRunSpecificWithOptions
24  0x186812964 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
25  0x185e11a50 -[NSRunLoop(NSRunLoop) run]
26  0x184210e14 _xpc_objc_main
27  0x184222cf8 _xpc_main
28  0x1842109d4 _xpc_copy_xpcservice_dictionary
29  0x13266b628 WebKit::XPCServiceMain(int, char const**)
30  0x1355fad3c WKXPCServiceMain
31  0x10414c70c main
com.apple.WebKit.WebContent.Development terminated (pid 3777) for reason: crash


REPRODUCTION:
I was able to reproduce this with the following:

run-webkit-tests  --force --no-retry --debug --iterations 100 -f inspector/timeline/timeline-event-EventDispatch.html --clobber-old-results

Marking expectations as pass crash while this pends investigation.

[Radar WebKit Bug Importer]

<rdar://problem/173024420>

[Diego De La Toba]

Test gardening pull request: https://github.com/WebKit/WebKit/pull/61031

[EWS]

Test gardening commit 309631@main (83a8faaabb1c): <https://commits.webkit.org/309631@main>

Reviewed commits have been landed. Closing PR #61031 and removing active labels.