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Date:	Tue, 07 Aug 2012 11:12:54 -0400
From:	Bryan Schumaker <bjschuma@...app.com>
To:	Joerg Roedel <joro@...tes.org>
CC:	Joerg Roedel <joerg.roedel@....com>,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	wdauchy@...il.com
Subject: Re: kernel BUG at /data/lemmy/linux.trees.git/fs/nfs/idmap.c:681!

On 08/07/2012 10:50 AM, Joerg Roedel wrote:
> On Tue, Aug 07, 2012 at 10:36:31AM -0400, Bryan Schumaker wrote:
>> Your stack trace is showing v4 calls on the failing box, those
>> definitely shouldn't be happening if you're using v3.  Can you double
>> check /etc/fstab and /proc/mounts on a working kernel to be sure?
> 
> So the bug is probably (for whatever reason) that the nfs4 path is
> called for an nfs3 mount :)

That's what I'm thinking.  If you're not using v4, what happens if you turn CONFIG_NFS_V4 off in your .config for the broken machine?  I still haven't been able to trigger the bug, even with your .config, so I'm going to keep poking at it.

- Bryan

> Anyway, I attach /proc/mounts and /etc/fstab from that box running a
> v3.5-rc5 kernel (where it works).

Thanks.  I don't see anything weird in there.  You're using the same settings for the other machine, too?

> 
> 
> 	Joerg
> 

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