netdev - Re: [PATCH] netfilter: initialize 'ret' variable

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: <3p77q27-8495-sss2-3r38-r1448nqsoop@vanv.qr>
Date:   Fri, 2 Dec 2022 10:18:44 +0100 (CET)
From:   Jan Engelhardt <jengelh@...i.de>
To:     Al Viro <viro@...iv.linux.org.uk>
cc:     Li Qiong <liqiong@...china.com>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, coreteam@...filter.org,
        Yu Zhe <yuzhe@...china.com>
Subject: Re: [PATCH] netfilter: initialize 'ret' variable

On Friday 2022-12-02 08:13, Al Viro wrote:

>On Fri, Dec 02, 2022 at 03:03:31PM +0800, Li Qiong wrote:
>> The 'ret' should need to be initialized to 0, in case
>> return a uninitialized value.
>
>Why is 0 the right value?  And which case would it be?
>We clearly need to know that to figure out which return
>value would be correct for it...

Judging from the error-handling branches,
it should be ret = NF_ACCEPT.