If using -Xnative.enabled=false on JRuby's command line does not fix this then I strongly suspect this is a JVM bug in Java 7. Disabling native supports means all the posix APIs are implemented in pure Java which might not provide all the posix support your app needs. Nonetheless if you app starts without it then this should be helpful in eliminating a possible cause.

Are you still having this problem @nclaburn? Did you try -Xnative.enabled=false?

As @enebo says it is possible that it is a JVM bug (I've seen hard crashes in the JVM from normal JRuby code myself before).

@chrisseaton I haven't tried recently. I will do my best to repeat the process and will update this issue if/when I get time.

This is definitely a crash in the JVM...specifically in C1, the "client" compiler.

If you can reproduce this, we can have the JVM dump compiler logs that might give us some indication what's causing the crash..

After many attempts I can no long reproduce this. My environment (including hardware) has evolved too much since discovering this. It is no longer an issue for me personally.

Going to go ahead and close this since I do not believe there is anything for JRuby to do here :(