linux-kernel - Re: [PATCH] CRED: Fix regression in cap_capable() as shown up by sys

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Message-ID: <20090102051905.GC1073@fieldses.org>
Date:	Fri, 2 Jan 2009 00:19:05 -0500
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	David Howells <dhowells@...hat.com>
Cc:	Christoph Hellwig <hch@....de>, jmorris@...ei.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] CRED: Fix regression in cap_capable() as shown up by
	sys_faccessat() [ver #2]

On Fri, Jan 02, 2009 at 01:19:12AM +0000, David Howells wrote:
> J. Bruce Fields <bfields@...ldses.org> wrote:
> 
> > Hm.  newpynfs is also giving me failures having to do with the v4
> > server's permissions-checking.  I'll investigate, but is it possible
> > nfsd also needs a fix?
> 
> It's possible.  Have you seen whether this patch fixes those failures also?
> nfsd uses this facility also.

No.  I started bisecting, and it does appear to be a regression from the
cred patches, but at some point in the middle there it hangs on boot (a
softlockup report blames a spinlock in set_groups).

--b.
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