linux-kernel - [PATCH] drivers/net: release skb on failure

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Message-Id: <20190918044521.14953-1-navid.emamdoost@gmail.com>
Date:   Tue, 17 Sep 2019 23:45:21 -0500
From:   Navid Emamdoost <navid.emamdoost@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     emamd001@....edu, smccaman@....edu, kjlu@....edu,
        Navid Emamdoost <navid.emamdoost@...il.com>,
        Manish Chopra <manishc@...vell.com>,
        GR-Linux-NIC-Dev@...vell.com,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drivers/net: release skb on failure

In ql_run_loopback_test, ql_lb_send does not release skb when fails. So
it must be released before returning.

Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
---
 drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c b/drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c
index a6886cc5654c..d539b71b2a5c 100644
--- a/drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c
@@ -544,8 +544,10 @@ static int ql_run_loopback_test(struct ql_adapter *qdev)
 		skb_put(skb, size);
 		ql_create_lb_frame(skb, size);
 		rc = ql_lb_send(skb, qdev->ndev);
-		if (rc != NETDEV_TX_OK)
+		if (rc != NETDEV_TX_OK) {
+			dev_kfree_skb_any(skb);
 			return -EPIPE;
+		}
 		atomic_inc(&qdev->lb_count);
 	}
 	/* Give queue time to settle before testing results. */
-- 
2.17.1