[Webkit-unassigned] [Bug 196517] New: [ Mac ] REGRESSION (r243033) Assertion failed: m_logger Layout Test imported/w3c/web-platform-tests/mst-content-hint/MediaStreamTrack-contentHint.html is a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196517

            Bug ID: 196517
           Summary: [ Mac ] REGRESSION (r243033) Assertion failed:
                    m_logger Layout Test
                    imported/w3c/web-platform-tests/mst-content-hint/Media
                    StreamTrack-contentHint.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 Release WK2, Mac Debug WK1 & WK2

imported/w3c/web-platform-tests/mst-content-hint/MediaStreamTrack-contentHint.html

Probable cause:

Test started showing up recently on dashboard as a flaky crash. Through local testing found crashes began with https://trac.webkit.org/changeset/243033/webkit . Testing prior to this revision yield all passes.

Crashes the most in WK1 Debug, but I can repro locally in every build listed on the dashboard.

Reproduced with:

run-webkit-tests imported/w3c/web-platform-tests/mst-content-hint/MediaStreamTrack-contentHint.html --iterations 500 -f --debug -1 --exit-after-n-failures=2

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fmst-content-hint%2FMediaStreamTrack-contentHint.html

Crash Log:

https://build.webkit.org/results/Apple%20Mojave%20Debug%20WK1%20(Tests)/r243759%20(2880)/imported/w3c/web-platform-tests/mst-content-hint/MediaStreamTrack-contentHint-crash-log.txt

ASSERTION FAILED: m_logger
/Volumes/Data/slave/mojave-debug/build/Source/WebCore/platform/mediastream/MediaStreamTrackPrivate.h(121) : virtual const WTF::Logger &WebCore::MediaStreamTrackPrivate::logger() const
1   0x104d9fdb9 WTFCrash
2   0x1139d655b WTFCrashWithInfo(int, char const*, char const*, int)
3   0x116de6b07 WebCore::MediaStreamTrackPrivate::logger() const
4   0x116de6259 WebCore::MediaStreamTrackPrivate::updateReadyState()
5   0x116de6a0e WebCore::MediaStreamTrackPrivate::audioSamplesAvailable(WTF::MediaTime const&, WebCore::PlatformAudioData const&, WebCore::AudioStreamDescription const&, unsigned long)

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