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From: Martin KaFai Lau <kafai@fb.com>
To: Liu Jian <liujian56@huawei.com>
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
	songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com,
	kpsingh@kernel.org, davem@davemloft.net, kuba@kernel.org,
	sdf@google.com, netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: Re: [PATCH bpf-next] net: Use skb->len to check the validity of the parameters in bpf_skb_load_bytes
Date: Tue, 15 Mar 2022 12:58:22 -0700	[thread overview]
Message-ID: <20220315195822.sonic5avyizrufsv@kafai-mbp.dhcp.thefacebook.com> (raw)
In-Reply-To: <20220315123916.110409-1-liujian56@huawei.com>

On Tue, Mar 15, 2022 at 08:39:16PM +0800, Liu Jian wrote:
> The data length of skb frags + frag_list may be greater than 0xffff,
> so here use skb->len to check the validity of the parameters.
What is the use case that needs to look beyond 0xffff ?

  reply	other threads:[~2022-03-15 19:59 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-15 12:39 [PATCH bpf-next] net: Use skb->len to check the validity of the parameters in bpf_skb_load_bytes Liu Jian
2022-03-15 19:58 ` Martin KaFai Lau [this message]
2022-03-16  1:09   ` liujian (CE)
2022-03-16  4:00     ` John Fastabend
2022-03-16 13:08       ` liujian (CE)
2022-03-16 15:09         ` Stanislav Fomichev
2022-03-17 14:08           ` liujian (CE)

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