perf dso: Add missed dso__put to dso__load_kcore

[ Upstream commit 63a088e999de3f431f87d9a367933da894ddb613 ]

The kcore loading creates a set of list nodes that have reference
counted references to maps of the kcore. The list node freeing in the
success path wasn't releasing the maps, add the missing puts. It is
unclear why this leak was being missed by leak sanitizer.

Fixes: 83720209961f ("perf map: Move map list node into symbol")
Signed-off-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250624190326.2038704-2-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 3bbf173ad822bce9466ee1ed77641c75ab74d2a6..c0ec5ed4f1aa4137100884fcb915ff9bc43b60e7 100644 (file)
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1405,6 +1405,7 @@ static int dso__load_kcore(struct dso *dso, struct map *map,
                                goto out_err;
                        }
                }
+               map__zput(new_node->map);
                free(new_node);
        }