CVE-2025-71122 iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED

In the Linux kernel, the following vulnerability has been resolved: iommufd/selftest: Check for overflow in IOMMUTESTOPADDRESERVED syzkaller found it could overflow math in the test infrastructure and cause a WARNON by corrupting the reserved interval tree. This only effects test kernels with...