Re: [Xen-devel] Xen 4.1 rc5 outstanding bugs

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Mon, Feb 21, 2011 at 11:05, Stefano Stabellini
<stefano.stabellini@xxxxxxxxxxxxx> wrote:
> On Mon, 21 Feb 2011, Jan Beulich wrote:
>> >>> On 18.02.11 at 19:59, Stefano Stabellini 
>> >>> <stefano.stabellini@xxxxxxxxxxxxx> wrote:
>> > Â* ÂXen panic on guest shutdown with PCI Passthrough
>> > http://xen.1045712.n5.nabble.com/Xen-panic-on-guest-shutdown-with-PCI-Passthrough-tt
>> > 3371337.html#none
>> > When the guest with a passthrough pci device is shut down, Xen panic
>> > on a NMI - MEMORY ERROR.
>> > (XEN) Xen call trace:
>> > (XEN) Â Â[<ffff82c48015f032>] msi_set_mask_bit+0xea/0x121
>> > (XEN) Â Â[<ffff82c48015f087>] mask_msi_irq+0xe/0x10
>> > (XEN) Â Â[<ffff82c480162fb1>] __pirq_guest_unbind+0x298/0x2aa
>> > (XEN) Â Â[<ffff82c48016315c>] unmap_domain_pirq+0x199/0x307
>> > (XEN) Â Â[<ffff82c480163321>] free_domain_pirqs+0x57/0x83
>> > (XEN) Â Â[<ffff82c48015642a>] arch_domain_destroy+0x30/0x2e3
>> > (XEN) Â Â[<ffff82c480104c59>] complete_domain_destroy+0x6e/0x12a
>> > (XEN) Â Â[<ffff82c48012adfd>] rcu_process_callbacks+0x173/0x1e1
>> > (XEN) Â Â[<ffff82c480123327>] __do_softirq+0x88/0x99
>> > (XEN) Â Â[<ffff82c4801233a2>] do_softirq+0x6a/0x7a
>>
>> Are you sure you want to consider this one severe? Xen by itself
>> can't cause NMIs (unless sending IPIs as such, which certainly isn't
>> the case here), and iirc from the mailing list post corresponding to
>> this it's being observed only on a single (with the above presumably
>> buggy) system.
>
> Good point. We should have another identical machine, we'll try to
> reproduce it there.

I have the same issue on another identical machine.

Host: Dell System PowerEdge R310

Dom0: Debian Squeeze with Kernel dom0 2.6.32.27
Xen 4.1-rc6-pre
Guest: Debian lenny with default kernel.

pci devices:
Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet
02:00.0 -> passthrough to guest
02:00.1 -> keep as network card for dom0

A bug report have been filled here:
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1744

-- 
Anthony PERARD

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