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net: xilinx: axienet: fix potential memory leak in axienet_start_xmit()

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BugLink: https://bugs.launchpad.net/bugs/2097575

[ 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: 71791dc8bd ("net: axienet: Check for DMA mapping errors")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Link: https://patch.msgid.link/20241014143704.31938-1-wanghai38@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Wang Hai
2024-10-14 22:37:04 +08:00
committed by Stefan Bader
parent c8869fb36c
commit a61efef89a
1 changed files with 2 additions and 0 deletions
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drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+2
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@@ -989,6 +989,7 @@ 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);
@@ -1009,6 +1010,7 @@ 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);