linux-kernel - Re: [PATCH] selftests/ftrace: Choose target function for filter test from samples

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Date:   Mon, 20 Mar 2023 13:58:33 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc:     linux-trace-kernel@...r.kernel.org,
        Naresh Kamboju <naresh.kamboju@...aro.org>,
        linux-kernel@...r.kernel.org,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        lkft-triage@...ts.linaro.org,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        Anders Roxell <anders.roxell@...aro.org>
Subject: Re: [PATCH] selftests/ftrace: Choose target function for filter
 test from samples

On Sun, 19 Mar 2023 11:53:32 +0900
"Masami Hiramatsu (Google)" <mhiramat@...nel.org> wrote:

> From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
> 
> Since the event-filter-function.tc expects the 'exit_mmap()' directly
> calls 'kmem_cache_free()', this is vulnerable to code modifications.
> 
> Choose the target function for the filter test from the sample
> event data so that it can keep test running correctly even if the caller
> function name will be changed.
> 
> Link: https://lore.kernel.org/all/CA+G9fYtF-XEKi9YNGgR=Kf==7iRb2FrmEC7qtwAeQbfyah-UhA@mail.gmail.com/
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> Fixes: 7f09d639b8c4 ("tracing/selftests: Add test for event filtering on function name")
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>

Acked-by: Steven Rostedt (Google) <rostedt@...dmis.org>

-- Steve