linux-kernel - Re: [PATCH net 0/4] net: dsa: Use strncpy() for ethtool::get

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Message-ID: <beeb4115-bdf7-176f-2ffb-24ebb5d02daa@gmail.com>
Date:   Thu, 1 Mar 2018 20:34:12 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        Woojung Huh <Woojung.Huh@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net 0/4] net: dsa: Use strncpy() for ethtool::get_strings

Hi David,

On 03/01/2018 04:25 PM, Florian Fainelli wrote:
> Hi all,
> 
> After turning on KASAN on one of my systems, I started getting lots of out of
> bounds errors while fetching a given port's statistics, and indeed using
> memcpy() is unsafe for copying strings, so let's use strncpy() instead.

Looks like only patch 1 is necessary, but there are more drivers with
the same pattern under drivers/net/phy: marvell.c, micrel.c and
bcm-phy-lib.c, so I will submit a v2 with those fixed.

> 
> Florian Fainelli (4):
>   net: dsa: b53: Use strncpy() for ethtool::get_strings
>   net: dsa: loop: Use strncpy() for ethtool::get_strings
>   net: dsa: microchip: Utilize strncpy() for ethtool::get_strings
>   net: dsa: mv88e6xxx: Utilize strncpy() for ethtool::get_strings
> 
>  drivers/net/dsa/b53/b53_common.c       | 4 ++--
>  drivers/net/dsa/dsa_loop.c             | 4 ++--
>  drivers/net/dsa/microchip/ksz_common.c | 4 ++--
>  drivers/net/dsa/mv88e6xxx/chip.c       | 4 ++--
>  4 files changed, 8 insertions(+), 8 deletions(-)
> 

-- 
Florian