*** old/src/share/vm/runtime/dtraceJSDT.cpp	Mon Apr 27 14:09:31 2009
--- new/src/share/vm/runtime/dtraceJSDT.cpp	Mon Apr 27 14:09:31 2009

*** 58,67 ****
--- 58,72 ----
        assert(probe->name != NULL, "valid probe name");
        assert(probe->function != NULL, "valid probe function spec");
        methodHandle h_method =
          methodHandle(THREAD, JNIHandles::resolve_jmethod_id(probe->method));
        nmethod* nm = AdapterHandlerLibrary::create_dtrace_nmethod(h_method);
+       if (nm == NULL) {
+         delete probes;
+         THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
+           "Unable to register DTrace probes (CodeCache: no room for DTrace nmethods).");
+       }
        h_method()->set_not_compilable(CompLevel_highest_tier);
        h_method()->set_code(h_method, nm);
        probes->nmethod_at_put(count++, nm);
      }
    }