[Webkit-unassigned] [Bug 180553] New: imported/w3c/web-platform-tests/XMLHttpRequest/event-upload-progress-crossorigin.htm is crashing on some platforms and is flaky on others

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=180553

            Bug ID: 180553
           Summary: imported/w3c/web-platform-tests/XMLHttpRequest/event-u
                    pload-progress-crossorigin.htm is crashing on some
                    platforms and is flaky on others
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jlewis3 at apple.com
                CC: achristensen at apple.com, youennf at gmail.com

imported/w3c/web-platform-tests/XMLHttpRequest/event-upload-progress-crossorigin.htm is a flaky failure on Sierra Release WK1 but the test is also crashing consistently on macOS Debug WK1 testers. Currently the test is marked as a flaky crash but has no bug associated with it.

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&revision=225366&tests=imported%2Fw3c%2Fweb-platform-tests%2FXMLHttpRequest%2Fevent-upload-progress-crossorigin.htm

failure:
https://build.webkit.org/results/Apple%20Sierra%20Release%20WK1%20(Tests)/r225638%20(6670)/results.html
https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK1%20(Tests)/builds/6670

Diff:
--- /Volumes/Data/slave/sierra-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/XMLHttpRequest/event-upload-progress-crossorigin-expected.txt
+++ /Volumes/Data/slave/sierra-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/XMLHttpRequest/event-upload-progress-crossorigin-actual.txt
@@ -1,6 +1,8 @@
+
+Harness Error (TIMEOUT), message = null

 PASS Upload events registered on time (http://127.0.0.1:8800/XMLHttpRequest/resources/corsenabled.py) 
-PASS Upload events registered on time (resources/redirect.py?code=307&location=http://127.0.0.1:8800/XMLHttpRequest/resources/corsenabled.py) 
+TIMEOUT Upload events registered on time (resources/redirect.py?code=307&location=http://127.0.0.1:8800/XMLHttpRequest/resources/corsenabled.py) Test timed out
 PASS Upload events registered too late (http://127.0.0.1:8800/XMLHttpRequest/resources/corsenabled.py) 
 FAIL Upload events registered too late (resources/redirect.py?code=307&location=http://127.0.0.1:8800/XMLHttpRequest/resources/corsenabled.py) assert_unreached: Reached unreachable code

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