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af_iucv: correct cleanup if listen backlog is full

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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 <[email protected]>
Signed-off-by: Frank Blaschka <[email protected]>
Reported-by: Philipp Hachtmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Ursula Braun 2014-05-28 10:22:29 +02:00 • committed by David S. Miller
commit 4d520f62e0
1 changed files with 1 additions and 2 deletions
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3
net/iucv/af_iucv.c
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@ -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;
}