netdev - Re: [PATCH net-next v2] sections: global data can be in .bss

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: <CAK8P3a3eKS6vvMmvXm402VGezqyBjbONuLTcXVS2fgJmrP-hOg@mail.gmail.com>
Date:   Mon, 22 Nov 2021 15:39:17 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Antoine Tenart <atenart@...nel.org>
Cc:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Networking <netdev@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        jonathon.reinhart@...il.com, Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH net-next v2] sections: global data can be in .bss

On Mon, Nov 22, 2021 at 3:24 PM Antoine Tenart <atenart@...nel.org> wrote:
>
> When checking an address is located in a global data section also check
> for the .bss section as global variables initialized to 0 can be in
> there (-fzero-initialized-in-bss).
>
> This was found when looking at ensure_safe_net_sysctl which was failing
> to detect non-init sysctl pointing to a global data section when the
> data was in the .bss section.
>
> Signed-off-by: Antoine Tenart <atenart@...nel.org>
> Acked-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
> ---
>
> A few remarks:
>
> - This still targets net-next but I added Arnd if he prefers to take it
>   through the 'asm-generic' tree, now that is_kernel_core_data is in
>   include/asm-generic/.

I have nothing else for asm-generic at the moment, please take
this through net-next.

Acked-by: Arnd Bergmann <arnd@...db.de>