sunvnet: fix potential NULL pointer dereference

One of the error cases for vnet_start_xmit()'s "out_dropped" label
is port == NULL, so only mess with port->clean_timer when port is not NULL.

Signed-off-by: David L Stevens <david.stevens@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
index 1262697..1539672 100644 (file)
--- a/drivers/net/ethernet/sun/sunvnet.c
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -1073,7 +1073,7 @@ out_dropped:
        if (pending)
                (void)mod_timer(&port->clean_timer,
                                jiffies + VNET_CLEAN_TIMEOUT);
-       else
+       else if (port)
                del_timer(&port->clean_timer);
        dev->stats.tx_dropped++;
        return NETDEV_TX_OK;