[PATCH 4.4 21/47] perf test bpf: Free obj_buf

Greg Kroah-Hartman
2021-07-26T15:41:14Z

From: Riccardo Mancini <rickyman7@gmail.com>

[ Upstream commit 937654ce497fb6e977a8c52baee5f7d9616302d9 ]

ASan reports some memory leaks when running:

# perf test "42: BPF filter"

The first of these leaks is caused by obj_buf never being deallocated in
__test__bpf.

This patch adds the missing free.

Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
Fixes: ba1fae431e74bb42 ("perf test: Add 'perf test BPF'")
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>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lore.kernel.org/lkml/60f3ca935fe6672e7e866276ce6264c9e26e4c87.1626343282.git.rickyman7@gmail.com
[ Added missing stdlib.h include ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/perf/tests/bpf.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/tools/perf/tests/bpf.c b/tools/perf/tests/bpf.c
index 6ebfdee3e2c6..661cca25ae5d 100644
--- a/tools/perf/tests/bpf.c
+++ b/tools/perf/tests/bpf.c
@@ -1,4 +1,5 @@
#include <stdio.h>
+#include <stdlib.h>
#include <sys/epoll.h>
#include <util/bpf-loader.h>
#include <util/evlist.h>
@@ -176,6 +177,7 @@ static int __test__bpf(int idx)
bpf_testcase_table[idx].target_func,
bpf_testcase_table[idx].expect_result);
out:
+ free(obj_buf);
bpf__clear();
return ret;
}
--
2.30.2