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Subject[PATCH AUTOSEL 6.3 08/67] ASoC: SOF: amd: Fix NULL pointer crash in acp_sof_ipc_msg_data function
Date
From: V sujith kumar Reddy <Vsujithkumar.Reddy@amd.com>

[ Upstream commit 051d71e073614a72ad423d6dacba37a7eeff274d ]

Check substream and runtime variables before assigning.

Signed-off-by: V sujith kumar Reddy <Vsujithkumar.Reddy@amd.com
Link: https://lore.kernel.org/r/20230508070510.6100-1-Vsujithkumar.Reddy@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/sof/amd/acp-ipc.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/amd/acp-ipc.c b/sound/soc/sof/amd/acp-ipc.c
index 4e0c48a361599..749e856dc6011 100644
--- a/sound/soc/sof/amd/acp-ipc.c
+++ b/sound/soc/sof/amd/acp-ipc.c
@@ -209,7 +209,12 @@ int acp_sof_ipc_msg_data(struct snd_sof_dev *sdev, struct snd_sof_pcm_stream *sp
acp_mailbox_read(sdev, offset, p, sz);
} else {
struct snd_pcm_substream *substream = sps->substream;
- struct acp_dsp_stream *stream = substream->runtime->private_data;
+ struct acp_dsp_stream *stream;
+
+ if (!substream || !substream->runtime)
+ return -ESTRPIPE;
+
+ stream = substream->runtime->private_data;

if (!stream)
return -ESTRPIPE;
--
2.39.2
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