linux-kernel - Re: [PATCH 1/1] perf diff: fix error return value in __cmd

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Date:   Fri, 27 Nov 2020 16:40:06 +0800
From:   "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        "Namhyung Kim" <namhyung@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] perf diff: fix error return value in __cmd_diff()

Hi everybody:
  Can any one review it?


On 2020/11/24 18:36, Zhen Lei wrote:
> An appropriate return value should be set on the failed path.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
> ---
>  tools/perf/builtin-diff.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
> index 584e2e1a3793..cefc71506409 100644
> --- a/tools/perf/builtin-diff.c
> +++ b/tools/perf/builtin-diff.c
> @@ -1222,8 +1222,10 @@ static int __cmd_diff(void)
>  		if (compute == COMPUTE_STREAM) {
>  			d->evlist_streams = evlist__create_streams(
>  						d->session->evlist, 5);
> -			if (!d->evlist_streams)
> +			if (!d->evlist_streams) {
> +				ret = -ENOMEM;
>  				goto out_delete;
> +			}
>  		}
>  	}
>  
>