netdev - Re: [PATCH]IPv6:remove duplicate check of optlen when setsockopt with IPV6

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Message-ID: <20090115053702.GA30403@gondor.apana.org.au>
Date:	Thu, 15 Jan 2009 16:37:02 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Yang Hongyang <yanghy@...fujitsu.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH]IPv6:remove duplicate check of optlen when setsockopt
	with IPV6_PKTINFO option

On Thu, Jan 15, 2009 at 01:34:03PM +0800, Yang Hongyang wrote:
> 
> Dave,there are some of the code elsewhere return EFAULT when
> optval=NULL,I will post a patch to fix them:)

I disagree.  The concept of a user-space NULL pointer is different
to that of a kernel-space NULL pointer, so the kernel should not
be treating a user-space NULL pointer differently than any other
pointer.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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