linux-kernel - Re: 2.6.38-rc3: kernel BUG at fs/nfsd/nfs4state.c:3132!

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Message-ID: <20110211153702.GC3005@fieldses.org>
Date:	Fri, 11 Feb 2011 10:37:02 -0500
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Tino Keitel <tino.keitel@...ei.de>, Neil Brown <neilb@...e.de>,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: 2.6.38-rc3: kernel BUG at fs/nfsd/nfs4state.c:3132!

On Fri, Feb 11, 2011 at 04:29:56PM +0100, Takashi Iwai wrote:
> At Fri, 11 Feb 2011 10:21:12 -0500,
> J. Bruce Fields wrote:
> > Again, 2.6.38-rc4 does not have a BUG() on line 3132.  Could you post
> > the full oops message from your machine?
> 
> Well, on vanilla 2.6.38-rc4, it's in nfs4_preprocess_stateid_op():
>                if (filpp) {
>                         *filpp = find_readable_file(dp->dl_file);
> ==>                     BUG_ON(!*filpp);
>                 }

Oh good grief, my apologies--I mistyped "38" as "28"!

This looks like it could be a known delegation bug....  Would it be
possible for you to check whether this is reproduceable on

	git://linux-nfs.org/~bfields/topics.git for-2.6.38-incoming

?

--b.
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