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-rw-r--r--kernel/sched.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 186c6fd08acf..cc397aae5eae 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -9654,12 +9654,17 @@ static void cpuacct_charge(struct task_struct *tsk, u64 cputime)
return;
cpu = task_cpu(tsk);
+
+ rcu_read_lock();
+
ca = task_ca(tsk);
for (; ca; ca = ca->parent) {
u64 *cpuusage = percpu_ptr(ca->cpuusage, cpu);
*cpuusage += cputime;
}
+
+ rcu_read_unlock();
}
struct cgroup_subsys cpuacct_subsys = {
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