linux-kernel - Re: [RESEND PATCH 1/2] perf probe: Fix the missed parameter initialization

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Date:	Fri, 29 Apr 2011 11:44:41 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Lin Ming <ming.m.lin@...el.com>
Cc:	Arnaldo Carvalho de Melo <acme@...radead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND PATCH 1/2] perf probe: Fix the missed parameter
 initialization


* Lin Ming <ming.m.lin@...el.com> wrote:

> pubname_callback_param::found should be initialized to 0 in fastpath lookup.
> 
> Signed-off-by: Lin Ming <ming.m.lin@...el.com>
> ---
>  tools/perf/util/probe-finder.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
> index a7c7145..3b9d0b8 100644
> --- a/tools/perf/util/probe-finder.c
> +++ b/tools/perf/util/probe-finder.c
> @@ -1538,6 +1538,7 @@ static int find_probes(int fd, struct probe_finder *pf)
>  			.file	  = pp->file,
>  			.cu_die	  = &pf->cu_die,
>  			.sp_die	  = &pf->sp_die,
> +			.found	  = 0,

Hm, why is this a 'misc cleanup'? If this field is uninitialized (it does 
appear so) and we rely on the field then right now this is a bug and the fix 
should be pushed to perf/urgent.

Thanks,

	Ingo
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