From 466fa406a1145dec09b587e282447f2fdcb61ae6 Mon Sep 17 00:00:00 2001
From: hengyunabc <hengyunabc@gmail.com>
Date: Mon, 2 Dec 2019 20:19:09 +0800
Subject: [PATCH] fix profiler execute make jvm crash problem. close #962

---
 .../arthas/core/command/monitor200/ProfilerCommand.java      | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/src/main/java/com/taobao/arthas/core/command/monitor200/ProfilerCommand.java b/core/src/main/java/com/taobao/arthas/core/command/monitor200/ProfilerCommand.java
index 60aa4e0d..fd14bb5a 100644
--- a/core/src/main/java/com/taobao/arthas/core/command/monitor200/ProfilerCommand.java
+++ b/core/src/main/java/com/taobao/arthas/core/command/monitor200/ProfilerCommand.java
@@ -266,6 +266,11 @@ public class ProfilerCommand extends AnnotatedCommand {
             AsyncProfiler asyncProfiler = this.profilerInstance();
 
             if (ProfilerAction.execute.equals(profilerAction)) {
+                if (actionArg == null) {
+                    process.write("actionArg can not be empty.\n");
+                    status = 1;
+                    return;
+                }
                 String result = execute(asyncProfiler, this.actionArg);
                 process.write(result);
             } else if (ProfilerAction.start.equals(profilerAction)) {