--- old/src/share/vm/prims/jvmtiEnv.cpp	Tue Feb 25 06:03:07 2014
+++ new/src/share/vm/prims/jvmtiEnv.cpp	Tue Feb 25 06:03:06 2014
@@ -1464,7 +1464,19 @@
     // It's fine to update the thread state here because no JVMTI events
     // shall be posted for this PopFrame.
 
-    state->update_for_pop_top_frame();
+    // It is only safe to perform the direct operation on the current
+    // thread. All other usage needs to use a vm-safepoint-op for safety.
+    if (java_thread == JavaThread::current()) {
+      state->update_for_pop_top_frame();
+    } else {
+      VM_UpdateForPopTopFrame op(state);
+      VMThread::execute(&op);
+      jvmtiError err = op.result();
+      if (err != JVMTI_ERROR_NONE) {
+        return err;
+      }
+    }
+
     java_thread->set_popframe_condition(JavaThread::popframe_pending_bit);
     // Set pending step flag for this popframe and it is cleared when next
     // step event is posted.