selftests/mm: unpoison pages in memory-failure teardown

The memory-failure tests call cleanup() only after all result checks.  A
failed ASSERT_* invokes fixture teardown and aborts the test, so it skips
cleanup() and leaves the injected page hardware-poisoned.

Invoke cleanup() from FIXTURE_TEARDOWN() instead.  Guard it with
self->injection_attempted so tests that exit before injection do not try
to unpoison a page when no injection was attempted.  Injection can poison
a page before returning an error or delivering SIGBUS, so teardown must
clean up after every injection attempt.  This runs the existing HWPoison
and HardwareCorrupted checks on both normal and assertion-failure paths.

Link: https://lore.kernel.org/20260729091127.1001179-1-usama.anjum@arm.com
Fixes: ff4ef2fbd101 ("selftests/mm: add memory failure anonymous page test")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@arm.com>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

0 files changed, 0 insertions, 0 deletions