Re: [PATCH] packet: tpacket_snd(): fix signed/unsigned comparison

[David Miller]

From: Alexander Drozdov <al.drozdov@xxxxxxxxx>
Date: Tue, 28 Jul 2015 13:57:01 +0300

> tpacket_fill_skb() can return a negative value (-errno) which
> is stored in tp_len variable. In that case the following
> condition will be (but shouldn't be) true:
> 
> tp_len > dev->mtu + dev->hard_header_len
> 
> as dev->mtu and dev->hard_header_len are both unsigned.
> 
> That may lead to just returning an incorrect EMSGSIZE errno
> to the user.
> 
> Signed-off-by: Alexander Drozdov <al.drozdov@xxxxxxxxx>

Applied, thanks.
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