[tfaber] 74013: [NTOS:IO] - Avoid event leak in NtQueryInformationFile. CID 716584

Author: tfaber
Date: Wed Mar  1 13:10:52 2017
New Revision: 74013

URL: http://svn.reactos.org/svn/reactos?rev=74013&view=rev
Log:
[NTOS:IO]
- Avoid event leak in NtQueryInformationFile. CID 716584

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

Modified: trunk/reactos/ntoskrnl/io/iomgr/iofunc.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/iomgr/iofunc.c…
==============================================================================
--- trunk/reactos/ntoskrnl/io/iomgr/iofunc.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/io/iomgr/iofunc.c	[iso-8859-1] Wed Mar  1 13:10:52 2017
@@ -2240,8 +2240,17 @@
             }
             _SEH2_END;
 
-            /* Unlock FO */
-            IopUnlockFileObject(FileObject);
+            /* Free the event if we had one */
+            if (LocalEvent)
+            {
+                ExFreePoolWithTag(Event, TAG_IO);
+            }
+
+            /* If FO was locked, unlock it */
+            if (FileObject->Flags & FO_SYNCHRONOUS_IO)
+            {
+                IopUnlockFileObject(FileObject);
+            }
 
             /* We're done with FastIO! */
             ObDereferenceObject(FileObject);