From: Rafał Miłecki Date: Wed, 24 Feb 2021 15:18:41 +0000 (+0100) Subject: net: broadcom: bcm4908_enet: fix RX path possible mem leak X-Git-Tag: v5.15~1635^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4dc7f09b8becfa35a55430a49d95acf19f996e6b;p=platform%2Fkernel%2Flinux-starfive.git net: broadcom: bcm4908_enet: fix RX path possible mem leak 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 --- diff --git a/drivers/net/ethernet/broadcom/bcm4908_enet.c b/drivers/net/ethernet/broadcom/bcm4908_enet.c index 9be33dc..7983c7a 100644 --- 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_struct *napi, int weight) 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; }