perf machine: Don't leak module maps

machine__addnew_module_map requires a put on its result. Add this and
narrow the scope of map to make the correctness more obvious. This
leak was caught with leak sanitizer and the reference count checker.

Signed-off-by: Ian Rogers <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ali Saidi <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Athira Rajeev <[email protected]>
Cc: Brian Robbins <[email protected]>
Cc: Changbin Du <[email protected]>
Cc: Dmitrii Dolgov <[email protected]>
Cc: Fangrui Song <[email protected]>
Cc: German Gomez <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Ivan Babrou <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jing Zhang <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: John Garry <[email protected]>
Cc: K Prateek Nayak <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Liam Howlett <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Miguel Ojeda <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Naveen N. Rao <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: Sean Christopherson <[email protected]>
Cc: Steinar H. Gunderson <[email protected]>
Cc: Suzuki Poulouse <[email protected]>
Cc: Wenyu Liu <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Ye Xingchen <[email protected]>
Cc: Yuan Can <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index f8e6c07f0048..359ef6b4e840 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1797,7 +1797,6 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 					      struct extra_kernel_map *xm,
 					      struct build_id *bid)
 {
-	struct map *map;
 	enum dso_space_type dso_space;
 	bool is_kernel_mmap;
 	const char *mmap_name = machine->mmap_name;
@@ -1823,8 +1822,8 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 	}
 	if (xm->name[0] == '/' ||
 	    (!is_kernel_mmap && xm->name[0] == '[')) {
-		map = machine__addnew_module_map(machine, xm->start,
-						 xm->name);
+		struct map *map = machine__addnew_module_map(machine, xm->start, xm->name);
+
 		if (map == NULL)
 			goto out_problem;
 
@@ -1833,6 +1832,7 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 		if (build_id__is_defined(bid))
 			dso__set_build_id(map__dso(map), bid);
 
+		map__put(map);
 	} else if (is_kernel_mmap) {
 		const char *symbol_name = xm->name + strlen(mmap_name);
 		/*