[Webkit-unassigned] [Bug 194225] New: [ Mac WK2 Debug ] Layout Test http/tests/cookies/same-site/fetch-after-top-level-navigation-from-cross-origin-page.html is flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=194225

            Bug ID: 194225
           Summary: [ Mac WK2 Debug ] Layout Test
                    http/tests/cookies/same-site/fetch-after-top-level-nav
                    igation-from-cross-origin-page.html is flaky
           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 WK2 Debug

http/tests/cookies/same-site/fetch-after-top-level-navigation-from-cross-origin-page.html

Probable cause:

Appears to be flaky timeout or missing failure as of 239333. 

Reproducible with: 

run-webkit-tests --root d239506 http/tests/cookies/same-site/fetch-after-top-level-navigation-from-cross-origin-page.html --iterations 500 -f --debug --exit-after-n-failures=1 --no-retry-failures

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fcookies%2Fsame-site%2Ffetch-after-top-level-navigation-from-cross-origin-page.html

Assertion failure: 

ASSERTION FAILED: m_uncommittedState.state == State::Committed
/Volumes/Data/slave/mojave-debug/build/Source/WebKit/UIProcess/PageLoadState.cpp(298) : void WebKit::PageLoadState::didFinishLoad(const Transaction::Token &)
1   0x10fa349e9 WTFCrash
2   0x119be42cb WTFCrashWithInfo(int, char const*, char const*, int)
3   0x11a33ee3d WebKit::PageLoadState::didFinishLoad(WebKit::PageLoadState::Transaction::Token const&)
4   0x11a4f94c2 WebKit::WebPageProxy::didFinishLoadForFrame(unsigned long long, unsigned long long, WebKit::UserData const&)

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