From 4dc7f09b8becfa35a55430a49d95acf19f996e6b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 24 Feb 2021 16:18:41 +0100 Subject: [PATCH] net: broadcom: bcm4908_enet: fix RX path possible mem leak MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit After filling RX ring slot with new skb it's required to free old skb. Immediately on error or later in the net subsystem. Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver") Signed-off-by: Rafał Miłecki Acked-by: Florian Fainelli Link: https://lore.kernel.org/r/20210224151842.2419-1-zajec5@gmail.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/broadcom/bcm4908_enet.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/ethernet/broadcom/bcm4908_enet.c +++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c @@ -570,6 +570,7 @@ static int bcm4908_enet_poll(struct napi if (len < ETH_ZLEN || (ctl & (DMA_CTL_STATUS_SOP | DMA_CTL_STATUS_EOP)) != (DMA_CTL_STATUS_SOP | DMA_CTL_STATUS_EOP)) { + kfree_skb(slot.skb); enet->netdev->stats.rx_dropped++; break; }