linux-kernel - Re: [PATCH v5] ping: Check return value of function 'ping_queue_rcv

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Message-ID: <ceb72a32-e55b-febe-0331-79a7cf6e7d66@gmail.com>
Date:   Thu, 10 Jun 2021 21:37:45 -0600
From:   David Ahern <dsahern@...il.com>
To:     Zheng Yongjun <zhengyongjun3@...wei.com>, davem@...emloft.net,
        yoshfuji@...ux-ipv6.org, dsahern@...nel.org, kuba@...nel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] ping: Check return value of function
 'ping_queue_rcv_skb'

On 6/9/21 7:41 PM, Zheng Yongjun wrote:
> Function 'ping_queue_rcv_skb' not always return success, which will
> also return fail. If not check the wrong return value of it, lead to function
> `ping_rcv` return success.
> 
> Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
> ---
> v2:
> - use rc as return value to make code look cleaner
> v3:
> - delete unnecessary braces {}
> v4:
> - put variable 'rc' declaration at the beginning of function
> v5:
> - don/t print unneed debuginfo in the right path
>  net/ipv4/ping.c | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 

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