linux-hardening - Re: hardened_usercopy 32-bit (was: Re: [tip: x86/merge] x86/fpu: Make task

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Message-ID: <aBc5FNmf-pl6iypR@gmail.com>
Date: Sun, 4 May 2025 11:53:24 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Borislav Petkov <bp@...en8.de>
Cc: Kees Cook <kees@...nel.org>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-tip-commits@...r.kernel.org,
	Andy Lutomirski <luto@...nel.org>, Brian Gerst <brgerst@...il.com>,
	"Chang S. Bae" <chang.seok.bae@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: hardened_usercopy 32-bit (was: Re: [tip: x86/merge] x86/fpu:
 Make task_struct::thread constant size)


* Borislav Petkov <bp@...en8.de> wrote:

> On Sun, May 04, 2025 at 10:44:20AM +0200, Ingo Molnar wrote:
> > > Thx for the report, mind sending the exact .config that fails for you?
> > 
> > BTW., mind sending the full bootlog as well? I cannot reproduce it here 
> > with CONFIG_HARDENED_USERCOPY=y, so I suspect it's something about the 
> > build, HW or boot environment.
> 
> Attaching boot.log and .config.
> 
> Toolchain is:
> 
> gcc (Debian 13.2.0-25) 13.2.0

Thanks!

	Ingo