linux-hardening - Re: [PATCH 06/10] x86/tdx: Mark message.str as nonstring

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Message-ID: <CAHp75Vf4R73_GMNvsEWd3nyUKM8UEP22=9umArVsHYOA=dycWg@mail.gmail.com>
Date: Fri, 7 Feb 2025 14:09:12 +0200
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Kees Cook <kees@...nel.org>
Cc: Dave Hansen <dave.hansen@...el.com>, Andy Shevchenko <andy@...nel.org>, 
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>, Dave Hansen <dave.hansen@...ux.intel.com>, 
	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, x86@...nel.org, 
	"H. Peter Anvin" <hpa@...or.com>, linux-coco@...ts.linux.dev, 
	Sathya Prakash <sathya.prakash@...adcom.com>, 
	Sreekanth Reddy <sreekanth.reddy@...adcom.com>, 
	Suganath Prabu Subramani <suganath-prabu.subramani@...adcom.com>, 
	Kashyap Desai <kashyap.desai@...adcom.com>, Sumit Saxena <sumit.saxena@...adcom.com>, 
	"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>, 
	"Martin K. Petersen" <martin.petersen@...cle.com>, Nilesh Javali <njavali@...vell.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Alexey Dobriyan <adobriyan@...il.com>, 
	Sven Eckelmann <sven@...fation.org>, Tadeusz Struk <tadeusz.struk@...aro.org>, 
	kernel test robot <lkp@...el.com>, Erick Archer <erick.archer@...look.com>, 
	Dmitry Antipov <dmantipov@...dex.ru>, Ryusuke Konishi <konishi.ryusuke@...il.com>, 
	Luc Van Oostenryck <luc.vanoostenryck@...il.com>, linux-kernel@...r.kernel.org, 
	MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org, 
	mpi3mr-linuxdrv.pdl@...adcom.com, GR-QLogic-Storage-Upstream@...vell.com, 
	linux-hardening@...r.kernel.org, linux-nilfs@...r.kernel.org
Subject: Re: [PATCH 06/10] x86/tdx: Mark message.str as nonstring

On Fri, Feb 7, 2025 at 4:37 AM Kees Cook <kees@...nel.org> wrote:
> On Thu, Feb 06, 2025 at 05:12:11PM -0800, Dave Hansen wrote:
> > On 2/6/25 17:00, Kees Cook wrote:

...

> > So, the patch itself makes sense. But it does end up looking kinda
> > funky. We call it a "str"ing and then annotate it as not a string.
>
> Yeah, this is true all over the place. It's a string, just not a
> NUL-terminated string: *sob*

Maybe call it respectively, e.g., __nontermstr ?

-- 
With Best Regards,
Andy Shevchenko