Re: [PATCH net-next] ieee802154: ca8210: fix possible u8 overflow in ca8210_rx_done

[David Miller]

From: YueHaibing <yuehaibing@xxxxxxxxxx>
Date: Tue, 11 Dec 2018 11:13:39 +0800

> gcc warning this:
> 
> drivers/net/ieee802154/ca8210.c:730:10: warning:
>  comparison is always false due to limited range of data type [-Wtype-limits]
> 
> 'len' is u8 type, we get it from buf[1] adding 2, which can overflow.
> This patch change the type of 'len' to unsigned int to avoid this,also fix
> the gcc warning.
> 
> Fixes: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>

WPAN maintainers, I am assuming that as maintainers you will be
picking this up and sending it to me.