From bc0269a715a78be7a4edb2a347a818aa4658353f Mon Sep 17 00:00:00 2001
From: Aleksey Bragin <aleksey@reactos.org>
Date: Fri, 7 Mar 2008 17:13:02 +0000
Subject: [PATCH] - UGLY HACK dedicated to Timo Kreuzer: Please, fix this
 issue. Happens only in 2nd stage during shutdown.

svn path=/trunk/; revision=32603
---
 reactos/subsystems/win32/win32k/objects/gdiobj.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/reactos/subsystems/win32/win32k/objects/gdiobj.c b/reactos/subsystems/win32/win32k/objects/gdiobj.c
index b54a954240b..06bb44109e9 100644
--- a/reactos/subsystems/win32/win32k/objects/gdiobj.c
+++ b/reactos/subsystems/win32/win32k/objects/gdiobj.c
@@ -1318,6 +1318,16 @@ LockHandle:
             {
                 POBJ Object = Entry->KernelData;
 
+                /* HACK: Introduced very recently, probably by Timo's changes */
+                if ((ULONG_PTR)Object < 0x80000000)
+                {
+                    DPRINT1("KernelData is invalid (%p) for Entry %p!!!\n",
+                        Object, Entry);
+
+                    /* Hopefully someone is going to solve this issue */
+                    return;
+                }
+
                 PrevThread = Object->Tid;
                 if (Object->cExclusiveLock == 0 || PrevThread == Thread)
                 {