linux-kernel - Re: New warnings with gcc9

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: <CANiq72mcSYZK6QNBf6Skw7zv5Qu31evGs_fZTAzifFS1mkHOoA@mail.gmail.com>
Date:   Wed, 23 Jan 2019 19:11:59 +0100
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Laura Abbott <labbott@...hat.com>, Jessica Yu <jeyu@...nel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: New warnings with gcc9

On Wed, Jan 23, 2019 at 6:17 PM Miguel Ojeda
<miguel.ojeda.sandonis@...il.com> wrote:
>
> Hi Laura,
>
> On Wed, Jan 23, 2019 at 4:27 PM Laura Abbott <labbott@...hat.com> wrote:
> >
> > There's also some missing attribute warnings. The majority are caused by a
> > missing attribute in module_init/module_exit
> >
> > BUILDSTDERR: In file included from drivers/scsi/hptiop.c:18:
> > BUILDSTDERR: ./include/linux/module.h:132:6: warning: 'init_module' specifies less restrictive attribute than its target 'hptiop_module_init': 'cold' [-Wmissing-attributes]
> > BUILDSTDERR:   132 |  int init_module(void) __attribute__((alias(#initfn)));
> > BUILDSTDERR:       |      ^~~~~~~~~~~
> > BUILDSTDERR: drivers/scsi/hptiop.c:1704:1: note: in expansion of macro 'module_init'
> > BUILDSTDERR:  1704 | module_init(hptiop_module_init);
> > BUILDSTDERR:       | ^~~~~~~~~~~
> > BUILDSTDERR: drivers/scsi/hptiop.c:1692:19: note: 'init_module' target declared here
> > BUILDSTDERR:  1692 | static int __init hptiop_module_init(void)
> > BUILDSTDERR:       |
>
> I have been discussing these new -Wmissing-attributes warnings with
> the author, Martin Sebor. There is a new copy() attribute that we may
> take advantage of, but I will send the patch I have since you already
> found this :-)

Sent -- since someone asked me for it, here it is the reference:

  https://lore.kernel.org/lkml/20190123173707.GA16603@gmail.com/

Cheers,
Miguel