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Date:   Mon, 29 May 2017 20:41:06 -0700
From:   Joe Perches <joe@...ches.com>
To:     David Miller <davem@...emloft.net>, cugyly@....com
Cc:     netdev@...r.kernel.org, dsahern@...il.com,
        Linyu.Yuan@...atel-sbell.com.cn
Subject: Re: [PATCH net-next] net: ndisc.c: reduce size of
 __ndisc_fill_addr_option()

On Mon, 2017-05-29 at 23:30 -0400, David Miller wrote:
> From: yuan linyu <cugyly@....com>
> Date: Sat, 27 May 2017 06:00:52 +0800
> 
> > From: yuan linyu <Linyu.Yuan@...atel-sbell.com.cn>
> > 
> > Signed-off-by: yuan linyu <Linyu.Yuan@...atel-sbell.com.cn>
> 
> Applied, thanks.

OK, but is it really safe though?

Could "space" (an int) ever be negative after
subtracting "pad" and "data_len"?

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