apparmor: allow unmounting .dev entries

With qemu 5.0 and libvirt 6.6 there are new apparmor denials:
  apparmor="DENIED" operation="umount" profile="libvirtd"
  name="/run/libvirt/qemu/1-kvmguest-groovy-norm.dev/" comm="rpc-worker"

These are related to new issues around devmapper handling [1] and the
error path triggered by these issues now causes this new denial.

There are already related rules for mounting and it seems right to
allow also the related umount.

[1]: https://www.redhat.com/archives/libvir-list/2020-August/msg00236.html

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Christian Ehrhardt 2020-08-07 09:05:04 +02:00
parent d9c21f4bfc
commit d61d8206f3
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@ -31,6 +31,7 @@ profile libvirtd @sbindir@/libvirtd flags=(attach_disconnected) {
mount options=(rw,rslave) -> /,
mount options=(rw, nosuid) -> /{var/,}run/libvirt/qemu/*.dev/,
umount /{var/,}run/libvirt/qemu/*.dev/,
# libvirt provides any mounts under /dev to qemu namespaces
mount options=(rw, move) /dev/ -> /{,var/}run/libvirt/qemu/*.dev/,