1 files changed, 10 insertions, 5 deletions

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 36d4e44d6233..fc820cd75453 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -315,7 +315,7 @@ static void unix_write_space(struct sock *sk)
 {
         read_lock(&sk->sk_callback_lock);
         if (unix_writable(sk)) {
-                if (sk->sk_sleep && waitqueue_active(sk->sk_sleep))
+                if (sk_has_sleeper(sk))
                         wake_up_interruptible_sync(sk->sk_sleep);
                 sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
         }
@@ -1074,6 +1074,8 @@ restart:
         err = -ECONNREFUSED;
         if (other->sk_state != TCP_LISTEN)
                 goto out_unlock;
+        if (other->sk_shutdown & RCV_SHUTDOWN)
+                goto out_unlock;
 
         if (unix_recvq_full(other)) {
                 err = -EAGAIN;
@@ -1501,6 +1503,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
         struct sk_buff *skb;
         int sent = 0;
         struct scm_cookie tmp_scm;
+        bool fds_sent = false;
 
         if (NULL == siocb->scm)
                 siocb->scm = &tmp_scm;
@@ -1562,12 +1565,14 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
                 size = min_t(int, size, skb_tailroom(skb));
 
                 memcpy(UNIXCREDS(skb), &siocb->scm->creds, sizeof(struct ucred));
-                if (siocb->scm->fp) {
+                /* Only send the fds in the first buffer */
+                if (siocb->scm->fp && !fds_sent) {
                         err = unix_attach_fds(siocb->scm, skb);
                         if (err) {
                                 kfree_skb(skb);
                                 goto out_err;
                         }
+                        fds_sent = true;
                 }
 
                 err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
@@ -1985,7 +1990,7 @@ static unsigned int unix_poll(struct file *file, struct socket *sock, poll_table
         struct sock *sk = sock->sk;
         unsigned int mask;
 
-        poll_wait(file, sk->sk_sleep, wait);
+        sock_poll_wait(file, sk->sk_sleep, wait);
         mask = 0;
 
         /* exceptional events? */
@@ -2022,7 +2027,7 @@ static unsigned int unix_dgram_poll(struct file *file, struct socket *sock,
         struct sock *sk = sock->sk, *other;
         unsigned int mask, writable;
 
-        poll_wait(file, sk->sk_sleep, wait);
+        sock_poll_wait(file, sk->sk_sleep, wait);
         mask = 0;
 
         /* exceptional events? */
@@ -2053,7 +2058,7 @@ static unsigned int unix_dgram_poll(struct file *file, struct socket *sock,
                 other = unix_peer_get(sk);
                 if (other) {
                         if (unix_peer(other) != sk) {
-                                poll_wait(file, &unix_sk(other)->peer_wait,
+                                sock_poll_wait(file, &unix_sk(other)->peer_wait,
                                           wait);
                                 if (unix_recvq_full(other))
                                         writable = 0;