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Subject: Re: [PATCH net] ipv4: fix error return code in rtm_to_fib_config()
To:     Zhang Changzhong <zhangchangzhong@huawei.com>,
        "David S. Miller" <davem@davemloft.net>,
        Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
        Jakub Kicinski <kuba@kernel.org>
Cc:     netdev@vger.kernel.org, linux-kernel@vger.kernel.org
References: <1607071695-33740-1-git-send-email-zhangchangzhong@huawei.com>
From:   David Ahern <dsahern@gmail.com>
Message-ID: <d525d028-582d-2cea-5507-db43ee9f9fe3@gmail.com>
Date:   Fri, 4 Dec 2020 09:04:08 -0700
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On 12/4/20 1:48 AM, 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: d15662682db2 ("ipv4: Allow ipv6 gateway with ipv4 routes")
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
> ---
>  net/ipv4/fib_frontend.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
> index b87140a..cdf6ec5 100644
> --- a/net/ipv4/fib_frontend.c
> +++ b/net/ipv4/fib_frontend.c
> @@ -825,7 +825,7 @@ static int rtm_to_fib_config(struct net *net, struct sk_buff *skb,
>  	if (has_gw && has_via) {
>  		NL_SET_ERR_MSG(extack,
>  			       "Nexthop configuration can not contain both GATEWAY and VIA");
> -		goto errout;
> +		return -EINVAL;
>  	}
>  
>  	return 0;
> 

Thanks for the patch.

Reviewed-by: David Ahern <dsahern@kernel.org>