netdev - Re: [PATCH net-next v4] net: openvswitch: Check vport netdev name

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Message-ID: <20240422173850.2222305f@kernel.org>
Date: Mon, 22 Apr 2024 17:38:50 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Jun Gu <jun.gu@...ystack.cn>
Cc: dev@...nvswitch.org, echaudro@...hat.com, linux-kernel@...r.kernel.org,
 netdev@...r.kernel.org
Subject: Re: [PATCH net-next v4] net: openvswitch: Check vport netdev name

On Fri, 19 Apr 2024 14:14:25 +0800 Jun Gu wrote:
>  	vport->dev = dev_get_by_name(ovs_dp_get_net(vport->dp), name);
> -	if (!vport->dev) {
> +	/* Ensure that the device exists and that the provided
> +	 * name is not one of its aliases.
> +	 */
> +	if (!vport->dev || strcmp(name, ovs_vport_name(vport))) {
>  		err = -ENODEV;
>  		goto error_free_vport;
>  	}

Sorry I applied this before I realised that it's buggy.
dev_get_by_name() will give you a reference on the device.
You must free it, so the error handling is different.
Please follow up ASAP to fix that.