linux-kernel - [PATCH] [ASoC][soc-dapm] : memory leak in the func snd_soc_dapm_new

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Date:   Fri, 26 Jul 2019 08:45:42 +0530
From:   Satendra Singh Thakur <sst2005@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Satendra Singh Thakur <sst2005@...il.com>
Subject: [PATCH] [ASoC][soc-dapm] : memory leak in the func snd_soc_dapm_new_dai

In the func snd_soc_dapm_new_dai, if the inner func
snd_soc_dapm_alloc_kcontrol fails, there will be memory leak.
The label param_fail wont free memory which is allocated by
the func devm_kcalloc. Hence new label is created for this purpose.

Signed-off-by: Satendra Singh Thakur <sst2005@...il.com>
---
 sound/soc/soc-dapm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index f013b24c050a..f62d41ee6d68 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -4095,7 +4095,7 @@ snd_soc_dapm_new_dai(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd,
 						w_param_text, &private_value);
 		if (!template.kcontrol_news) {
 			ret = -ENOMEM;
-			goto param_fail;
+			goto outfree_w_param;
 		}
 	} else {
 		w_param_text = NULL;
@@ -4114,6 +4114,7 @@ snd_soc_dapm_new_dai(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd,
 
 outfree_kcontrol_news:
 	devm_kfree(card->dev, (void *)template.kcontrol_news);
+outfree_w_param:
 	snd_soc_dapm_free_kcontrol(card, &private_value,
 				   rtd->dai_link->num_params, w_param_text);
 param_fail:
-- 
2.17.1