netdev - Re: [PATCH net] net/tls: Fix kernel panic when socket is in TLS ULP

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Message-ID: <a9d6ec03-1638-6282-470a-3a6b09b96652@chelsio.com>
Date:   Sat, 7 Nov 2020 02:02:42 +0530
From:   Vinay Kumar Yadav <vinay.yadav@...lsio.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, borisp@...dia.com,
        secdev@...lsio.com
Subject: Re: [PATCH net] net/tls: Fix kernel panic when socket is in TLS ULP



On 11/6/2020 12:16 AM, Jakub Kicinski wrote:
> On Thu, 5 Nov 2020 23:55:15 +0530 Vinay Kumar Yadav wrote:
>>>>> We should prevent from the socket getting into LISTEN state in the
>>>>> first place. Can we make a copy of proto_ops (like tls_sw_proto_ops)
>>>>> and set listen to sock_no_listen?
>>>>
>>>> Once tls-toe (TLS_HW_RECORD) is configured on a socket, listen() call
>>>> from user on same socket will create hash at two places.
>>>
>>> What I'm saying is - disallow listen calls on sockets with tls-toe
>>> installed on them. Is that not possible?
>>>   
>> You mean socket with tls-toe installed shouldn't be listening at other
>> than adapter? basically avoid ctx->sk_proto->hash(sk) call.
> 
> No, replace the listen callback, like I said. Why are you talking about
> hash???
>As per my understanding we can't avoid socket listen.
Not sure how replacing listen callback solve the issue,
can you please elaborate ?