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Pull iommufd fixes from Jason Gunthorpe: "A few minor fixes, other than the randconfig fix this is only relevant to test code, not releases: - Randconfig failure if CONFIG_DMA_SHARED_BUFFER is not set - Remove gcc warning in kselftest - Fix a refcount leak on an error path in the selftest support code - Fix missing overflow checks in the selftest support code" * tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED iommufd/selftest: Do not leak the hwpt if IOMMU_TEST_OP_MD_CHECK_MAP fails iommufd/selftest: Make it clearer to gcc that the access is not out of bounds iommufd: Fix building without dmabuf