netdev - [PATCH net v2] net: ehea: fix possible memory leak in ehea_register

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Message-ID: <20221025130011.1071357-1-yangyingliang@huawei.com>
Date:   Tue, 25 Oct 2022 21:00:11 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <netdev@...r.kernel.org>
CC:     <dougmill@...ux.ibm.com>, <davem@...emloft.net>, <kuba@...nel.org>,
        <pabeni@...hat.com>
Subject: [PATCH net v2] net: ehea: fix possible memory leak in ehea_register_port()

If of_device_register() returns error, the of node and the
name allocated in dev_set_name() is leaked, call put_device()
to give up the reference that was set in device_initialize(),
so that of node is put in logical_port_release() and the name
is freed in kobject_cleanup().

Fixes: 1acf2318dd13 ("ehea: dynamic add / remove port")
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
v2:
  Update commit and add a fix tag.
---
 drivers/net/ethernet/ibm/ehea/ehea_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c
index 294bdbbeacc3..b4aff59b3eb4 100644
--- a/drivers/net/ethernet/ibm/ehea/ehea_main.c
+++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c
@@ -2900,6 +2900,7 @@ static struct device *ehea_register_port(struct ehea_port *port,
 	ret = of_device_register(&port->ofdev);
 	if (ret) {
 		pr_err("failed to register device. ret=%d\n", ret);
+		put_device(&port->ofdev.dev);
 		goto out;
 	}
 
-- 
2.25.1