linux-hardening - Re: [PATCH][next] usb: gadget: s3c-hsudc: Use struct_size() in devm

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Message-ID: <87k0o17p6l.fsf@kernel.org>
Date:   Fri, 14 May 2021 10:24:50 +0300
From:   Felipe Balbi <balbi@...nel.org>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] usb: gadget: s3c-hsudc: Use struct_size() in
 devm_kzalloc()

"Gustavo A. R. Silva" <gustavoars@...nel.org> writes:

> Make use of the struct_size() helper 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.
>
> This code was detected with the help of Coccinelle and, audited and
> fixed manually.
>
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Acked-by: Felipe Balbi <balbi@...nel.org>

-- 
balbi

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