--- a/kernel/sched.c

+++ b/kernel/sched.c

@@ -7415,16 +7415,26 @@ static void __sdt_free(const struct cpum

struct sd_data *sdd = &tl->data;

for_each_cpu(j, cpu_map) {

- struct sched_domain *sd = *per_cpu_ptr(sdd->sd, j);

- if (sd && (sd->flags & SD_OVERLAP))

- free_sched_groups(sd->groups, 0);

- kfree(*per_cpu_ptr(sdd->sd, j));

- kfree(*per_cpu_ptr(sdd->sg, j));

- kfree(*per_cpu_ptr(sdd->sgp, j));

+ struct sched_domain *sd;

+

+ if (sdd->sd) {

+ sd = *per_cpu_ptr(sdd->sd, j);

+ if (sd && (sd->flags & SD_OVERLAP))

+ free_sched_groups(sd->groups, 0);

+ kfree(*per_cpu_ptr(sdd->sd, j));

+ }

+

+ if (sdd->sg)

+ kfree(*per_cpu_ptr(sdd->sg, j));

+ if (sdd->sgp)

+ kfree(*per_cpu_ptr(sdd->sgp, j));

}

free_percpu(sdd->sd);

+ sdd->sd = NULL;

free_percpu(sdd->sg);

+ sdd->sg = NULL;

free_percpu(sdd->sgp);

+ sdd->sgp = NULL;

}

}