Issue #21510 has been updated by jkvithanage (Janaka Vithanage). Although the issue seems related to `pg` gem, I can run activerecord statements on a rails console session and they work perfectly fine. In that case, I may assume that this is not exactly a `pg` gem related issue. ---------------------------------------- Bug #21510: Rails server crashes on Mac M2 with Bus Error at 0x0000000109946aac https://bugs.ruby-lang.org/issues/21510#change-114014 * Author: jkvithanage (Janaka Vithanage) * Status: Open * ruby -v: ruby 2.6.6p146 (2020-03-31 revision 67876) [x86_64-darwin24] * Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN ---------------------------------------- I have been struggling to setup a Rails 5.1.7 application on my Macbook M2 for months. I installed Rosetta, x86_64 brew and my terminal app is set to run with Rosetta. ``` shell ~ ❯ arch i386 ~ ❯ which brew /usr/local/bin/brew ~ ❯ brew list ==> Formulae abseil coreutils icu4c@77 lz4 pkgconf xz autoconf gdbm krb5 m4 postgresql@14 yarn automake gettext libffi mysql protobuf@29 zlib bison gh libnghttp2 node readline zstd brotli git libtool node-build redis c-ares glib libunistring nodenv ruby-install ca-certificates gmp libuv openssl@3 shared-mime-info chruby heroku libyaml pcre2 terminal-notifier ==> Casks ~ ❯ ``` `bundle install` works perfectly fine. Then I can run rails commands like `rails console` and `rails db:` commands with no issues. I can also execute commands inside `rails console` too. `rails server` launches the server as well, but as soon as I accessed the port 3000 on the browser, it crashes with this bus error. ``` Started GET "/" for ::1 at 2025-07-12 22:54:20 +1000 /Users/jkv-mbp/.gem/ruby/2.6.6/gems/pg-0.21.0/lib/pg.rb:56: [BUG] Bus Error at 0x0000000109946aac ruby 2.6.6p146 (2020-03-31 revision 67876) [x86_64-darwin24] -- Crash Report log information -------------------------------------------- See Crash Report log file under the one of following: * ~/Library/Logs/DiagnosticReports * /Library/Logs/DiagnosticReports for more details. Don't forget to include the above Crash Report log file in bug reports. ``` It seems like an issue related to `pg` gem. Since this doesn't work on macOS, I installed Asahi Linux on it and setup the application. Although, its `aarch64` linux, the application can be launched without any issues. But, it's not a reliable solution for my work setup. It would be great someone can help me with this issue. I have attached a complete crash report and the Gemfile of the project. ---Files-------------------------------- server.log (657 KB) Gemfile (5.93 KB) -- https://bugs.ruby-lang.org/