Index: /trunk/src/VBox/VMM/VMMR0/GMMR0.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMR0/GMMR0.cpp	(revision 37803)
+++ /trunk/src/VBox/VMM/VMMR0/GMMR0.cpp	(revision 37804)
@@ -2543,4 +2543,7 @@
             else
                 AssertMsgFailed(("idPage=%#x\n", idPage));
+            paPages[iPage].idPage       = NIL_GMM_PAGEID;
+            paPages[iPage].idSharedPage = NIL_GMM_PAGEID;
+            paPages[iPage].HCPhysGCPhys = NIL_RTHCPHYS;
         }