[vfio-users] Permissions problem on Fedora 27

[Alex Williamson]

On Fri, 17 Nov 2017 17:22:26 +0000
"Patrick O'Callaghan" <poc at usb.ve> wrote:

> Since upgrading to F27 yesterday I keep getting a pop-up error on trying to
> start my Win10 VM. The message says "unable to map backing store for guest
> RAM: Permission denied". I assume this is related to hugepages, which I
> use. The journal entry appears to be this:
> 
> 
> libvirtd[8610]: 2017-11-17T17:11:41.105867Z qemu-system-x86_64: unable
> to map backing store for guest RAM: Permission denied
> 
> 
> There doesn't appear to be an AVC denial record, but if I turn off SElinux,
> start the VM, then turn SElinux back on, it works.
> 
> Any ideas would be appreciated.

Certainly suggests an SElinux issue, file a bug at bugzilla.redhat.com
against the selinux-policy package in Fedora and include whatever
evidence you can find.  journalctl doesn't list any further errors?
Thanks,

Alex