Re: [PATCH] nvme: don't reference NS after unlocking in nvme_ns_head_ctrl_ioctl()

On 7/6/26 2:54 PM, John Garry wrote:
> In nvme_ns_head_ctrl_ioctl(), once we drop the SRCU read lock we should
> not reference the NS to lookup the controller, so use the available
> controller pointer directly.
> 
> Signed-off-by: John Garry <[email protected]>
> 
> diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c
> index 664216eece4a6..d5a8f375953bc 100644
> --- a/drivers/nvme/host/ioctl.c
> +++ b/drivers/nvme/host/ioctl.c
> @@ -699,7 +699,7 @@ static int nvme_ns_head_ctrl_ioctl(struct nvme_ns *ns, unsigned int cmd,
>   
>   	nvme_get_ctrl(ns->ctrl);
>   	srcu_read_unlock(&head->srcu, srcu_idx);
> -	ret = nvme_ctrl_ioctl(ns->ctrl, cmd, argp, open_for_write);
> +	ret = nvme_ctrl_ioctl(ctrl, cmd, argp, open_for_write);
>   
>   	nvme_put_ctrl(ctrl);
>   	return ret;

Reviewed-by: Hannes Reinecke <[email protected]>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
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