[Webkit-unassigned] [Bug 194672] New: [ Mac WK2 ] REGRESSION (r231464) Layout Test http/tests/security/contentSecurityPolicy/1.1/frame-ancestors/report-frame-ancestors-cross-origin.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=194672

            Bug ID: 194672
           Summary: [ Mac WK2 ] REGRESSION (r231464) Layout Test
                    http/tests/security/contentSecurityPolicy/1.1/frame-an
                    cestors/report-frame-ancestors-cross-origin.html is a
                    flaky failure
           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 tests are failing on Mac WK2

http/tests/security/contentSecurityPolicy/1.1/frame-ancestors/report-frame-ancestors-same-origin.html
http/tests/security/contentSecurityPolicy/1.1/frame-ancestors/report-frame-ancestors-cross-origin.html

Probable cause:

it appears both tests started to become flaky after tests were edited with r231464. Identified through bisecting, prior revisions result in 100% failure.

Reproducible with: 

run-webkit-tests t231464 http/tests/security/contentSecurityPolicy/1.1/frame-ancestors/report-frame-ancestors-same-origin.html --iterations 500 -f

I am unsure if related, but there are several tests in this tree that have recently become flaky on the dashboard. All but the two above are not reproducible locally. 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fsecurity%2FcontentSecurityPolicy%2F1.1%2Fframe-ancestors%2Freport-frame-ancestors-cross-origin.html
http://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fsecurity%2FcontentSecurityPolicy%2F1.1%2Fframe-ancestors%2F

Diff: 

--- /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/http/tests/security/contentSecurityPolicy/1.1/frame-ancestors/report-frame-ancestors-cross-origin-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/http/tests/security/contentSecurityPolicy/1.1/frame-ancestors/report-frame-ancestors-cross-origin-actual.txt
@@ -1,8 +1,5 @@
-CONSOLE MESSAGE: Refused to load http://localhost:8000/security/contentSecurityPolicy/resources/echo-intertag.pl?header=Content-Security-Policy%3A+frame-ancestors+%27none%27%3B+report-uri+save-report.php%3Ftest%3D/security/contentSecurityPolicy/1.1/report-frame-ancestors-cross-origin.html&q=FAIL because it does not appear in the frame-ancestors directive of the Content Security Policy.
-CSP report received:
-CONTENT_TYPE: application/csp-report
-HTTP_HOST: localhost:8000
-REQUEST_METHOD: POST
-REQUEST_URI: /security/contentSecurityPolicy/resources/save-report.php?test=/security/contentSecurityPolicy/1.1/report-frame-ancestors-cross-origin.html
-=== POST DATA ===
-{"csp-report":{"document-uri":"http://localhost:8000/security/contentSecurityPolicy/resources/echo-intertag.pl?header=Content-Security-Policy%3A+frame-ancestors+%27none%27%3B+report-uri+save-report.php%3Ftest%3D/security/contentSecurityPolicy/1.1/report-frame-ancestors-cross-origin.html&q=FAIL","referrer":"http://127.0.0.1:8000/security/contentSecurityPolicy/1.1/frame-ancestors/report-frame-ancestors-cross-origin.html","violated-directive":"frame-ancestors 'none'","effective-directive":"frame-ancestors","original-policy":"frame-ancestors 'none'; report-uri save-report.php?test=/security/contentSecurityPolicy/1.1/report-frame-ancestors-cross-origin.html","blocked-uri":"http://localhost:8000/security/contentSecurityPolicy/resources/echo-intertag.pl?header=Content-Security-Policy%3A+frame-ancestors+%27none%27%3B+report-uri+save-report.php%3Ftest%3D/security/contentSecurityPolicy/1.1/report-frame-ancestors-cross-origin.html&q=FAIL","status-code":200}}
+#PID UNRESPONSIVE - com.apple.WebKit.WebContent.Development (pid 66930)
+FAIL: Timed out waiting for notifyDone to be called
+
+#EOF
+#EOF

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