1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index c27447653903..e315dfe3af1b 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -2027,6 +2027,13 @@ static bool arm_setup_iommu_dma_ops(struct device *dev, u64 dma_base, u64 size,
         if (!iommu)
                 return false;
 
+        /*
+         * currently arm_iommu_create_mapping() takes a max of size_t
+         * for size param. So check this limit for now.
+         */
+        if (size > SIZE_MAX)
+                return false;
+
         mapping = arm_iommu_create_mapping(dev->bus, dma_base, size);
         if (IS_ERR(mapping)) {
                 pr_warn("Failed to create %llu-byte IOMMU mapping for device %s\n",