On live migration with --p2p like:
 $ virsh migrate --live --p2p kvmguest-bionic-normal \
       qemu+ssh://10.6.221.80/system

We hit an apparmor deny like:
  apparmor="DENIED" operation="file_inherit"
  profile="/usr/sbin/libvirtd" pid=23477 comm="ssh" family="unix"
  sock_type="stream" protocol=0 requested_mask="send receive"
  denied_mask="send" addr=none peer_addr=none peer="unconfined"

The rule is not perfect, but can't be restricted further at the moment
(new upstream kernel features needed). For now the lack of a profile on the
peer as well as comm not being a conditional on rules do not allow to filter
further.

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
---
 examples/apparmor/usr.sbin.libvirtd | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/apparmor/usr.sbin.libvirtd b/examples/apparmor/usr.sbin.libvirtd
index 8d61d15..febe8a4 100644
--- a/examples/apparmor/usr.sbin.libvirtd
+++ b/examples/apparmor/usr.sbin.libvirtd
@@ -53,6 +53,9 @@
   network packet dgram,
   network packet raw,
 
+  # for --p2p migrations
+  unix (send, receive) type=stream addr=none peer=(label=unconfined addr=none),
+
   ptrace (trace) peer=unconfined,
   ptrace (trace) peer=/usr/sbin/libvirtd,
   ptrace (trace) peer=/usr/sbin/dnsmasq,
-- 
2.7.4

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On Tue, 2017-12-19 at 14:13 +0100, Christian Ehrhardt wrote:
> On live migration with --p2p like:
>  $ virsh migrate --live --p2p kvmguest-bionic-normal \
>        qemu+ssh://10.6.221.80/system
> 
> We hit an apparmor deny like:
>   apparmor="DENIED" operation="file_inherit"
>   profile="/usr/sbin/libvirtd" pid=23477 comm="ssh" family="unix"
>   sock_type="stream" protocol=0 requested_mask="send receive"
>   denied_mask="send" addr=none peer_addr=none peer="unconfined"
> 
> The rule is not perfect, but can't be restricted further at the
> moment
> (new upstream kernel features needed). For now the lack of a profile
> on the
> peer as well as comm not being a conditional on rules do not allow to
> filter
> further.
> 
> Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
> ---
>  examples/apparmor/usr.sbin.libvirtd | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/examples/apparmor/usr.sbin.libvirtd
> b/examples/apparmor/usr.sbin.libvirtd
> index 8d61d15..febe8a4 100644
> --- a/examples/apparmor/usr.sbin.libvirtd
> +++ b/examples/apparmor/usr.sbin.libvirtd
> @@ -53,6 +53,9 @@
>    network packet dgram,
>    network packet raw,
>  
> +  # for --p2p migrations
> +  unix (send, receive) type=stream addr=none peer=(label=unconfined
> addr=none),
> +

This rule is fine, but for completeness note that the upstream kernel
doesn't support unix rules yet. apparmor_parsers that do will handle
this rule fine though, so +1 to apply.

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On 12/19/2017 02:13 PM, Christian Ehrhardt wrote:
> On live migration with --p2p like:
>  $ virsh migrate --live --p2p kvmguest-bionic-normal \
>        qemu+ssh://10.6.221.80/system
> 
> We hit an apparmor deny like:
>   apparmor="DENIED" operation="file_inherit"
>   profile="/usr/sbin/libvirtd" pid=23477 comm="ssh" family="unix"
>   sock_type="stream" protocol=0 requested_mask="send receive"
>   denied_mask="send" addr=none peer_addr=none peer="unconfined"
> 
> The rule is not perfect, but can't be restricted further at the moment
> (new upstream kernel features needed). For now the lack of a profile on the
> peer as well as comm not being a conditional on rules do not allow to filter
> further.
> 
> Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
> ---
>  examples/apparmor/usr.sbin.libvirtd | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/examples/apparmor/usr.sbin.libvirtd b/examples/apparmor/usr.sbin.libvirtd
> index 8d61d15..febe8a4 100644
> --- a/examples/apparmor/usr.sbin.libvirtd
> +++ b/examples/apparmor/usr.sbin.libvirtd
> @@ -53,6 +53,9 @@
>    network packet dgram,
>    network packet raw,
>  
> +  # for --p2p migrations
> +  unix (send, receive) type=stream addr=none peer=(label=unconfined addr=none),
> +
>    ptrace (trace) peer=unconfined,
>    ptrace (trace) peer=/usr/sbin/libvirtd,
>    ptrace (trace) peer=/usr/sbin/dnsmasq,
> 

ACKed and pushed.

Michal

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