diff options
| -rw-r--r-- | net/ipv4/ip_fragment.c | 14 | ||||
| -rw-r--r-- | net/ipv6/reassembly.c | 12 |
2 files changed, 20 insertions, 6 deletions
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index a6445b843ef4..52c273ea05c3 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -248,8 +248,7 @@ static void ip_expire(unsigned long arg) if (!head->dev) goto out_rcu_unlock; - /* skb dst is stale, drop it, and perform route lookup again */ - skb_dst_drop(head); + /* skb has no dst, perform route lookup again */ iph = ip_hdr(head); err = ip_route_input_noref(head, iph->daddr, iph->saddr, iph->tos, head->dev); @@ -523,9 +522,16 @@ found: qp->q.max_size = skb->len + ihl; if (qp->q.last_in == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) && - qp->q.meat == qp->q.len) - return ip_frag_reasm(qp, prev, dev); + qp->q.meat == qp->q.len) { + unsigned long orefdst = skb->_skb_refdst; + skb->_skb_refdst = 0UL; + err = ip_frag_reasm(qp, prev, dev); + skb->_skb_refdst = orefdst; + return err; + } + + skb_dst_drop(skb); inet_frag_lru_move(&qp->q); return -EINPROGRESS; diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index 196ab9347ad1..0ba10e53a629 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -330,9 +330,17 @@ found: } if (fq->q.last_in == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) && - fq->q.meat == fq->q.len) - return ip6_frag_reasm(fq, prev, dev); + fq->q.meat == fq->q.len) { + int res; + unsigned long orefdst = skb->_skb_refdst; + + skb->_skb_refdst = 0UL; + res = ip6_frag_reasm(fq, prev, dev); + skb->_skb_refdst = orefdst; + return res; + } + skb_dst_drop(skb); inet_frag_lru_move(&fq->q); return -1; |