linux-hardening - Re: [PATCH] ALSA: hda: Annotate struct hda_conn_list with __counted

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Date: Sat, 23 Sep 2023 12:37:26 +0200
From: Takashi Iwai <tiwai@...e.de>
To: Kees Cook <keescook@...omium.org>
Cc: Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Cezary Rojewski <cezary.rojewski@...el.com>,
	alsa-devel@...a-project.org,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Tom Rix <trix@...hat.com>,
	Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
	Jason Montleon <jmontleo@...hat.com>,
	linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH] ALSA: hda: Annotate struct hda_conn_list with __counted_by

On Fri, 22 Sep 2023 19:50:42 +0200,
Kees Cook wrote:
> 
> Prepare for the coming implementation by GCC and Clang of the __counted_by
> attribute. Flexible array members annotated with __counted_by can have
> their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
> (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
> 
> As found with Coccinelle[1], add __counted_by for struct hda_conn_list.
> 
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
> 
> Cc: Jaroslav Kysela <perex@...ex.cz>
> Cc: Takashi Iwai <tiwai@...e.com>
> Cc: Cezary Rojewski <cezary.rojewski@...el.com>
> Cc: alsa-devel@...a-project.org
> Signed-off-by: Kees Cook <keescook@...omium.org>

Applied now.  Thanks.


Takashi