linux-hardening - Re: [PATCH] firewire: Annotate struct fw_node with __counted

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Date: Sun, 24 Sep 2023 21:54:51 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: Kees Cook <keescook@...omium.org>
Cc: linux1394-devel@...ts.sourceforge.net,
	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] firewire: Annotate struct fw_node with __counted_by

Hi,

On Fri, Sep 22, 2023 at 10:53:35AM -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 fw_node.
> 
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
> 
> Cc: Takashi Sakamoto <o-takashi@...amocchi.jp>
> Cc: linux1394-devel@...ts.sourceforge.net
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
>  drivers/firewire/core.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied to for-next branch, thanks.


Regards

Takashi Sakamoto