linux-hardening - Re: [PATCH v2] brcmfmac: replace deprecated strncpy

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Date: Tue, 17 Oct 2023 10:29:14 -0700
From: Justin Stitt <justinstitt@...gle.com>
To: Kalle Valo <kvalo@...nel.org>
Cc: Franky Lin <franky.lin@...adcom.com>, Arend van Spriel <aspriel@...il.com>, 
	Hante Meuleman <hante.meuleman@...adcom.com>, linux-wireless@...r.kernel.org, 
	brcm80211-dev-list.pdl@...adcom.com, SHA-cyfmac-dev-list@...ineon.com, 
	linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2] brcmfmac: replace deprecated strncpy

On Tue, Oct 17, 2023 at 9:54 AM Kalle Valo <kvalo@...nel.org> wrote:
>
> Franky Lin <franky.lin@...adcom.com> writes:
>
> >  Hi Justin,
> >
> > On Mon, Oct 16, 2023 at 3:14 PM Justin Stitt <justinstitt@...gle.com> 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.
> >>
> >> This patch replaces multiple strncpy uses. For easier reading, I'll list
> >> each destination buffer and mention whether it requires either
> >> NUL-termination or NUL-padding.
> >
> > Kudos to the detailed analysis of each instance. One thing I can think
> > of to make this better is to split it into smaller patches so if any
> > regression is observed, only the specific code causing it needs to be
> > reverted. Maybe instance 2, 3, 4 can be handled in one patch since
> > they are touching the country code in one file. The other instances
> > each can be an individual patch.
> >
> > The "brcmfmac" in the title is not accurate. The change touches both
> > brcmfmac and brcmsmac. So "brcm80211" would be more appropriate.
>
> Please also add "wifi:" to the title, see the wiki link below for more
> info.

Sure thing :)

>
> --
> https://patchwork.kernel.org/project/linux-wireless/list/
>
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches

Thanks
Justin