Commit 52f095ee authored Oct 18, 2007 by Pavel Emelyanov Committed by David S. Miller Oct 18, 2007

[IPV6]: Fix again the fl6_sock_lookup() fixed locking



YOSHIFUJI fairly pointed out, that the users increment should
be done under the ip6_sk_fl_lock not to give IPV6_FL_A_PUT a
chance to put this count to zero and release the flowlabel.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent bc34b841

net/ipv6/ip6_flowlabel.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -210,9 +210,9 @@ struct ip6_flowlabel * fl6_sock_lookup(struct sock *sk, __be32 label)
		for (sfl=np->ipv6_fl_list; sfl; sfl = sfl->next) {
		struct ip6_flowlabel *fl = sfl->fl;
		if (fl->label == label) {
		read_unlock_bh(&ip6_sk_fl_lock);
		fl->lastuse = jiffies;
		atomic_inc(&fl->users);
		read_unlock_bh(&ip6_sk_fl_lock);
		return fl;
		}
		}