diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c20ef3c1d6fe..c7de62c8f86f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4362,6 +4362,7 @@ static void mem_cgroup_css_reset(struct cgroup_subsys_state *css)
 
 	page_counter_set_max(&memcg->memory, PAGE_COUNTER_MAX);
 	page_counter_set_max(&memcg->swap, PAGE_COUNTER_MAX);
+	WRITE_ONCE(memcg->oom_group, false);
 #ifdef CONFIG_ZSWAP
 	WRITE_ONCE(memcg->zswap_max, PAGE_COUNTER_MAX);
 	WRITE_ONCE(memcg->zswap_writeback, true);