From: "byroot (Jean Boussier) via ruby-core" Date: 2025-11-05T15:56:49+00:00 Subject: [ruby-core:123690] [Ruby Bug#21670] 3.4.5 crashing with "try to mark T_NONE object" Issue #21670 has been updated by byroot (Jean Boussier). It's in `mark_method_entry_i`, which rings a bell. @jhawthorn didn't you fix that one? @esaron please try the latest patch release: 3.4.7, your issue looks a lot like a missing write barrier issue and John fixed many of them in 3.4.7: https://github.com/ruby/ruby/compare/v3_4_5...v3_4_7 ---------------------------------------- Bug #21670: 3.4.5 crashing with "try to mark T_NONE object" https://bugs.ruby-lang.org/issues/21670#change-115072 * Author: esaron (Es Aron) * Status: Open * ruby -v: ruby 3.4.5 (2025-07-16 revision 20cda200d3) +PRISM [x86_64-linux] * Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- We're experiencing a large number of crashes while running tests in CI on Ubuntu 22.04 runners. It is inconsistent, and we cannot reproduce reliably, although when the crash happens it appears to always happen in the same place, even if during different tests. This occurs both with and without YJIT enabled. ---Files-------------------------------- 3.4.5-crash-logs.txt (185 KB) -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/