netdev - Re: [regression] nf_iterate(), BUG: unable to handle kernel NULL pointer dereference

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Message-ID: <20080725013958.GA14200@gondor.apana.org.au>
Date:	Fri, 25 Jul 2008 09:39:58 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Matt Mackall <mpm@...enic.com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	Patrick McHardy <kaber@...sh.net>, Ingo Molnar <mingo@...e.hu>,
	David Miller <davem@...emloft.net>, w@....eu,
	davidn@...idnewall.com, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, stefanr@...6.in-berlin.de,
	rjw@...k.pl, ilpo.jarvinen@...sinki.fi,
	Dave Jones <davej@...hat.com>,
	Christoph Lameter <cl@...ux-foundation.org>
Subject: Re: [regression] nf_iterate(), BUG: unable to handle kernel NULL pointer dereference

On Thu, Jul 24, 2008 at 12:47:19PM -0500, Matt Mackall wrote:
>
> Let's try this again: did you know that ksize could fail depending on
> kernel configuration? Most of us would answer no. That suggests the API
> is bad. This ranks 12 on Rusty's spectrum of user-friendly APIs:

I think you misunderstood my argument.  I never suggested changing
the existing ksize interface to return an error onto unsuspecting
users.  I suggested creating a new interface that is explicitly
designed to return an error if the underlying implementation
is unable to support this.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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