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    Subject[PATCH 1/5] x86/amd-iommu: Fix possible integer overflow
    Date
    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 <joerg.roedel@amd.com>
    ---
    arch/x86/kernel/amd_iommu.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
    index 23824fe..c2ccbd7 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;
    --
    1.6.6



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