From f18c345ad1badb12fa2b1845f188f2f6ce9407f0 Mon Sep 17 00:00:00 2001
From: jianqiang <jqwang2015@lzu.edu.cn>
Date: Thu, 28 Sep 2017 11:29:01 +0800
Subject: [PATCH] Add: tasklist_lock

---
 dump-phys.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dump-phys.c b/dump-phys.c
index 41a4f6b..60a9e88 100644
--- a/dump-phys.c
+++ b/dump-phys.c
@@ -18,9 +18,11 @@ static struct task_struct *name_task_struct(char *name)
 {
     struct task_struct *task;
 
+    read_lock(&tasklist_lock);
     for_each_process(task)
         if (!strcmp(task->comm, name))
             return task;
+    read_unlock(&tasklist_lock);
 
     return NULL;
 }