linux-kernel - Re: [PATCH] ipvlan: Remove NULL check before dev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230511085453.25ef33fc@hermes.local>
Date:   Thu, 11 May 2023 08:54:53 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Yang Li <yang.lee@...ux.alibaba.com>
Cc:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Abaci Robot <abaci@...ux.alibaba.com>
Subject: Re: [PATCH] ipvlan: Remove NULL check before dev_{put, hold}

On Thu, 11 May 2023 15:21:19 +0800
Yang Li <yang.lee@...ux.alibaba.com> wrote:

> The call netdev_{put, hold} of dev_{put, hold} will check NULL,
> so there is no need to check before using dev_{put, hold},
> remove it to silence the warning:
> 
> ./drivers/net/ipvlan/ipvlan_core.c:559:3-11: WARNING: NULL check before dev_{put, hold} functions is not needed.
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4930
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>

Maybe add new coccinelle script for this? scripts/free/dev_hold.cocci?