The quilt patch titled Subject: mm/damon/reclaim: avoid divide-by-zero in damon_reclaim_apply_parameters() has been removed from the -mm tree. Its filename was mm-damon-reclaim-avoid-divide-by-zero-in-damon_reclaim_apply_parameters.patch
This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------ From: Quanmin Yan yanquanmin1@huawei.com Subject: mm/damon/reclaim: avoid divide-by-zero in damon_reclaim_apply_parameters() Date: Wed, 27 Aug 2025 19:58:58 +0800
When creating a new scheme of DAMON_RECLAIM, the calculation of 'min_age_region' uses 'aggr_interval' as the divisor, which may lead to division-by-zero errors. Fix it by directly returning -EINVAL when such a case occurs.
Link: https://lkml.kernel.org/r/20250827115858.1186261-3-yanquanmin1@huawei.com Fixes: f5a79d7c0c87 ("mm/damon: introduce struct damos_access_pattern") Signed-off-by: Quanmin Yan yanquanmin1@huawei.com Reviewed-by: SeongJae Park sj@kernel.org Cc: Kefeng Wang wangkefeng.wang@huawei.com Cc: ze zuo zuoze1@huawei.com Cc: stable@vger.kernel.org [6.1+] Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
mm/damon/reclaim.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/mm/damon/reclaim.c~mm-damon-reclaim-avoid-divide-by-zero-in-damon_reclaim_apply_parameters +++ a/mm/damon/reclaim.c @@ -194,6 +194,11 @@ static int damon_reclaim_apply_parameter if (err) return err;
+ if (!damon_reclaim_mon_attrs.aggr_interval) { + err = -EINVAL; + goto out; + } + err = damon_set_attrs(param_ctx, &damon_reclaim_mon_attrs); if (err) goto out; _
Patches currently in -mm which might be from yanquanmin1@huawei.com are
mm-damon-add-damon_ctx-min_sz_region.patch