6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wang Hai <wanghai38@xxxxxxxxxx>
[ Upstream commit 99714e37e8333bbc22496fe80f241d5b35380e83 ]
The axienet_start_xmit() returns NETDEV_TX_OK without freeing skb
in case of dma_map_single() fails, add dev_kfree_skb_any() to fix it.
Fixes: 71791dc8bdea ("net: axienet: Check for DMA mapping errors")
Signed-off-by: Wang Hai <wanghai38@xxxxxxxxxx>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxx>
Link: https://patch.msgid.link/20241014143704.31938-1-wanghai38@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 62c10eb4f0adf..9f779653ed622 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -845,6 +845,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
if (net_ratelimit())
netdev_err(ndev, "TX DMA mapping error\n");
ndev->stats.tx_dropped++;
+ dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
desc_set_phys_addr(lp, phys, cur_p);
@@ -865,6 +866,7 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
ndev->stats.tx_dropped++;
axienet_free_tx_chain(lp, orig_tail_ptr, ii + 1,
true, NULL, 0);
+ dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
desc_set_phys_addr(lp, phys, cur_p);
--
2.43.0
