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From: "Mirela Rabulea (OSS)" <mirela.rabulea@oss.nxp.com>
To: mchehab@kernel.org, hverkuil-cisco@xs4all.nl
Cc: linux-imx@nxp.com, linux-media@vger.kernel.org,
	shawnguo@kernel.org, s.hauer@pengutronix.de,
	kernel@pengutronix.de, festevam@gmail.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, robert.chiras@nxp.com,
	laurentiu.palcu@nxp.com, Mirela Rabulea <mirela.rabulea@nxp.com>
Subject: [PATCH] media: imx-jpeg: Fix double free in mxc_jpeg_remove
Date: Tue,  6 Apr 2021 20:34:28 +0300	[thread overview]
Message-ID: <20210406173428.19283-1-mirela.rabulea@oss.nxp.com> (raw)

From: Mirela Rabulea <mirela.rabulea@nxp.com>

The video_unregister_device already calls video_device_release,
so remove video_device_release, to avoid a double free, when removing
the module. This showed up in a repeated rmmod/insmod scenario.

Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
---
 drivers/media/platform/imx-jpeg/mxc-jpeg.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
index 2d29558f1864..ca1b7e8c65f4 100644
--- a/drivers/media/platform/imx-jpeg/mxc-jpeg.c
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
@@ -2099,7 +2099,6 @@ static int mxc_jpeg_remove(struct platform_device *pdev)
 		mxc_jpeg_free_slot_data(jpeg, slot);
 
 	video_unregister_device(jpeg->dec_vdev);
-	video_device_release(jpeg->dec_vdev);
 	v4l2_m2m_release(jpeg->m2m_dev);
 	v4l2_device_unregister(&jpeg->v4l2_dev);
 	mxc_jpeg_detach_pm_domains(jpeg);
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: "Mirela Rabulea (OSS)" <mirela.rabulea@oss.nxp.com>
To: mchehab@kernel.org, hverkuil-cisco@xs4all.nl
Cc: linux-imx@nxp.com, linux-media@vger.kernel.org,
	shawnguo@kernel.org, s.hauer@pengutronix.de,
	kernel@pengutronix.de, festevam@gmail.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, robert.chiras@nxp.com,
	laurentiu.palcu@nxp.com, Mirela Rabulea <mirela.rabulea@nxp.com>
Subject: [PATCH] media: imx-jpeg: Fix double free in mxc_jpeg_remove
Date: Tue,  6 Apr 2021 20:34:28 +0300	[thread overview]
Message-ID: <20210406173428.19283-1-mirela.rabulea@oss.nxp.com> (raw)

From: Mirela Rabulea <mirela.rabulea@nxp.com>

The video_unregister_device already calls video_device_release,
so remove video_device_release, to avoid a double free, when removing
the module. This showed up in a repeated rmmod/insmod scenario.

Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
---
 drivers/media/platform/imx-jpeg/mxc-jpeg.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
index 2d29558f1864..ca1b7e8c65f4 100644
--- a/drivers/media/platform/imx-jpeg/mxc-jpeg.c
+++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c
@@ -2099,7 +2099,6 @@ static int mxc_jpeg_remove(struct platform_device *pdev)
 		mxc_jpeg_free_slot_data(jpeg, slot);
 
 	video_unregister_device(jpeg->dec_vdev);
-	video_device_release(jpeg->dec_vdev);
 	v4l2_m2m_release(jpeg->m2m_dev);
 	v4l2_device_unregister(&jpeg->v4l2_dev);
 	mxc_jpeg_detach_pm_domains(jpeg);
-- 
2.17.1


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             reply	other threads:[~2021-04-06 17:34 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-06 17:34 Mirela Rabulea (OSS) [this message]
2021-04-06 17:34 ` [PATCH] media: imx-jpeg: Fix double free in mxc_jpeg_remove Mirela Rabulea (OSS)

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