On Fri, Jun 28, 2019 at 10:06:18AM +0200, Juri Lelli wrote: > sched_setscheduler() needs to acquire cpuset_rwsem, but it is currently > called from an invalid (atomic) context by rcu_spawn_gp_kthread(). > > Fix that by simply moving sched_setscheduler_nocheck() call outside of > the atomic region, as it doesn't actually require to be guarded by > rcu_node lock. Maybe move this earlier in the series such that the bug doesn't manifest in bisection?