netdev - [PATCH net 5/5] gve: Correct SKB queue index validation.

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Message-Id: <20210517210815.3751286-6-awogbemila@google.com>
Date:   Mon, 17 May 2021 14:08:15 -0700
From:   David Awogbemila <awogbemila@...gle.com>
To:     netdev@...r.kernel.org
Cc:     David Awogbemila <awogbemila@...gle.com>,
        Willem de Brujin <willemb@...gle.com>
Subject: [PATCH net 5/5] gve: Correct SKB queue index validation.

SKBs with skb_get_queue_mapping(skb) == tx_cfg.num_queues should also be
considered invalid.

Fixes: f5cedc84a30d ("gve: Add transmit and receive support")
Signed-off-by: David Awogbemila <awogbemila@...gle.com>
Acked-by: Willem de Brujin <willemb@...gle.com>
---
 drivers/net/ethernet/google/gve/gve_tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/google/gve/gve_tx.c b/drivers/net/ethernet/google/gve/gve_tx.c
index bb57c42872b4..3e04a3973d68 100644
--- a/drivers/net/ethernet/google/gve/gve_tx.c
+++ b/drivers/net/ethernet/google/gve/gve_tx.c
@@ -593,7 +593,7 @@ netdev_tx_t gve_tx(struct sk_buff *skb, struct net_device *dev)
 	struct gve_tx_ring *tx;
 	int nsegs;
 
-	WARN(skb_get_queue_mapping(skb) > priv->tx_cfg.num_queues,
+	WARN(skb_get_queue_mapping(skb) >= priv->tx_cfg.num_queues,
 	     "skb queue index out of range");
 	tx = &priv->tx[skb_get_queue_mapping(skb)];
 	if (unlikely(gve_maybe_stop_tx(tx, skb))) {
-- 
2.31.1.751.gd2f1c929bd-goog