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VM CPU issues: watchdog: BUG: soft lockup - CPU#7 stuck for 22s!

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Hello!

Every couple of weeks various VMs tend to become problematic and their consoles show the following errors:

vm_cpu_issues.png


Rebooting the VM fixes the issue.

How do I diagnose what's going wrong? In that state of the VM, I'm unable to SSH into it.

The Proxmox is installed on HP Proliant DL380e Gen8. I'm running pve-manager/7.1-11/8d529482 (running kernel: 5.13.19-6-pve)

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