From 777d2bbd46f00594a88f546fe270232c8962d5e7 Mon Sep 17 00:00:00 2001
From: Eitan Eliahu <eliahue@vmware.com>
Date: Fri, 24 Oct 2014 17:46:39 -0700
Subject: datapath-windows:Remove user mode instance from pid hash on process
 termination

The instance should be removed from pid-hash when vswitchd.exe terminates so
the driver won't access it during packet miss (causing BSOD)

Signed-off-by: Eitan Eliahu <eliahue@vmware.com>
Acked-by: Sorin Vinturis <svinturis@cloudbasesolutions.com>
Acked-by: Nithin Raju <nithin@vmware.com>
Acked-by: Alin Gabriel Serdean <aserdean@cloudbasesolutions.com>
Tested-by: Alin Gabriel Serdean <aserdean@cloudbasesolutions.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
---
 datapath-windows/ovsext/User.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'datapath-windows/ovsext/User.c')

diff --git a/datapath-windows/ovsext/User.c b/datapath-windows/ovsext/User.c
index 501dc12c4..fc27f7d54 100644
--- a/datapath-windows/ovsext/User.c
+++ b/datapath-windows/ovsext/User.c
@@ -98,6 +98,7 @@ OvsCleanupPacketQueue(POVS_OPEN_INSTANCE instance)
     LIST_ENTRY tmp;
     PIRP irp = NULL;
 
+    ASSERT(instance);
     InitializeListHead(&tmp);
     queue = (POVS_USER_PACKET_QUEUE)instance->packetQueue;
     if (queue) {
@@ -139,6 +140,11 @@ OvsCleanupPacketQueue(POVS_OPEN_INSTANCE instance)
     if (queue) {
         OvsFreeMemory(queue);
     }
+
+    /* Remove the instance from pidHashArray */
+    OvsAcquirePidHashLock();
+    OvsDelPidInstance(gOvsSwitchContext, instance->pid);
+    OvsReleasePidHashLock();
 }
 
 NTSTATUS
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