[IPV6]: inet_sk(sk)->cork.opt leak
IPv6 UDP sockets wth IPv4 mapped address use udp_sendmsg to send the data
actually. In this case ip_flush_pending_frames should be called instead
of ip6_flush_pending_frames.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
diff --git a/include/net/udp.h b/include/net/udp.h
index 3e55a99..ccce837 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -135,6 +135,7 @@
extern int udp_sendmsg(struct kiocb *iocb, struct sock *sk,
struct msghdr *msg, size_t len);
+extern void udp_flush_pending_frames(struct sock *sk);
extern int udp_rcv(struct sk_buff *skb);
extern int udp_ioctl(struct sock *sk, int cmd, unsigned long arg);
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index db1cb7c..56fcda3 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -420,7 +420,7 @@
/*
* Throw away all pending data and cancel the corking. Socket is locked.
*/
-static void udp_flush_pending_frames(struct sock *sk)
+void udp_flush_pending_frames(struct sock *sk)
{
struct udp_sock *up = udp_sk(sk);
@@ -430,6 +430,7 @@
ip_flush_pending_frames(sk);
}
}
+EXPORT_SYMBOL(udp_flush_pending_frames);
/**
* udp4_hwcsum_outgoing - handle outgoing HW checksumming
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 1b35c47..dd30962 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -534,7 +534,9 @@
{
struct udp_sock *up = udp_sk(sk);
- if (up->pending) {
+ if (up->pending == AF_INET)
+ udp_flush_pending_frames(sk);
+ else if (up->pending) {
up->len = 0;
up->pending = 0;
ip6_flush_pending_frames(sk);