net: Fix suspicious RCU usage in bpf_sk_reuseport_detach()

[platform/kernel/linux-rpi.git] / kernel / bpf / reuseport_array.c

diff --git a/kernel/bpf/reuseport_array.c b/kernel/bpf/reuseport_array.c
index 85fa9db..82c6161 100644 (file)
--- a/kernel/bpf/reuseport_array.c
+++ b/kernel/bpf/reuseport_array.c
@@ -24,7 +24,7 @@ void bpf_sk_reuseport_detach(struct sock *sk)
        struct sock __rcu **socks;
 
        write_lock_bh(&sk->sk_callback_lock);
-       socks = __rcu_dereference_sk_user_data_with_flags(sk, SK_USER_DATA_BPF);
+       socks = __locked_read_sk_user_data_with_flags(sk, SK_USER_DATA_BPF);
        if (socks) {
                WRITE_ONCE(sk->sk_user_data, NULL);
                /*