linux-kernel - [PATCH v2] ASoC: Intel: Skylake: prevent memory leak in snd_skl_parse

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Message-Id: <20190925161922.22479-1-navid.emamdoost@gmail.com>
Date:   Wed, 25 Sep 2019 11:19:19 -0500
From:   Navid Emamdoost <navid.emamdoost@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     emamd001@....edu, smccaman@....edu, kjlu@....edu,
        Navid Emamdoost <navid.emamdoost@...il.com>,
        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>, Enrico Weigelt <info@...ux.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] ASoC: Intel: Skylake: prevent memory leak in snd_skl_parse_uuids

In snd_skl_parse_uuids if allocation for module->instance_id fails, the
allocated memory for module shoulde be released. I changes the
allocation for module to use devm_kzalloc to be resource_managed
allocation and avoid the release in error path.

Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
---
Changes in v2:
	- Changed the allocation for module from kzalloc to devm_kzalloc
---
 sound/soc/intel/skylake/skl-sst-utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/intel/skylake/skl-sst-utils.c b/sound/soc/intel/skylake/skl-sst-utils.c
index d43cbf4a71ef..ac37f04b0eea 100644
--- a/sound/soc/intel/skylake/skl-sst-utils.c
+++ b/sound/soc/intel/skylake/skl-sst-utils.c
@@ -284,7 +284,7 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, const struct firmware *fw,
 	 */
 
 	for (i = 0; i < num_entry; i++, mod_entry++) {
-		module = kzalloc(sizeof(*module), GFP_KERNEL);
+		module = devm_kzalloc(ctx->dev, sizeof(*module), GFP_KERNEL);
 		if (!module) {
 			ret = -ENOMEM;
 			goto free_uuid_list;
-- 
2.17.1