[tfaber] 67485: [NTOS:IO] - Add missing SEH around user buffer access in IopCompleteRequest - Remove a redundant condition CORE-9624

Author: tfaber
Date: Fri May  1 10:49:50 2015
New Revision: 67485

URL: http://svn.reactos.org/svn/reactos?rev=67485&view=rev
Log:
[NTOS:IO]
- Add missing SEH around user buffer access in IopCompleteRequest
- Remove a redundant condition
CORE-9624

Modified:
    trunk/reactos/ntoskrnl/io/iomgr/irp.c

Modified: trunk/reactos/ntoskrnl/io/iomgr/irp.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/iomgr/irp.c?re…
==============================================================================
--- trunk/reactos/ntoskrnl/io/iomgr/irp.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/io/iomgr/irp.c	[iso-8859-1] Fri May  1 10:49:50 2015
@@ -284,10 +284,18 @@
             (Irp->IoStatus.Status != STATUS_VERIFY_REQUIRED) &&
             !(NT_ERROR(Irp->IoStatus.Status)))
         {
-            /* Copy the buffer back to the user */
-            RtlCopyMemory(Irp->UserBuffer,
-                          Irp->AssociatedIrp.SystemBuffer,
-                          Irp->IoStatus.Information);
+            _SEH2_TRY
+            {
+                /* Copy the buffer back to the user */
+                RtlCopyMemory(Irp->UserBuffer,
+                              Irp->AssociatedIrp.SystemBuffer,
+                              Irp->IoStatus.Information);
+            }
+            _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+            {
+                /* Do nothing */
+            }
+            _SEH2_END;
         }
 
         /* Also check if we should de-allocate it */
@@ -317,10 +325,9 @@
      * (but warnings are OK!), or if it was completed with an error, but
      * did return from a pending I/O Operation and is not synchronous.
      */
-    if (!(NT_ERROR(Irp->IoStatus.Status)) ||
-         (NT_ERROR(Irp->IoStatus.Status) &&
-          (Irp->PendingReturned) &&
-          !(IsIrpSynchronous(Irp, FileObject))))
+    if (!NT_ERROR(Irp->IoStatus.Status) ||
+        (Irp->PendingReturned &&
+         !IsIrpSynchronous(Irp, FileObject)))
     {
         /* Get any information we need from the FO before we kill it */
         if ((FileObject) && (FileObject->CompletionContext))