[libvirt PATCH 1/1] apparmor: Allow umount(/dev)

[Michal Prívozník]

On 1/18/23 10:43, Andrea Bolognani wrote:
> Commit 379c0ce4bfed introduced a call to umount(/dev) performed
> inside the namespace that we run QEMU in.
> 
> As a result of this, on machines using AppArmor, VM startup now
> fails with
> 
>   internal error: Process exited prior to exec: libvirt:
>   QEMU Driver error: failed to umount devfs on /dev: Permission denied
> 
> The corresponding denial is
> 
>   AVC apparmor="DENIED" operation="umount" profile="libvirtd"
>       name="/dev/" pid=70036 comm="rpc-libvirtd"
> 
> Extend the AppArmor configuration for virtqemud and libvirtd so
> that this operation is allowed.
> 
> Signed-off-by: Andrea Bolognani <abologna at redhat.com>
> ---
>  src/security/apparmor/usr.sbin.libvirtd.in  | 1 +
>  src/security/apparmor/usr.sbin.virtqemud.in | 1 +
>  2 files changed, 2 insertions(+)

Reviewed-by: Michal Privoznik <mprivozn at redhat.com>

For more background on why umount is needed see my reply to Jim's
question from earlier:

https://listman.redhat.com/archives/libvir-list/2023-January/237149.html

Michal