From: Jakub Kicinski <kuba@kernel.org>
To: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Denis Kirjanov <kda@linux-powerpc.org>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH][next] net: sundance: Replace one-element array with non-array object
Date: Fri, 4 Feb 2022 19:40:13 -0800 [thread overview]
Message-ID: <20220204194013.1204e1b3@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <20220204232906.GA442985@embeddedor>
On Fri, 4 Feb 2022 17:29:06 -0600 Gustavo A. R. Silva wrote:
> It seems this one-element array is not actually being used as an
> array of variable size, so we can just replace it with just a
> non-array object of type struct desc_frag and refactor a bit the
> rest of the code.
>
> This helps with the ongoing efforts to globally enable -Warray-bounds
> and get us closer to being able to tighten the FORTIFY_SOURCE routines
> on memcpy().
>
> This issue was found with the help of Coccinelle and audited and fixed,
> manually.
>
> [1] https://en.wikipedia.org/wiki/Flexible_array_member
> [2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays
>
> Link: https://github.com/KSPP/linux/issues/79
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
prev parent reply other threads:[~2022-02-05 3:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-04 23:29 [PATCH][next] net: sundance: Replace one-element array with non-array object Gustavo A. R. Silva
2022-02-05 3:40 ` Jakub Kicinski [this message]
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