Error: cross-thread violation on rb_gc()

Question

I\'m new to Ruby on Rails.

I ran the following in a terminal when I was going through creating a blog tutorial with Rails:

$ rails blog
[BUG] cross         


        

Answer 1

This can happen with all sorts of gems and seems to have to do with a gem with C extensions compiled against a different ruby than the one trying to load it.

https://rvm.io/support/troubleshooting/

Bus Error / Segfault

[BUG] cross-thread violation on rb_gc()

In every case of this I have seen thus far it has always ended up being that a ruby gem/library with C extensions was compiled against a different ruby and/or architecture than the one that is trying to load it. Try uninstalling & reinstalling gems with C extensions that your application uses to hunt this bugger down.

The json gem is a frequent culprit, but there's a long list of other gems that people have had issue with. I'm not sure how to figure out exactly which gem is causing the problem, but if you're using rvm with gemsets you, can always rvm gemset empty and reinstall all your gems with Bundler.