From d91afd15b041f27d34859c79afa9e172018a86f4 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Fri, 22 Jan 2010 16:40:20 +0100 Subject: [PATCH] x86/amd-iommu: Fix possible integer overflow The variable i in this function could be increased to over 2**32 which would result in an integer overflow when using int. Fix it by changing i to unsigned long. Cc: stable@kernel.org Signed-off-by: Joerg Roedel --- arch/x86/kernel/amd_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 23824fef789c..c2ccbd7b862f 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -980,7 +980,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom, { int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT; struct amd_iommu *iommu; - int i; + unsigned long i; #ifdef CONFIG_IOMMU_STRESS populate = false; -- 2.30.2