linux-kernel - Re: [PATCH] ASoC: Intel: Skylake: prevent memory leak in snd_skl_parse

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20190925104851.GC5933@smile.fi.intel.com>
Date:   Wed, 25 Sep 2019 13:48:51 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Navid Emamdoost <navid.emamdoost@...il.com>
Cc:     emamd001@....edu, kjlu@....edu, smccaman@....edu,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Enrico Weigelt <info@...ux.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: Intel: Skylake: prevent memory leak in
 snd_skl_parse_uuids

On Tue, Sep 24, 2019 at 11:08:38PM -0500, Navid Emamdoost wrote:
> In snd_skl_parse_uuids if allocation for module->instance_id fails, the
> allocated memory for module shoulde be released.

Since it's using devm_*() for the second allocation it would be cleaner to
either switch it to regular kcalloc() or to switch the first one to
devm_kzalloc(), whatever suits better.

>  		module->instance_id = devm_kzalloc(ctx->dev, size, GFP_KERNEL);
>  		if (!module->instance_id) {

> +			kfree(module);

-- 
With Best Regards,
Andy Shevchenko