diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 01637677736f..dff067bd56b1 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -678,6 +678,11 @@ static struct io_tlb_pool *swiotlb_alloc_pool(struct device *dev,
 	size_t pool_size;
 	size_t tlb_size;
 
+	if (nslabs > SLABS_PER_PAGE << MAX_ORDER) {
+		nslabs = SLABS_PER_PAGE << MAX_ORDER;
+		nareas = limit_nareas(nareas, nslabs);
+	}
+
 	pool_size = sizeof(*pool) + array_size(sizeof(*pool->areas), nareas);
 	pool = kzalloc(pool_size, gfp);
 	if (!pool)