linux-kernel - Re: [PATCH][next] bpf: fix swapped arguments in calls to check_buffer

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Date:   Mon, 27 Jul 2020 14:39:14 -0700
From:   Yonghong Song <yhs@...com>
To:     Colin King <colin.king@...onical.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>,
        Andrii Nakryiko <andriin@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>, <netdev@...r.kernel.org>,
        <bpf@...r.kernel.org>
CC:     <kernel-janitors@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][next] bpf: fix swapped arguments in calls to
 check_buffer_access



On 7/27/20 10:54 AM, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> There are a couple of arguments of the boolean flag zero_size_allowed
> and the char pointer buf_info when calling to function check_buffer_access
> that are swapped by mistake. Fix these by swapping them to correct
> the argument ordering.
> 
> Addresses-Coverity: ("Array compared to 0")
> Fixes: afbf21dce668 ("bpf: Support readonly/readwrite buffers in verifier")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Thanks for the fix!
Acked-by: Yonghong Song <yhs@...com>