--- a/src/share/vm/prims/jni.cpp	Tue Nov 19 17:44:26 2013 +0100
+++ b/src/share/vm/prims/jni.cpp	Wed Nov 20 00:10:38 2013 +0100
@@ -1594,10 +1594,8 @@
     }
   } else {
     m = klass->lookup_method(name, signature);
-    // Look up interfaces
-    if (m == NULL && klass->oop_is_instance()) {
-      m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
-                                                                   signature);
+    if (m == NULL &&  klass->oop_is_instance()) {
+      m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
     }
   }
   if (m == NULL || (m->is_static() != is_static)) {
@@ -3213,7 +3211,11 @@
   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
                                     env, string);
 #endif /* USDT2 */
-  jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
+  jsize ret = 0;
+  oop s = JNIHandles::resolve_non_null(string);
+  if (java_lang_String::value(s) != NULL) {
+    ret = java_lang_String::length(s);
+  }
 #ifndef USDT2
   DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
 #else /* USDT2 */
@@ -3233,20 +3235,23 @@
  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
                                   env, string, (uintptr_t *) isCopy);
 #endif /* USDT2 */
+  jchar* buf = NULL;
   oop s = JNIHandles::resolve_non_null(string);
-  int s_len = java_lang_String::length(s);
   typeArrayOop s_value = java_lang_String::value(s);
-  int s_offset = java_lang_String::offset(s);
-  jchar* buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination
-  /* JNI Specification states return NULL on OOM */
-  if (buf != NULL) {
-    if (s_len > 0) {
-      memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
-    }
-    buf[s_len] = 0;
-    //%note jni_5
-    if (isCopy != NULL) {
-      *isCopy = JNI_TRUE;
+  if (s_value != NULL) {
+    int s_len = java_lang_String::length(s);
+    int s_offset = java_lang_String::offset(s);
+    buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination
+    /* JNI Specification states return NULL on OOM */
+    if (buf != NULL) {
+      if (s_len > 0) {
+        memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
+      }
+      buf[s_len] = 0;
+      //%note jni_5
+      if (isCopy != NULL) {
+        *isCopy = JNI_TRUE;
+      }
     }
   }
 #ifndef USDT2
@@ -3316,7 +3321,11 @@
  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
                                       env, string);
 #endif /* USDT2 */
-  jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
+  jsize ret = 0;
+  oop java_string = JNIHandles::resolve_non_null(string);
+  if (java_lang_String::value(java_string) != NULL) {
+    ret = java_lang_String::utf8_length(java_string);
+  }
 #ifndef USDT2
   DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
 #else /* USDT2 */
@@ -3335,14 +3344,17 @@
  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
                                      env, string, (uintptr_t *) isCopy);
 #endif /* USDT2 */
+  char* result = NULL;
   oop java_string = JNIHandles::resolve_non_null(string);
-  size_t length = java_lang_String::utf8_length(java_string);
-  /* JNI Specification states return NULL on OOM */
-  char* result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
-  if (result != NULL) {
-    java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
-    if (isCopy != NULL) {
-      *isCopy = JNI_TRUE;
+  if (java_lang_String::value(java_string) != NULL) {
+    size_t length = java_lang_String::utf8_length(java_string);
+    /* JNI Specification states return NULL on OOM */
+    result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
+    if (result != NULL) {
+      java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
+      if (isCopy != NULL) {
+        *isCopy = JNI_TRUE;
+      }
     }
   }
 #ifndef USDT2
@@ -5050,6 +5062,8 @@
 void TestReserveMemorySpecial_test();
 void TestVirtualSpace_test();
 void TestMetaspaceAux_test();
+void TestMetachunk_test();
+void TestVirtualSpaceNode_test();
 #if INCLUDE_ALL_GCS
 void TestG1BiasedArray_test();
 #endif
@@ -5061,6 +5075,8 @@
     run_unit_test(TestReserveMemorySpecial_test());
     run_unit_test(TestVirtualSpace_test());
     run_unit_test(TestMetaspaceAux_test());
+    run_unit_test(TestMetachunk_test());
+    run_unit_test(TestVirtualSpaceNode_test());
     run_unit_test(GlobalDefinitions::test_globals());
     run_unit_test(GCTimerAllTest::all());
     run_unit_test(arrayOopDesc::test_max_array_length());