From 70f5e638d6f85a87b6bdeb90585f81b4616d31ef Mon Sep 17 00:00:00 2001
From: Prasad J Pandit <address@hidden>
Date: Wed, 2 Dec 2015 17:28:06 +0530
Subject: net: vmxnet3: avoid multiple activations of device

Vmxnet3 device emulator does not check if the device is active
before activating it, resulting in memory leakage on the host.
Added a check to verify device state and avoid memory leakage.

Reported-by: Qinghao Tang <address@hidden>
Signed-off-by: Prasad J Pandit <address@hidden>
---
 hw/net/vmxnet3.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
index 071feeb..7b727b3 100644
--- a/hw/net/vmxnet3.c
+++ b/hw/net/vmxnet3.c
@@ -1425,6 +1425,12 @@ static void vmxnet3_activate_device(VMXNET3State *s)
         return;
     }
 
+    /* Verify if device is active */
+    if (s->device_active) {
+        VMW_CFPRN("Vmxnet3 device is active");
+        return;
+    }
+
     vmxnet3_adjust_by_guest_type(s);
     vmxnet3_update_features(s);
     vmxnet3_update_pm_state(s);
-- 
2.4.3