linux-hardening - Re: [PATCH][next] net_sched: Use struct_size() and flex_array

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Message-ID: <20210927175604.66ec0cff@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 27 Sep 2021 17:56:04 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] net_sched: Use struct_size() and
 flex_array_size() helpers

On Mon, 27 Sep 2021 17:18:49 -0500 Gustavo A. R. Silva wrote:
> Make use of the struct_size() and flex_array_size() helpers instead of
> an open-coded version, in order to avoid any potential type mistakes
> or integer overflows that, in the worse scenario, could lead to heap
> overflows.
> 
> Link: https://github.com/KSPP/linux/issues/160
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Does not apply to net-next, please rebase & resend. Thanks!