linux-kernel - Re: [PATCH v4 1/2] Compiler Attributes: Add __counted_by

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Message-Id: <176867651549.3159467.11181679674842979666.b4-ty@kernel.org>
Date: Sat, 17 Jan 2026 11:01:58 -0800
From: Kees Cook <kees@...nel.org>
To: Bill Wendling <morbo@...gle.com>
Cc: Kees Cook <kees@...nel.org>,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
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	Miguel Ojeda <ojeda@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
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	Tejun Heo <tj@...nel.org>,
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	Michal Koutný <mkoutny@...e.com>,
	Shakeel Butt <shakeel.butt@...ux.dev>,
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	Brian Gerst <brgerst@...il.com>,
	Masahiro Yamada <masahiroy@...nel.org>,
	linux-kernel@...r.kernel.org,
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	Douglas Anderson <dianders@...omium.org>,
	linux-kbuild@...r.kernel.org
Subject: Re: [PATCH v4 1/2] Compiler Attributes: Add __counted_by_ptr macro

On Fri, 16 Jan 2026 00:57:57 +0000, Bill Wendling wrote:
> Introduce __counted_by_ptr(), which works like __counted_by(), but for
> pointer struct members.
> 
> struct foo {
> 	int a, b, c;
> 	char *buffer __counted_by_ptr(bytes);
> 	short nr_bars;
> 	struct bar *bars __counted_by_ptr(nr_bars);
> 	size_t bytes;
> };
> 
> [...]

Applied to for-next/hardening, thanks!

[1/2] Compiler Attributes: Add __counted_by_ptr macro
      https://git.kernel.org/kees/c/150a04d817d8

Take care,

-- 
Kees Cook