netdev - Re: [PATCH net v2] ipv4: Fix use-after-free when flushing FIB tables

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Date:   Wed, 20 Dec 2017 19:41:17 +0200
From:   Ido Schimmel <idosch@...sch.org>
To:     Alexander Duyck <alexander.duyck@...il.com>
Cc:     Ido Schimmel <idosch@...lanox.com>,
        Netdev <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        "Duyck, Alexander H" <alexander.h.duyck@...el.com>,
        David Ahern <dsahern@...il.com>,
        Fengguang Wu <fengguang.wu@...el.com>, mlxsw@...lanox.com
Subject: Re: [PATCH net v2] ipv4: Fix use-after-free when flushing FIB tables

On Wed, Dec 20, 2017 at 07:32:21AM -0800, Alexander Duyck wrote:
> I think we might want even more description here. Specifically why
> reversing the order allows local to be destroyed before main. I was
> thinking something along the lines of:
> 
> Destroy the tables in reverse order to guarantee that the local table,
> ID 255, is destroyed before main table, ID 254. This is necessary as
> local may contain references to data contained in main.

Sent v3:
http://patchwork.ozlabs.org/patch/851564/

Thanks