6.11-stable review patch. If anyone has any objections, please let me know.
------------------
From: Charles Han <hanchunchao@xxxxxxxxxx>
[ Upstream commit e038f43edaf0083f6aa7c9415d86cf28dfd152f9 ]
devm_kasprintf() can return a NULL pointer on failure,but this
returned value in imx_audmix_probe() is not checked.
Add NULL check in imx_audmix_probe(), to handle kernel NULL
pointer dereference error.
Fixes: 05d996e11348 ("ASoC: imx-audmix: Split capture device for audmix")
Signed-off-by: Charles Han <hanchunchao@xxxxxxxxxx>
Link: https://patch.msgid.link/20241118084553.4195-1-hanchunchao@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/fsl/imx-audmix.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/sound/soc/fsl/imx-audmix.c b/sound/soc/fsl/imx-audmix.c
index 6fbcf33fd0dea..8e7b75cf64db4 100644
--- a/sound/soc/fsl/imx-audmix.c
+++ b/sound/soc/fsl/imx-audmix.c
@@ -275,6 +275,9 @@ static int imx_audmix_probe(struct platform_device *pdev)
/* Add AUDMIX Backend */
be_name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
"audmix-%d", i);
+ if (!be_name)
+ return -ENOMEM;
+
priv->dai[num_dai + i].cpus = &dlc[1];
priv->dai[num_dai + i].codecs = &snd_soc_dummy_dlc;
--
2.43.0
