From b8e4af606a1291330ebddde58f167e60ac66299f Mon Sep 17 00:00:00 2001
From: Pierre Schweitzer <pierre@reactos.org>
Date: Sun, 26 Aug 2018 22:56:25 +0200
Subject: [PATCH] [NTOSKRNL] Properly reset pinning state on pinning failure

---
 ntoskrnl/cc/pin.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ntoskrnl/cc/pin.c b/ntoskrnl/cc/pin.c
index 3a0ee6ed9dc..65525eed83d 100644
--- a/ntoskrnl/cc/pin.c
+++ b/ntoskrnl/cc/pin.c
@@ -191,6 +191,12 @@ CcPinMappedData (
         Result = ExAcquireSharedStarveExclusive(&iBcb->Lock, BooleanFlagOn(Flags, PIN_WAIT));
     }
 
+    if (!Result)
+    {
+        iBcb->Pinned = FALSE;
+        iBcb->Vacb->PinCount--;
+    }
+
     return Result;
 }