From: Ursula Braun Date: Wed, 28 May 2014 08:22:29 +0000 (+0200) Subject: af_iucv: correct cleanup if listen backlog is full X-Git-Tag: firefly_0821_release~176^2~3765^2~120^2~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4d520f62e0f4fd310a2307d0244ef184ce9200ba;p=firefly-linux-kernel-4.4.55.git af_iucv: correct cleanup if listen backlog is full In case of transport HIPER a sock struct is allocated for an incoming connect request. If the backlog queue is full this socket is not needed, but is left in the list of af_iucv sockets. Final socket release posts console message "Attempt to release alive iucv socket". This patch makes sure the new created socket is cleaned up correctly if the backlog queue is full. Signed-off-by: Ursula Braun Signed-off-by: Frank Blaschka Reported-by: Philipp Hachtmann Signed-off-by: David S. Miller --- diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index 60f5c20d510a..7a95fa4a3de1 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -1943,11 +1943,10 @@ static int afiucv_hs_callback_syn(struct sock *sk, struct sk_buff *skb) sk_acceptq_is_full(sk) || !nsk) { /* error on server socket - connection refused */ - if (nsk) - sk_free(nsk); afiucv_swap_src_dest(skb); trans_hdr->flags = AF_IUCV_FLAG_SYN | AF_IUCV_FLAG_FIN; err = dev_queue_xmit(skb); + iucv_sock_kill(nsk); bh_unlock_sock(sk); goto out; }