From f5396c2fb8bc1718741ab41d84328f019a82032e Mon Sep 17 00:00:00 2001
From: Johannes Anderwald <johannes.anderwald@reactos.org>
Date: Fri, 21 Aug 2009 10:30:05 +0000
Subject: [PATCH] - Don't touch the freed buffer in case of an error - Found by
 Amine Khaldi

svn path=/trunk/; revision=42821
---
 reactos/ntoskrnl/io/iomgr/deviface.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/io/iomgr/deviface.c b/reactos/ntoskrnl/io/iomgr/deviface.c
index d83124a7bbb..51b2b7ad63c 100644
--- a/reactos/ntoskrnl/io/iomgr/deviface.c
+++ b/reactos/ntoskrnl/io/iomgr/deviface.c
@@ -920,7 +920,10 @@ IoRegisterDeviceInterface(IN PDEVICE_OBJECT PhysicalDeviceObject,
         DPRINT("ZwSetValueKey() failed with status 0x%08lx\n", Status);
         ExFreePool(SymbolicLinkName->Buffer);
     }
-    SymbolicLinkName->Buffer[1] = '?';
+    else
+    {
+        SymbolicLinkName->Buffer[1] = '?';
+    }
 
     ZwClose(SubKey);
     ZwClose(InterfaceKey);