linux-kernel - [PATCH] misc: fastrpc: fix memory leak

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Date:   Wed, 29 Apr 2020 16:29:51 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        arnd@...db.de, Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH] misc: fastrpc: fix memory leak

if misc_register() fails, previously allocated data is left without freeing,
this could result in memory leak.

So fix it!

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 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 e3e085e33d46..9065d3e71ff7 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1613,8 +1613,10 @@ 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