diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index b739be2..c9fefdb 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -1081,7 +1081,8 @@
 	 */
 	for_each_possible_cpu(i) {
 		start = (unsigned long) &__per_cpu_start + per_cpu_offset(i);
-		end   = (unsigned long) &__per_cpu_end   + per_cpu_offset(i);
+		end   = (unsigned long) &__per_cpu_start + PERCPU_ENOUGH_ROOM
+					+ per_cpu_offset(i);
 
 		if ((addr >= start) && (addr < end))
 			return 1;