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hyperv: Fix a bug in netvsc_start_xmit() 

After the packet is successfully sent, we should not touch the skb
as it may have been freed. This patch is based on the work done by
Long Li <longli@microsoft.com>.

In this version of the patch I have fixed issues pointed out by David.
David, please queue this up for stable.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Tested-by: Long Li <longli@microsoft.com>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
KY Srinivasan 2014-09-28 22:16:43 -07:00 committed by David S. Miller
parent c5bb86c384
commit dedb845ded
1 changed files with 2 additions and 1 deletions
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3
drivers/net/hyperv/netvsc_drv.c
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@ -387,6 +387,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
int hdr_offset;
u32 net_trans_info;
u32 hash;
u32 skb_length = skb->len;
/* We will atmost need two pages to describe the rndis
@ -562,7 +563,7 @@ do_send:
drop:
if (ret == 0) {
net->stats.tx_bytes += skb->len;
net->stats.tx_bytes += skb_length;
net->stats.tx_packets++;
} else {
kfree(packet);