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-rw-r--r--net/sched/cls_bpf.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index 243c9f225a73..5c4171c5d2bd 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -64,8 +64,10 @@ static int cls_bpf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
{
struct cls_bpf_head *head = rcu_dereference_bh(tp->root);
struct cls_bpf_prog *prog;
- int ret;
+ int ret = -1;
+ /* Needed here for accessing maps. */
+ rcu_read_lock();
list_for_each_entry_rcu(prog, &head->plist, link) {
int filter_res = BPF_PROG_RUN(prog->filter, skb);
@@ -80,10 +82,11 @@ static int cls_bpf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
if (ret < 0)
continue;
- return ret;
+ break;
}
+ rcu_read_unlock();
- return -1;
+ return ret;
}
static bool cls_bpf_is_ebpf(const struct cls_bpf_prog *prog)