netdev - Re: [PATCH 2/2] [IPV6]: Ensure to truncate result and return full length for sticky options.

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Date:	Fri, 9 Mar 2007 16:22:53 -0800
From:	Chris Wright <chrisw@...s-sol.org>
To:	David Miller <davem@...emloft.net>
Cc:	chrisw@...s-sol.org, yoshfuji@...ux-ipv6.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 2/2] [IPV6]: Ensure to truncate result and return full length for sticky options.

* David Miller (davem@...emloft.net) wrote:
> copy_to_user() will check it, actually, it will make sure that
> optval + len doesn't wrap or overlap into kernel space.
> 
> Actually, like sparc64 it BUG's on negative length so we have
> to fix this :-)

Yeah, I think it's arch dependent (x86_64 for example will give
me 2GB back happily, useful if I forgot my password ;-)

thanks,
-chris
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