linux-hardening - Re: [PATCH -next] eeprom: at25: Replace strncpy() with strscpy()

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Date:   Wed, 26 Jan 2022 12:00:14 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Ralph Siemsen <ralph.siemsen@...aro.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Arnd Bergmann <arnd@...db.de>,
        Jiri Prchal <jiri.prchal@...ignal.cz>,
        Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH -next] eeprom: at25: Replace strncpy() with strscpy()

On Wed, Jan 26, 2022 at 02:48:39PM -0500, Ralph Siemsen wrote:
> Hi Kees,
> 
> On Tue, Jan 18, 2022 at 10:20:47AM -0800, Kees Cook wrote:
> > Use strscpy() instead of strncpy(), since its use has been deprecated[1].
> > 
> > [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
> 
> Along with your other fix to restore the missing kzalloc(), I tested this
> change on 32-bit arm system, and it worked as expected.
> 
> Tested-by: Ralph Siemsen <ralph.siemsen@...aro.org>

Thanks!

-- 
Kees Cook