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

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Message-ID: <20250504095041.GAaBc4cRpKHJvo5fRE@fat_crate.local>
Date: Sun, 4 May 2025 11:50:41 +0200
From: Borislav Petkov <bp@...en8.de>
To: Ingo Molnar <mingo@...nel.org>
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)

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

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

View attachment "boot.log" of type "text/plain" (59052 bytes)

View attachment ".config" of type "text/plain" (147299 bytes)