netdev - Re: [PATCH v2 bpf-next 2/7] bpf: avoid warning when re-casting __bpf_call_base into __bpf_call_base

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Message-ID: <e7c87b51-0fef-d0a8-a024-2f4c539f9d4e@fb.com>
Date:   Sun, 10 Jan 2021 20:03:26 -0800
From:   Yonghong Song <yhs@...com>
To:     Andrii Nakryiko <andrii@...nel.org>, <bpf@...r.kernel.org>,
        <netdev@...r.kernel.org>, <ast@...com>, <daniel@...earbox.net>
CC:     <kernel-team@...com>, Hao Luo <haoluo@...gle.com>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v2 bpf-next 2/7] bpf: avoid warning when re-casting
 __bpf_call_base into __bpf_call_base_args



On 1/8/21 2:09 PM, Andrii Nakryiko wrote:
> BPF interpreter uses extra input argument, so re-casts __bpf_call_base into
> __bpf_call_base_args. Avoid compiler warning about incompatible function
> prototypes by casting to void * first.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Fixes: 1ea47e01ad6e ("bpf: add support for bpf_call to interpreter")
> Signed-off-by: Andrii Nakryiko <andrii@...nel.org>

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