C语言双向循环链表删除节点问题 400 请求报错 

如下链表放在结构体里面，我用下面的方法删除节点会出错，请问怎么释放节点：

//Á´±íÉêÃ÷
typedef struct _list_head{
struct _list_head *prev;
struct _list_head *next;
}list_head,*Plist_head;

//½á¹¹ÌåÉêÃ÷
typedef struct _MyStruct{
int age;
list_head list;
}mystruct;

//ɾ³ý½Úµã
Plist_head DeleteNode(Plist_head head,int data)
{
		mystruct *ms=NULL;
		Plist_head dNode=FindNode(head,data);
		Plist_head bNode=head;

		if(dNode==head)
			bNode=head->next;//µ±É¾³ýÍ·½áµãʱ£¬°ÑÍ·µÄºó¼Ìµ±±íÍ·¡£
		if(dNode)
		{
			dNode->prev->next=dNode->next; 
			dNode->next->prev=dNode->prev;
			ms=GetAddr(mystruct,dNode,list);

			free(ms);//ÕâÀïÓÐÎÊÌ⣬²»ÖªµÀÔõôÊͷŸýڵãÒÔ¼°°üº¬¸Ã½ÚµãµÄ½á¹¹Ìå¡£
			//free(dNode);
		}		
		else
			return NULL;
		return bNode;
}

其中：

//¸ù¾Ý½á¹¹Ìå³ÉÔ±µÄµØÖ·ÕÒµ½½á¹¹ÌåµÄÆðʼµØÖ·
#define GetAddr(type,addr,member) \
((type *)((char *)addr-(unsigned long *)(&((type *)0)->member)))