diff --git a/block/blk-mq-cpumap.c b/block/blk-mq-cpumap.c
index 1065d7c65fa1..15da9cc08f64 100644
--- a/block/blk-mq-cpumap.c
+++ b/block/blk-mq-cpumap.c
@@ -87,10 +87,14 @@ int blk_mq_update_queue_map(unsigned int *map, unsigned int nr_queues)
 
 unsigned int *blk_mq_make_queue_map(struct blk_mq_tag_set *set)
 {
+	unsigned int max_cpus;
 	unsigned int *map;
 
+	for_each_possible_cpu(max_cpus)
+		;
+
 	/* If cpus are offline, map them to first hctx */
-	map = kzalloc_node(sizeof(*map) * num_possible_cpus(), GFP_KERNEL,
+	map = kzalloc_node(sizeof(*map) * max_cpus, GFP_KERNEL,
 				set->numa_node);
 	if (!map)
 		return NULL;