Hass rcu logs - and what to do about them

Installation
1

Home Assistant blocks periodically. (Daily)
I have some logs appearing over night that I am not sure what to do about them.
If this is the wrong Category, Please direct me to the proper place to post this.

Note: In the following logs I did not type in all the timestamps and I don’t know how to copy / paste from the VM console…

[48711.696570]
  rcu: Possible timer handling issue on cpu=0 timer-softirq=22324046
  rcu: rcu_preempt kthread starved for 23131 jiffies! g565113 f0x0 
     RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
  rcu: Unless rcu_preempt kthread gets sufficient CPU time, 00M is now expected 
     behaviour.
  rcu: RCU grace-period kthread stack dump:
  Stack dump where RCU GP kthread last ran:
[60451.257078]
  rcu: INFO: rcu_preempt self-detected stall on CPU
  systemd[1]: systemd-resolved.service: Watchdog timeout (limit 3min)!
  rcu: o0-...!: (2 ticks this GP) idle=652c/1/0x400000000000000 
     softirq=523499/523499 fsq=0
  rcu: 0(t=2135553 jiffies g=670533 q=27 ncpus=2)
  systemd[1]: systemd-timesyncd.service: Watchdog timeout (limit 3min)!
[60451.272005]
  rcu: rcu_preempt kthread timer wakeup didn't happen for 2135562 jiffies! g670533 
     f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402

And on it goes…

Environment:
Newly installed Hass on VirtualBox VM hosted in Windows 11 Home
VM with 2G RAM, 2 CPUs

Any help would be greatly appreciated to avoid manual intervention every morning.

…Dale

2

Well I found a solution. There was no support from either this forum or from VirtualBox regarding these crashes and timer dead-lock issues. I tried. In the end, I switched to using Hyper-V (as I don’t have a stand alone server). Hyper-V solved the problem entirely. Everything is now working as expected. Keys to using Hyper-V include - Must be running Windows 11 Pro or Ent. - Must enable Hyper-V in Windows Program Settings, - In Hyper-V you need to create a bridged network adapter for use in the HomeAssistant VM, then create the VM.

  • Download the Hyper-V image from HomeAssistant online, unzip and copy the virtual disk to the location you have defined your VM to reside.

…Dale
VMWare may be another option as well.