Re: Threads hanging in OMNI ORB 4.2.1 with mutex lock

Hi Duncan,
Thanks a lot.
We will certainly try this.  By the way could you tell us what could be potential trigger for this deadlock. We are asking this so that we can try to reproduce this issue in lab.

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________________________________
From: Duncan Grisby <[email protected]>
Sent: Monday, December 10, 2018 3:49:35 AM
To: Agarwal, Shelendra; [email protected]
Cc: Cassis, Ivano
Subject: Re: [omniORB] Threads hanging in OMNI ORB 4.2.1 with mutex lock

On Fri, 2018-12-07 at 17:32 +0000, Agarwal, Shelendra via omniORB-list
wrote:

> We have a process that sometime hangs and stops responding to other
> processes for CORBA calls. We collected the gstack of the process and
> from the thread dumps we see most of the threads are in
> omni_mutex_lock::omni_mutex_lock condition.

Please try with the snapshot from here:

http://omniorb.sourceforge.net/snapshots/omniORB-4.2-latest.tar.gz

(Or the latest from the 4_2 branch in SVN.)

That contains a fix for a three-way lock deadlock that is quite likely
to be the cause of your problem.

Let me know if the problem still occurs with that.

Duncan.

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