[pschweitzer] 75474: [RDBSS] Don't attempt to dereference NULL-ptr if CCB isn't set. Fixes crash in RxFsdCommonDispatch() under rare circumstances. CORE-11327

Author: pschweitzer
Date: Thu Aug  3 20:47:41 2017
New Revision: 75474

URL: http://svn.reactos.org/svn/reactos?rev=75474&view=rev
Log:
[RDBSS]
Don't attempt to dereference NULL-ptr if CCB isn't set.
Fixes crash in RxFsdCommonDispatch() under rare circumstances.

CORE-11327

Modified:
    trunk/reactos/sdk/lib/drivers/rdbsslib/rdbss.c

Modified: trunk/reactos/sdk/lib/drivers/rdbsslib/rdbss.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/sdk/lib/drivers/rdbsslib/rd...
==============================================================================
--- trunk/reactos/sdk/lib/drivers/rdbsslib/rdbss.c	[iso-8859-1] (original)
+++ trunk/reactos/sdk/lib/drivers/rdbsslib/rdbss.c	[iso-8859-1] Thu Aug  3 20:47:41 2017
@@ -5984,7 +5984,7 @@
                 Fobx = StackFileObject->FsContext2;

if (BooleanFlagOn(Fcb->FcbState, FCB_STATE_ORPHANED) ||
-                    BooleanFlagOn(Fobx->pSrvOpen->Flags, SRVOPEN_FLAG_ORPHANED))
+                    ((Fobx != NULL) && BooleanFlagOn(Fobx->pSrvOpen->Flags, SRVOPEN_FLAG_ORPHANED)))
                 {
                     if (Closing)
                     {