From e638c1394010859a015a3b533ee452d768e62cea Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki Date: Tue, 21 Apr 2009 12:24:41 -0700 Subject: [PATCH] memcg: use rcu_dereference to access mm->owner mm->owner should be accessed with rcu_dereference(). Reported-by: KOSAKI Motohiro Signed-off-by: KAMEZAWA Hiroyuki Acked-by: Balbir Singh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/memcontrol.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 18146c9..a9e3b76 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -75,7 +75,7 @@ int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup) { struct mem_cgroup *mem; rcu_read_lock(); - mem = mem_cgroup_from_task((mm)->owner); + mem = mem_cgroup_from_task(rcu_dereference((mm)->owner)); rcu_read_unlock(); return cgroup == mem; } -- 1.8.2.3