Public bug reported:
[Impact]
libvirtd won't be able to create VMs.
[Test case]
Start a VM using virsh/libvirtd:
virsh start focal
[Potential regression]
Some other processes won't be able to start inside some cgroups.
---------------------------
$ virsh start focal
error: Failed to start domain focal
error: internal error: process exited while connecting to monitor:
ioctl(KVM_CREATE_VM) failed: 22 Invalid argument
2021-08-16T15:11:23.005201Z qemu-system-x86_64: failed to initialize KVM:
Invalid argument
$ sudo dmesg | grep kvm
[ 135.237378] kvm: Nested Virtualization enabled
[ 135.237384] SVM: kvm: Nested Paging enabled
[ 166.209556] kvm [4082]: kvm_vm_worker_thread: cgroup_attach_task_all failed
with err -22
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Hirsute)
Importance: High
Assignee: Thadeu Lima de Souza Cascardo (cascardo)
Status: In Progress
** Also affects: linux (Ubuntu Hirsute)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: New => Invalid
** Changed in: linux (Ubuntu Hirsute)
Status: New => In Progress
** Changed in: linux (Ubuntu Hirsute)
Importance: Undecided => High
** Changed in: linux (Ubuntu Hirsute)
Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)
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https://bugs.launchpad.net/bugs/1940107
Title:
libvirtd failes to create VM
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