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Unverified Commit f53c4c20 authored by Liam Girdwood's avatar Liam Girdwood Committed by Mark Brown
Browse files

ASoC: topology: Check widget kcontrols before deref 



Validate the topology input before we dereference the pointer.

Signed-off-by: default avatarLiam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent feb12f0c

sound/soc/soc-topology.c

+2 −2
Original line number Diff line number Diff line
@@ -513,7 +513,7 @@ static void remove_widget(struct snd_soc_component *comp, 
	 */

	if (dobj->widget.kcontrol_type == SND_SOC_TPLG_TYPE_ENUM) {

		/* enumerated widget mixer */

		for (i = 0; i < w->num_kcontrols; i++) {

		for (i = 0; w->kcontrols != NULL && i < w->num_kcontrols; i++) {

			struct snd_kcontrol *kcontrol = w->kcontrols[i];

			struct soc_enum *se =

				(struct soc_enum *)kcontrol->private_value;
@@ -530,7 +530,7 @@ static void remove_widget(struct snd_soc_component *comp, 
		}

	} else {

		/* volume mixer or bytes controls */

		for (i = 0; i < w->num_kcontrols; i++) {

		for (i = 0; w->kcontrols != NULL && i < w->num_kcontrols; i++) {

			struct snd_kcontrol *kcontrol = w->kcontrols[i];



			if (dobj->widget.kcontrol_type