File ef482951-apparmor-Allow-umount-dev.patch of Package libvirt.29326

From b0d070a9b2d655c1bda5980c8176454fe7ee00b1 Mon Sep 17 00:00:00 2001
From: Andrea Bolognani <abologna@redhat.com>
Date: Wed, 18 Jan 2023 10:28:04 +0100
Subject: [PATCH] apparmor: Allow umount(/dev)

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@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
(cherry picked from commit ef4829510549ec68cf80774e98b200a3e7bbe51f)
---
 src/security/apparmor/usr.sbin.libvirtd.in  | 1 +
 src/security/apparmor/usr.sbin.virtqemud.in | 1 +
 2 files changed, 2 insertions(+)

Index: libvirt-9.0.0/src/security/apparmor/usr.sbin.libvirtd.in
===================================================================
--- libvirt-9.0.0.orig/src/security/apparmor/usr.sbin.libvirtd.in
+++ libvirt-9.0.0/src/security/apparmor/usr.sbin.libvirtd.in
@@ -35,6 +35,7 @@ profile libvirtd @sbindir@/libvirtd flag
   mount options=(rw,rslave)  -> /,
   mount options=(rw, nosuid) -> /{var/,}run/libvirt/qemu/*.dev/,
   umount /{var/,}run/libvirt/qemu/*.dev/,
+  umount /dev/,
 
   # libvirt provides any mounts under /dev to qemu namespaces
   mount options=(rw, move) /dev/ -> /{,var/}run/libvirt/qemu/*.dev/,
Index: libvirt-9.0.0/src/security/apparmor/usr.sbin.virtqemud.in
===================================================================
--- libvirt-9.0.0.orig/src/security/apparmor/usr.sbin.virtqemud.in
+++ libvirt-9.0.0/src/security/apparmor/usr.sbin.virtqemud.in
@@ -35,6 +35,7 @@ profile virtqemud @sbindir@/virtqemud fl
   mount options=(rw,rslave)  -> /,
   mount options=(rw, nosuid) -> /{var/,}run/libvirt/qemu/*.dev/,
   umount /{var/,}run/libvirt/qemu/*.dev/,
+  umount /dev/,
 
   # libvirt provides any mounts under /dev to qemu namespaces
   mount options=(rw, move) /dev/ -> /{,var/}run/libvirt/qemu/*.dev/,