> On Aug 19, 2024, at 23:37, Shakeel Butt <shakeel.butt@xxxxxxxxx> wrote: > > On Mon, Aug 19, 2024 at 04:04:15PM GMT, Muchun Song wrote: >> split_page_memcg() does not care about the returned memcg for kmem >> pages, so folio_memcg_charged() should be used, otherwise obj_cgroup_memcg >> will complain about this. > > Basically avoid calling folio_memcg() for folio_memcg_kmem(folio), > correct? Yes. Unless you hold rcu lock. > >> >> Reported-by: syzbot+ef4ecf7b6bdc4157bfa4@xxxxxxxxxxxxxxxxxxxxxxxxx >> Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx> > > Acked-by: Shakeel Butt <shakeel.butt@xxxxxxxxx> > Thanks.
