linux-kernel - Re: [PATCH -next] ublk_drv: fix missing error return code in ublk_add

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Date:   Mon, 18 Jul 2022 15:40:53 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     Yang Yingliang <yangyingliang@...wei.com>
Cc:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        axboe@...nel.dk
Subject: Re: [PATCH -next] ublk_drv: fix missing error return code in
 ublk_add_dev()

On Mon, Jul 18, 2022 at 12:24:08PM +0800, Yang Yingliang wrote:
> If blk_mq_init_queue() fails, it should return error code in ublk_add_dev()
> 
> Fixes: cebbe577cb17 ("ublk_drv: fix request queue leak")
> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> ---
>  drivers/block/ublk_drv.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
> index 52fd0af8a4f2..bea441782cb0 100644
> --- a/drivers/block/ublk_drv.c
> +++ b/drivers/block/ublk_drv.c
> @@ -1169,8 +1169,10 @@ static int ublk_add_dev(struct ublk_device *ub)
>  		goto out_deinit_queues;
>  
>  	ub->ub_queue = blk_mq_init_queue(&ub->tag_set);
> -	if (IS_ERR(ub->ub_queue))
> +	if (IS_ERR(ub->ub_queue)) {
> +		err = PTR_ERR(ub->ub_queue);
>  		goto out_cleanup_tags;
> +	}
>  	ub->ub_queue->queuedata = ub;
>  
>  	disk = ub->ub_disk = blk_mq_alloc_disk_for_queue(ub->ub_queue,

Reviewed-by: Ming Lei <ming.lei@...hat.com>


Thanks,
Ming