tree 3d40152243cb327210638f732091e0dbf6725139
parent 4f5b0c735993482bfcc711fefc623a5e7babd011
author Pawel Harlozinski <pawel.harlozinski@linux.intel.com> 1573563756 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1576921321 +0100

ASoC: Jack: Fix NULL pointer dereference in snd_soc_jack_report

commit 8f157d4ff039e03e2ed4cb602eeed2fd4687a58f upstream.

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>