It uses [offset, offset + size - 1] to indicate that the length of range is size in most places in vfio trace code (such as trace_vfio_region_region_mmap()) execpt trace_vfio_region_sparse_mmap_entry(). So change it for trace_vfio_region_sparse_mmap_entry(), but if size is zero, the trace will be weird with an underflow, so move the trace and trace it only if size is not zero. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Link: https://lore.kernel.org/r/1650100104-130737-1-git-send-email-chenxiang66@hisilicon.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>