linux-kernel - Re: 2.6.32.2 - WARNING: at lib/kref.c:43 kref

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Message-ID: <20100217151435.GC30897@develbox.linuxbox.cz>
Date:	Wed, 17 Feb 2010 16:14:35 +0100
From:	Nikola Ciprich <extmaillist@...uxbox.cz>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	Harry Edmon <harry@...os.washington.edu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org,
	nikola.ciprich@...uxbox.cz
Subject: Re: 2.6.32.2 - WARNING: at lib/kref.c:43 kref_get+0x,23/0x2b()

Well,
I did a lot of stress tests, and it seems to be pretty random, and what's
worse, I think it is more then one problem, oh great...
Seems that at least one of my NFS problems was in fact caused by ext4 regression
(what FS are you using?)
applying this one: http://bugzilla.kernel.org/attachment.cgi?id=24975
improved things for me a lot (see http://bugzilla.kernel.org/show_bug.cgi?id=15231 for
full discussion).
I'll watch the machine for next few days and report...
regards
nik

On Tue, Feb 16, 2010 at 03:29:47PM -0500, J. Bruce Fields wrote:
> On Tue, Feb 16, 2010 at 09:27:20PM +0100, Nikola Ciprich wrote:
> > > Nothing yet.  I'm taking another look.
> > > 
> > > Do you know what the most recent version was where you did *not* see
> > > these warnings?
> > well, actually I decided I'll bisect this one no matter what, so hopefully
> > we'll see soon :)
> > I'll report
> 
> That would be fantastic, thanks.  What test-case are you using?
> 
> Any partial information ("xxxx good, xxxx bad") would also be useful.
> 
> --b.
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