From: Kees Cook <keescook@chromium.org>
To: Justin Stitt <justinstitt@google.com>
Cc: "Arınç ÜNAL" <arinc.unal@arinc9.com>,
"Daniel Golle" <daniel@makrotopia.org>,
"Landen Chao" <Landen.Chao@mediatek.com>,
"DENG Qingfang" <dqfext@gmail.com>,
"Sean Wang" <sean.wang@mediatek.com>,
"Andrew Lunn" <andrew@lunn.ch>,
"Florian Fainelli" <f.fainelli@gmail.com>,
"Vladimir Oltean" <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Matthias Brugger" <matthias.bgg@gmail.com>,
"AngeloGioacchino Del Regno"
<angelogioacchino.delregno@collabora.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH] net: dsa: mt7530: replace deprecated strncpy with ethtool_sprintf
Date: Mon, 9 Oct 2023 11:31:00 -0700 [thread overview]
Message-ID: <202310091130.D951BA0A6@keescook> (raw)
In-Reply-To: <20231009-strncpy-drivers-net-dsa-mt7530-c-v1-1-ec6677a6436a@google.com>
On Mon, Oct 09, 2023 at 06:29:19PM +0000, Justin Stitt wrote:
> `strncpy` is deprecated for use on NUL-terminated destination strings
> [1] and as such we should prefer more robust and less ambiguous string
> interfaces.
>
> ethtool_sprintf() is designed specifically for get_strings() usage.
> Let's replace strncpy in favor of this more robust and easier to
> understand interface.
>
> Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
> Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
> Link: https://github.com/KSPP/linux/issues/90
> Cc: linux-hardening@vger.kernel.org
> Signed-off-by: Justin Stitt <justinstitt@google.com>
Looks correct to me.
Reviewed-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
next prev parent reply other threads:[~2023-10-09 18:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-09 18:29 [PATCH] net: dsa: mt7530: replace deprecated strncpy with ethtool_sprintf Justin Stitt
2023-10-09 18:31 ` Kees Cook [this message]
2023-10-09 18:31 ` Kees Cook
2023-10-09 18:56 ` Kees Cook
2023-10-09 18:34 ` Daniel Golle
2023-10-09 20:33 ` Florian Fainelli
2023-10-10 9:05 ` AngeloGioacchino Del Regno
2023-10-12 0:30 ` patchwork-bot+netdevbpf
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