linux-kernel - Re: [PATCH v9 02/10] bpf: Allow kfuncs to be used in LSM programs

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Message-ID: <bf912249-a91e-77a5-0cc7-de5f85c6a6cd@iogearbox.net>
Date:   Tue, 9 Aug 2022 23:53:48 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Roberto Sassu <roberto.sassu@...wei.com>, ast@...nel.org,
        andrii@...nel.org, martin.lau@...ux.dev, song@...nel.org,
        yhs@...com, john.fastabend@...il.com, kpsingh@...nel.org,
        sdf@...gle.com, haoluo@...gle.com, jolsa@...nel.org,
        corbet@....net, dhowells@...hat.com, jarkko@...nel.org,
        rostedt@...dmis.org, mingo@...hat.com, paul@...l-moore.com,
        jmorris@...ei.org, serge@...lyn.com, shuah@...nel.org
Cc:     bpf@...r.kernel.org, linux-doc@...r.kernel.org,
        keyrings@...r.kernel.org, linux-security-module@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 02/10] bpf: Allow kfuncs to be used in LSM programs

On 8/9/22 3:45 PM, Roberto Sassu wrote:
> From: KP Singh <kpsingh@...nel.org>
> 
> In preparation for the addition of bpf_getxattr kfunc.

Given this is taken out of context and the series is not about bpf_getxattr,
this patch should have a better commit description.

> Signed-off-by: KP Singh <kpsingh@...nel.org>

Please also append your SoB then [0].

   [0] https://www.kernel.org/doc/html/latest/process/submitting-patches.html#developer-s-certificate-of-origin-1-1

> ---
>   kernel/bpf/btf.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
> index d3e4c86b8fcd..67dfc728fbf8 100644
> --- a/kernel/bpf/btf.c
> +++ b/kernel/bpf/btf.c
> @@ -7244,6 +7244,7 @@ static int bpf_prog_type_to_kfunc_hook(enum bpf_prog_type prog_type)
>   	case BPF_PROG_TYPE_STRUCT_OPS:
>   		return BTF_KFUNC_HOOK_STRUCT_OPS;
>   	case BPF_PROG_TYPE_TRACING:
> +	case BPF_PROG_TYPE_LSM:
>   		return BTF_KFUNC_HOOK_TRACING;
>   	case BPF_PROG_TYPE_SYSCALL:
>   		return BTF_KFUNC_HOOK_SYSCALL;
>