diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/cipso_ipv4.c | 4 | ||||
| -rw-r--r-- | net/ipv4/ip_sockglue.c | 9 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 6 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 2 |
4 files changed, 19 insertions, 2 deletions
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c index 72d6f056d863..ae206163c273 100644 --- a/net/ipv4/cipso_ipv4.c +++ b/net/ipv4/cipso_ipv4.c @@ -1587,6 +1587,10 @@ int cipso_v4_validate(const struct sk_buff *skb, unsigned char **option) goto validate_return_locked; } + if (opt_iter + 1 == opt_len) { + err_offset = opt_iter; + goto validate_return_locked; + } tag_len = tag[1]; if (tag_len > (opt_len - opt_iter)) { err_offset = opt_iter + 1; diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 8a4409dd390a..ce1386a67e24 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -1243,7 +1243,14 @@ void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb) pktinfo->ipi_ifindex = 0; pktinfo->ipi_spec_dst.s_addr = 0; } - skb_dst_drop(skb); + /* We need to keep the dst for __ip_options_echo() + * We could restrict the test to opt.ts_needtime || opt.srr, + * but the following is good enough as IP options are not often used. + */ + if (unlikely(IPCB(skb)->opt.optlen)) + skb_dst_force(skb); + else + skb_dst_drop(skb); } int ip_setsockopt(struct sock *sk, int level, diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index b751abc56935..d44a6989e76d 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -773,6 +773,12 @@ ssize_t tcp_splice_read(struct socket *sock, loff_t *ppos, ret = -EAGAIN; break; } + /* if __tcp_splice_read() got nothing while we have + * an skb in receive queue, we do not want to loop. + * This might happen with URG data. + */ + if (!skb_queue_empty(&sk->sk_receive_queue)) + break; sk_wait_data(sk, &timeo, NULL); if (signal_pending(current)) { ret = sock_intr_errno(timeo); diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 4a1ba04565d1..ea6e4cff9faf 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1490,7 +1490,7 @@ try_again: return err; csum_copy_err: - if (!__sk_queue_drop_skb(sk, skb, flags)) { + if (!__sk_queue_drop_skb(sk, skb, flags, udp_skb_destructor)) { UDP_INC_STATS(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite); UDP_INC_STATS(sock_net(sk), UDP_MIB_INERRORS, is_udplite); } |