perf script: Fix possible memory leaks
Some paths in perf script don't call perf_session__delete() after
creating a new session.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1407825645-24586-2-git-send-email-namhyung@kernel.org
[ Saved errno value before calling perror(), as pointed out by Adrian Hunter ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 868c17d..c84d723 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1471,12 +1471,13 @@
bool show_full_info = false;
bool header = false;
bool header_only = false;
+ bool script_started = false;
char *rec_script_path = NULL;
char *rep_script_path = NULL;
struct perf_session *session;
char *script_path = NULL;
const char **__argv;
- int i, j, err;
+ int i, j, err = 0;
struct perf_script script = {
.tool = {
.sample = process_sample_event,
@@ -1730,14 +1731,15 @@
if (header || header_only) {
perf_session__fprintf_info(session, stdout, show_full_info);
if (header_only)
- return 0;
+ goto out_delete;
}
script.session = session;
if (cpu_list) {
- if (perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap))
- return -1;
+ err = perf_session__cpu_bitmap(session, cpu_list, cpu_bitmap);
+ if (err < 0)
+ goto out_delete;
}
if (!no_callchain)
@@ -1752,53 +1754,60 @@
if (output_set_by_user()) {
fprintf(stderr,
"custom fields not supported for generated scripts");
- return -1;
+ err = -EINVAL;
+ goto out_delete;
}
input = open(file.path, O_RDONLY); /* input_name */
if (input < 0) {
+ err = -errno;
perror("failed to open file");
- return -1;
+ goto out_delete;
}
err = fstat(input, &perf_stat);
if (err < 0) {
perror("failed to stat file");
- return -1;
+ goto out_delete;
}
if (!perf_stat.st_size) {
fprintf(stderr, "zero-sized file, nothing to do!\n");
- return 0;
+ goto out_delete;
}
scripting_ops = script_spec__lookup(generate_script_lang);
if (!scripting_ops) {
fprintf(stderr, "invalid language specifier");
- return -1;
+ err = -ENOENT;
+ goto out_delete;
}
err = scripting_ops->generate_script(session->tevent.pevent,
"perf-script");
- goto out;
+ goto out_delete;
}
if (script_name) {
err = scripting_ops->start_script(script_name, argc, argv);
if (err)
- goto out;
+ goto out_delete;
pr_debug("perf script started with script %s\n\n", script_name);
+ script_started = true;
}
err = perf_session__check_output_opt(session);
if (err < 0)
- goto out;
+ goto out_delete;
err = __cmd_script(&script);
+out_delete:
perf_session__delete(session);
- cleanup_scripting();
+
+ if (script_started)
+ cleanup_scripting();
out:
return err;
}
