linux-hardening - Re: [PATCH] xtensa: Implement "current_stack

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 PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

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

Date:   Wed, 23 Feb 2022 22:22:59 -0800
From:   Max Filippov <jcmvbkbc@...il.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     Chris Zankel <chris@...kel.net>, Marc Zyngier <maz@...nel.org>,
        "open list:TENSILICA XTENSA PORT (xtensa)" 
        <linux-xtensa@...ux-xtensa.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH] xtensa: Implement "current_stack_pointer"

On Wed, Feb 23, 2022 at 10:05 PM Kees Cook <keescook@...omium.org> wrote:
>
> To follow the existing per-arch conventions replace open-coded uses
> of asm "sp" as "current_stack_pointer". This will let it be used in
> non-arch places (like HARDENED_USERCOPY).
>
> Cc: Chris Zankel <chris@...kel.net>
> Cc: Max Filippov <jcmvbkbc@...il.com>
> Cc: Marc Zyngier <maz@...nel.org>
> Cc: linux-xtensa@...ux-xtensa.org
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
>  arch/xtensa/Kconfig                  | 1 +
>  arch/xtensa/include/asm/current.h    | 2 ++
>  arch/xtensa/include/asm/stacktrace.h | 2 +-
>  arch/xtensa/kernel/irq.c             | 3 +--
>  4 files changed, 5 insertions(+), 3 deletions(-)

Acked-by: Max Filippov <jcmvbkbc@...il.com>

-- 
Thanks.
-- Max