[Webkit-unassigned] [Bug 197442] New: REGRESSION (r242741) [Mac WK1 Debug] Layout Test inspector/timeline/exception-in-injected-script-while-recording.html is a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=197442

            Bug ID: 197442
           Summary: REGRESSION (r242741) [Mac WK1 Debug] Layout Test
                    inspector/timeline/exception-in-injected-script-while-
                    recording.html is a flaky crash
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sroberts at apple.com
                CC: lforschler at apple.com

The following layout test is flaky on Mac WK1 Debug

inspector/heap/tracking.html

Probable cause:

Test has been crashing it's entire available history on the dashboard. Local testing verified that the test started crashing in https://trac.webkit.org/changeset/242741/webkit and passed in prior revisions. 

Reproduced with:

run-webkit-tests inspector/timeline/exception-in-injected-script-while-recording.html --iterations 1000 -f --debug -1 --exit-after-n-crashes=1

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=inspector%2Fheap%2Ftracking.html

Crash Log:

Thread 7 Crashed:: WebCore: ResourceUsage
0   com.apple.JavaScriptCore            0x000000010e01bff0 WTFCrash + 16 (Assertions.cpp:305)
1   com.apple.WebCore                   0x000000011b461a8b WTFCrashWithInfo(int, char const*, char const*, int) + 27
2   com.apple.WebCore                   0x000000011b9689f3 WebCore::threadInfos() + 483 (ResourceUsageThreadCocoa.mm:195)
3   com.apple.WebCore                   0x000000011b967ce2 WebCore::ResourceUsageThread::platformCollectCPUData(JSC::VM*, WebCore::ResourceUsageData&) + 82 (ResourceUsageThreadCocoa.mm:244)

https://build.webkit.org/results/Apple%20High%20Sierra%20Debug%20WK1%20(Tests)/r244750%20(8923)/inspector/timeline/exception-in-injected-script-while-recording-crash-log.txt

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