This is a note to let you know that I've just added the patch titled
net: lantiq_etop: don't free skb when returning NETDEV_TX_BUSY
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-lantiq_etop-don-t-free-skb-when-returning-netdev.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f0a004851c725f24e6039f7b98d087dcc8c22e53
Author: Zhang Changzhong <zhangchangzhong@xxxxxxxxxx>
Date: Fri Oct 21 09:32:24 2022 +0800
net: lantiq_etop: don't free skb when returning NETDEV_TX_BUSY
[ Upstream commit 9c1eaa27ec599fcc25ed4970c0b73c247d147a2b ]
The ndo_start_xmit() method must not free skb when returning
NETDEV_TX_BUSY, since caller is going to requeue freed skb.
Fixes: 504d4721ee8e ("MIPS: Lantiq: Add ethernet driver")
Signed-off-by: Zhang Changzhong <zhangchangzhong@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c
index a167fd7ee13e..1a2c1a309d22 100644
--- a/drivers/net/ethernet/lantiq_etop.c
+++ b/drivers/net/ethernet/lantiq_etop.c
@@ -488,7 +488,6 @@ ltq_etop_tx(struct sk_buff *skb, struct net_device *dev)
len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
if ((desc->ctl & (LTQ_DMA_OWN | LTQ_DMA_C)) || ch->skb[ch->dma.desc]) {
- dev_kfree_skb_any(skb);
netdev_err(dev, "tx ring full\n");
netif_tx_stop_queue(txq);
return NETDEV_TX_BUSY;
