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From: Nikola Ciprich <nikola.ciprich@linuxbox.cz>
To: Jan Kara <jack@suse.cz>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	Nikola Ciprich <nikola.ciprich@linuxbox.cz>
Subject: Re: BUG: enabling psacct breaks fsfreeze
Date: Wed, 31 Oct 2012 13:46:00 +0100	[thread overview]
Message-ID: <20121031124600.GM20752@pcnci.linuxbox.cz> (raw)
In-Reply-To: <20121031121517.GD18424@quack.suse.cz>

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Hi Jan,

thanks for the reply, sure, I'll gather and post requested info.
One more note before that, the problem is with psacct, not audit
 - psacct if I'm not mistaken  (and as opposed to audit) doesn't
use any userspace, kernel dumps information directly to fs, 
which might the reason for deadlock..

BR

nik


> > Should more debugging information be needed, I'll be glad to provide whatever I can..
>   Thanks for report. Hum, I'm not sure how the deadlock can happen because
> AFAIU audit sends a message via netlink to userspace and whatever audit
> daemon does with it is its private thing. Can you please run:
>   echo w >/proc/sysrq-trigger
> after the machine deadlocks and then take dmesg and attach it here? You'll
> have to have the shell prepared and use serial console / netconsole to gather
> dmesg or try your luck with copying via ssh / netcat.
> 
> 								Honza
> -- 
> Jan Kara <jack@suse.cz>
> SUSE Labs, CR
> 

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  reply	other threads:[~2012-10-31 12:46 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-23  9:43 BUG: enabling psacct breaks fsfreeze Nikola Ciprich
2012-10-31 12:15 ` Jan Kara
2012-10-31 12:46   ` Nikola Ciprich [this message]
2012-11-01  9:37     ` Jan Kara
2012-11-01 11:19       ` Jan Kara
2012-11-01 14:23         ` Nikola Ciprich
2012-11-01 22:50           ` Jan Kara
2012-11-02  9:50             ` Marco Stornelli
2012-11-02 10:40               ` Nikola Ciprich
2012-11-03  8:22                 ` Marco Stornelli
2012-11-07 18:51             ` Jan Kara
2012-11-07 21:21               ` Nikola Ciprich
2012-11-07 22:32                 ` Jan Kara

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