linux-kernel - [PATCH next 1/2] octeontx2-pf: fix netdev memory leak in rvu_rep

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Message-ID: <20241216070516.4036749-1-harshit.m.mogalapalli@oracle.com>
Date: Sun, 15 Dec 2024 23:05:14 -0800
From: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
To: Sunil Goutham <sgoutham@...vell.com>, Geetha sowjanya <gakula@...vell.com>,
        Subbaraya Sundeep <sbhatta@...vell.com>,
        hariprasad <hkelam@...vell.com>,
        Bharat Bhushan <bbhushan2@...vell.com>,
        Andrew Lunn <andrew+netdev@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: dan.carpenter@...aro.org, kernel-janitors@...r.kernel.org,
        error27@...il.com, harshit.m.mogalapalli@...cle.com
Subject: [PATCH next 1/2] octeontx2-pf: fix netdev memory leak in rvu_rep_create()

When rvu_rep_devlink_port_register() fails, free_netdev(ndev) for this
incomplete iteration before going to "exit:" label.

Fixes: 3937b7308d4f ("octeontx2-pf: Create representor netdev")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
---
This is found by Smatch, based on static analysis, only compile tested.
---
 drivers/net/ethernet/marvell/octeontx2/nic/rep.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 232b10740c13..9e3fcbae5dee 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -680,8 +680,10 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
 		ndev->features |= ndev->hw_features;
 		eth_hw_addr_random(ndev);
 		err = rvu_rep_devlink_port_register(rep);
-		if (err)
+		if (err) {
+			free_netdev(ndev);
 			goto exit;
+		}
 
 		SET_NETDEV_DEVLINK_PORT(ndev, &rep->dl_port);
 		err = register_netdev(ndev);
-- 
2.39.3