diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 2b0c8fd9658e..82c767374c70 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -533,7 +533,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev,
 not_found:
 	spin_unlock_irqrestore(&io_tlb_lock, flags);
 	if (!(attrs & DMA_ATTR_NO_WARN) && printk_ratelimit())
-		dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes)\n", size);
+		dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes), total %lu, used %lu\n",
+			 size, io_tlb_nslabs, io_tlb_used);
 	return DMA_MAPPING_ERROR;
 found:
 	io_tlb_used += nslots;