diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 3e8809c18188060f09581243d3d17bc0c11b09cb..74268996104aa7d10a711163f8c9f0d7281d54a2 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2479,9 +2479,11 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
 {
 	const gfp_t nested_gfp = (gfp_mask & GFP_RECLAIM_MASK) | __GFP_ZERO;
 	unsigned int nr_pages = get_vm_area_size(area) >> PAGE_SHIFT;
-	unsigned int array_size = nr_pages * sizeof(struct page *), i;
+	unsigned long array_size;
+	unsigned int i;
 	struct page **pages;
 
+	array_size = (unsigned long)nr_pages * sizeof(struct page *);
 	gfp_mask |= __GFP_NOWARN;
 	if (!(gfp_mask & (GFP_DMA | GFP_DMA32)))
 		gfp_mask |= __GFP_HIGHMEM;