From: Jens Axboe <[email protected]>
To: Pavel Begunkov <[email protected]>, [email protected]
Subject: Re: [PATCH 5.13] io_uring: fix NULL reg-buffer
Date: Mon, 26 Apr 2021 09:04:20 -0600 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <830020f9c387acddd51962a3123b5566571b8c6d.1619446608.git.asml.silence@gmail.com>
On 4/26/21 8:17 AM, Pavel Begunkov wrote:
> io_import_fixed() doesn't expect a registered buffer slot to be NULL and
> would fail stumbling on it. We don't allow it, but if during
> __io_sqe_buffers_update() rsrc removal succeeds but following register
> fails, we'll get such a situation.
>
> Do it atomically and don't remove buffers until we sure that a new one
> can be set.
Applied, thanks.
--
Jens Axboe
prev parent reply other threads:[~2021-04-26 15:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-26 14:17 [PATCH 5.13] io_uring: fix NULL reg-buffer Pavel Begunkov
2021-04-26 15:04 ` Jens Axboe [this message]
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