diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index 162464fe86bf7634fb9ac6c21ecd76e25beb10b6..9785a3ac02b3c4057887b047c1e4c708c6e9fdfe 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -47,7 +47,7 @@
 #define MAX_CALLID 65535
 
 static DECLARE_BITMAP(callid_bitmap, MAX_CALLID + 1);
-static struct pppox_sock **callid_sock;
+static struct pppox_sock __rcu **callid_sock;
 
 static DEFINE_SPINLOCK(chan_lock);