6.11-stable review patch. If anyone has any objections, please let me know.
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From: Charles Han hanchunchao@inspur.com
[ 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@inspur.com Link: https://patch.msgid.link/20241118084553.4195-1-hanchunchao@inspur.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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;