Thread (423 messages) 423 messages, 2 authors, 2021-07-19
STALE1821d

[PATCH 4.19 110/421] media: s5p-g2d: Fix a memory leak on ctx->fh.m2m_ctx

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-07-19 16:12:53
Also in: lkml
Subsystem: media input infrastructure (v4l/dvb), the rest · Maintainers: Mauro Carvalho Chehab, Linus Torvalds

From: Dillon Min <redacted>

[ Upstream commit 5d11e6aad1811ea293ee2996cec9124f7fccb661 ]

The m2m_ctx resources was allocated by v4l2_m2m_ctx_init() in g2d_open()
should be freed from g2d_release() when it's not used.

Fix it

Fixes: 918847341af0 ("[media] v4l: add G2D driver for s5p device family")
Signed-off-by: Dillon Min <redacted>
Signed-off-by: Hans Verkuil <redacted>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/platform/s5p-g2d/g2d.c | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/drivers/media/platform/s5p-g2d/g2d.c b/drivers/media/platform/s5p-g2d/g2d.c
index 1f58574d0b96..4cf5b559420f 100644
--- a/drivers/media/platform/s5p-g2d/g2d.c
+++ b/drivers/media/platform/s5p-g2d/g2d.c
@@ -285,6 +285,9 @@ static int g2d_release(struct file *file)
 	struct g2d_dev *dev = video_drvdata(file);
 	struct g2d_ctx *ctx = fh2ctx(file->private_data);
 
+	mutex_lock(&dev->mutex);
+	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
+	mutex_unlock(&dev->mutex);
 	v4l2_ctrl_handler_free(&ctx->ctrl_handler);
 	v4l2_fh_del(&ctx->fh);
 	v4l2_fh_exit(&ctx->fh);
-- 
2.30.2


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