linux-kernel - Re: [PATCH 3/4] perf util: Fix memory leak of prefix_if_not

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Message-ID: <20200521143903.GD3898@kernel.org>
Date:   Thu, 21 May 2020 11:39:03 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Wei Li <liwei391@...wei.com>
Cc:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel@...r.kernel.org, Li Bin <huawei.libin@...wei.com>,
        Xie XiuQi <xiexiuqi@...wei.com>,
        Hongbo Yao <yaohongbo@...wei.com>
Subject: Re: [PATCH 3/4] perf util: Fix memory leak of prefix_if_not_in

Em Thu, May 21, 2020 at 09:32:17PM +0800, Wei Li escreveu:
> From: Xie XiuQi <xiexiuqi@...wei.com>
> 
> Need to free "str" before return when asprintf() failed
> to avoid memory leak.

Thanks, applied.

- Arnaldo
 
> Signed-off-by: Xie XiuQi <xiexiuqi@...wei.com>
> ---
>  tools/perf/util/sort.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
> index f14cc728c358..8ed777565c82 100644
> --- a/tools/perf/util/sort.c
> +++ b/tools/perf/util/sort.c
> @@ -2811,7 +2811,7 @@ static char *prefix_if_not_in(const char *pre, char *str)
>  		return str;
>  
>  	if (asprintf(&n, "%s,%s", pre, str) < 0)
> -		return NULL;
> +		n = NULL;
>  
>  	free(str);
>  	return n;
> -- 
> 2.17.1
> 

-- 

- Arnaldo