diff -r 64bdec4e6c03 -r 020570e15cfa src/mem/cache/base.cc
--- a/src/mem/cache/base.cc	Thu Mar 14 14:07:56 2013 +0000
+++ b/src/mem/cache/base.cc	Thu Mar 14 14:09:53 2013 +0000
@@ -88,6 +88,13 @@
     assert(!blocked);
     DPRINTF(CachePort, "Cache port %s blocking new requests\n", name());
     blocked = true;
+    // if we already scheduled a retry in this cycle, but it has not yet
+    // happened, cancel it
+    if (sendRetryEvent.scheduled()) {
+       owner.deschedule(sendRetryEvent);
+       DPRINTF(CachePort, "Cache port %s deschedule retry\n", name());
+       mustSendRetry = true;
+    }
 }
 
 void