Index: /trunk/src/VBox/Runtime/r0drv/nt/thread-r0drv-nt.cpp
===================================================================
--- /trunk/src/VBox/Runtime/r0drv/nt/thread-r0drv-nt.cpp	(revision 20129)
+++ /trunk/src/VBox/Runtime/r0drv/nt/thread-r0drv-nt.cpp	(revision 20130)
@@ -151,7 +151,7 @@
 {
     /* RTThreadPreemptIsPending is only reliable of we've got both offsets and size. */
-    return offQuantumEnd    != 0
-        && cbQuantumEnd     != 0
-        && offDpcQueueDepth != 0;
+    return g_offrtNtPbQuantumEnd    != 0
+        && g_cbrtNtPbQuantumEnd     != 0
+        && g_offrtNtPbDpcQueueDepth != 0;
 }