On Thu, Jul 25, 2019 at 09:43:35PM +0530, Satendra Singh Thakur wrote:
> 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 <thakursatendra2...@yahoo.co.in>
> ---
> 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);
This is not necessary snd_soc_dapm_alloc_kcontrol calls
snd_soc_dapm_free_kcontrol on its internal error path.
Thanks,
Charles
