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| author | Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com> | 2022-11-22 12:01:13 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-14 11:28:26 +0100 |
| commit | e7166d6821c15f3516bcac8ae3f155924da1908c (patch) | |
| tree | 6d38df86e61e24c55ee80b52830bb52ddb5bb63d /sound | |
| parent | 2f46e95bf344abc4e74f8158901d32a869e0adb6 (diff) | |
| download | linux-stable-e7166d6821c15f3516bcac8ae3f155924da1908c.tar.gz linux-stable-e7166d6821c15f3516bcac8ae3f155924da1908c.tar.bz2 linux-stable-e7166d6821c15f3516bcac8ae3f155924da1908c.zip | |
ASoC: soc-pcm: Add NULL check in BE reparenting
[ Upstream commit db8f91d424fe0ea6db337aca8bc05908bbce1498 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-pcm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index c03b653bf6ff..1fabb285b016 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1266,6 +1266,8 @@ 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; list_for_each_entry(dpcm, &be->dpcm[stream].fe_clients, list_fe) { if (dpcm->fe == fe) |