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net: ethernet: aeroflex: fix potential memory leak in greth_start_xmit_gbit()

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[ Upstream commit cf57b5d7a2 ]

The greth_start_xmit_gbit() returns NETDEV_TX_OK without freeing skb
in case of skb->len being too long, add dev_kfree_skb() to fix it.

Fixes: d4c41139df ("net: Add Aeroflex Gaisler 10/100/1G Ethernet MAC driver")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Link: https://patch.msgid.link/20241012110434.49265-1-wanghai38@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wang Hai 2024-10-12 19:04:34 +08:00 committed by Greg Kroah-Hartman
parent 681ce79ab6
commit 79571c4d2f
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/aeroflex/greth.c
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@ -484,7 +484,7 @@ greth_start_xmit_gbit(struct sk_buff *skb, struct net_device *dev)
if (unlikely(skb->len > MAX_FRAME_SIZE)) { if (unlikely(skb->len > MAX_FRAME_SIZE)) {
dev->stats.tx_errors++; dev->stats.tx_errors++;
goto out; goto len_error;
} }
/* Save skb pointer. */ /* Save skb pointer. */
@ -575,6 +575,7 @@ frag_map_error:
map_error: map_error:
if (net_ratelimit()) if (net_ratelimit())
dev_warn(greth->dev, "Could not create TX DMA mapping\n"); dev_warn(greth->dev, "Could not create TX DMA mapping\n");
len_error:
dev_kfree_skb(skb); dev_kfree_skb(skb);
out: out:
return err; return err;