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authorWillem de Bruijn <willemb@google.com>2019-01-15 11:40:02 -0500
committerDavid S. Miller <davem@davemloft.net>2019-01-16 15:48:11 -0800
commit0f149c9fec3cd720628ecde83bfc6f64c1e7dcb6 (patch)
tree5ffd4dacfcc608682b18a9255b393f55e3ca6fdb /net/ipv6
parent1a9352687c19e4937d861ff2c5c6fc45c0a08aff (diff)
downloadlinux-stericsson-0f149c9fec3cd720628ecde83bfc6f64c1e7dcb6.tar.gz
udp: with udp_segment release on error path
Failure __ip_append_data triggers udp_flush_pending_frames, but these tests happen later. The skb must be freed directly. Fixes: bec1f6f697362 ("udp: generate gso with UDP_SEGMENT") Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/udp.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 7c3505006f8e..e1f2b9660666 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1132,15 +1132,23 @@ static int udp_v6_send_skb(struct sk_buff *skb, struct flowi6 *fl6,
const int hlen = skb_network_header_len(skb) +
sizeof(struct udphdr);
- if (hlen + cork->gso_size > cork->fragsize)
+ if (hlen + cork->gso_size > cork->fragsize) {
+ kfree_skb(skb);
return -EINVAL;
- if (skb->len > cork->gso_size * UDP_MAX_SEGMENTS)
+ }
+ if (skb->len > cork->gso_size * UDP_MAX_SEGMENTS) {
+ kfree_skb(skb);
return -EINVAL;
- if (udp_sk(sk)->no_check6_tx)
+ }
+ if (udp_sk(sk)->no_check6_tx) {
+ kfree_skb(skb);
return -EINVAL;
+ }
if (skb->ip_summed != CHECKSUM_PARTIAL || is_udplite ||
- dst_xfrm(skb_dst(skb)))
+ dst_xfrm(skb_dst(skb))) {
+ kfree_skb(skb);
return -EIO;
+ }
skb_shinfo(skb)->gso_size = cork->gso_size;
skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;