rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=11361 jiffies, g=6649, q=1111)
rcu: All QSes seen, last rcu_preempt kthread activity 6733 (4294957058-4294950325), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 6733 jiffies! g6649 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:28816 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4986 [inline]
 __schedule+0x90d/0x2680 kernel/sched/core.c:6295