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-rw-r--r--include/net/cls_cgroup.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h
index 726cc3536409..ef6c24a529e1 100644
--- a/include/net/cls_cgroup.h
+++ b/include/net/cls_cgroup.h
@@ -27,11 +27,17 @@ struct cgroup_cls_state
27#ifdef CONFIG_NET_CLS_CGROUP 27#ifdef CONFIG_NET_CLS_CGROUP
28static inline u32 task_cls_classid(struct task_struct *p) 28static inline u32 task_cls_classid(struct task_struct *p)
29{ 29{
30 int classid;
31
30 if (in_interrupt()) 32 if (in_interrupt())
31 return 0; 33 return 0;
32 34
33 return container_of(task_subsys_state(p, net_cls_subsys_id), 35 rcu_read_lock();
34 struct cgroup_cls_state, css)->classid; 36 classid = container_of(task_subsys_state(p, net_cls_subsys_id),
37 struct cgroup_cls_state, css)->classid;
38 rcu_read_unlock();
39
40 return classid;
35} 41}
36#else 42#else
37extern int net_cls_subsys_id; 43extern int net_cls_subsys_id;