*** old/agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java	Mon Oct 19 12:10:30 2009
--- new/agent/src/share/classes/sun/jvm/hotspot/code/CodeCache.java	Mon Oct 19 12:10:30 2009

*** 171,181 ****
--- 171,182 ----
  
      visitor.prologue(ptr, end);
      CodeBlob lastBlob = null;
      while (ptr != null && ptr.lessThan(end)) {
        try {
          CodeBlob blob = findBlobUnsafe(ptr);
+         // Use findStart to get a pointer inside blob other findBlob asserts
+         CodeBlob blob = findBlobUnsafe(heap.findStart(ptr));
          if (blob != null) {
            visitor.visit(blob);
            if (blob == lastBlob) {
              throw new InternalError("saw same blob twice");
            }