The mfd and mfd_buffer will be used in the tests directly without an extra
check. Test them in setup_sizes() to ensure they are safe to use.
Fixes: 0bcceb1f51c7 ("iommufd: Selftest coverage for IOMMU_IOAS_MAP_FILE")
Cc: [email protected]
Reviewed-by: Jason Gunthorpe <[email protected]>
Signed-off-by: Nicolin Chen <[email protected]>
---
tools/testing/selftests/iommu/iommufd.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/iommu/iommufd.c
b/tools/testing/selftests/iommu/iommufd.c
index e7eb11a94034..e61218c0537f 100644
--- a/tools/testing/selftests/iommu/iommufd.c
+++ b/tools/testing/selftests/iommu/iommufd.c
@@ -54,6 +54,8 @@ static __attribute__((constructor)) void setup_sizes(void)
mfd_buffer = memfd_mmap(BUFFER_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED,
&mfd);
+ assert(mfd_buffer != MAP_FAILED);
+ assert(mfd > 0);
}
FIXTURE(iommufd)
--
2.43.0
