linux-kernel - [PATCHv3 4/6] tun: orphan frags on xmit

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Date:	Fri, 20 Jul 2012 22:23:14 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Jason Wang <jasowang@...hat.com>, eric.dumazet@...il.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	ebiederm@...ssion.com, davem@...emloft.net
Subject: [PATCHv3 4/6] tun: orphan frags on xmit

tun xmit is actually receive of the internal tun
socket. Orphan the frags same as we do for normal rx path.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 drivers/net/tun.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index f3a454c..b95a7f4 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -416,6 +416,8 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	/* Orphan the skb - required as we might hang on to it
 	 * for indefinite time. */
+	if (unlikely(skb_orphan_frags(skb, GFP_ATOMIC)))
+		goto drop;
 	skb_orphan(skb);
 
 	/* Enqueue packet */
-- 
MST

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