net: Add checking to rcu_dereference() primitives

[deliverable/linux.git] / net / core / filter.c

diff --git a/net/core/filter.c b/net/core/filter.c
index 08db7b9143a35709f61babe2932e5d7ff6754cea..3541aa48d21d9a8e575f67fba50d5988e73f7533 100644 (file)
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -86,7 +86,7 @@ int sk_filter(struct sock *sk, struct sk_buff *skb)
                return err;
 
        rcu_read_lock_bh();
-       filter = rcu_dereference(sk->sk_filter);
+       filter = rcu_dereference_bh(sk->sk_filter);
        if (filter) {
                unsigned int pkt_len = sk_run_filter(skb, filter->insns,
                                filter->len);
@@ -521,7 +521,7 @@ int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
        }
 
        rcu_read_lock_bh();
-       old_fp = rcu_dereference(sk->sk_filter);
+       old_fp = rcu_dereference_bh(sk->sk_filter);
        rcu_assign_pointer(sk->sk_filter, fp);
        rcu_read_unlock_bh();
 
@@ -536,7 +536,7 @@ int sk_detach_filter(struct sock *sk)
        struct sk_filter *filter;
 
        rcu_read_lock_bh();
-       filter = rcu_dereference(sk->sk_filter);
+       filter = rcu_dereference_bh(sk->sk_filter);
        if (filter) {
                rcu_assign_pointer(sk->sk_filter, NULL);
                sk_filter_delayed_uncharge(sk, filter);