diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index a79ccf9..8020fb2 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -68,7 +68,6 @@
 extern int core_uses_pid;
 extern int suid_dumpable;
 extern char core_pattern[];
-extern int cad_pid;
 extern int pid_max;
 extern int min_free_kbytes;
 extern int printk_ratelimit_jiffies;
@@ -137,6 +136,9 @@
 static int proc_do_uts_string(ctl_table *table, int write, struct file *filp,
 		  void __user *buffer, size_t *lenp, loff_t *ppos);
 
+static int proc_do_cad_pid(ctl_table *table, int write, struct file *filp,
+		  void __user *buffer, size_t *lenp, loff_t *ppos);
+
 static ctl_table root_table[];
 static struct ctl_table_header root_table_header =
 	{ root_table, LIST_HEAD_INIT(root_table_header.ctl_entry) };
@@ -543,10 +545,10 @@
 	{
 		.ctl_name	= KERN_CADPID,
 		.procname	= "cad_pid",
-		.data		= &cad_pid,
+		.data		= NULL,
 		.maxlen		= sizeof (int),
 		.mode		= 0600,
-		.proc_handler	= &proc_dointvec,
+		.proc_handler	= &proc_do_cad_pid,
 	},
 	{
 		.ctl_name	= KERN_MAX_THREADS,
@@ -2427,6 +2429,28 @@
 }
 #endif
 
+static int proc_do_cad_pid(ctl_table *table, int write, struct file *filp,
+			   void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+	struct pid *new_pid;
+	pid_t tmp;
+	int r;
+
+	tmp = pid_nr(cad_pid);
+
+	r = __do_proc_dointvec(&tmp, table, write, filp, buffer,
+			       lenp, ppos, NULL, NULL);
+	if (r || !write)
+		return r;
+
+	new_pid = find_get_pid(tmp);
+	if (!new_pid)
+		return -ESRCH;
+
+	put_pid(xchg(&cad_pid, new_pid));
+	return 0;
+}
+
 #else /* CONFIG_PROC_FS */
 
 int proc_dostring(ctl_table *table, int write, struct file *filp,