[PATCH 4/7] perf test: Fix cpus and thread maps refference in error path

[Jiri Olsa <jolsa@kernel.org>]

In error path to try user space event, both cpus and threads map
now owned by evlist and freed by perf_evlist__set_maps call.
Getting reference to keep them alive.

Link: http://lkml.kernel.org/n/tip-koezjafs5le3zd95crpz6d85@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/tests/code-reading.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index 26182ffcea75..313a48c6b2bc 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -547,6 +547,13 @@ static int do_test_code_reading(bool try_kcore)
 		if (ret < 0) {
 			if (!excl_kernel) {
 				excl_kernel = true;
+				/*
+				 * Both cpus and threads are now owned by evlist
+				 * and will be freed by following perf_evlist__set_maps
+				 * call. Getting refference to keep them alive.
+				 */
+				cpu_map__get(cpus);
+				thread_map__get(threads);
 				perf_evlist__set_maps(evlist, NULL, NULL);
 				perf_evlist__delete(evlist);
 				evlist = NULL;
-- 
2.4.3