linux-kernel - Re: [PATCH] x86/Kconfig: make CFI_AUTO

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 for Android: free password hash cracker in your pocket

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

Message-ID: <CANiq72=k+tZ3ACEB5k9qwJ8ZYu-dXkA3=Lisg1b8ze-2D0STog@mail.gmail.com>
Date: Thu, 10 Apr 2025 15:21:44 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Paweł Anikiel <panikiel@...gle.com>, 
	Sami Tolvanen <samitolvanen@...gle.com>, Kees Cook <kees@...nel.org>, 
	Alex Gaynor <alex.gaynor@...il.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, Ingo Molnar <mingo@...hat.com>, 
	Josh Poimboeuf <jpoimboe@...nel.org>, Masahiro Yamada <masahiroy@...nel.org>, 
	Miguel Ojeda <ojeda@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Alice Ryhl <aliceryhl@...gle.com>, 
	Nathan Chancellor <nathan@...nel.org>, x86@...nel.org, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org
Subject: Re: [PATCH] x86/Kconfig: make CFI_AUTO_DEFAULT depend on !RUST

On Thu, Apr 10, 2025 at 3:09 PM Peter Zijlstra <peterz@...radead.org> wrote:
>
> Miguel, I cannot find this code in the kernel tree. Is this again
> because Rust is not free-standing and relies on external code?

Yes, this comes from the `core` standard library. If it requires a
change, then it needs to be fixed upstream.

> Can you please fix that. Building against external code that is not
> under our control is a problem.

The only way to fix it would be to vendor the standard library, for
each Rust compiler version -- and there is one new every 6 weeks.
Thus, quite a few copies of it. Or keep patches (one per version) that
we apply on the fly.

Cheers,
Miguel