linux-kernel - Re: drivers/nvme/host/auth.c:950 nvme_auth_init

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Date:   Fri, 23 Dec 2022 19:21:49 +0300
From:   Dan Carpenter <error27@...il.com>
To:     Christoph Hellwig <hch@....de>
Cc:     oe-kbuild@...ts.linux.dev, Sagi Grimberg <sagi@...mberg.me>,
        lkp@...el.com, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: drivers/nvme/host/auth.c:950 nvme_auth_init_ctrl() warn: missing
 error code? 'ret'

On Fri, Dec 23, 2022 at 04:47:54PM +0100, Christoph Hellwig wrote:
> diff --git a/drivers/nvme/host/auth.c b/drivers/nvme/host/auth.c
> index bb0abbe4491cdc..c808652966a94f 100644
> --- a/drivers/nvme/host/auth.c
> +++ b/drivers/nvme/host/auth.c
> @@ -943,16 +943,19 @@ int nvme_auth_init_ctrl(struct nvme_ctrl *ctrl)
>  	INIT_WORK(&ctrl->dhchap_auth_work, nvme_ctrl_auth_work);
>  	if (!ctrl->opts)
>  		return 0;
> -	ret = nvme_auth_generate_key(ctrl->opts->dhchap_secret,
> -			&ctrl->host_key);
> -	if (ret)
> -		return ret;
> -	ret = nvme_auth_generate_key(ctrl->opts->dhchap_ctrl_secret,
> -			&ctrl->ctrl_key);
> -	if (ret)
> +
> +	ctrl->host_key = nvme_auth_generate_key(ctrl->opts->dhchap_secret);
> +	if (IS_ERR(ctrl->host_key)) {
> +		ret = PTR_ERR(ctrl->host_key);
> +		goto out;
> +	}
> +	ctrl->ctrl_key = nvme_auth_generate_key(ctrl->opts->dhchap_ctrl_secret);
> +	if (IS_ERR(ctrl->ctrl_key)) {
> +		ret = PTR_ERR(ctrl->ctrl_key);
>  		goto err_free_dhchap_secret;
> +	}
>  
> -	if (!ctrl->opts->dhchap_secret && !ctrl->opts->dhchap_ctrl_secret)
> +	if (!ctrl->host_key && !ctrl->ctrl_key)
>  		return ret;

ret is uninitialized now.

regards,
dan carpenter