From: rajesh@...
Date: 2014-01-20T07:03:16+00:00
Subject: [ruby-core:59894] [Backport200 - Backport #9432] [Open] ThreadError [ Attempt to unlock a mutex which is locked by another thread ]

Issue #9432 has been reported by rajesh shanmugam.

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Backport #9432:  ThreadError [ Attempt to unlock a mutex which is locked by another thread ]
https://bugs.ruby-lang.org/issues/9432

* Author: rajesh shanmugam
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.4.0]
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I use ruby-2.0.0-p247. I seem to get this issue frequently in threaded environment. (Sidekiq) 

I am not very sure if it a ruby thread issue as such or something I am doing wrong. If there is any more details you need I would be happy to provide you.

Operating system: Ubuntu

Trace

```
/home/ubuntu/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/thread.rb:188:in `synchronize'
/home/ubuntu/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/thread.rb:188:in `block in pop'
/home/ubuntu/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/thread.rb:187:in `handle_interrupt'
/home/ubuntu/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/thread.rb:187:in `pop'
```

Regards
Rajesh



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