diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 881b861c35ee..724a79386321 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -191,7 +191,7 @@ static void ui__warn_map_erange(struct map *map, struct symbol *sym, u64 ip)
 	if (use_browser <= 0)
 		sleep(5);
 
-	map__set_erange_warned(map, true);
+	map__set_erange_warned(map);
 }
 
 static void perf_top__record_precise_ip(struct perf_top *top,
diff --git a/tools/perf/tests/vmlinux-kallsyms.c b/tools/perf/tests/vmlinux-kallsyms.c
index cd3b480d20bd..74cdbd2ce9d0 100644
--- a/tools/perf/tests/vmlinux-kallsyms.c
+++ b/tools/perf/tests/vmlinux-kallsyms.c
@@ -131,7 +131,7 @@ static int test__vmlinux_matches_kallsyms_cb1(struct map *map, void *data)
 					(dso__kernel(dso) ? dso__short_name(dso) : dso__name(dso)));
 
 	if (pair) {
-		map__set_priv(pair, 1);
+		map__set_priv(pair);
 		map__put(pair);
 	} else {
 		if (!args->header_printed) {
@@ -166,7 +166,7 @@ static int test__vmlinux_matches_kallsyms_cb2(struct map *map, void *data)
 			pr_info(":\nWARN: *%" PRIx64 "-%" PRIx64 " %" PRIx64,
 				map__start(pair), map__end(pair), map__pgoff(pair));
 		pr_info(" %s\n", dso__name(dso));
-		map__set_priv(pair, 1);
+		map__set_priv(pair);
 	}
 	map__put(pair);
 	return 0;
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index e1d14936a60d..e781c8d56a9a 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -102,16 +102,20 @@ static inline bool replace_android_lib(const char *filename, char *newfilename)
 	return false;
 }
 
-void map__init(struct map *map, u64 start, u64 end, u64 pgoff, struct dso *dso)
+static void map__init(struct map *map, u64 start, u64 end, u64 pgoff,
+		      struct dso *dso, u32 prot, u32 flags)
 {
 	map__set_start(map, start);
 	map__set_end(map, end);
 	map__set_pgoff(map, pgoff);
-	map__set_reloc(map, 0);
+	assert(map__reloc(map) == 0);
 	map__set_dso(map, dso__get(dso));
-	map__set_mapping_type(map, MAPPING_TYPE__DSO);
-	map__set_erange_warned(map, false);
 	refcount_set(map__refcnt(map), 1);
+	RC_CHK_ACCESS(map)->prot = prot;
+	RC_CHK_ACCESS(map)->flags = flags;
+	map__set_mapping_type(map, MAPPING_TYPE__DSO);
+	assert(map__erange_warned(map) == false);
+	assert(map__priv(map) == false);
 }
 
 struct map *map__new(struct machine *machine, u64 start, u64 len,
@@ -124,7 +128,7 @@ struct map *map__new(struct machine *machine, u64 start, u64 len,
 	struct nsinfo *nsi = NULL;
 	struct nsinfo *nnsi;
 
-	map = malloc(sizeof(*map));
+	map = zalloc(sizeof(*map));
 	if (ADD_RC_CHK(result, map)) {
 		char newfilename[PATH_MAX];
 		struct dso *dso, *header_bid_dso;
@@ -134,8 +138,6 @@ struct map *map__new(struct machine *machine, u64 start, u64 len,
 		anon = is_anon_memory(filename) || flags & MAP_HUGETLB;
 		vdso = is_vdso_map(filename);
 		no_dso = is_no_dso_memory(filename);
-		map->prot = prot;
-		map->flags = flags;
 		nsi = nsinfo__get(thread__nsinfo(thread));
 
 		if ((anon || no_dso) && nsi && (prot & PROT_EXEC)) {
@@ -169,7 +171,7 @@ struct map *map__new(struct machine *machine, u64 start, u64 len,
 			goto out_delete;
 
 		assert(!dso__kernel(dso));
-		map__init(result, start, start + len, pgoff, dso);
+		map__init(result, start, start + len, pgoff, dso, prot, flags);
 
 		if (anon || no_dso) {
 			map->mapping_type = MAPPING_TYPE__IDENTITY;
@@ -223,10 +225,8 @@ struct map *map__new2(u64 start, struct dso *dso)
 
 	map = calloc(1, sizeof(*map) + (dso__kernel(dso) ? sizeof(struct kmap) : 0));
 	if (ADD_RC_CHK(result, map)) {
-		/*
-		 * ->end will be filled after we load all the symbols
-		 */
-		map__init(result, start, 0, 0, dso);
+		/* ->end will be filled after we load all the symbols. */
+		map__init(result, start, /*end=*/0, /*pgoff=*/0, dso, /*prot=*/0, /*flags=*/0);
 	}
 
 	return result;
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index 65e2609fa1b1..6c43f31a9fe0 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -166,9 +166,6 @@ struct thread;
 #define map__for_each_symbol_by_name(map, sym_name, pos, idx)	\
 	__map__for_each_symbol_by_name(map, sym_name, (pos), idx)
 
-void map__init(struct map *map,
-	       u64 start, u64 end, u64 pgoff, struct dso *dso);
-
 struct dso_id;
 struct build_id;
 
@@ -285,14 +282,14 @@ static inline void map__set_reloc(struct map *map, u64 reloc)
 	RC_CHK_ACCESS(map)->reloc = reloc;
 }
 
-static inline void map__set_priv(struct map *map, int priv)
+static inline void map__set_priv(struct map *map)
 {
-	RC_CHK_ACCESS(map)->priv = priv;
+	RC_CHK_ACCESS(map)->priv = true;
 }
 
-static inline void map__set_erange_warned(struct map *map, bool erange_warned)
+static inline void map__set_erange_warned(struct map *map)
 {
-	RC_CHK_ACCESS(map)->erange_warned = erange_warned;
+	RC_CHK_ACCESS(map)->erange_warned = true;
 }
 
 static inline void map__set_dso(struct map *map, struct dso *dso)