In perf_sched__schedstat_live(), build_cpu_domain_map() returns the
pointer to cpu_domain_map which can also be NULL. Add NULL check for the
same to avoid NULL pointer dereference.
Fixes: 00093b313398 ("perf sched stats: Add support for live mode")
Signed-off-by: Swapnil Sapkal <swapnil.sapkal@amd.com>
---
tools/perf/builtin-sched.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index b190e928117c..f5e449bd6823 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -4714,6 +4714,11 @@ static int perf_sched__schedstat_live(struct perf_sched *sched,
nr = cpu__max_present_cpu().cpu;
cd_map = build_cpu_domain_map(&sv, &md, nr);
+ if (!cd_map) {
+ pr_err("Unable to generate cpu-domain relation info");
+ goto out;
+ }
+
show_schedstat_data(&cpu_head, cd_map, NULL, NULL, false);
free_cpu_domain_info(cd_map, sv, nr);
out:
--
2.43.0