linux-kernel - Re: [PATCH v2 0/4] net: Use strlcpy() for ethtool::get

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Date:   Tue, 06 Mar 2018 11:13:35 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     f.fainelli@...il.com
Cc:     netdev@...r.kernel.org, david.laight@...lab.com, andrew@...n.ch,
        vivien.didelot@...oirfairelinux.com, linux-kernel@...r.kernel.org,
        opendmb@...il.com
Subject: Re: [PATCH v2 0/4] net: Use strlcpy() for ethtool::get_strings

From: Florian Fainelli <f.fainelli@...il.com>
Date: Fri,  2 Mar 2018 15:08:35 -0800

> 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 which have not been declared as an array
> of ETH_GSTRING_LEN bytes, so let's use strlcpy() instead. This allows the best
> of both worlds: we still keep the efficient memory usage of variably sized
> strings, but we don't copy more than we need to.
> 
> Changes in v2:
> - dropped the 3 other patches that were not necessary
> - use strlcpy() instead of strncpy()

Series applied, thanks Florian.