6.1-stable review patch. If anyone has any objections, please let me know.
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From: Henry Martin bsdhenrymartin@gmail.com
[ Upstream commit 93d34608fd162f725172e780b1c60cc93a920719 ]
devm_kasprintf() returns NULL when memory allocation fails. Currently, imx_card_probe() does not check for this case, which results in a NULL pointer dereference.
Add NULL check after devm_kasprintf() to prevent this issue.
Fixes: aa736700f42f ("ASoC: imx-card: Add imx-card machine driver") Signed-off-by: Henry Martin bsdhenrymartin@gmail.com Reviewed-by: Frank Li Frank.Li@nxp.com Link: https://patch.msgid.link/20250401142510.29900-1-bsdhenrymartin@gmail.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/fsl/imx-card.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c index 9c1631c444229..c6d55b21f9496 100644 --- a/sound/soc/fsl/imx-card.c +++ b/sound/soc/fsl/imx-card.c @@ -759,6 +759,8 @@ static int imx_card_probe(struct platform_device *pdev) data->dapm_routes[i].sink = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s", i + 1, "Playback"); + if (!data->dapm_routes[i].sink) + return -ENOMEM; data->dapm_routes[i].source = "CPU-Playback"; } } @@ -776,6 +778,8 @@ static int imx_card_probe(struct platform_device *pdev) data->dapm_routes[i].source = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s", i + 1, "Capture"); + if (!data->dapm_routes[i].source) + return -ENOMEM; data->dapm_routes[i].sink = "CPU-Capture"; } }