Re: Fedora kernel crashing in virtio when running on qemu

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On Tue, 2017-03-21 at 20:48 +0000, Richard W.M. Jones wrote:
> On Tue, Mar 21, 2017 at 12:58:06PM -0700, Adam Williamson wrote:
> > On Tue, 2017-03-21 at 19:40 +0000, Richard W.M. Jones wrote:
> > > https://bugzilla.redhat.com/show_bug.cgi?id=1430297
> > > 
> > > This has been going on for a few weeks with no attention.  It prevents
> > > anyone from running libguestfs on Fedora 26.
> > > 
> > > It's (IMHO) pretty serious for anyone using virtualization: "kernel
> > > doesn't boot on qemu" should be a blocker for a Fedora release.
> > > 
> > > Can anyone see what's going on?
> > 
> > The earlier case looks like
> > https://bugzilla.redhat.com/show_bug.cgi?id=1430043 , which was fixed
> > in rc2. I'm not sure about the latter case, though Thorsten Leemhuis
> > reported intermittent crash / hang during boot with rc2 as:
> > 
> > https://bugzilla.kernel.org/show_bug.cgi?id=194911
> > 
> > Since rc2 I've seen occasional failures which are probably the same as
> > the ones Thorsten was seeing, but usually it works OK. I run 26-on-26
> > VMs via virt-manager quite a lot, they certainly don't fail every time.
> 
> Does libguestfs-test-tool work for you in F26?

Hum, interesting results:

If I run it as a regular user, it works.
If I run it as root as usual, it gives me a libvirt error, some
permission issue.
If I run it as root with LIBGUESTFS_BACKEND=direct , it hits the same
kernel trace you hit.
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net
http://www.happyassassin.net
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