I tried your suggestion on my main 16.04.3 test server. I edited /etc/apparmor/parser.conf, keeping an "original copy" first.
And used "the hand edited features 4.14 feature file attached".
It made things worse, as in addition to mysql and libvirt not starting, now the network doesn't start either.
I restored /etc/apparmor/parser.conf and changed my GRUB_CMDLINE_LINUX_DEFAULT in grub, adding "apparmor=0". and now everything is fine using the Ubuntu mainline kernel 4.14-rc5.
@John:
I tried your suggestion on my main 16.04.3 test server. I edited /etc/apparmor/ parser. conf, keeping an "original copy" first.
And used "the hand edited features 4.14 feature file attached".
It made things worse, as in addition to mysql and libvirt not starting, now the network doesn't start either.
I restored /etc/apparmor/ parser. conf and changed my GRUB_CMDLINE_ LINUX_DEFAULT in grub, adding "apparmor=0". and now everything is fine using the Ubuntu mainline kernel 4.14-rc5.