linux-kernel - Re: [PATCH net] net: bridge: vlan: fix error return code in __vlan

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Date:   Fri, 4 Dec 2020 12:47:07 +0200
From:   Nikolay Aleksandrov <nikolay@...dia.com>
To:     Zhang Changzhong <zhangchangzhong@...wei.com>,
        Roopa Prabhu <roopa@...dia.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net] net: bridge: vlan: fix error return code in
 __vlan_add()

On 04/12/2020 10:48, Zhang Changzhong wrote:
> Fix to return a negative error code from the error handling
> case instead of 0, as done elsewhere in this function.
> 
> Fixes: f8ed289fab84 ("bridge: vlan: use br_vlan_(get|put)_master to deal with refcounts")
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
> ---
>  net/bridge/br_vlan.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
> index 3e493eb..08c7741 100644
> --- a/net/bridge/br_vlan.c
> +++ b/net/bridge/br_vlan.c
> @@ -266,8 +266,10 @@ static int __vlan_add(struct net_bridge_vlan *v, u16 flags,
>  		}
>  
>  		masterv = br_vlan_get_master(br, v->vid, extack);
> -		if (!masterv)
> +		if (!masterv) {
> +			err = -ENOMEM;
>  			goto out_filt;
> +		}
>  		v->brvlan = masterv;
>  		if (br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)) {
>  			v->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);
> 

Acked-by: Nikolay Aleksandrov <nikolay@...dia.com>