perf lzma: Close lzma stream on exit

ASan reports memory leaks when running:

  # 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().

Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
Fixes: 80a32e5b498a7547 ("perf tools: Add lzma decompression support for kernel module")
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/aaf50bdce7afe996cfc06e1bbb36e4a2a9b9db93.1626343282.git.rickyman7@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/lzma.c b/tools/perf/util/lzma.c
index 39062df..51424cd 100644 (file)
--- 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;