linux-kernel - [PATCH] net: mana: Fix a memory leak in an error handling path in 'mana_create

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Message-Id: <578bcaa1a9d6916c86aaecf65f205492affb6fc8.1624196430.git.christophe.jaillet@wanadoo.fr>
Date:   Sun, 20 Jun 2021 15:43:28 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
        wei.liu@...nel.org, decui@...rosoft.com, davem@...emloft.net,
        kuba@...nel.org, shacharr@...rosoft.com, gustavoars@...nel.org
Cc:     linux-hyperv@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] net: mana: Fix a memory leak in an error handling path in 'mana_create_txq()'

If this test fails we must free some resources as in all the other error
handling paths of this function.

Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/ethernet/microsoft/mana/mana_en.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index 46aee2c49f1b..fff78900fc8a 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -1230,8 +1230,10 @@ static int mana_create_txq(struct mana_port_context *apc,
 
 		cq->gdma_id = cq->gdma_cq->id;
 
-		if (WARN_ON(cq->gdma_id >= gc->max_num_cqs))
-			return -EINVAL;
+		if (WARN_ON(cq->gdma_id >= gc->max_num_cqs)) {
+			err = -EINVAL;
+			goto out;
+		}
 
 		gc->cq_table[cq->gdma_id] = cq->gdma_cq;
 
-- 
2.30.2