linux-kernel - Re: Potentially broken error path in bio_map_user

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Message-ID: <CAKXUXMxxNBYhb37PQRnRaVAwd98ASKKeWDYDE11SzvyTQ9Lv9g@mail.gmail.com>
Date:   Tue, 4 Jan 2022 13:04:50 +0100
From:   Lukas Bulwahn <lukas.bulwahn@...il.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kernel-janitors <kernel-janitors@...r.kernel.org>
Subject: Re: Potentially broken error path in bio_map_user_iov()

On Mon, Jan 3, 2022 at 5:35 PM Christoph Hellwig <hch@....de> wrote:
>
> Hi Lukas,
>
> we can just remove the queue_dma_alignment check entirely, the caller
> already ensures bio_copy_user_iov is called instead of this case.

Okay, I have sent you a patch to do so:

https://lore.kernel.org/all/20220104120158.20177-1-lukas.bulwahn@gmail.com/

Feel free to pick it, reword it, rework it or ignore it.

Lukas