Most of these Fission TSan failures are test timeouts. Perhaps we can run these Fission TSan tests in smaller batches and/or increase the timeout? The one test failure from https://treeherder.mozilla.org/jobs?repo=try&revision=e2487391f036693313bd60adfb1ce49516ba959f&searchStr=tsan that was not an obvious timeout was wpt8: ``` TEST-UNEXPECTED-FAIL | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-module.html | <script> error: Move parse-error external module script to iframe before-prepare - assert_unreached: Script error evennt fired unexpectedly Reached unreachable code ``` This looks like bug 1636883, a rare intermittent test failure that happens without Fission or TSan. Perhaps Fission with TSan makes that rare intermittent more reproducible? I think we can just skip this failing test case (before-prepare-iframe-parse-error-external-module.html) since it is an existing test failure, not consistently-reproducible for Fission without TSan, and not a TSan error.
Bug 1706560 Comment 1 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Most of these Fission TSan failures are test timeouts. Perhaps we can run these Fission TSan tests in smaller batches and/or increase the timeout? The one test failure from https://treeherder.mozilla.org/jobs?repo=try&revision=e2487391f036693313bd60adfb1ce49516ba959f&searchStr=tsan that was not an obvious timeout was wpt8: ``` TEST-UNEXPECTED-FAIL | /html/semantics/scripting-1/the-script-element/moving-between-documents/before-prepare-iframe-parse-error-external-module.html | <script> error: Move parse-error external module script to iframe before-prepare - assert_unreached: Script error evennt fired unexpectedly Reached unreachable code ``` This looks like ~bug 1636883~ bug 1714790, a rare intermittent test failure that happens without Fission or TSan. Perhaps Fission with TSan makes that rare intermittent more reproducible? I think we can just skip this failing test case (before-prepare-iframe-parse-error-external-module.html) since it is an existing test failure, not consistently-reproducible for Fission without TSan, and not a TSan error.