netdev - Re: [PATCH v5] net: ip, diag -- Add diag interface for raw sockets

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]

Date:   Wed, 28 Sep 2016 06:02:11 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Cyrill Gorcunov <gorcunov@...il.com>
Cc:     Jamal Hadi Salim <jhs@...atatu.com>,
        David Ahern <dsa@...ulusnetworks.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, David Miller <davem@...emloft.net>,
        kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org,
        kaber@...sh.net, avagin@...nvz.org, stephen@...workplumber.org
Subject: Re: [PATCH v5] net: ip, diag -- Add diag interface for raw sockets

On Wed, 2016-09-28 at 05:57 -0700, Eric Dumazet wrote:

> Note that some programs could fail to compile with the added union
> anyway.
> 
> Some gcc versions are unable to compile a static init with an union
> 
> struct inet_diag_req_v2 foo = { .pad = 0, sdiag_family = AF_INET, };
> 
> When I cooked my recent fq commit I simply removed a pad and replaced
> it :
> 
> git show fefa569a9d4bc4 -- include

This is a bit different of course, since struct tc_fq_qd_stats is only
one way : Kernel produces the content and gives it to user space.

User space should probably not need to initialize such a structure, but
who knows what a programmer can write ;)