perf tools: Use zfree() where applicable
In places where the equivalent was already being done, i.e.:
free(a);
a = NULL;
And in placs where struct members are being freed so that if we have
some erroneous reference to its struct, then accesses to freed members
will result in segfaults, which we can detect faster than use after free
to areas that may still have something seemingly valid.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-jatyoofo5boc1bsvoig6bb6i@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index f523da3..cf826ec 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -810,7 +810,7 @@ struct map *machine__findnew_module_map(struct machine *machine, u64 start,
out:
/* put the dso here, corresponding to machine__findnew_module_dso */
dso__put(dso);
- free(m.name);
+ zfree(&m.name);
return map;
}
@@ -1350,7 +1350,7 @@ static int map_groups__set_modules_path_dir(struct map_groups *mg,
if (m.kmod)
ret = map_groups__set_module_path(mg, path, &m);
- free(m.name);
+ zfree(&m.name);
if (ret)
goto out;