linux-hardening - Re: [PATCH] nvmet-fc: Annotate struct nvmet_fc_tgt_queue with __counted

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Message-ID: <8338ab4d-1c43-5530-ccf5-1bf808faaaef@nvidia.com>
Date: Wed, 4 Oct 2023 06:33:37 +0000
From: Chaitanya Kulkarni <chaitanyak@...dia.com>
To: Kees Cook <keescook@...omium.org>, James Smart <james.smart@...adcom.com>
CC: Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
	Chaitanya Kulkarni <chaitanyak@...dia.com>, "linux-nvme@...ts.infradead.org"
	<linux-nvme@...ts.infradead.org>, "Gustavo A. R. Silva"
	<gustavoars@...nel.org>, Nathan Chancellor <nathan@...nel.org>, Nick
 Desaulniers <ndesaulniers@...gle.com>, Tom Rix <trix@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>,
	"llvm@...ts.linux.dev" <llvm@...ts.linux.dev>
Subject: Re: [PATCH] nvmet-fc: Annotate struct nvmet_fc_tgt_queue with
 __counted_by

On 10/3/23 16:25, 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 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 nvmet_fc_tgt_queue.
>
> Cc: James Smart <james.smart@...adcom.com>
> Cc: Christoph Hellwig <hch@....de>
> Cc: Sagi Grimberg <sagi@...mberg.me>
> Cc: Chaitanya Kulkarni <kch@...dia.com>
> Cc: linux-nvme@...ts.infradead.org
> Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci [1]
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
>   

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@...dia.com>

-ck