diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index e6276fa3750b..38bca2c4897d 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1176,7 +1176,11 @@ static void udp_set_dev_scratch(struct sk_buff *skb) scratch->csum_unnecessary = !!skb_csum_unnecessary(skb); scratch->is_linear = !skb_is_nonlinear(skb); #endif - if (likely(!skb->_skb_refdst)) + /* all head states execept sp (dst, sk, nf) are always cleared by + * udp_rcv() and we need to preserve secpath, if present, to eventually + * process IP_CMSG_PASSSEC at recvmsg() time + */ + if (likely(!skb_sec_path(skb))) scratch->_tsize_state |= UDP_SKB_IS_STATELESS; } @@ -1782,13 +1786,6 @@ static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) sk_mark_napi_id_once(sk, skb); } - /* At recvmsg() time we may access skb->dst or skb->sp depending on - * the IP options and the cmsg flags, elsewhere can we clear all - * pending head states while they are hot in the cache - */ - if (likely(IPCB(skb)->opt.optlen == 0 && !skb_sec_path(skb))) - skb_release_head_state(skb); - rc = __udp_enqueue_schedule_skb(sk, skb); if (rc < 0) { int is_udplite = IS_UDPLITE(sk);