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selftests/mm: uffd-unit-test check if huge page size is 0

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If HUGETLBFS is not enabled then the default_huge_page_size function will
return 0 and cause a divide by 0 error. Add a check to see if the huge page
size is 0 and skip the hugetlb tests if it is.

Link: https://lkml.kernel.org/r/20240205145055.3545806-2-terry.tritton@linaro.org
Fixes: 16a45b57cb ("selftests/mm: add framework for uffd-unit-test")
Signed-off-by: Terry Tritton <terry.tritton@linaro.org>
Cc: Peter Griffin <peter.griffin@linaro.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Terry Tritton 2024-02-05 14:50:56 +00:00 committed by Andrew Morton
parent e9e3db6996
commit 7efa6f2c80
1 changed files with 6 additions and 0 deletions
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6
tools/testing/selftests/mm/uffd-unit-tests.c
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@ -1517,6 +1517,12 @@ int main(int argc, char *argv[])
continue;
uffd_test_start("%s on %s", test->name, mem_type->name);
if ((mem_type->mem_flag == MEM_HUGETLB ||
mem_type->mem_flag == MEM_HUGETLB_PRIVATE) &&
(default_huge_page_size() == 0)) {
uffd_test_skip("huge page size is 0, feature missing?");
continue;
}
if (!uffd_feature_supported(test)) {
uffd_test_skip("feature missing");
continue;