diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/xfrm4_output.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c index 6802d1aee424..7c3df14daef3 100644 --- a/net/ipv4/xfrm4_output.c +++ b/net/ipv4/xfrm4_output.c @@ -72,6 +72,8 @@ int xfrm4_output_finish(struct sock *sk, struct sk_buff *skb) static int __xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb) { struct xfrm_state *x = skb_dst(skb)->xfrm; + const struct xfrm_state_afinfo *afinfo; + int ret = -EAFNOSUPPORT; #ifdef CONFIG_NETFILTER if (!x) { @@ -80,7 +82,15 @@ static int __xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb) } #endif - return x->outer_mode->afinfo->output_finish(sk, skb); + rcu_read_lock(); + afinfo = xfrm_state_afinfo_get_rcu(x->outer_mode->family); + if (likely(afinfo)) + ret = afinfo->output_finish(sk, skb); + else + kfree_skb(skb); + rcu_read_unlock(); + + return ret; } int xfrm4_output(struct net *net, struct sock *sk, struct sk_buff *skb) |