Unverified Commit cacea3a9 authored by Pankaj Bharadiya's avatar Pankaj Bharadiya Committed by Mark Brown
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ASoC: dapm: Fix NULL pointer dereference in snd_soc_dapm_free_kcontrol 



w_text_param can be NULL and it is being dereferenced without checking.
Add the missing sanity check to prevent  NULL pointer dereference.

Signed-off-by: default avatarPankaj Bharadiya <pankaj.laxminarayan.bharadiya@intel.com>
Acked-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 8f71370f

sound/soc/soc-dapm.c

+4 −0
Original line number Diff line number Diff line
@@ -3957,6 +3957,10 @@ snd_soc_dapm_free_kcontrol(struct snd_soc_card *card, 
	int count;



	devm_kfree(card->dev, (void *)*private_value);



	if (!w_param_text)

		return;



	for (count = 0 ; count < num_params; count++)

		devm_kfree(card->dev, (void *)w_param_text[count]);

	devm_kfree(card->dev, w_param_text);