[Xen-bugs] [Bug 1457] New: PCI configuration space header is corrupted after device pass-through

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1457

           Summary: PCI configuration space header is corrupted after device
                    pass-through
           Product: Xen
           Version: unstable
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: critical
          Priority: P1
         Component: Hypervisor
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: haicheng.li@xxxxxxxxx


Environment:
------------
Service Arch (ia32/ia32e/IA64): ia32
Guest Arch (ia32/ia32e/IA64): 
Guest OS Type (Linux/Windows):all
Change Set: 19575
Hardware: Stoakley PAE
Other:

Bug detailed description:
can not detach pass-through device(including statically assigned and
hot-plugged device) from guest against C/s 19575.

Xen dmesg Log:
(XEN) stdvga.c:151:d2 leaving stdvga
(XEN) common.c:3599:d0 stopping tracking VRAM f0000 - f0026
(XEN) common.c:3623:d0 tracking VRAM f0000 - f0160
(XEN) [VT-D]iommu.c:1364:d0 domain_context_unmap:PCI: bdf = 6:1.0
(XEN) [VT-D]iommu.c:1252:d0 domain_context_mapping:PCI: bdf = 6:1.0
(XEN) [VT-D]io.c:251:d0 VT-d irq bind: m_irq = 15 device = 5 intx = 0
(XEN) domctl.c:835:d0 memory_map:add: gfn=fbeff mfn=d8300 nr_mfns=1
(XEN) domctl.c:886:d0 ioport_map:add f_gport=ffc0 f_mport=3000 np=40
(XEN) domctl.c:835:d0 memory_map:add: gfn=fbf00 mfn=d8200 nr_mfns=100
(XEN) domctl.c:845:d0 memory_map:remove: gfn=fbeff mfn=d8300 nr_mfns=1
(XEN) domctl.c:910:d0 ioport_map:remove f_gport=ffc0 f_mport=3000 np=40
(XEN) domctl.c:845:d0 memory_map:remove: gfn=fbf00 mfn=d8200 nr_mfns=100
(XEN) io.c:276:d0 pt_irq_destroy_bind_vtd: machine_gsi=21 guest_gsi=36,
device=5, intx=0.
(XEN) io.c:331:d0 XEN_DOMCTL_irq_unmapping: m_irq = 15 device = 5 intx = 0
(XEN) [VT-D]iommu.c:1364:d0 domain_context_unmap:PCI: bdf = 6:1.0
(XEN) [VT-D]iommu.c:1252:d0 domain_context_mapping:PCI: bdf = 6:1.0
(XEN) domctl.c:757:d0 XEN_DOMCTL_deassign_device: bdf = 6:1:0
(XEN) [VT-D]iommu.c:247:d0 IOMMU: deassign a device not owned
(XEN) domctl.c:757:d0 XEN_DOMCTL_deassign_device: bdf = 6:1:0


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