3.13.11.11 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: KY Srinivasan <[email protected]>

[ Upstream commit dedb845ded56ded1c62f5398a94ffa8615d4592d ]

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 <[email protected]>.

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 <[email protected]>
Tested-by: Long Li <[email protected]>
Tested-by: Sitsofe Wheeler <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Kamal Mostafa <[email protected]>
---
 drivers/net/hyperv/netvsc_drv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 6ea06a8..f4aef42 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -147,6 +147,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct 
net_device *net)
        struct hv_netvsc_packet *packet;
        int ret;
        unsigned int i, num_pages, npg_data;
+       u32 skb_length = skb->len;
 
        /* Add multipages for skb->data and additional 2 for RNDIS */
        npg_data = (((unsigned long)skb->data + skb_headlen(skb) - 1)
@@ -217,7 +218,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct 
net_device *net)
        ret = rndis_filter_send(net_device_ctx->device_ctx,
                                  packet);
        if (ret == 0) {
-               net->stats.tx_bytes += skb->len;
+               net->stats.tx_bytes += skb_length;
                net->stats.tx_packets++;
        } else {
                kfree(packet);
-- 
1.9.1

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