On 13.11.25 04:46, Carlos Llamas wrote:
Commit 4dfd4bba8578 ("selftests/mm/uffd: refactor non-composite global vars into struct") moved some of the operations previously implemented in uffd_setup_environment() earlier in the main test loop.
The calculation of nr_pages, which involves a division by page_size, now occurs before checking that default_huge_page_size() returns a non-zero This leads to a division-by-zero error on systems with !CONFIG_HUGETLB.
Fix this by relocating the non-zero page_size check before the nr_pages calculation, as it was originally implemented.
Cc: stable@vger.kernel.org
Do we CC stable on unit tests? From my recollection, no.
Fixes: 4dfd4bba8578 ("selftests/mm/uffd: refactor non-composite global vars into struct") Signed-off-by: Carlos Llamas cmllamas@google.com
Acked-by: David Hildenbrand (Red Hat) david@kernel.org