linux-kernel - Re: [PATCH] backlight: pwm_bl: Avoid open coded arithmetic in memory allocation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220207162107.eblu6rxyhkuyyqnf@maple.lan>
Date:   Mon, 7 Feb 2022 16:21:07 +0000
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Lee Jones <lee.jones@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Helge Deller <deller@....de>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-pwm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH] backlight: pwm_bl: Avoid open coded arithmetic in memory
 allocation

On Sat, Feb 05, 2022 at 08:40:48AM +0100, Christophe JAILLET wrote:
> kmalloc_array()/kcalloc() should be used to avoid potential overflow when
> a multiplication is needed to compute the size of the requested memory.
> 
> So turn a kzalloc()+explicit size computation into an equivalent kcalloc().
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>


Daniel.