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From:   Jiri Olsa <jolsa@kernel.org>
To:     Arnaldo Carvalho de Melo <acme@kernel.org>
Cc:     Arnaldo Carvalho de Melo <acme@redhat.com>,
        lkml <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Michael Petlan <mpetlan@redhat.com>,
        Andi Kleen <ak@linux.intel.com>,
        Kajol Jain <kjain@linux.ibm.com>,
        John Garry <john.garry@huawei.com>,
        "Paul A. Clarke" <pc@us.ibm.com>,
        Stephane Eranian <eranian@google.com>,
        Ian Rogers <irogers@google.com>
Subject: [PATCH 01/19] perf metric: Fix memory leak in expr__add_id function
Date:   Sun, 19 Jul 2020 20:13:02 +0200
Message-Id: <20200719181320.785305-2-jolsa@kernel.org>
In-Reply-To: <20200719181320.785305-1-jolsa@kernel.org>
References: <20200719181320.785305-1-jolsa@kernel.org>
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Arnaldo found that we don't release value data in case the
hashmap__set fails. Releasing it in case of an error.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/util/expr.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index 5d05f9765ed8..578a173d4873 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -47,6 +47,8 @@ int expr__add_id_val(struct expr_parse_ctx *ctx, const char *id, double val)
 	}
 	ret = hashmap__set(&ctx->ids, id, data_ptr,
 			   (const void **)&old_key, (void **)&old_data);
+	if (ret)
+		free(data_ptr);
 	free(old_key);
 	free(old_data);
 	return ret;
-- 
2.25.4