[PATCH net 1/1 V2] hyperv: Fix a bug in netvsc_start_xmit()

From: K. Y. Srinivasan
Date: Mon Sep 29 2014 - 00:17:52 EST

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@xxxxxxxxxxxxx>.

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@xxxxxxxxxxxxx>
Tested-by: Long Li <longli@xxxxxxxxxxxxx>
drivers/net/hyperv/netvsc_drv.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index a9c5eaa..0fcb5e7 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -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:

if (ret == 0) {
- net->stats.tx_bytes += skb->len;
+ net->stats.tx_bytes += skb_length;
} else {

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