From 414b4db8acc16a72c7e9a28a1bc558af3986a5c3 Mon Sep 17 00:00:00 2001
From: Aleksey Bragin <aleksey@reactos.org>
Date: Tue, 9 Oct 2007 17:00:11 +0000
Subject: [PATCH] Mike Nordell <tamlin> - Add two checks for infinite loops.
 The latter gets triggered in some cases, a memory overwrite is suspected, or
 a race condition.

svn path=/trunk/; revision=29471
---
 reactos/ntoskrnl/cm/registry.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/reactos/ntoskrnl/cm/registry.c b/reactos/ntoskrnl/cm/registry.c
index 6375f1417ce..5ef47f0c604 100644
--- a/reactos/ntoskrnl/cm/registry.c
+++ b/reactos/ntoskrnl/cm/registry.c
@@ -97,11 +97,21 @@ CmiWorkerThread(PVOID Param)
                     !(CurrentKey->Flags & KO_MARKED_FOR_DELETE))
                 {
                     ObDereferenceObject(CurrentKey);
+                    if (CurrentEntry == CmiKeyObjectListHead.Blink)
+                    {
+                        DPRINT("Registry loop detected! Crashing\n");
+                        KEBUGCHECK(0);
+                    }
                     CurrentEntry = CmiKeyObjectListHead.Blink;
                     Count++;
                 }
                 else
                 {
+                    if (CurrentEntry == CurrentEntry->Blink)
+                    {
+                        DPRINT("Registry loop detected! Crashing\n");
+                        KEBUGCHECK(0);
+                    }
                     CurrentEntry = CurrentEntry->Blink;
                 }
             }