linux-kernel - Re: [PATCH] bnx2: Pass allocation size to build

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Date:   Wed, 19 Oct 2022 17:02:55 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Rasesh Mody <rmody@...vell.com>, GR-Linux-NIC-Dev@...vell.com,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] bnx2: Pass allocation size to build_skb()

On Tue, 18 Oct 2022 01:59:29 -0700 Kees Cook wrote:
> In preparation for requiring that build_skb() have a non-zero size
> argument, pass the actual data allocation size explicitly into
> build_skb().

build_skb(, 0) has the special meaning of "head buf has been kmalloc'd",
rather than alloc_page(). Was this changed and I missed it?