Re: [Xen-devel] [BUG] Assertion '(sp == 0) || (peoi[sp-1].vector < vector)' failed at irq.c:1163

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 15/01/16 10:58, Håkon Alstadheim wrote:
> This is just a preliminary report, mostly just for the record.
>
> I will report again if this keeps happening after 4.7 is out, or upon
> request. Anyone working on this, please mail me and request more
> information. I have available logs from dom0 boot (I dump dmesg and xl
> dmesg to disk after every boot, and log dom0 serial console to disk).
> I will send boot logs if requested. I will turn on maximum verbosity
> and provide all output. My serial console is very slow, so I can not
> keep running at max verbosity all the time.
>
> At the end of this mail there is "xl info" and output from dom0 serial
> console.
>
> CPUINFO:
> vendor_id    : GenuineIntel
> cpu family    : 6
> model        : 63
> model name    : Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz
>
> # smbios-sys-info
> Libsmbios version:      2.2.28
> Product Name:           Z10PE-D8 WS
> Vendor:                 ASUSTeK COMPUTER INC.
> BIOS Version:           3101
>
> Dom0 OS:
> Linux gentoo 4.1.12-gentoo #1 SMP Sat Jan 2 09:36:31 CET 2016 x86_64
> Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz GenuineIntel GNU/Linux.
> Kernel is gentoo-sources, with experimental use-flag. Cpu type set to
> Haswell. Issue also happened without experimental.
> # cat /proc/cmdline
> placeholder root=LABEL=ssdroot ro
> xen-pciback.hide=(02:00.*)(08:00.*)(00:1b.*)(81:00.*)(82:00.*)(83:00.*) 
> console=hvc0
> console=vga domodules domdadm dolvm intel_iommu=on earlyprintk=xen
> usbcore.autosuspend=-1
>
> The system is mostly built with stable packages, xen and xen-tools
> keyworded to ~amd64.
>
> I have been experiencing issues with domains with passed through PCIe
> devices since I first installed xen. Then at version 4.5.x , I'm now
> at 4.6.0 with gentoo patches. Crashes SEEM mostly related to this pci
> pass through and interrupts (usb-cards, sound cards).
>
> Recently the system has been more stable, whether it is because I pass
> through as few things as possible, or because of improvements in Xen I
> do not know. I have also taken to building with debug, which leads to
> more abrupt but less mysterious failures. Earlier (w/o debug and under
> xen 4.5 ) stuff would just gradually stop working and end up in total
> hang of everything. So, hey, things are improving :-b

This isn't the first time we have seen this on Haswell processors. Do
you have microcode loading set up?

~Andrew

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