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iommu: Fix a check in iommu_check_bind_data()
The "data->flags" variable is a u64 so if one of the high 32 bits is set the original code will allow it, but it should be rejected. The fix is to declare "mask" as a u64 instead of a u32. Fixes: d905738 ("iommu/uapi: Handle data and argsz filled by users") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20201103101623.GA1127762@mwanda Signed-off-by: Joerg Roedel <jroedel@suse.de>
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