linux-kernel - [PATCH] Fix ipc entries removal

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Message-ID: <4545EAF9.6090507@openvz.org>
Date:	Mon, 30 Oct 2006 15:07:21 +0300
From:	Pavel Emelianov <xemul@...nvz.org>
To:	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	Kirill Korotaev <dev@...nvz.org>, devel@...nvz.org
Subject: [PATCH] Fix ipc entries removal

This patch fixes two issuses related to ipc_ids->entries freeing.

1. When freeing ipc namespace we need to free entries allocated
   with ipc_init_ids().

2. When removing old entries in grow_ary() ipc_rcu_putref()
   may be called on entries set to &ids->nullentry earlier in
   ipc_init_ids().
   This is almost impossible without namespaces, but with
   them this situation becomes possible.

Found during OpenVZ testing after obvious leaks in beancounters.

Signed-off-by: Pavel Emelianov <xemul@...nvz.org>

View attachment "diff-ipc-entries-fix" of type "text/plain" (1905 bytes)