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Date:   Mon, 23 Jan 2023 16:23:49 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Pavel Begunkov <asml.silence@gmail.com>
Cc:     stable@vger.kernel.org, Jens Axboe <axboe@kernel.dk>
Subject: Re: [PATCH stable-6.1 1/1] io_uring/msg_ring: fix remote queue to
 disabled ring
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On Mon, Jan 23, 2023 at 03:03:24PM +0000, Pavel Begunkov wrote:
> [ upstream commit 8579538c89e33ce78be2feb41e07489c8cbf8f31 ]
> 
> IORING_SETUP_R_DISABLED rings don't have the submitter task set, so
> it's not always safe to use ->submitter_task. Disallow posting msg_ring
> messaged to disabled rings. Also add task NULL check for loosy sync
> around testing for IORING_SETUP_R_DISABLED.
> 
> Cc: stable@vger.kernel.org
> Fixes: 6d043ee1164ca ("io_uring: do msg_ring in target task via tw")

This commit is only in 6.2-rc1, so is it really relevant for this commit
to go to 6.1?

thanks,

greg k-h