From: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Date: Thu, 3 Mar 2016 21:22:36 +0000 (-0600)
Subject: ibmveth: check return of skb_linearize in ibmveth_start_xmit
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2c42bf4b43170ee83354bb68a12f8fc84c2e27a9;p=linux-beck.git

ibmveth: check return of skb_linearize in ibmveth_start_xmit

If skb_linearize fails, the driver should drop the packet
instead of trying to copy it into the bounce buffer.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c
index 335417b4756b..ebe60719e489 100644
--- a/drivers/net/ethernet/ibm/ibmveth.c
+++ b/drivers/net/ethernet/ibm/ibmveth.c
@@ -1166,7 +1166,10 @@ map_failed:
 	if (!firmware_has_feature(FW_FEATURE_CMO))
 		netdev_err(netdev, "tx: unable to map xmit buffer\n");
 	adapter->tx_map_failed++;
-	skb_linearize(skb);
+	if (skb_linearize(skb)) {
+		netdev->stats.tx_dropped++;
+		goto out;
+	}
 	force_bounce = 1;
 	goto retry_bounce;
 }