linux-kernel - [PATCH v2] media: rj54n1cb0c: Fix memleak in rj54n1

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Message-ID: <tencent_9B4FC2E406B836606B07ACC3E34B41023505@qq.com>
Date: Mon, 23 Jun 2025 10:02:32 +0800
From: Zhang Shurong <zhang_shurong@...mail.com>
To: jacopo@...ndi.org
Cc: mchehab@...nel.org,
	u.kleine-koenig@...gutronix.de,
	hverkuil@...all.nl,
	linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Zhang Shurong <zhang_shurong@...mail.com>
Subject: [PATCH v2] media: rj54n1cb0c: Fix memleak in rj54n1_probe()

rj54n1_probe() won't clean all the allocated resources in fail
path, which may causes the memleaks. Add v4l2_ctrl_handler_free() to
prevent memleak.

Fixes: f187352dcd45 ("media: i2c: Copy rj54n1cb0c soc_camera sensor driver")
Signed-off-by: Zhang Shurong <zhang_shurong@...mail.com>
---
Changes in v2:
- fixed compile error
---
 drivers/media/i2c/rj54n1cb0c.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/rj54n1cb0c.c b/drivers/media/i2c/rj54n1cb0c.c
index b7ca39f63dba..5645dbb6b38b 100644
--- a/drivers/media/i2c/rj54n1cb0c.c
+++ b/drivers/media/i2c/rj54n1cb0c.c
@@ -1330,8 +1330,10 @@ static int rj54n1_probe(struct i2c_client *client)
 	v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,
 			V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
 	rj54n1->subdev.ctrl_handler = &rj54n1->hdl;
-	if (rj54n1->hdl.error)
+	if (rj54n1->hdl.error) {
+		v4l2_ctrl_handler_free(&rj54n1->hdl);
 		return rj54n1->hdl.error;
+    }
 
 	rj54n1->clk_div		= clk_div;
 	rj54n1->rect.left	= RJ54N1_COLUMN_SKIP;
-- 
2.39.5