linux-hardening - Re: [PATCH] libata: Annotate struct ata_cpr_log with __counted

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Message-ID: <0981d982-45db-d069-e26b-801b67ad1ae3@kernel.org>
Date: Mon, 25 Sep 2023 09:03:29 +0200
From: Damien Le Moal <dlemoal@...nel.org>
To: Kees Cook <keescook@...omium.org>
Cc: linux-ide@...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] libata: Annotate struct ata_cpr_log with __counted_by

On 2023/09/22 19:52, 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 ata_cpr_log.
> 
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
> 
> Cc: Damien Le Moal <dlemoal@...nel.org>
> Cc: linux-ide@...r.kernel.org
> Signed-off-by: Kees Cook <keescook@...omium.org>

Applied to for-6.7. Thanks !

-- 
Damien Le Moal
Western Digital Research