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authorSrinivasa Rao Mandadapu <quic_srivasam@quicinc.com>2022-11-22 09:31:13 +0300
committerMark Brown <broonie@kernel.org>2022-11-22 15:23:00 +0300
commitdb8f91d424fe0ea6db337aca8bc05908bbce1498 (patch)
tree8a4a1fa0fed7bb7a819208d6a82a969f04fa1261 /sound/soc/soc-pcm.c
parentf5f8ad3fcdc49e4d794973007525ed864f93f3fb (diff)
downloadlinux-db8f91d424fe0ea6db337aca8bc05908bbce1498.tar.xz
ASoC: soc-pcm: Add NULL check in BE reparenting
Add NULL check in dpcm_be_reparent API, to handle kernel NULL pointer dereference error. The issue occurred in fuzzing test. Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com> Link: https://lore.kernel.org/r/1669098673-29703-1-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/soc-pcm.c')
-rw-r--r--sound/soc/soc-pcm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 8ceded22a3c4..35a16c3f9591 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -1247,6 +1247,8 @@ static void dpcm_be_reparent(struct snd_soc_pcm_runtime *fe,
return;
be_substream = snd_soc_dpcm_get_substream(be, stream);
+ if (!be_substream)
+ return;
for_each_dpcm_fe(be, stream, dpcm) {
if (dpcm->fe == fe)