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From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: gregkh@linuxfoundation.org
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
	arnd@arndb.de,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH v2] misc: fastrpc: Fix an incomplete memory release in fastrpc_rpmsg_probe()
Date: Mon, 11 May 2020 17:27:22 +0100
Message-ID: <20200511162722.2552-1-srinivas.kandagatla@linaro.org> (raw)

fastrpc_channel_ctx is not freed if misc_register() fails, this would
lead to a memory leak. Fix this leak by adding kfree in misc_register()
error path.

Fixes: 278d56f970ae ("misc: fastrpc: Reference count channel context")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
Changes since v1:
	- Update subject as suggested
	- added fixes tag

 drivers/misc/fastrpc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index c562e285e0f4..07065728e39f 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1615,8 +1615,10 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 					    domains[domain_id]);
 	data->miscdev.fops = &fastrpc_fops;
 	err = misc_register(&data->miscdev);
-	if (err)
+	if (err) {
+		kfree(data);
 		return err;
+	}
 
 	kref_init(&data->refcount);
 
-- 
2.21.0


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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-11 16:27 Srinivas Kandagatla [this message]
2020-05-12  0:57 ` Bjorn Andersson

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