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Wed, 3 Jun 2026 14:27:19 -0700 From: Nicolin Chen To: Will Deacon , Jason Gunthorpe , "Kevin Tian" CC: Robin Murphy , Joerg Roedel , "Shuah Khan" , Pranjal Shrivastava , Kees Cook , Yi Liu , Eric Auger , , , , Subject: [PATCH v1 2/4] iommufd/selftest: Add invalidation entry_num and entry_len boundary tests Date: Wed, 3 Jun 2026 14:26:54 -0700 Message-ID: <9ae78ed8e64afbb2f2df27d03466380061adf7d9.1780521606.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EDD0:EE_|SJ0PR12MB8615:EE_ X-MS-Office365-Filtering-Correlation-Id: 76f94387-7810-40eb-bad2-08dec1b6ee21 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|82310400026|7416014|36860700016|56012099006|18002099003|22082099003|11063799006|6133799003; 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Assisted-by: Claude:claude-opus-4-8 Signed-off-by: Nicolin Chen --- tools/testing/selftests/iommu/iommufd.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index d1fe5dbc2813e..653aa251f8122 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -556,6 +556,21 @@ TEST_F(iommufd_ioas, alloc_hwpt_nested) 1, &num_inv); assert(!num_inv); + /* Negative test: entry_len is bounded by PAGE_SIZE */ + num_inv = 1; + test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs, + IOMMU_HWPT_INVALIDATE_DATA_SELFTEST, + PAGE_SIZE + 1, &num_inv); + assert(!num_inv); + + /* Negative test: entry_num is bounded */ +#define IOMMU_HWPT_INVALIDATE_ENTRY_NUM_MAX (1U << 19) + num_inv = IOMMU_HWPT_INVALIDATE_ENTRY_NUM_MAX + 1; + test_err_hwpt_invalidate(EINVAL, nested_hwpt_id[0], inv_reqs, + IOMMU_HWPT_INVALIDATE_DATA_SELFTEST, + sizeof(*inv_reqs), &num_inv); + assert(!num_inv); + /* Negative test: invalid flag is passed */ num_inv = 1; inv_reqs[0].flags = 0xffffffff; -- 2.43.0