linux-kernel - Re: [PATCH bpf-next 2/2] bpf: Add show_fdinfo for kprobe

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Message-ID: <CAADnVQLbpO7PED01OVZXTLib_hBYzwpC5hFyR_WMCCx8obR1Hw@mail.gmail.com>
Date: Thu, 12 Jun 2025 09:01:32 -0700
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: Tao Chen <chen.dylane@...ux.dev>
Cc: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
	Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>, Eduard <eddyz87@...il.com>, 
	Song Liu <song@...nel.org>, Yonghong Song <yonghong.song@...ux.dev>, 
	John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, 
	Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, 
	Matt Bobrowski <mattbobrowski@...gle.com>, Steven Rostedt <rostedt@...dmis.org>, 
	Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, 
	bpf <bpf@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, 
	linux-trace-kernel <linux-trace-kernel@...r.kernel.org>
Subject: Re: [PATCH bpf-next 2/2] bpf: Add show_fdinfo for kprobe_multi

On Thu, Jun 12, 2025 at 4:56 AM Tao Chen <chen.dylane@...ux.dev> wrote:
>
> Show kprobe_multi link info with fdinfo, the info as follows:
>
> link_type:      kprobe_multi
> link_id:        4
> prog_tag:       279dd9c09dfbc757
> prog_id:        30
> type:   kprobe_multi
> func_cnt:       8
> missed: 0
> addr:   0xffffffff81ecb1e0

fdinfo shouldn't print kernel addresses.
It defeats kaslr

pw-bot: cr