netdev - [PATCH] e1000e: Do not allow requeue of freed skb

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Message-ID: <20070921164115.31055.49849.stgit@localhost.localdomain>
Date:	Fri, 21 Sep 2007 09:41:15 -0700
From:	Auke Kok <auke-jan.h.kok@...el.com>
To:	jeff@...zik.org, davem@...emloft.net
Cc:	hadi@...erus.ca, krkumar2@...ibm.com, netdev@...r.kernel.org
Subject: [PATCH] e1000e: Do not allow requeue of freed skb

From: Krishna Kumar <krkumar2@...ibm.com>

Returning BUSY will make qdisc_restart enqueue the skb which was already
freed. The bad skb was correctly freed and we should return NETDEV_TX_OK.

First spotted by Jeff Garzik on 08/13/07.

Signed-off-by: Krishna Kumar <krkumar2@...ibm.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@...el.com>
---

 drivers/net/e1000e/netdev.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 372da46..03f7472 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -3537,7 +3537,7 @@ static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 		/* handle pci_map_single() error in e1000_tx_map */
 		dev_kfree_skb_any(skb);
 		spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags);
-		return NETDEV_TX_BUSY;
+		return NETDEV_TX_OK;
 	}
 
 	e1000_tx_queue(adapter, tx_flags, count);
-
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