1 files changed, 5 insertions, 0 deletions
diff --git a/datapath-windows/ovsext/Event.c b/datapath-windows/ovsext/Event.c
index 656f71986..d38bc7052 100644
--- a/datapath-windows/ovsext/Event.c
+++ b/datapath-windows/ovsext/Event.c
@@ -469,6 +469,11 @@ OvsWaitEventIoctl(PIRP irp,
     }
 
     queue = (POVS_EVENT_QUEUE)instance->eventQueue;
+    if (queue == NULL) {
+        OvsReleaseEventQueueLock();
+        OVS_LOG_TRACE("Exit: Event queue does not exist");
+        return STATUS_INVALID_PARAMETER;
+    }
     if (queue->pendingIrp) {
         OvsReleaseEventQueueLock();
         OVS_LOG_TRACE("Exit: Event queue already in pending state");