netdev - Re: [PATCH] SUNRPC: Prevent kernel stack corruption on long values of flush

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Date:	Wed, 17 Oct 2012 15:02:33 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	Sasha Levin <levinsasha928@...il.com>
Cc:	Trond.Myklebust@...app.com, davem@...emloft.net, davej@...hat.com,
	linux-nfs@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] SUNRPC: Prevent kernel stack corruption on long values
 of flush

On Wed, Oct 17, 2012 at 01:59:39PM -0400, Sasha Levin wrote:
> On Wed, Jul 18, 2012 at 1:39 PM, J. Bruce Fields <bfields@...ldses.org> wrote:
> > On Tue, Jul 17, 2012 at 12:01:26AM +0200, Sasha Levin wrote:
> >> The buffer size in read_flush() is too small for the longest possible values
> >> for it. This can lead to a kernel stack corruption:
> >
> > Thanks!
> 
> I've just stumbled on this crash again, and noticed that this patch
> never made it in.
> 
> Was it just a mixup, or is something still missing?

Oh, man, I guess I got distracted by the subsequent base10len()
discussion.

Added to my for-3.7 branch, I'll push that out after some tests and
hopefully send in a pull request tomorrow.

Thanks for noticing the ommission.

--b.
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