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From: John Garry <john.garry@huawei.com>
To: <peterz@infradead.org>, <mingo@redhat.com>, <acme@kernel.org>,
	<mark.rutland@arm.com>, <alexander.shishkin@linux.intel.com>,
	<jolsa@redhat.com>, <namhyung@kernel.org>
Cc: <will@kernel.org>, <ak@linux.intel.com>, <linuxarm@huawei.com>,
	<linux-kernel@vger.kernel.org>, <james.clark@arm.com>,
	<qiangqing.zhang@nxp.com>, John Garry <john.garry@huawei.com>
Subject: [PATCH 1/6] perf jevents: Fix leak of mapfile memory
Date: Thu, 5 Mar 2020 19:08:01 +0800	[thread overview]
Message-ID: <1583406486-154841-2-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1583406486-154841-1-git-send-email-john.garry@huawei.com>

The memory for global pointer is never freed during normal program
execution, so let's do that in the main function exit as a good programming
practice.

A stray blank line is also removed.

Reported-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: John Garry <john.garry@huawei.com>
---
 tools/perf/pmu-events/jevents.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 079c77b6a2fd..27b4da80f751 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -1082,10 +1082,9 @@ static int process_one_file(const char *fpath, const struct stat *sb,
  */
 int main(int argc, char *argv[])
 {
-	int rc;
+	int rc, ret = 0;
 	int maxfds;
 	char ldirname[PATH_MAX];
-
 	const char *arch;
 	const char *output_file;
 	const char *start_dirname;
@@ -1156,7 +1155,8 @@ int main(int argc, char *argv[])
 		/* Make build fail */
 		fclose(eventsfp);
 		free_arch_std_events();
-		return 1;
+		ret = 1;
+		goto out_free_mapfile;
 	} else if (rc) {
 		goto empty_map;
 	}
@@ -1174,14 +1174,17 @@ int main(int argc, char *argv[])
 		/* Make build fail */
 		fclose(eventsfp);
 		free_arch_std_events();
-		return 1;
+		ret = 1;
 	}
 
-	return 0;
+
+	goto out_free_mapfile;
 
 empty_map:
 	fclose(eventsfp);
 	create_empty_mapping(output_file);
 	free_arch_std_events();
-	return 0;
+out_free_mapfile:
+	free(mapfile);
+	return ret;
 }
-- 
2.17.1


  reply	other threads:[~2020-03-05 11:12 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-05 11:08 [PATCH 0/6] perf test pmu-events case John Garry
2020-03-05 11:08 ` John Garry [this message]
2020-03-05 15:13   ` [PATCH 1/6] perf jevents: Fix leak of mapfile memory Arnaldo Carvalho de Melo
2020-03-07  7:36   ` [tip: perf/urgent] " tip-bot2 for John Garry
2020-03-05 11:08 ` [PATCH 2/6] perf jevents: Support test events folder John Garry
2020-03-05 11:08 ` [PATCH 3/6] perf jevents: Add some test events John Garry
2020-03-05 11:08 ` [PATCH 4/6] perf pmu: Refactor pmu_add_cpu_aliases() John Garry
2020-03-05 11:08 ` [PATCH 5/6] perf pmu: Add is_pmu_core() John Garry
2020-03-05 11:08 ` [PATCH 6/6] perf test: Add pmu-events test John Garry
2020-03-09  8:49   ` Jiri Olsa
2020-03-09 10:12     ` John Garry
2020-03-09 15:26       ` Jiri Olsa
2020-03-09 16:20         ` John Garry
2020-03-13 10:32           ` Jiri Olsa
2020-03-13 11:08             ` John Garry

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