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perf map: Add map__refcnt() accessor to use in the maps test

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To remove one more direct access to 'struct map' so that we can intecept
accesses to its instantiations and refcount check it to catch use after
free, etc.

Cc: Adrian Hunter <[email protected]>
Cc: Alexey Bayduraev <[email protected]>
Cc: Dmitriy Vyukov <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Riccardo Mancini <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Stephen Brennan <[email protected]>
Link: https://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Arnaldo Carvalho de Melo
2023-04-12 12:49:16 -03:00
parent 984abd349d
commit 4e8db2d752
2 changed files with 7 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/perf/tests/maps.c
+2 -2
View File
@@ -30,7 +30,7 @@ static int check_maps(struct map_def *merged, unsigned int size, struct maps *ma
if (map__start(map) != merged[i].start ||
map__end(map) != merged[i].end ||
strcmp(map__dso(map)->name, merged[i].name) ||
refcount_read(&map->refcnt) != 1) {
refcount_read(map__refcnt(map)) != 1) {
failed = true;
}
i++;
@@ -50,7 +50,7 @@ static int check_maps(struct map_def *merged, unsigned int size, struct maps *ma
map__start(map),
map__end(map),
map__dso(map)->name,
refcount_read(&map->refcnt));
refcount_read(map__refcnt(map)));
}
}
return failed ? TEST_FAIL : TEST_OK;
tools/perf/util/map.h
+5
View File
@@ -97,6 +97,11 @@ static inline bool map__priv(const struct map *map)
return map->priv;
}
static inline refcount_t *map__refcnt(struct map *map)
{
return &map->refcnt;
}
static inline size_t map__size(const struct map *map)
{
return map__end(map) - map__start(map);