netdev - Re: [PATCH RESEND] io_uring/af_unix: disable sending io

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Message-ID: <c60213c2-572f-47cb-ba7c-812de9a8519f@gmail.com>
Date: Sun, 10 Dec 2023 01:18:00 +0000
From: Pavel Begunkov <asml.silence@...il.com>
To: patchwork-bot+netdevbpf@...nel.org
Cc: io-uring@...r.kernel.org, axboe@...nel.dk, jannh@...gle.com,
 davem@...emloft.net, kuba@...nel.org, edumazet@...gle.com,
 pabeni@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH RESEND] io_uring/af_unix: disable sending io_uring over
 sockets

On 12/9/23 21:30, patchwork-bot+netdevbpf@...nel.org wrote:
> Hello:
> 
> This patch was applied to netdev/net.git (main)
> by David S. Miller <davem@...emloft.net>:
> 
> On Wed,  6 Dec 2023 13:55:19 +0000 you wrote:
>> File reference cycles have caused lots of problems for io_uring
>> in the past, and it still doesn't work exactly right and races with
>> unix_stream_read_generic(). The safest fix would be to completely
>> disallow sending io_uring files via sockets via SCM_RIGHT, so there
>> are no possible cycles invloving registered files and thus rendering
>> SCM accounting on the io_uring side unnecessary.
>>
>> [...]
> 
> Here is the summary with links:
>    - [RESEND] io_uring/af_unix: disable sending io_uring over sockets
>      https://git.kernel.org/netdev/net/c/69db702c8387

It has already been taken by Jens into the io_uring tree, and a pr
with it was merged by Linus. I think it should be dropped from
the net tree?

-- 
Pavel Begunkov