linux-kernel - Re: [PATCH 2/5] perf tools: cleanup trace-event-info 'tdata' leak

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Date:   Tue, 2 Oct 2018 12:47:18 -0300
From:   Arnaldo Carvalho de Melo <acme@...hat.com>
To:     Sanskriti Sharma <sansharm@...hat.com>
Cc:     linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>,
        Joe Lawrence <joe.lawrence@...hat.com>, acme@...nel.org
Subject: Re: [PATCH 2/5] perf tools: cleanup trace-event-info 'tdata' leak

Em Tue, Oct 02, 2018 at 10:29:11AM -0400, Sanskriti Sharma escreveu:
> Free tracing_data structure in tracing_data_get() error paths.
> 
> Fixes the following coverity complaint:
> 
>   Error: RESOURCE_LEAK (CWE-772):
>   leaked_storage: Variable "tdata" going out of scope leaks the storage

Thanks, applied

- Arnaldo
 
> Signed-off-by: Sanskriti Sharma <sansharm@...hat.com>
> ---
>  tools/perf/util/trace-event-info.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
> index 7b0ca7c..8ad8e75 100644
> --- a/tools/perf/util/trace-event-info.c
> +++ b/tools/perf/util/trace-event-info.c
> @@ -531,12 +531,14 @@ struct tracing_data *tracing_data_get(struct list_head *pattrs,
>  			 "/tmp/perf-XXXXXX");
>  		if (!mkstemp(tdata->temp_file)) {
>  			pr_debug("Can't make temp file");
> +			free(tdata);
>  			return NULL;
>  		}
>  
>  		temp_fd = open(tdata->temp_file, O_RDWR);
>  		if (temp_fd < 0) {
>  			pr_debug("Can't read '%s'", tdata->temp_file);
> +			free(tdata);
>  			return NULL;
>  		}
>  
> -- 
> 1.8.3.1