Unverified Commit 8f157d4f authored Nov 12, 2019 by Pawel Harlozinski Committed by Mark Brown Nov 12, 2019

ASoC: Jack: Fix NULL pointer dereference in snd_soc_jack_report



Check for existance of jack before tracing.
NULL pointer dereference has been reported by KASAN while unloading
machine driver (snd_soc_cnl_rt274).

Signed-off-by: Pawel Harlozinski <pawel.harlozinski@linux.intel.com>
Link: https://lore.kernel.org/r/20191112130237.10141-1-pawel.harlozinski@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

parent 130d3e90

sound/soc/soc-jack.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -82,10 +82,9 @@ void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask)
		unsigned int sync = 0;
		int enable;

		trace_snd_soc_jack_report(jack, mask, status);

		if (!jack)
		return;
		trace_snd_soc_jack_report(jack, mask, status);

		dapm = &jack->card->dapm;

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