netdev - inet_csk_get_port lock imbalance?

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Message-ID: <4A3A476A.1060808@gmail.com>
Date:	Thu, 18 Jun 2009 15:55:54 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	David Miller <davem@...emloft.net>
CC:	netdev@...r.kernel.org, kuznet@....inr.ac.ru
Subject: inet_csk_get_port lock imbalance?

Hi,

we've found a weird locking discipline in inet_csk_get_port. Who is
supposed to unlock the spin lock in the place marked in the code below?

do {
        head = &hashinfo->bhash[inet_bhashfn(net, rover,
                        hashinfo->bhash_size)];
        spin_lock(&head->lock);
        inet_bind_bucket_for_each(tb, node, &head->chain)
                if (ib_net(tb) == net && tb->port == rover) {
...
		}
        break;  ////////// here
next:
        spin_unlock(&head->lock);
        if (++rover > high)
                rover = low;
} while (--remaining > 0);

Thanks.

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