From: Ian Rogers <irogers@google.com>
Date: Sat, 22 Nov 2025 08:19:19 +0000 (-0800)
Subject: perf mem-events: Don't leak online CPU map
X-Git-Tag: v6.19-rc1~61^2~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=69d247295a51db53294efc14dc7e73b3c57df0f8;p=thirdparty%2Fkernel%2Flinux.git

perf mem-events: Don't leak online CPU map

Reference count checking found the online CPU map was being gotten but
not put. Add in the missing put.

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---

diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index 80b3069427bc4..0b49fce251fcc 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -303,12 +303,15 @@ int perf_mem_events__record_args(const char **rec_argv, int *argv_nr, char **eve
 	}
 
 	if (cpu_map) {
-		if (!perf_cpu_map__equal(cpu_map, cpu_map__online())) {
+		struct perf_cpu_map *online = cpu_map__online();
+
+		if (!perf_cpu_map__equal(cpu_map, online)) {
 			char buf[200];
 
 			cpu_map__snprint(cpu_map, buf, sizeof(buf));
 			pr_warning("Memory events are enabled on a subset of CPUs: %s\n", buf);
 		}
+		perf_cpu_map__put(online);
 		perf_cpu_map__put(cpu_map);
 	}