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.