netdev - [PATCH 0/4 net-2.6.25] Proper netlink kernel sockets disposal.

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Message-ID: <4790A0E3.9080006@sw.ru>
Date:	Fri, 18 Jan 2008 15:51:47 +0300
From:	"Denis V. Lunev" <den@...ru>
To:	David Miller <davem@...emloft.net>
CC:	netdev <netdev@...r.kernel.org>,
	Linux Containers <containers@...ts.osdl.org>, devel@...nvz.org
Subject: [PATCH 0/4 net-2.6.25] Proper netlink kernel sockets disposal.

Alexey Dobriyan found, that virtualized netlink kernel sockets (fibl &
rtnl) are leaked during namespace start/stop loop.

Leaking fix (simple and obvious) reveals that netlink kernel socket
disposal leads to OOPSes:
- nl_table[protocol]->listeners is double freed
- sometimes during namespace stop netlink_sock_destruct
  BUG_TRAP(!atomic_read(&sk->sk_rmem_alloc)); is hit

This set address all these issues.

Signed-off-by: Denis V. Lunev <den@...nvz.org>
Tested-by: Alexey Dobriayn <adobriyan@...nvz.org>

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