linux-kernel - Re: mount.nfs oops [was: mmotm 2009-09-03-16-35 uploaded]

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Date:	Fri, 04 Sep 2009 18:12:17 -0400
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	linux-kernel@...r.kernel.org, mm-commits@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-nfs@...r.kernel.org
Subject: Re: mount.nfs oops [was: mmotm 2009-09-03-16-35 uploaded]

On Fri, 2009-09-04 at 22:54 +0200, Jiri Slaby wrote:
> On 09/04/2009 01:40 AM, akpm@...ux-foundation.org wrote:
> > The mm-of-the-moment snapshot 2009-09-03-16-35 has been uploaded to
> 
> Hi, I got an oops while mounting an nfs:
> BUG: unable to handle kernel NULL pointer dereference at 000000000000001d
> IP: [<ffffffffa003924f>] rpcauth_lookupcred+0x4f/0xc0 [sunrpc]

This looks like the auth->au_ops->lookup_cred() call failing due to a
faulty pointer, which should be impossible.

I note that you had a kernel taint due to a warning before this Oops
happened. Any details?

Also, were you doing anything special at the time (for instance removing
a module)?

-- 
Trond Myklebust
Linux NFS client maintainer

NetApp
Trond.Myklebust@...app.com
www.netapp.com
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