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Commit 9f21e06d authored by Wang Hai's avatar Wang Hai Committed by Harshit Mogalapalli
Browse files

be2net: fix potential memory leak in be_xmit() 



[ Upstream commit e4dd8bfe0f6a23acd305f9b892c00899089bd621 ]

The be_xmit() returns NETDEV_TX_OK without freeing skb
in case of be_xmit_enqueue() fails, add dev_kfree_skb_any() to fix it.

Fixes: 760c295e ("be2net: Support for OS2BMC.")
Signed-off-by: default avatarWang Hai <wanghai38@huawei.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Reviewed-by: default avatarKalesh AP <kalesh-anakkur.purayil@broadcom.com>
Message-ID: <20241015144802.12150-1-wanghai38@huawei.com>
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
(cherry picked from commit 94102602)
Signed-off-by: default avatarVegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: default avatarHarshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
parent db382d47

drivers/net/ethernet/emulex/benet/be_main.c

+5 −5
Original line number Diff line number Diff line
@@ -1379,10 +1379,8 @@ static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev) 
	be_get_wrb_params_from_skb(adapter, skb, &wrb_params);



	wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);

	if (unlikely(!wrb_cnt)) {

		dev_kfree_skb_any(skb);

		goto drop;

	}

	if (unlikely(!wrb_cnt))

		goto drop_skb;



	/* if os2bmc is enabled and if the pkt is destined to bmc,

	 * enqueue the pkt a 2nd time with mgmt bit set.
@@ -1391,7 +1389,7 @@ static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev) 
		BE_WRB_F_SET(wrb_params.features, OS2BMC, 1);

		wrb_cnt = be_xmit_enqueue(adapter, txo, skb, &wrb_params);

		if (unlikely(!wrb_cnt))

			goto drop;

			goto drop_skb;

		else

			skb_get(skb);

	}
@@ -1405,6 +1403,8 @@ static netdev_tx_t be_xmit(struct sk_buff *skb, struct net_device *netdev) 
		be_xmit_flush(adapter, txo);



	return NETDEV_TX_OK;

drop_skb:

	dev_kfree_skb_any(skb);

drop:

	tx_stats(txo)->tx_drv_drops++;

	/* Flush the already enqueued tx requests */