linux-kernel - Re: [PATCH v7 3/4] atomic: Add alignment check to instrumented atomic operations

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] [day] [month] [year] [list]

Message-ID: <CAMuHMdXSXcxzhgfFyc3sBdyoJ4vq9sMpzLBLcZskqtZXdAjH+g@mail.gmail.com>
Date: Tue, 13 Jan 2026 08:56:01 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Finn Thain <fthain@...ux-m68k.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Peter Zijlstra <peterz@...radead.org>, 
	Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>, Boqun Feng <boqun.feng@...il.com>, 
	Gary Guo <gary@...yguo.net>, Mark Rutland <mark.rutland@....com>, linux-arch@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-m68k@...ts.linux-m68k.org, 
	Sasha Levin <sashal@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, 
	Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, 
	Ard Biesheuvel <ardb@...nel.org>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH v7 3/4] atomic: Add alignment check to instrumented atomic operations

Hi Finn,

On Tue, 13 Jan 2026 at 06:39, Finn Thain <fthain@...ux-m68k.org> wrote:
> From: Peter Zijlstra <peterz@...radead.org>
>
> Add a Kconfig option for debug builds which logs a warning when an
> instrumented atomic operation takes place that's misaligned.
> Some platforms don't trap for this.
>
> [ fthain: added __DISABLE_EXPORTS conditional and refactored as helper
> function. ]
>
> Cc: Sasha Levin <sashal@...nel.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: Dave Hansen <dave.hansen@...ux.intel.com>
> Cc: Ard Biesheuvel <ardb@...nel.org>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Link: https://lore.kernel.org/lkml/20250901093600.GF4067720@noisy.programming.kicks-ass.net/
> Link: https://lore.kernel.org/linux-next/df9fbd22-a648-ada4-fee0-68fe4325ff82@linux-m68k.org/
> Signed-off-by: Finn Thain <fthain@...ux-m68k.org>
>
> ---
> Checkpatch.pl says...
> ERROR: Missing Signed-off-by: line by nominal patch author 'Peter Ziljstra <peterz@...radead.org>'

Alternatively, you can credit Peter using

    Suggested-by: Peter Zijlstra <peterz@...radead.org>

just before the Link-header pointing to his suggestion.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds