[ iOS wk2 EWS ] imported/w3c/web-platform-tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.html is flaky crash 
https://bugs.webkit.org/show_bug.cgi?id=225169
Summary [ iOS wk2 EWS ] imported/w3c/web-platform-tests/workers/interfaces/DedicatedW...
Robert Jenner
Reported 2021-04-28 16:20:13 PDT
imported/w3c/web-platform-tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.html is a flaky crash on EWS iOS wk 2 only. Affected EWS Queue: https://ews-build.webkit.org/#/builders/51 First occurrence appears to be here: https://ews-build.webkit.org/#/builders/51/builds/12203 Most recent occurrence was here: https://ews-build.webkit.org/#/builders/51/builds/12322 There is no crashlog produced with any of these reported crashes on EWS, the results just simply indicate that the test crashes. Also, because this test only crashes on EWS, and not on any other platforms, I cannot reproduce the crash anywhere.
Attachments
Add attachment proposed patch, testcase, etc.
Robert Jenner
Comment 1 2021-04-28 17:45:34 PDT
Updated test expectations to Pass Crash here: https://trac.webkit.org/changeset/276743/webkit
Robert Jenner
Comment 2 2021-04-28 17:58:43 PDT
Test was first found flakey here: https://ews-build.webkit.org/#/builders/51/builds/11834
Radar WebKit Bug Importer
Comment 3 2021-04-28 17:59:08 PDT
<rdar://problem/77295341>
Alexey Proskuryakov
Comment 4 2021-04-29 13:40:48 PDT
Not a real crash: 11:04:05.584 68569 com.apple.WebKit.WebContent.Development crash, pid = 75091 11:04:05.747 68569 This test marked as a crash because of no data while reading stdout for the server process. 11:04:05.747 68569 This test marked as a crash because of no data while reading stdout for the server process.
Alexey Proskuryakov
Comment 5 2021-04-29 13:42:10 PDT
(and there is not crash log in ~/Library/Logs/DiagnosticReports around this time)
Note You need to log in before you can comment on or make changes to this bug.