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-rw-r--r--kernel/sched/fair.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index bba945277205..3887b7323abd 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1608,6 +1608,7 @@ static void update_numa_stats(struct task_numa_env *env,
memset(ns, 0, sizeof(*ns));
ns->idle_cpu = -1;
+ rcu_read_lock();
for_each_cpu(cpu, cpumask_of_node(nid)) {
struct rq *rq = cpu_rq(cpu);
@@ -1627,6 +1628,7 @@ static void update_numa_stats(struct task_numa_env *env,
idle_core = numa_idle_core(idle_core, cpu);
}
}
+ rcu_read_unlock();
ns->weight = cpumask_weight(cpumask_of_node(nid));