linux-kernel - Re: [PATCH bpf-next] bpf: Fix a verifier message for alloc size helper arg

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Message-ID: <8fd88ea5-5d71-056e-615c-de670f34ea7e@fb.com>
Date:   Tue, 12 Jan 2021 08:42:25 -0800
From:   Yonghong Song <yhs@...com>
To:     Brendan Jackman <jackmanb@...gle.com>, <bpf@...r.kernel.org>
CC:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Florent Revest <revest@...omium.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf-next] bpf: Fix a verifier message for alloc size
 helper arg



On 1/12/21 4:39 AM, Brendan Jackman wrote:
> The error message here is misleading, the argument will be rejected
> unless it is a known constant.
> 
> Signed-off-by: Brendan Jackman <jackmanb@...gle.com>

Okay, this is for bpf_ringbuf_reserve() helper where the size must be a 
constant.

Acked-by: Yonghong Song <yhs@...com>