Issue #20184 has been updated by naruse (Yui NARUSE). Backport changed from 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: REQUIRED to 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: DONE ruby_3_3 commit:53f0c5a4e8834f11af0f903d2c59754d9be2a7f2. ---------------------------------------- Bug #20184: Ruby segfaults on Fly.io with 256 MB RAM https://bugs.ruby-lang.org/issues/20184#change-107397 * Author: aalin (Andreas Alin) * Status: Closed * ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux] * Backport: 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONTNEED, 3.3: DONE ---------------------------------------- I've been running a Ruby 3.2 app on Fly.io with 256 MB RAM and it has been working fine. When I upgraded to Ruby 3.3.0, any Ruby script would crash immediately with a segfault. I haven't been able to reproduce it outside of fly.io. I created a repository with a basic rack app which crashes on fly.io. The readme includes the full output and a GDB backtrace. https://github.com/aalin/ruby-3-3-0-fly-crash -- https://bugs.ruby-lang.org/