** Description changed:
[ Impact ]
- * At libvirt restart; VM guests cannot be run if they have mounts
+ * At libvirt restart; VM guests cannot be run if they have mounts
[ Test Plan ]
- * Create a libvirt VM
- * Add a mount point
- * Restart libvirtd
-
+ * Create a libvirt VM with a memory shared:
+
+ <memoryBacking>
+ <source type='memfd'/>
+ <access mode='shared'/>
+ </memoryBacking>
+
+ * Restart libvirtd
+
[ Where problems could occur ]
- * This adds a rules to allow VMs to do umounts
- We could potentially have issues with apparmor allowing access we do not
- intend to grant to the VMs
-
+ * This adds a rules to allow VMs to do umounts
+ We could potentially have issues with apparmor allowing access we do not
+ intend to grant to the VMs
--- Original bug report ---
-
After upgrading from 22.04 to 24.04, libvirt/kvm guests won't start with
`error: internal error: Process exited prior to exec: libvirt: error : Cannot
delete directory ‘/run/libvirt/qemu/2-Test.shm’: Device or resource busy`
openSUSE had the same issue, and their fix[1] was to add
`umount /{var/,}run/libvirt/qemu/*{,/},`
to the libvirtd apparmor profile.
I tried this, and it works for me.
libvirt-daemon-system 10.0.0-2ubuntu8.7
[1] https://forums.opensuse.org/t/kvm-cannot-create-virtual-machine-
libvirt-error-cannot-delete-directory-run-libvirt-qemu-2-test-shm-
device-or-resource-busy/175989/4
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: libvirt-daemon-system 10.0.0-2ubuntu8.7
ProcVersionSignature: Ubuntu 6.11.0-29.29~24.04.1-generic 6.11.11
Uname: Linux 6.11.0-29-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Wed Jul 16 11:07:56 2025
InstallationDate: Installed on 2019-02-20 (2338 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
SourcePackage: libvirt
UpgradeStatus: Upgraded to noble on 2025-07-15 (1 days ago)
modified.conffile..etc.apparmor.d.usr.sbin.libvirtd: [modified]
modified.conffile..etc.libvirt.libvirtd.conf: [modified]
mtime.conffile..etc.apparmor.d.usr.sbin.libvirtd: 2025-07-15T17:25:56.500724
mtime.conffile..etc.libvirt.libvirtd.conf: 2025-07-15T15:27:16.700732
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https://bugs.launchpad.net/bugs/2117037
Title:
Missing apparmor rule in usr.sbin.libvirtd
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