I caught up with Sean in IRC and he confirmed the situation is basically
as I inferred above (exploitable by any normal authenticated user, not
just limited to operator level accounts).
** Also affects: ossa
Importance: Undecided
Status: New
** Changed in: ossa
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1981813
Title:
Compute service fails to restart if the vnic_type of a bound port
changed from direct to macvtap
Status in OpenStack Compute (nova):
In Progress
Status in OpenStack Security Advisory:
Incomplete
Bug description:
We have a downstream bug report with the following reproduction steps:
1) create a neutron port with vnic_type "direct"
2) create an instance with that port
3) after the instance is created successfully change the vnic_type of the
bound port from "direct" to "macvtap". This is accepted by Neutron
4) wait until the nova instance info caches is healed by the periodic task in
nova-compute
5) restart the nova-compute service.
Actual behavior
---------------
The nova-compute service fails to start with PciDeviceNotFoundById exception
pointing to the PCI address of the VF the port is bound to on the host.
Expected behavior
-----------------
The nova-compute service should start up successfully.
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service Traceback (most recent call last):
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/pci/utils.py", line 167, in
get_ifname_by_pci_address
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service dev_info = os.listdir(dev_path)
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service FileNotFoundError: [Errno 2] No such file or directory:
'/sys/bus/pci/devices/0000:19:0a.7/net'
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service During handling of the above exception, another exception
occurred:
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service Traceback (most recent call last):
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File
"/usr/local/lib/python3.10/site-packages/oslo_service/service.py", line 806, in
run_service
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service service.start()
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/service.py", line 159, in
start
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service self.manager.init_host()
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/compute/manager.py", line
1536, in init_host
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service self._init_instance(context, instance)
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/compute/manager.py", line
1230, in _init_instance
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service self.driver.plug_vifs(instance, net_info)
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/virt/libvirt/driver.py", line
1386, in plug_vifs
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service self.vif_driver.plug(instance, vif)
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/virt/libvirt/vif.py", line
730, in plug
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service self.plug_hw_veb(instance, vif)
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/virt/libvirt/vif.py", line
628, in plug_hw_veb
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service set_vf_interface_vlan(
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/virt/libvirt/vif.py", line
99, in set_vf_interface_vlan
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service vf_ifname =
pci_utils.get_ifname_by_pci_address(pci_addr)
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service File "/opt/stack/nova/nova/pci/utils.py", line 170, in
get_ifname_by_pci_address
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service raise exception.PciDeviceNotFoundById(id=pci_addr)
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR
oslo_service.service nova.exception.PciDeviceNotFoundById: PCI device
0000:19:0a.7 not found
Jul 15 06:39:14 dell-r640-020 nova-compute[278453]: ERROR oslo_service.service
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