[PATCH 1/1] Drivers: net-next: hyperv: Fix a bug in netvsc_start_xmit()

From: K. Y. Srinivasan
Date: Sun Sep 28 2014 - 21:44:26 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>.

Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Tested-by: Long Li <longli@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
---
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:

drop:
if (ret == 0) {
- net->stats.tx_bytes += skb->len;
+ net->stats.tx_bytes += skb_length;
net->stats.tx_packets++;
} else {
kfree(packet);
--
1.7.4.1

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