netdev - Re: [RFC PATCH bpf-next 3/4] bpf: add bpf

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Message-ID: <Ysv+q4VTWPr9wyxn@krava>
Date:   Mon, 11 Jul 2022 12:42:51 +0200
From:   Jiri Olsa <olsajiri@...il.com>
To:     Artem Savkov <asavkov@...hat.com>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>, bpf@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: [RFC PATCH bpf-next 3/4] bpf: add bpf_panic() helper

On Mon, Jul 11, 2022 at 10:32:19AM +0200, Artem Savkov wrote:

SNIP

> diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
> index 4423874b5da4..e2e2c4de44ee 100644
> --- a/tools/include/uapi/linux/bpf.h
> +++ b/tools/include/uapi/linux/bpf.h
> @@ -3927,6 +3927,12 @@ union bpf_attr {
>   *	Return
>   *		The 64 bit jiffies
>   *
> + * void bpf_panic(const char *msg)
> + *	Description
> + *		Make the kernel panic immediately
> + *	Return
> + *		void
> + *
>   * long bpf_read_branch_records(struct bpf_perf_event_data *ctx, void *buf, u32 size, u64 flags)
>   *	Description
>   *		For an eBPF program attached to a perf event, retrieve the
> @@ -5452,6 +5458,7 @@ union bpf_attr {
>  	FN(tcp_send_ack),		\
>  	FN(send_signal_thread),		\
>  	FN(jiffies64),			\
> +	FN(panic),			\
>  	FN(read_branch_records),	\
>  	FN(get_ns_current_pid_tgid),	\
>  	FN(xdp_output),			\

new helper needs to be added at the end of the list

jirka