Public bug reported: == Comment: #0 - SEETEENA THOUFEEK <[email protected]> - 2024-08-12 03:47:06 == +++ This bug was initially created as a clone of Bug #205620 +++
---Problem Description--- cpu hotplug crashes the guest!cpu hotplug crashes the guest! ---Steps to Reproduce--- I have been trying for the CPU hotplugging to the guest with maxvcpus as 128 and current value I am giving as 4! but when I try to hotplug 68 vcpus to the guest, it crahses and we get error message as: [ 303.808494] KVM: Create Guest vcpu hcall failed, rc=-44 error: Unable to read from monitor: Connection reset by peer Steps to reproduce: 1) virsh define bug.xml 2) virsh start Fedora39 --console 3) virsh setvcpus Fedora39 68 Output : [ 662.102542] KVM: Create Guest vcpu hcall failed, rc=-44 error: Unable to read from monitor: Connection reset by peer If resources are less, in my thinking it should fail gracefully! Attaching the XML file that i have used and will post the observations on MDC system there i saw this same failure on higher number. fixed with upstream commit https://github.com/qemu/qemu/commit/cfb52d07f53aa916003d43f69c945c2b42bc6374 Machine Type = na ---Debugger--- A debugger is not configured Contact Information = [email protected] ---uname output--- NA ** Affects: qemu (Ubuntu) Importance: Undecided Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) Status: New ** Tags: architecture-ppc64le bugnameltc-208538 severity-high targetmilestone-inin--- ** Tags added: architecture-ppc64le bugnameltc-208538 severity-high targetmilestone-inin--- ** Changed in: ubuntu Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) ** Package changed: ubuntu => qemu (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2076587 Title: cpu hotplug crashes the guest! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2076587/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
