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SubjectRe: 2.6.38-rc3: kernel BUG at fs/nfsd/nfs4state.c:3132!
On Fri, Feb 11, 2011 at 05:57:21PM +0100, Takashi Iwai wrote:
> At Fri, 11 Feb 2011 17:12:33 +0100,
> Takashi Iwai wrote:
> >
> > At Fri, 11 Feb 2011 11:05:32 -0500,
> > J. Bruce Fields wrote:
> > >
> > > On Fri, Feb 11, 2011 at 05:01:18PM +0100, Takashi Iwai wrote:
> > > > At Fri, 11 Feb 2011 10:37:02 -0500,
> > > > J. Bruce Fields wrote:
> > > > >
> > > > > 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
> > > >
> > > > Hm, I couldn't pull it.
> > > >
> > > > % git pull 'git://linux-nfs.org/~bfields/topics.git' for-2.6.38-incoming
> > > > fatal: The remote end hung up unexpectedly
> > >
> > > Should be linux-topics, apologies again:
> > >
> > > git://linux-nfs.org/~bfields/linux-topics.git for-2.6.38-incoming
> >
> > Thanks. I'm going to give it a try now.
>
> Looks good so far. I'll let you know if it's triggered again.

Excellent, thanks for the persistence, and apologies again for my
confusion over the initial report!

--b.


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