5.15-stable review patch. If anyone has any objections, please let me know.
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From: Alexey Kodanev aleksei.kodanev@bell-sw.com
[ Upstream commit f5bce28f6b9125502abec4a67d68eabcd24b3b17 ]
Currently, when skb is null, the driver prints an error and then dereferences skb on the next line.
To fix this, let's add a 'break' after the error message to switch to sxgbe_rx_refill(), which is similar to the approach taken by the other drivers in this particular case, e.g. calxeda with xgmac_rx().
Found during a code review.
Fixes: 1edb9ca69e8a ("net: sxgbe: add basic framework for Samsung 10Gb ethernet driver") Signed-off-by: Alexey Kodanev aleksei.kodanev@bell-sw.com Reviewed-by: Simon Horman horms@kernel.org Link: https://patch.msgid.link/20251121123834.97748-1-aleksei.kodanev@bell-sw.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c index 1b415fe6f9b9f..1fe687b594f9d 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c @@ -1518,8 +1518,10 @@ static int sxgbe_rx(struct sxgbe_priv_data *priv, int limit)
skb = priv->rxq[qnum]->rx_skbuff[entry];
- if (unlikely(!skb)) + if (unlikely(!skb)) { netdev_err(priv->dev, "rx descriptor is not consistent\n"); + break; + }
prefetch(skb->data - NET_IP_ALIGN); priv->rxq[qnum]->rx_skbuff[entry] = NULL;