linux-hardening - Re: [PATCH v3 1/2] lib: introduce simple error-checking wrapper for memparse()

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Message-ID: <202601080905.D1CC8CC@keescook>
Date: Thu, 8 Jan 2026 09:06:49 -0800
From: Kees Cook <kees@...nel.org>
To: Dmitry Antipov <dmantipov@...dex.ru>
Cc: Carlos Maiolino <cem@...nel.org>, Christoph Hellwig <hch@...radead.org>,
	Andy Shevchenko <andy@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-xfs@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v3 1/2] lib: introduce simple error-checking wrapper for
 memparse()

On Thu, Jan 08, 2026 at 07:52:15PM +0300, Dmitry Antipov wrote:
> Introduce 'memvalue()' which uses 'memparse()' to parse a string
> with optional memory suffix into a non-negative number. If parsing
> has succeeded, returns 0 and stores the result at the location
> specified by the second argument. Otherwise returns -EINVAL and
> leaves the location untouched.
> 
> Suggested-by: Christoph Hellwig <hch@...radead.org>
> Suggested-by: Kees Cook <kees@...nel.org>
> Signed-off-by: Dmitry Antipov <dmantipov@...dex.ru>

LGTM, thanks!

Reviewed-by: Kees Cook <kees@...nel.org>

-- 
Kees Cook