linux-kernel - Re: [PATCH 1/1] Compiler Attributes: disable __counted

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: <173203718634.3118906.4631874727014346327.b4-ty@kernel.org>
Date: Tue, 19 Nov 2024 09:26:27 -0800
From: Kees Cook <kees@...nel.org>
To: Jan Hendrik Farr <kernel@...rr.cc>
Cc: Kees Cook <kees@...nel.org>,
	nathan@...nel.org,
	ojeda@...nel.org,
	ndesaulniers@...gle.com,
	morbo@...gle.com,
	justinstitt@...gle.com,
	thorsten.blum@...lux.com,
	ardb@...nel.org,
	oliver.sang@...el.com,
	gustavoars@...nel.org,
	kent.overstreet@...ux.dev,
	arnd@...db.de,
	gregkh@...uxfoundation.org,
	akpm@...ux-foundation.org,
	tavianator@...ianator.com,
	linux-hardening@...r.kernel.org,
	llvm@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH 1/1] Compiler Attributes: disable __counted_by for clang < 19.1.3

On Tue, 29 Oct 2024 15:00:36 +0100, Jan Hendrik Farr wrote:
> This patch disables __counted_by for clang versions < 19.1.3 because
> of the two issues listed below. It does this by introducing
> CONFIG_CC_HAS_COUNTED_BY.
> 
> 1. clang < 19.1.2 has a bug that can lead to __bdos returning 0:
> https://github.com/llvm/llvm-project/pull/110497
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] Compiler Attributes: disable __counted_by for clang < 19.1.3
      https://git.kernel.org/kees/c/f06e108a3dc5

Take care,

-- 
Kees Cook