[Eas-dev] [PATCH 3/3] sched/tune: Avoid null pointer dereference in schedtune_add_cluster_nrg

A CPU's scheduler domain doesn't always have a parent e.g. if we only have one cluster present or enabled in the system. --- kernel/sched/tune.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/tune.c b/kernel/sched/tune.c index 6edfd44..53c6de56 100644 --- a/kernel/sched/tune.c +++ b/kernel/sched/tune.c @@ -719,7 +719,7 @@ schedtune_add_cluster_nrg( * Assume we have EM data only at the CPU and * the upper CLUSTER level */ - BUG_ON(!cpumask_equal( + BUG_ON(sd2->parent && !cpumask_equal( sched_group_cpus(sg), sched_group_cpus(sd2->parent->groups) )); -- 2.1.4