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

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Date:   Mon, 30 Oct 2023 09:59:18 -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] tracing/kprobes: Add symbol counting check
 when module loads

On Sun, 29 Oct 2023 12:10:46 +0900
"Masami Hiramatsu (Google)" <mhiramat@...nel.org> wrote:

> From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> 
> 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,
> 
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> ---
>  kernel/trace/trace_kprobe.c |  112 ++++++++++++++++++++++++++-----------------
>  1 file changed, 68 insertions(+), 44 deletions(-)

Reviewed-by: Steven Rosted (Google) <rostedt@...dmis.org>

-- Steve