[Webkit-unassigned] [Bug 231703] New: [ Windows EWS ] js/dom & js/dfg- tests are a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=231703

            Bug ID: 231703
           Summary: [ Windows EWS ] js/dom & js/dfg- tests are a flaky
                    crash
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ayumi_kojima at apple.com

Many js/dom & js/dfg- tests are showing up on Windows EWS as flaky tests.

js/dom/toInt32UInt32.html
js/dom/implicit-call-with-global-reentry.html
js/dom/document-all-class-extends.html
js/dom/reserved-words-as-property.html
js/dfg-inlining-reg-alloc.html
js/dfg-inline-many-blocks.html
js/dfg-float32array.html
js/dfg-uint16array.html

The crash seems to be only on Windows-EWS and are not seen in the open source: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=js%2Fdom%2FtoInt32UInt32.html&test=js%2Fdfg-uint16array.html&test=js%2Fdfg-float32array.html&test=js%2Fdfg-inline-many-blocks.html&test=js%2Fdfg-inlining-reg-alloc.html

Some of the tests have been flaky since August (Example build: https://ews-build.webkit.org/#/builders/10/builds/102140).

Those tests seem to have no stderr and sometimes no crash log (No crash log found for DumpRenderTree:8796.) Example: https://ews-build.s3-us-west-2.amazonaws.com/Windows-EWS/r441069-110127/results.html

Stdio:

22:21:33.280 10004 worker/1 worker/1 js/dom/toInt32UInt32.html crashed, (no stderr)
22:21:33.299 10004 [23872/26923] js/dom/toInt32UInt32.html failed unexpectedly (DumpRenderTree crashed [pid=1000])
22:21:33.300 10004 worker/1 killing driver
22:21:33.300 10004 worker/1 js/dom/toInt32UInt32.html failed:
22:21:33.300 10004 worker/1 DumpRenderTree crashed [pid=1000]

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