linux-kernel - Re: [PATCH] NFSD: Don't hold unrefcounted creds over call to nfsd

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Message-ID: <20090703142250.GB31538@fieldses.org>
Date:	Fri, 3 Jul 2009 10:22:50 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	David Howells <dhowells@...hat.com>
Cc:	steved@...hat.com, rasmus@...onsult.dk, linux-nfs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] NFSD: Don't hold unrefcounted creds over call to
	nfsd_setuser()

On Thu, Jul 02, 2009 at 07:09:55PM -0400, bfields wrote:
> On Thu, Jul 02, 2009 at 10:31:33PM +0100, David Howells wrote:
> > J. Bruce Fields <bfields@...ldses.org> wrote:
> > 
> > > Got it, thanks.  How easy is it to hit this case?  (Just wondering
> > > whether to submit for stable.)
> > 
> > Actually, one of the problems with it is that the file is opened using the old
> > creds, cached across the call to nfsd_setuser().
> 
> Oops, got it.  That answers that question....

Also: the problem was introduced by
745ca2475a6ac596e3d8d37c2759c0fbe2586227, right?  Or does it not
actually manifest till a little later?

--b.
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