Re: [Xen-devel] [BUG] Xen vm kernel crash in get_free_entries.

[Astarta <astarta@xxxxxx>]

On 10/16/2013 06:17 PM, Pasi KÃrkkÃinen wrote:
> On Wed, Oct 16, 2013 at 02:29:07PM +0100, David Vrabel wrote:
> > On 16/10/13 07:28, Astarta wrote:
> > > Hello,
> > >
> > > This is a some kind of a follow up to the
> > > http://lists.xen.org/archives/html/xen-devel/2013-09/msg03109.html (
> > > Linux 3.11.1 HVM guest kernel crash when started with xl
> > > (get_free_entries)).
> > >
> > > Looks like we've here the similar issue.
> > >
> > > Xen VM with 3.8.13 kernel crashes in get_free_entries (kernel BUG at
> > > drivers/xen/grant-table.c:1181!), i.e in:
> > > BUG_ON(grefs_per_grant_frame == 0);. 3.11.5 kernel behaves in exactly
> > > the same way.
> > >
> > > Whole kernel log is attached. It does not contain  any "Grant tables
> > > using version" message.
> > >
> > > Seems that gnttab_request_version() has was never executed, so
> > > grefs_per_grant_frame was never set.
> > >
> > > Could you please advice on this issue?
> > I think you're missing the platform pci device required for PVHVM.
> > What's your VM's xl.cfg?
> Yes, exactly, I had "xen_platform_pci=0" in my VM's xl.cfg,
> and I assume Astarta has aswell.
>
> That is because I wanted to test *without* PVHVM, and that is a valid 
> configuration imho..
> (and works OK with xm/xend).
>
> -- Pasi
Thanks for the suggestion, but there is no xl.cfg in /etc/xen/ (we're 
using Citrix XenServer Host 6.2.0-70446c
 on rhel 6.2), so there is no where to edit xen_platform_pci option.

I've attached output from xe vm-list params=all for one of the problem 
vm. Hope its also ok.
Also 3.6 kernel works well with that configuration. I can provide it's 
boot log if needed.
Please suggest.

--
Marina

Attachment: vm.txt
Description: Text document

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel