netdev - Re: [PATCH v2] net: openvswitch: introduce common code for flushing flows

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Date:   Thu, 13 Aug 2020 15:53:48 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     xiangxia.m.yue@...il.com
Cc:     joel@...lfernandes.org, jknoos@...gle.com, gvrose8192@...il.com,
        urezki@...il.com, paulmck@...nel.org, dev@...nvswitch.org,
        netdev@...r.kernel.org, rcu@...r.kernel.org
Subject: Re: [PATCH v2] net: openvswitch: introduce common code for
 flushing flows

From: xiangxia.m.yue@...il.com
Date: Wed, 12 Aug 2020 17:56:39 +0800

> From: Tonghao Zhang <xiangxia.m.yue@...il.com>
> 
> To avoid some issues, for example RCU usage warning and double free,
> we should flush the flows under ovs_lock. This patch refactors
> table_instance_destroy and introduces table_instance_flow_flush
> which can be invoked by __dp_destroy or ovs_flow_tbl_flush.
> 
> Fixes: 50b0e61b32ee ("net: openvswitch: fix possible memleak on destroy flow-table")
> Reported-by: Johan Knöös <jknoos@...gle.com>
> Reported-at: https://mail.openvswitch.org/pipermail/ovs-discuss/2020-August/050489.html
> Signed-off-by: Tonghao Zhang <xiangxia.m.yue@...il.com>

Applied, thank you.