diff --git a/mm/vmstat.c b/mm/vmstat.c
index 1a32130b958c418ec8a018aa676c73bb3d7cde32..db9eabb2c5b3a992a04ac2396bf791b72bbdcf94 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -41,7 +41,9 @@ static void sum_vm_events(unsigned long *ret, cpumask_t *cpumask)
 */
 void all_vm_events(unsigned long *ret)
 {
+	get_online_cpus();
 	sum_vm_events(ret, &cpu_online_map);
+	put_online_cpus();
 }
 EXPORT_SYMBOL_GPL(all_vm_events);