diff options
| -rw-r--r-- | net/l2tp/l2tp_core.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index c64ce0a0bb03..78530299ae38 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1060,6 +1060,12 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len IPSKB_REROUTED); nf_reset(skb); + bh_lock_sock(sk); + if (sock_owned_by_user(sk)) { + dev_kfree_skb(skb); + goto out_unlock; + } + /* Get routing info from the tunnel socket */ skb_dst_drop(skb); skb_dst_set(skb, dst_clone(__sk_dst_get(sk))); @@ -1106,6 +1112,8 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len l2tp_skb_set_owner_w(skb, sk); l2tp_xmit_core(session, skb, data_len); +out_unlock: + bh_unlock_sock(sk); abort: return 0; |