From: Peter Sanford <psanford@...>
Date: 2011-06-03T01:13:16+09:00
Subject: [ruby-core:36697] [Ruby 1.9 - Bug #4777] Ruby 1.9.2-p180 ignoring INT, TERM, and QUIT until it receives CONT


Issue #4777 has been updated by Peter Sanford.


Ok. I upgraded to the 2.6.39 kernel (using the kernel-ppa) and the problem went away. I know that there were some issues with 2.6.38 + bash related to signal handling*, although it is not clear to me if there was any kernel change to address the issue.

* http://lists.gnu.org/archive/html/bug-bash/2011-02/msg00073.html and
  http://lkml.indiana.edu/hypermail/linux/kernel/1102.1/00742.html
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Bug #4777: Ruby 1.9.2-p180 ignoring INT, TERM, and QUIT until it receives CONT
http://redmine.ruby-lang.org/issues/4777

Author: Nathan Sobo
Status: Third Party's Issue
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: -


We're having an intermittent but fairly frequent issue with a resque worker process that we're daemonizing with daemontools on Ubuntu 10.04 LTS

When we send a QUIT or TERM signal to the process, it is not handled.
When we send a CONT, the process traps and handles QUIT and TERM signals that were ignored just before handling the CONT.
It's as if the CONT frees the signals that were previously ignored.


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