Index: ntoskrnl/io/iomgr/driver.c
===================================================================
--- ntoskrnl/io/iomgr/driver.c	(revision 71056)
+++ ntoskrnl/io/iomgr/driver.c	(working copy)
@@ -897,7 +897,9 @@
     /*
      * Strip the file extension from ServiceName
      */
-    RtlCreateUnicodeString(&ServiceName, FileNameWithoutPath);
+    if (!RtlCreateUnicodeString(&ServiceName, FileNameWithoutPath))
+        return STATUS_NO_MEMORY;
+
     FileExtension = wcsrchr(ServiceName.Buffer, '.');
     if (FileExtension != NULL)
     {