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From: Miaoqian Lin <linmq006@gmail.com>
To: Shengjiu Wang <shengjiu.wang@gmail.com>,
	Xiubo Li <Xiubo.Lee@gmail.com>,
	Fabio Estevam <festevam@gmail.com>,
	Nicolin Chen <nicoleotsuka@gmail.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
	Takashi Iwai <tiwai@suse.com>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	NXP Linux Team <linux-imx@nxp.com>,
	Ye Guojin <ye.guojin@zte.com.cn>,
	alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] ASoC: imx-hdmi: Fix refcount leak in imx_hdmi_probe
Date: Wed, 11 May 2022 09:27:40 +0400	[thread overview]
Message-ID: <20220511052740.46903-1-linmq006@gmail.com> (raw)

of_find_device_by_node() takes reference, we should use put_device()
to release it. when devm_kzalloc() fails, it doesn't have a
put_device(), it will cause refcount leak.
Add missing put_device() to fix this.

Fixes: 6a5f850aa83a ("ASoC: fsl: Add imx-hdmi machine driver")
Fixes: f670b274f7f6 ("ASoC: imx-hdmi: add put_device() after of_find_device_by_node()")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 sound/soc/fsl/imx-hdmi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/fsl/imx-hdmi.c b/sound/soc/fsl/imx-hdmi.c
index 929f69b758af..ec149dc73938 100644
--- a/sound/soc/fsl/imx-hdmi.c
+++ b/sound/soc/fsl/imx-hdmi.c
@@ -126,6 +126,7 @@ static int imx_hdmi_probe(struct platform_device *pdev)
 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 	if (!data) {
 		ret = -ENOMEM;
+		put_device(&cpu_pdev->dev);
 		goto fail;
 	}
 
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Miaoqian Lin <linmq006@gmail.com>
To: Shengjiu Wang <shengjiu.wang@gmail.com>,
	Xiubo Li <Xiubo.Lee@gmail.com>,
	Fabio Estevam <festevam@gmail.com>,
	Nicolin Chen <nicoleotsuka@gmail.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>,
	Takashi Iwai <tiwai@suse.com>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	NXP Linux Team <linux-imx@nxp.com>,
	Ye Guojin <ye.guojin@zte.com.cn>,
	alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] ASoC: imx-hdmi: Fix refcount leak in imx_hdmi_probe
Date: Wed, 11 May 2022 09:27:40 +0400	[thread overview]
Message-ID: <20220511052740.46903-1-linmq006@gmail.com> (raw)

of_find_device_by_node() takes reference, we should use put_device()
to release it. when devm_kzalloc() fails, it doesn't have a
put_device(), it will cause refcount leak.
Add missing put_device() to fix this.

Fixes: 6a5f850aa83a ("ASoC: fsl: Add imx-hdmi machine driver")
Fixes: f670b274f7f6 ("ASoC: imx-hdmi: add put_device() after of_find_device_by_node()")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 sound/soc/fsl/imx-hdmi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/fsl/imx-hdmi.c b/sound/soc/fsl/imx-hdmi.c
index 929f69b758af..ec149dc73938 100644
--- a/sound/soc/fsl/imx-hdmi.c
+++ b/sound/soc/fsl/imx-hdmi.c
@@ -126,6 +126,7 @@ static int imx_hdmi_probe(struct platform_device *pdev)
 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 	if (!data) {
 		ret = -ENOMEM;
+		put_device(&cpu_pdev->dev);
 		goto fail;
 	}
 
-- 
2.25.1


_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2022-05-11  5:27 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-11  5:27 Miaoqian Lin [this message]
2022-05-11  5:27 ` [PATCH] ASoC: imx-hdmi: Fix refcount leak in imx_hdmi_probe Miaoqian Lin
2022-05-12 14:12 ` Mark Brown
2022-05-12 14:12   ` Mark Brown

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