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Subject[PATCH][next] ASoC: topology: fix memory leak on se when kstrdup fails
Date
From: Colin Ian King <colin.king@canonical.com>

In the case when kstrdup fails to allocation memory for kc[i].name
the error exit path does not free up 'se' leading to a small leak.
Fix this by kfree'ing 'se' before jumping to err_se and since
kc[i].private_value is zero we end up avoiding kfree'ing the
rest of the unallocated objects in se.

Detected by CoverityScan, CID#1466991 ("Reseource leak")

Fixes: 267e2c6fd7ca ("ASoC: topology: Fix kcontrol name string handling")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
sound/soc/soc-topology.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index fa27d0fca6dc..71b20d795b51 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1325,8 +1325,10 @@ static struct snd_kcontrol_new *soc_tplg_dapm_widget_denum_create(
ec->hdr.name);

kc[i].name = kstrdup(ec->hdr.name, GFP_KERNEL);
- if (kc[i].name == NULL)
+ if (kc[i].name == NULL) {
+ kfree(se);
goto err_se;
+ }
kc[i].private_value = (long)se;
kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kc[i].access = ec->hdr.access;
--
2.15.1
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