linux-kernel - [PATCH] ASoC: Intel: Skylake: fix memory leak of module on error exit path

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Date:   Thu, 29 Sep 2016 18:32:12 +0100
From:   Colin King <colin.king@...onical.com>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Vinod Koul <vinod.koul@...el.com>,
        Dharageswari R <dharageswari.r@...el.com>,
        Senthilnathan Veppur <senthilnathanx.veppur@...el.com>,
        Shreyas NC <shreyas.nc@...el.com>,
        Ramesh Babu <ramesh.babu@...el.com>,
        alsa-devel@...a-project.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] ASoC: Intel: Skylake: fix memory leak of module on error exit path

From: Colin Ian King <colin.king@...onical.com>

Currently there is a memory leak of module on a ENOMEM return path.
Fix this by kfree'ing module before returning.

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 sound/soc/intel/skylake/skl-sst-utils.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/skylake/skl-sst-utils.c b/sound/soc/intel/skylake/skl-sst-utils.c
index d3120ba..8dc0303 100644
--- a/sound/soc/intel/skylake/skl-sst-utils.c
+++ b/sound/soc/intel/skylake/skl-sst-utils.c
@@ -354,8 +354,10 @@ int snd_skl_parse_uuids(struct sst_dsp *ctx, const struct firmware *fw,
 		module->max_instance = mod_entry->instance_max_count;
 		size = sizeof(int) * mod_entry->instance_max_count;
 		module->instance_id = devm_kzalloc(ctx->dev, size, GFP_KERNEL);
-		if (!module->instance_id)
+		if (!module->instance_id) {
+			kfree(module);
 			return -ENOMEM;
+		}
 
 		list_add_tail(&module->list, &skl->uuid_list);
 
-- 
2.9.3