ASoC: dapm: Fix kcontrol widget name memory management
The name field of the widget template is only used inside
snd_soc_dapm_new_control_unlocked() which allocates a copy for the actual
widget. This means we need to free the name allocated for the template in
dapm_kcontrol_data_alloc() and not the name of the actual widget in
dapm_kcontrol_free(). Otherwise we get a double free on the widget name and
a memory leak on the template name.
Fixes: 773da9b358bf ("ASoC: dapm: Append "Autodisable" to autodisable widget names")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 1779430..9f270c0 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -358,9 +358,10 @@
data->widget =
snd_soc_dapm_new_control_unlocked(widget->dapm,
&template);
+ kfree(name);
if (!data->widget) {
ret = -ENOMEM;
- goto err_name;
+ goto err_data;
}
}
break;
@@ -391,9 +392,10 @@
data->widget = snd_soc_dapm_new_control_unlocked(
widget->dapm, &template);
+ kfree(name);
if (!data->widget) {
ret = -ENOMEM;
- goto err_name;
+ goto err_data;
}
snd_soc_dapm_add_path(widget->dapm, data->widget,
@@ -408,8 +410,6 @@
return 0;
-err_name:
- kfree(name);
err_data:
kfree(data);
return ret;
@@ -418,8 +418,6 @@
static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
{
struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
- if (data->widget)
- kfree(data->widget->name);
kfree(data->wlist);
kfree(data);
}
