linux-kernel - Re: 2.6.22.1 Oops in put_nfs_open

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Date:	Mon, 06 Aug 2007 15:38:44 -0400
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Dr. David Alan Gilbert" <linux@...blig.org>,
	linux-kernel@...r.kernel.org,
	"J. Bruce Fields" <bfields@...ldses.org>, stable@...nel.org
Subject: Re: 2.6.22.1 Oops in put_nfs_open_context

On Mon, 2007-08-06 at 11:45 -0700, Andrew Morton wrote:
> On Mon, 06 Aug 2007 14:19:54 -0400 Trond Myklebust <trond.myklebust@....uio.no> wrote:
> 
> > On Mon, 2007-08-06 at 11:01 -0700, Andrew Morton wrote:
> > > On Mon, 6 Aug 2007 11:08:13 +0100 "Dr. David Alan Gilbert" <linux@...blig.org> wrote:
> > > 
> > > >   The oops below is from one of a pair of machines that run compiles;
> > > > they're not managing to stay up for more than a day or two at a time
> > > > this is the first time I've actually managed to capture an oops from one.
> > > > They lock to the point where they still ping, and they won't toggle
> > > > capslock.  A top left running on them showed it sitting with pdflush
> > > > using 99% CPU.
> > > > 
> > > >   Config at the bottom.  The hardware are supermicro X7DVA boards with
> > > > 2x Xeon 5140's. (These Supermicro bios don't appear to have the PCI-Express
> > > > coalesce option being discussed in another thread).
> > > > 
> > 
> > ...
> >
> > I believe this fix should address it.
> 
> Neat, and that's already in 2.6.23-rc2.  Please consider sending something
> to stable@...nel.org when the dust has settled.  David, it would be great if
> we could get confirmation, please..

I haven't pushed it to Linus yet, but it might already be in -mm? I'm
planning a merge of a half-dozen fixes as soon as I get the last couple
of confirmations from the people testing them.

> > From: Trond Myklebust <Trond.Myklebust@...app.com>
> > Subject: No Subject
> > Date: Thu, 26 Jul 2007 12:06:17 -0400
> > 
> > We need to grab the inode->i_lock atomically with the last reference put in
> > order to remove the open context that is being freed from the
> > nfsi->open_files list.
> 
> Your patches have lost their titles btw.

Sorry about that. Evolution appears to "recognise" the patches as
emails, and gets confused...

Cheers
   Trond

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