Fix a few Sashiko-found unurgent bugs. Patch 1 fixes use of uninitialized damos->last_applied field. Patches 2-7 fix DAMON kunit tests that do invalid memory access under test failures.
The bugs are better to be fixed and eventually merged into stable@ kernel. That said, the fixes are arguably not urgent. Patch 1 only introduces negligible DAMOS efficiency degradation in occasional cases. Kunit fixes could introduce quite bad consequences but those are test code that affect only test run setups. Changes from RFC - RFC: https://lore.kernel.org/[email protected] - Add missed region split failure check in filter_out() test. - Rebase to latest mm-new. SJ Park (7): mm/damon/core: initialize damos->last_applied mm/damon/core-kunit: check region count before testing in split_at() mm/damon/vaddr-kunit: check region count in three_regions test mm/damon/core-kunit: handle region split failure in filter_out() mm/damon/core-kunit: skip wrong dest walk in commit_dests_for() mm/damon/core-kunit: skip wrong quota goal walk in commit_quota_goals() mm/damon/core-kunit: skip wrong region walk in commit_target_regions() mm/damon/core.c | 1 + mm/damon/tests/core-kunit.h | 30 ++++++++++++++++++++++++++++-- mm/damon/tests/vaddr-kunit.h | 5 +++++ 3 files changed, 34 insertions(+), 2 deletions(-) base-commit: 0ad94b65c75dc6c6c3fa742f0a6213ed578c771a -- 2.47.3
