The get_hw_info uses a smaller user buffer on purpose to check how the kernel updates only the fields that fit in the buffer. The test created a custom smaller struct for this, but the helper function later treats the buffer as struct iommu_test_hw_info. This makes the compiler warn about a possible out-of-bounds access (-Warray-bounds).
This keeps the test behavior the same and removes the warning. Signed-off-by: Kathara Sasikumar <[email protected]> --- tools/testing/selftests/iommu/iommufd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 10e051b6f592..f6aceb65313f 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -755,9 +755,7 @@ TEST_F(iommufd_ioas, get_hw_info) struct iommu_test_hw_info info; uint64_t trailing_bytes; } buffer_larger; - struct iommu_test_hw_info_buffer_smaller { - __u32 flags; - } buffer_smaller; + struct iommu_test_hw_info buffer_smaller; if (self->device_id) { uint8_t max_pasid = 0; -- 2.51.0
