rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=771/1/0x4000000000000002 softirq=6528/6528 fqs=0 
	(detected by 1, t=10505 jiffies, g=6025, q=1273)
Task dump for CPU 0:
task:udevd           state:R  running task     stack:    0 pid: 3642 ppid:     1 flags:0x00000002
Call trace:
 __switch_to+0x308/0x588 arch/arm64/kernel/process.c:518
 0xffff7000043c0dec
rcu: rcu_preempt kthread timer wakeup didn't happen for 10504 jiffies! g6025 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=2147
rcu: rcu_preempt kthread starved for 10505 jiffies! g6025 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:    0 pid:   15 ppid:     2 flags:0x00000008
Call trace:
 __switch_to+0x308/0x588 arch/arm64/kernel/process.c:518
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0xf10/0x1e48 kernel/sched/core.c:6373
 schedule+0x11c/0x1c8 kernel/sched/core.c:6456
 schedule_timeout+0x1d8/0x344 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x26c/0x13d4 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xc4/0x2c4 kernel/rcu/tree.c:2145
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
rcu: Stack dump where RCU GP kthread last ran:
Task dump for CPU 0:
task:udevd           state:R  running task     stack:    0 pid: 3642 ppid:     1 flags:0x00000002
Call trace:
 __switch_to+0x308/0x588 arch/arm64/kernel/process.c:518
 0xffff7000043c0dec