linux-kernel - Re: [BUG] soft lockup detected with ipcs

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Message-ID: <47CAE7D5.5040907@gmail.com>
Date:	Sun, 02 Mar 2008 18:45:57 +0100
From:	Jiri Olsa <olsajiri@...il.com>
To:	Jiri Kosina <jkosina@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [BUG] soft lockup detected with ipcs

Jiri Kosina wrote:
> On Fri, 29 Feb 2008, Jiri Olsa wrote:
> 
>> when I run 'ipcs' my system freeze up immediatelly. I was able to get 
>> kernel BUG message once, I think it is not printed out all the time it 
>> freeze.
>> I tried on 2.6.24, 2.6.20 and 2.6.18.
>> I attached screenshot from 2.6.18 freeze and config.
> 
> Could you please turn all the lock debugging options in your .config on 
> (most importantly CONFIG_PROVE_LOCKING, and all the other lock debugging 
> options might come handy too) and try again, to see if we get any debug 
> error messages? I'd guess that someone is holding mqueue_inode_info->lock 
> for too long or there is some AB-BA deadlock on it, which lockdep and 
> friends might be able to diagnose.
> 

I got more logs via netconsole, first I ran ipcs it segfaulted next run
the system freezed.
I attached also the current config.

View attachment "config-2.6.24.3" of type "text/plain" (36945 bytes)

View attachment "log" of type "text/plain" (3928 bytes)