linux-kernel - Re: [PATCH 09/12] tools lib traceevent: Unregister handler when cfg80211 plugin unloaded

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Date:	Wed, 15 Jan 2014 22:23:49 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>, Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH 09/12] tools lib traceevent: Unregister handler when
 cfg80211 plugin unloaded

On Thu, 16 Jan 2014 11:31:15 +0900
Namhyung Kim <namhyung@...nel.org> wrote:

> The function handler should be unregistered when the plugin unloaded
> otherwise it'll try to access invalid memory.
> 
> Reviewed-by: Jiri Olsa <jolsa@...hat.com>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

You can add my Acked-by to patches 9-12 too.

-- Steve

> ---
>  tools/lib/traceevent/plugin_cfg80211.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/tools/lib/traceevent/plugin_cfg80211.c b/tools/lib/traceevent/plugin_cfg80211.c
> index 57e98221db20..c066b25905f8 100644
> --- a/tools/lib/traceevent/plugin_cfg80211.c
> +++ b/tools/lib/traceevent/plugin_cfg80211.c
> @@ -22,3 +22,9 @@ int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
>  				       PEVENT_FUNC_ARG_VOID);
>  	return 0;
>  }
> +
> +void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
> +{
> +	pevent_unregister_print_function(pevent, process___le16_to_cpup,
> +					 "__le16_to_cpup");
> +}

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