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| author | Jason Gunthorpe <jgg@nvidia.com> | 2023-03-31 12:32:27 -0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-04-04 13:11:24 -0300 |
| commit | 62e37c86bf0718e1ec0156c7a88a43ced6cdf201 (patch) | |
| tree | 547cc5f2b8c4254c3d55f77fe0955226d21137cf /tools | |
| parent | 692d42d411b7db6a76382537fccbee3a12a2bcdb (diff) | |
| download | linux-stable-62e37c86bf0718e1ec0156c7a88a43ced6cdf201.tar.gz linux-stable-62e37c86bf0718e1ec0156c7a88a43ced6cdf201.tar.bz2 linux-stable-62e37c86bf0718e1ec0156c7a88a43ced6cdf201.zip | |
iommufd/selftest: Cover domain unmap with huge pages and access
Inspired by the syzkaller reproducer check the batch carry path with a
simple test.
Link: https://lore.kernel.org/r/4-v1-ceab6a4d7d7a+94-iommufd_syz_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/iommu/iommufd.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index da0443ba1683..e4a6b33cfde4 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -594,6 +594,40 @@ TEST_F(iommufd_ioas, iova_ranges) EXPECT_EQ(0, ranges[1].last); } +TEST_F(iommufd_ioas, access_domain_destory) +{ + struct iommu_test_cmd access_cmd = { + .size = sizeof(access_cmd), + .op = IOMMU_TEST_OP_ACCESS_PAGES, + .access_pages = { .iova = self->base_iova + PAGE_SIZE, + .length = PAGE_SIZE}, + }; + size_t buf_size = 2 * HUGEPAGE_SIZE; + uint8_t *buf; + + buf = mmap(0, buf_size, PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, -1, + 0); + ASSERT_NE(MAP_FAILED, buf); + test_ioctl_ioas_map_fixed(buf, buf_size, self->base_iova); + + test_cmd_create_access(self->ioas_id, &access_cmd.id, + MOCK_FLAGS_ACCESS_CREATE_NEEDS_PIN_PAGES); + access_cmd.access_pages.uptr = (uintptr_t)buf + PAGE_SIZE; + ASSERT_EQ(0, + ioctl(self->fd, _IOMMU_TEST_CMD(IOMMU_TEST_OP_ACCESS_PAGES), + &access_cmd)); + + /* Causes a complicated unpin across a huge page boundary */ + if (self->stdev_id) + test_ioctl_destroy(self->stdev_id); + + test_cmd_destroy_access_pages( + access_cmd.id, access_cmd.access_pages.out_access_pages_id); + test_cmd_destroy_access(access_cmd.id); + ASSERT_EQ(0, munmap(buf, buf_size)); +} + TEST_F(iommufd_ioas, access_pin) { struct iommu_test_cmd access_cmd = { |