From ec1a8a5a635e49080f8bfa434a9ae4de177564a9 Mon Sep 17 00:00:00 2001
From: Pierre Schweitzer <pierre@reactos.org>
Date: Fri, 3 May 2013 19:31:03 +0000
Subject: [PATCH] [NTOSKRNL] Prevent potential double free in loop. Fixes CID
 732510

svn path=/trunk/; revision=58916
---
 reactos/ntoskrnl/io/iomgr/error.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/reactos/ntoskrnl/io/iomgr/error.c b/reactos/ntoskrnl/io/iomgr/error.c
index 07197ff39b4..0c7c14ec926 100644
--- a/reactos/ntoskrnl/io/iomgr/error.c
+++ b/reactos/ntoskrnl/io/iomgr/error.c
@@ -367,7 +367,11 @@ IopLogWorker(IN PVOID Parameter)
         DeviceNameLength += sizeof(WCHAR);
 
         /* Free the buffer if we had one */
-        if (PoolObjectNameInfo) ExFreePool(PoolObjectNameInfo);
+        if (PoolObjectNameInfo)
+        {
+            ExFreePool(PoolObjectNameInfo);
+            PoolObjectNameInfo = NULL;
+        }
 
         /* Go to the next string buffer position */
         ErrorMessage->EntryData.NumberOfStrings++;
@@ -428,7 +432,7 @@ IopLogWorker(IN PVOID Parameter)
             break;
         }
 
-        /* Derefernece the device object */
+        /* Dereference the device object */
         if (LogEntry->DeviceObject) ObDereferenceObject(LogEntry->DeviceObject);
         if (DriverObject) ObDereferenceObject(LogEntry->DriverObject);