From 523c60c5d5f7ead6045a3709797271bb6245e8d0 Mon Sep 17 00:00:00 2001
From: Hartmut Birr <osexpert@googlemail.com>
Date: Sun, 15 May 2005 13:59:57 +0000
Subject: [PATCH] Don't push an already freed irp to the list (in IoFreeIrp).

svn path=/trunk/; revision=15311
---
 reactos/ntoskrnl/io/irp.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/io/irp.c b/reactos/ntoskrnl/io/irp.c
index 5b0fbc932d7..71b748efaf4 100644
--- a/reactos/ntoskrnl/io/irp.c
+++ b/reactos/ntoskrnl/io/irp.c
@@ -1282,11 +1282,15 @@ IoFreeIrp(PIRP Irp)
                 /* All lists failed, use the pool */
                 List->L.FreeMisses++;
                 ExFreePool(Irp);
+                Irp = NULL;
             }
         }
         
         /* The free was within dhe Depth */
-        InterlockedPushEntrySList(&List->L.ListHead, (PSINGLE_LIST_ENTRY)Irp);
+        if (Irp)
+        {
+           InterlockedPushEntrySList(&List->L.ListHead, (PSINGLE_LIST_ENTRY)Irp);
+        }
     }
     
     DPRINT("Free done\n");