From 20586e37b22379c8991cdd4dc00e8bce5078c725 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Fri, 5 Jul 2019 13:56:57 +0000
Subject: [PATCH] Treat ReferenceCount as an atomic

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 wintun.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wintun.c b/wintun.c
index 8ec2090..698914b 100644
--- a/wintun.c
+++ b/wintun.c
@@ -1467,7 +1467,7 @@ TunWaitForReferencesToDropToZero(_In_ DEVICE_OBJECT *DeviceObject)
         MaxTries = TotalTime / SleepTime
     };
 #pragma warning(suppress : 28175)
-    for (int Try = 0; Try < MaxTries && DeviceObject->ReferenceCount; ++Try)
+    for (INT Try = 0; Try < MaxTries && InterlockedGet(&DeviceObject->ReferenceCount); ++Try)
         NdisMSleep(SleepTime);
 }