From: Kees Cook <keescook@chromium.org>
To: Kalle Valo <kvalo@kernel.org>
Cc: linux-hardening@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
ath11k@lists.infradead.org, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 08/17] ath11k: Use memset_startat() for clearing queue descriptors
Date: Tue, 14 Dec 2021 09:05:37 -0800 [thread overview]
Message-ID: <202112140904.2D64E570@keescook> (raw)
In-Reply-To: <877dc7i3zc.fsf@codeaurora.org>
On Tue, Dec 14, 2021 at 05:46:31PM +0200, Kalle Valo wrote:
> Kalle Valo <kvalo@kernel.org> writes:
>
> > Kees Cook <keescook@chromium.org> writes:
> >
> >> In preparation for FORTIFY_SOURCE performing compile-time and run-time
> >> field bounds checking for memset(), avoid intentionally writing across
> >> neighboring fields.
> >>
> >> Use memset_startat() so memset() doesn't get confused about writing
> >> beyond the destination member that is intended to be the starting point
> >> of zeroing through the end of the struct. Additionally split up a later
> >> field-spanning memset() so that memset() can reason about the size.
> >>
> >> Cc: Kalle Valo <kvalo@codeaurora.org>
> >> Cc: "David S. Miller" <davem@davemloft.net>
> >> Cc: Jakub Kicinski <kuba@kernel.org>
> >> Cc: ath11k@lists.infradead.org
> >> Cc: linux-wireless@vger.kernel.org
> >> Cc: netdev@vger.kernel.org
> >> Signed-off-by: Kees Cook <keescook@chromium.org>
> >
> > What's the plan for this patch? I would like to take this via my ath
> > tree to avoid conflicts.
>
> Actually this has been already applied:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=ath-next&id=d5549e9a6b86
>
> Why are you submitting the same patch twice?
These are all part of a topic branch, and the cover letter mentioned
that a set of them have already been taken but haven't appeared in -next
(which was delayed).
Sorry for the confusion!
--
Kees Cook
next prev parent reply other threads:[~2021-12-14 17:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20211213223331.135412-1-keescook@chromium.org>
2021-12-13 22:33 ` [PATCH 02/17] net/mlx5e: Avoid field-overflowing memcpy() Kees Cook
2021-12-13 22:33 ` [PATCH 03/17] net/mlx5e: Use struct_group() for memcpy() region Kees Cook
2021-12-13 22:33 ` [PATCH 08/17] ath11k: Use memset_startat() for clearing queue descriptors Kees Cook
2021-12-14 6:02 ` Kalle Valo
2021-12-14 15:46 ` Kalle Valo
2021-12-14 17:05 ` Kees Cook [this message]
2021-12-16 13:50 ` Kalle Valo
2021-12-13 22:33 ` [PATCH 12/17] iw_cxgb4: Use memset_startat() for cpl_t5_pass_accept_rpl Kees Cook
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