| commit | 5ff6e2fff88ef9bf110c5e85a48e7b557bfc64c1 | [log] [tgz] |
|---|---|---|
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | Sat May 27 11:21:01 2023 +0800 |
| committer | Andrew Morton <akpm@linux-foundation.org> | Mon Jun 12 11:31:52 2023 -0700 |
| tree | be73a60abd20e77bb08bf546c842e4f3cdaba5d3 | |
| parent | 2192bba03d80f829233bfa34506b428f71e531e7 [diff] |
mm/damon/core: fix divide error in damon_nr_accesses_to_accesses_bp() If 'aggr_interval' is smaller than 'sample_interval', max_nr_accesses in damon_nr_accesses_to_accesses_bp() becomes zero which leads to divide error, let's validate the values of them in damon_set_attrs() to fix it, which similar to others attrs check. Link: https://lkml.kernel.org/r/20230527032101.167788-1-wangkefeng.wang@huawei.com Fixes: 2f5bef5a590b ("mm/damon/core: update monitoring results for new monitoring attributes") Reported-by: syzbot+841a46899768ec7bec67@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=841a46899768ec7bec67 Link: https://lore.kernel.org/damon/00000000000055fc4e05fc975bc2@google.com/ Reviewed-by: SeongJae Park <sj@kernel.org> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>