netdev - Re: [PATCH V2 net 1/1] smc: switch to usage of IB_PD_UNSAFE_GLOBAL

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Message-ID: <20170513112948.GK3616@mtr-leonro.local>
Date:   Sat, 13 May 2017 14:29:48 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Ursula Braun <ubraun@...ux.vnet.ibm.com>
Cc:     davem@...emloft.net, hch@....de, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-s390@...r.kernel.org,
        jwi@...ux.vnet.ibm.com, schwidefsky@...ibm.com,
        heiko.carstens@...ibm.com, raspl@...ux.vnet.ibm.com
Subject: Re: [PATCH V2 net 1/1] smc: switch to usage of
 IB_PD_UNSAFE_GLOBAL_RKEY

On Fri, May 12, 2017 at 07:09:52PM +0200, Ursula Braun wrote:
> This patch makes users aware of the current security implications
> when using smc.
>
> The final fix to resolve the reported security issue is worked on;
> respective patches will follow as soon as possible.
>
> Signed-off-by: Ursula Braun <ubraun@...ux.vnet.ibm.com>

I'm glad that you moved to use IB_PD_UNSAFE_GLOBAL_RKEY, so the users
will see the warning in their dmesg log.

However can you please update your commit log? There is need to add
description of security issue (access to whole physical memory), clear
message that doesn't fix anything and remove mentioning unpredictable
future (... as soon as possible ...).

Thanks

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