linux-kernel - Re: [PATCH for-next v2] tracing/kprobes: Add symbol counting check when module loads

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Message-ID: <20240416004726.792b8158@rorschach.local.home>
Date: Tue, 16 Apr 2024 00:47:26 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux trace kernel
 <linux-trace-kernel@...r.kernel.org>, Andrii Nakryiko <andrii@...nel.org>,
 Francis Laniel <flaniel@...ux.microsoft.com>
Subject: Re: [PATCH for-next v2] tracing/kprobes: Add symbol counting check
 when module loads

On Mon, 15 Apr 2024 18:40:23 +0900
"Masami Hiramatsu (Google)" <mhiramat@...nel.org> wrote:

> Check the number of probe target symbols in the target module when
> the module is loaded. If the probe is not on the unique name symbols
> in the module, it will be rejected at that point.
> 
> Note that the symbol which has a unique name in the target module,
> it will be accepted even if there are same-name symbols in the
> kernel or other modules,

This says what it does, but doesn't explain why it is doing it.
What's the purpose of this patch?

-- Steve