linux-hardening - Re: [PATCH] media: v4l2-event: Annotate struct v4l2_subscribed_event with __counted

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Message-ID: <eeeb183e-f6ed-4158-8852-04da5e452d9b@xs4all.nl>
Date: Sat, 7 Oct 2023 11:21:26 +0200
From: Hans Verkuil <hverkuil-cisco@...all.nl>
To: Kees Cook <keescook@...omium.org>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: lijian <lijian@...ong.com>, linux-media@...r.kernel.org,
 Nathan Chancellor <nathan@...nel.org>,
 Nick Desaulniers <ndesaulniers@...gle.com>, Tom Rix <trix@...hat.com>,
 linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
 linux-hardening@...r.kernel.org
Subject: Re: [PATCH] media: v4l2-event: Annotate struct v4l2_subscribed_event
 with __counted_by

On 06/10/2023 22:28, Kees Cook wrote:
> On Fri, 22 Sep 2023 10:49:52 -0700, 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 v4l2_subscribed_event.
>> Additionally, since the element count member must be set before accessing
>> the annotated flexible array member, move its initialization earlier.
>>
>> [...]
> 
> Since this is a trivial change and it's been 2 week without further
> discussion, I'll snag this patch.

Ah, I picked this up for media as well. Same for the other patch.
You should have gotten an email from patchwork on Oct 3 that it was accepted.

I think I should be more pro-active and reply when I pick up patches from
non-media developers instead of relying on patchwork. It seems that it is
easy to miss emails from patchwork.

Regards,

	Hans

> 
> Applied to for-next/hardening, thanks!
> 
> [1/1] media: v4l2-event: Annotate struct v4l2_subscribed_event with __counted_by
>       https://git.kernel.org/kees/c/b1a20bbd4687
> 
> Take care,
>