Index: /trunk/src/VBox/VMM/VMMAll/PGMAllHandler.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/PGMAllHandler.cpp	(revision 64322)
+++ /trunk/src/VBox/VMM/VMMAll/PGMAllHandler.cpp	(revision 64323)
@@ -243,6 +243,5 @@
     PPGMRAMRANGE pRam = pgmPhysGetRange(pVM, GCPhys);
     if (   !pRam
-        || GCPhysLast < pRam->GCPhys
-        || GCPhys > pRam->GCPhysLast)
+        || GCPhysLast > pRam->GCPhysLast)
     {
 #ifdef IN_RING3
@@ -252,4 +251,6 @@
         return VERR_PGM_HANDLER_PHYSICAL_NO_RAM_RANGE;
     }
+    Assert(GCPhys >= pRam->GCPhys && GCPhys < pRam->GCPhysLast);
+    Assert(GCPhysLast <= pRam->GCPhysLast && GCPhysLast >= pRam->GCPhys);
 
     /*