Issue #21204 has been updated by Eregon (Benoit Daloze). Assignee set to eightbitraptor (Matt V-H) This seems a ModGC bug as the failure seems to happen (from what I heard) only in the ModGC workflow, cc @eightbitraptor @peterzhu2118 The test has been omitted only for the ModGC workflow: https://github.com/ruby/etc/pull/55 ---------------------------------------- Bug #21204: `TestEtc#test_ractor_parallel` is still flaky result https://bugs.ruby-lang.org/issues/21204#change-112470 * Author: hsbt (Hiroshi SHIBATA) * Status: Open * Assignee: eightbitraptor (Matt V-H) * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- https://github.com/ruby/ruby/actions/runs/14121185441/job/39561623937?pr=130... ``` 1) Failure: TestEtc#test_ractor_parallel [/home/runner/work/ruby/ruby/src/test/etc/test_etc.rb:178]: pid 150540 killed by SIGABRT (signal 6) (core dumped) | [BUG] pthread_mutex_lock: Owner died (EOWNERDEAD) | ruby 3.5.0dev (2025-03-28T03:13:46Z pull/13004/merge 4cfbc634ea) +PRISM +GC[mmtk] [x86_64-linux] | | -- Control frame information ----------------------------------------------- | | malloc_consolidate(): unaligned fastbin chunk detected | | -- Threading information --------------------------------------------------- | Total ractor count: 1 ``` -- https://bugs.ruby-lang.org/