From: Marek Lindner <lindner_marek@yahoo.de>
To: The list for a Better Approach To Mobile Ad-hoc Networking
<b.a.t.m.a.n@lists.open-mesh.org>
Subject: Re: [B.A.T.M.A.N.] [PATCHv2 9/9] batman-adv: count batman_if list queries as reference
Date: Sat, 18 Sep 2010 16:42:07 +0200 [thread overview]
Message-ID: <201009181642.08297.lindner_marek@yahoo.de> (raw)
In-Reply-To: <1284744426-12239-1-git-send-email-sven.eckelmann@gmx.de>
On Friday 17 September 2010 19:27:06 Sven Eckelmann wrote:
> The return of get_batman_if_by_netdev and get_active_batman_if leaks a
> pointer from the rcu protected list of interfaces. We must protect it to
> prevent a too early release of the memory. Those functions must increase
> the reference counter before rcu_read_unlock or it may be to late to
> prevent a free.
It seems this patch does not properly deal with bat_priv->primary_if. Please
review my revised patch and let me know if you think it is ok.
Cheers,
Marek
next prev parent reply other threads:[~2010-09-18 14:42 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-17 15:40 [B.A.T.M.A.N.] [PATCHv2 0/9] RCU locking patches Sven Eckelmann
2010-09-17 15:40 ` [B.A.T.M.A.N.] [PATCH 1/9] batman-adv: Introduce if_list_lock to protect if_list Sven Eckelmann
2010-09-17 15:40 ` [B.A.T.M.A.N.] [PATCH 2/9] batman-adv: Protect update side of gw_list Sven Eckelmann
2010-09-17 15:40 ` [B.A.T.M.A.N.] [PATCH 3/9] batman-adv: Always protect list_for_each_entry_rcu with RCU Sven Eckelmann
2010-09-17 15:41 ` [B.A.T.M.A.N.] [PATCH 4/9] batman-adv: Remove unneeded rcu_read_lock Sven Eckelmann
2010-09-17 15:41 ` [B.A.T.M.A.N.] [PATCH 5/9] batman-adv: Use synchronize_rcu instead of call_rcu Sven Eckelmann
2010-09-17 15:41 ` [B.A.T.M.A.N.] [PATCH 6/9] batman-adv: Use refcnt to track usage count of gw_node Sven Eckelmann
2010-09-17 15:41 ` [B.A.T.M.A.N.] [PATCH 7/9] batman-adv: Use refcnt to track usage count of batman_if Sven Eckelmann
2010-09-17 15:41 ` [B.A.T.M.A.N.] [PATCH 8/9] batman-adv: count election of gateway as reference Sven Eckelmann
2010-09-17 15:41 ` [B.A.T.M.A.N.] [PATCH 9/9] batman-adv: count batman_if list queries " Sven Eckelmann
2010-09-17 17:27 ` [B.A.T.M.A.N.] [PATCHv2 " Sven Eckelmann
2010-09-18 14:42 ` Marek Lindner [this message]
2010-09-18 14:42 ` [B.A.T.M.A.N.] [PATCH] " Marek Lindner
2010-09-18 15:21 ` [B.A.T.M.A.N.] [PATCHv2 9/9] " Sven Eckelmann
2010-09-18 15:23 ` [B.A.T.M.A.N.] [PATCH 1/2] batman-adv: Track references of batman_if in set_primary_if Sven Eckelmann
2010-09-18 15:23 ` [B.A.T.M.A.N.] [PATCH 2/2] Introduce update_primary_addr to update mac address Sven Eckelmann
2010-09-18 15:41 ` [B.A.T.M.A.N.] [PATCHv2 9/9] batman-adv: count batman_if list queries as reference Marek Lindner
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