rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...0: (1 GPs behind) idle=615c/0/0x1 softirq=6390/6396 fqs=5250
	(detected by 1, t=10502 jiffies, g=3497, q=362 ncpus=2)
Task dump for CPU 0:
task:swapper/0       state:R  running task     stack:0     pid:0     ppid:0      flags:0x0000000a
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553
 init_task+0x0/0x1ac0