linux-kernel - Re: [PATCH 14/20] perf util/lzma: close lzma stream

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Date:   Thu, 15 Jul 2021 17:31:05 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Riccardo Mancini <rickyman7@...il.com>
Cc:     Ian Rogers <irogers@...gle.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 14/20] perf util/lzma: close lzma stream

Em Thu, Jul 15, 2021 at 06:07:19PM +0200, Riccardo Mancini escreveu:
> ASan reports memory leaks when running the perf test
> "88: Check open filename arg using perf trace + vfs_getname".
> One of these is caused by the lzma stream never being closed inside
> lzma_decompress_to_file.
> 
> This patch adds the missing lzma_end.

Fixes: 80a32e5b498a7547 ("perf tools: Add lzma decompression support for kernel module")

Thanks, applied.

- Arnaldo

 
> Signed-off-by: Riccardo Mancini <rickyman7@...il.com>
> ---
>  tools/perf/util/lzma.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/perf/util/lzma.c b/tools/perf/util/lzma.c
> index 39062df0262915bd..51424cdc3b682c64 100644
> --- a/tools/perf/util/lzma.c
> +++ b/tools/perf/util/lzma.c
> @@ -69,7 +69,7 @@ int lzma_decompress_to_file(const char *input, int output_fd)
>  
>  			if (ferror(infile)) {
>  				pr_err("lzma: read error: %s\n", strerror(errno));
> -				goto err_fclose;
> +				goto err_lzma_end;
>  			}
>  
>  			if (feof(infile))
> @@ -83,7 +83,7 @@ int lzma_decompress_to_file(const char *input, int output_fd)
>  
>  			if (writen(output_fd, buf_out, write_size) != write_size) {
>  				pr_err("lzma: write error: %s\n", strerror(errno));
> -				goto err_fclose;
> +				goto err_lzma_end;
>  			}
>  
>  			strm.next_out  = buf_out;
> @@ -95,11 +95,13 @@ int lzma_decompress_to_file(const char *input, int output_fd)
>  				break;
>  
>  			pr_err("lzma: failed %s\n", lzma_strerror(ret));
> -			goto err_fclose;
> +			goto err_lzma_end;
>  		}
>  	}
>  
>  	err = 0;
> +err_lzma_end:
> +	lzma_end(&strm);
>  err_fclose:
>  	fclose(infile);
>  	return err;
> -- 
> 2.31.1
> 

-- 

- Arnaldo