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[Xen-devel] [xen-4.7-testing baseline-only test] 72237: regressions - trouble: blocked/broken/fail/pass



This run is configured for baseline tests only.

flight 72237 xen-4.7-testing real [real]
http://osstest.xs.citrite.net/~osstest/testlogs/logs/72237/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-armhf-armhf-xl          16 guest-start/debian.repeat fail REGR. vs. 72212
 test-amd64-amd64-qemuu-nested-intel 13 xen-install/l1     fail REGR. vs. 72212
 test-amd64-amd64-xl-qemuu-win7-amd64 16 guest-localmigrate/x10 fail REGR. vs. 
72212
 test-armhf-armhf-xl-vhd      10 debian-di-install         fail REGR. vs. 72212

Tests which did not succeed, but are not blocking:
 test-arm64-arm64-libvirt-xsm  1 build-check(1)               blocked  n/a
 test-arm64-arm64-xl           1 build-check(1)               blocked  n/a
 build-arm64-libvirt           1 build-check(1)               blocked  n/a
 test-arm64-arm64-xl-credit2   1 build-check(1)               blocked  n/a
 test-arm64-arm64-xl-xsm       1 build-check(1)               blocked  n/a
 build-arm64                   2 hosts-allocate               broken never pass
 build-arm64-pvops             2 hosts-allocate               broken never pass
 build-arm64-xsm               2 hosts-allocate               broken never pass
 build-arm64-xsm               3 capture-logs                 broken never pass
 build-arm64                   3 capture-logs                 broken never pass
 build-arm64-pvops             3 capture-logs                 broken never pass
 test-amd64-i386-xl-qemuu-win10-i386 10 windows-install         fail never pass
 test-amd64-amd64-xl-qemuu-win10-i386 10 windows-install        fail never pass
 test-amd64-i386-xl-qemut-win10-i386 10 windows-install         fail never pass
 test-amd64-amd64-xl-qemuu-ws16-amd64 10 windows-install        fail never pass
 test-amd64-i386-xl-qemuu-ws16-amd64 10 windows-install         fail never pass
 test-amd64-amd64-libvirt-xsm 13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-xsm      13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-xsm      14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-midway   13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-midway   14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl          13 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt     13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl          14 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt     14 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt-xsm 13 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt-xsm 14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-multivcpu 13 migrate-support-check        fail  never pass
 test-armhf-armhf-xl-multivcpu 14 saverestore-support-check    fail  never pass
 test-armhf-armhf-xl-credit2  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit2  14 saverestore-support-check    fail   never pass
 test-amd64-amd64-xl-pvh-amd  12 guest-start                  fail   never pass
 test-amd64-i386-libvirt      13 migrate-support-check        fail   never pass
 test-amd64-amd64-xl-pvh-intel 15 guest-saverestore            fail  never pass
 test-amd64-i386-libvirt-xsm  13 migrate-support-check        fail   never pass
 test-amd64-amd64-xl-qemut-ws16-amd64 10 windows-install        fail never pass
 test-amd64-amd64-libvirt     13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-rtds     13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-rtds     14 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt-raw 12 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt-raw 13 saverestore-support-check    fail   never pass
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check 
fail never pass
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check 
fail never pass
 test-amd64-amd64-qemuu-nested-amd 17 debian-hvm-install/l1/l2  fail never pass
 test-amd64-i386-xl-qemut-ws16-amd64 13 guest-saverestore       fail never pass
 test-amd64-i386-xl-qemut-win7-amd64 17 guest-stop              fail never pass
 test-amd64-i386-xl-qemuu-win7-amd64 17 guest-stop              fail never pass
 test-amd64-amd64-xl-qemut-win7-amd64 17 guest-stop             fail never pass
 test-amd64-amd64-libvirt-vhd 12 migrate-support-check        fail   never pass
 test-amd64-amd64-xl-qemut-win10-i386 17 guest-stop             fail never pass

version targeted for testing:
 xen                  c10dc54d41695a074c90b8afed950bd63884de0b
baseline version:
 xen                  d6aad635097d901b96df650e87f04687c9fb7bd2

Last test of basis    72212  2017-10-07 10:18:39 Z    8 days
Testing same since    72237  2017-10-15 06:47:09 Z    0 days    1 attempts

------------------------------------------------------------
People who touched revisions under test:
  Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  George Dunlap <george.dunlap@xxxxxxxxxx>
  Jan Beulich <jbeulich@xxxxxxxx>
  Tim Deegan <tim@xxxxxxx>
  Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>

jobs:
 build-amd64-xsm                                              pass    
 build-arm64-xsm                                              broken  
 build-armhf-xsm                                              pass    
 build-i386-xsm                                               pass    
 build-amd64-xtf                                              pass    
 build-amd64                                                  pass    
 build-arm64                                                  broken  
 build-armhf                                                  pass    
 build-i386                                                   pass    
 build-amd64-libvirt                                          pass    
 build-arm64-libvirt                                          blocked 
 build-armhf-libvirt                                          pass    
 build-i386-libvirt                                           pass    
 build-amd64-prev                                             pass    
 build-i386-prev                                              pass    
 build-amd64-pvops                                            pass    
 build-arm64-pvops                                            broken  
 build-armhf-pvops                                            pass    
 build-i386-pvops                                             pass    
 build-amd64-rumprun                                          pass    
 build-i386-rumprun                                           pass    
 test-xtf-amd64-amd64-1                                       pass    
 test-xtf-amd64-amd64-2                                       pass    
 test-xtf-amd64-amd64-3                                       pass    
 test-xtf-amd64-amd64-4                                       pass    
 test-xtf-amd64-amd64-5                                       pass    
 test-amd64-amd64-xl                                          pass    
 test-arm64-arm64-xl                                          blocked 
 test-armhf-armhf-xl                                          fail    
 test-amd64-i386-xl                                           pass    
 test-amd64-amd64-xl-qemut-debianhvm-amd64-xsm                pass    
 test-amd64-i386-xl-qemut-debianhvm-amd64-xsm                 pass    
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm           pass    
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm            pass    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64-xsm                pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64-xsm                 pass    
 test-amd64-amd64-xl-qemut-stubdom-debianhvm-amd64-xsm        pass    
 test-amd64-i386-xl-qemut-stubdom-debianhvm-amd64-xsm         pass    
 test-amd64-amd64-libvirt-xsm                                 pass    
 test-arm64-arm64-libvirt-xsm                                 blocked 
 test-armhf-armhf-libvirt-xsm                                 pass    
 test-amd64-i386-libvirt-xsm                                  pass    
 test-amd64-amd64-xl-xsm                                      pass    
 test-arm64-arm64-xl-xsm                                      blocked 
 test-armhf-armhf-xl-xsm                                      pass    
 test-amd64-i386-xl-xsm                                       pass    
 test-amd64-amd64-qemuu-nested-amd                            fail    
 test-amd64-amd64-xl-pvh-amd                                  fail    
 test-amd64-i386-qemut-rhel6hvm-amd                           pass    
 test-amd64-i386-qemuu-rhel6hvm-amd                           pass    
 test-amd64-amd64-xl-qemut-debianhvm-amd64                    pass    
 test-amd64-i386-xl-qemut-debianhvm-amd64                     pass    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64                    pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64                     pass    
 test-amd64-i386-freebsd10-amd64                              pass    
 test-amd64-amd64-xl-qemuu-ovmf-amd64                         pass    
 test-amd64-i386-xl-qemuu-ovmf-amd64                          pass    
 test-amd64-amd64-rumprun-amd64                               pass    
 test-amd64-amd64-xl-qemut-win7-amd64                         fail    
 test-amd64-i386-xl-qemut-win7-amd64                          fail    
 test-amd64-amd64-xl-qemuu-win7-amd64                         fail    
 test-amd64-i386-xl-qemuu-win7-amd64                          fail    
 test-amd64-amd64-xl-qemut-ws16-amd64                         fail    
 test-amd64-i386-xl-qemut-ws16-amd64                          fail    
 test-amd64-amd64-xl-qemuu-ws16-amd64                         fail    
 test-amd64-i386-xl-qemuu-ws16-amd64                          fail    
 test-amd64-amd64-xl-credit2                                  pass    
 test-arm64-arm64-xl-credit2                                  blocked 
 test-armhf-armhf-xl-credit2                                  pass    
 test-amd64-i386-freebsd10-i386                               pass    
 test-amd64-i386-rumprun-i386                                 pass    
 test-amd64-amd64-xl-qemut-win10-i386                         fail    
 test-amd64-i386-xl-qemut-win10-i386                          fail    
 test-amd64-amd64-xl-qemuu-win10-i386                         fail    
 test-amd64-i386-xl-qemuu-win10-i386                          fail    
 test-amd64-amd64-qemuu-nested-intel                          fail    
 test-amd64-amd64-xl-pvh-intel                                fail    
 test-amd64-i386-qemut-rhel6hvm-intel                         pass    
 test-amd64-i386-qemuu-rhel6hvm-intel                         pass    
 test-amd64-amd64-libvirt                                     pass    
 test-armhf-armhf-libvirt                                     pass    
 test-amd64-i386-libvirt                                      pass    
 test-armhf-armhf-xl-midway                                   pass    
 test-amd64-amd64-migrupgrade                                 pass    
 test-amd64-i386-migrupgrade                                  pass    
 test-amd64-amd64-xl-multivcpu                                pass    
 test-armhf-armhf-xl-multivcpu                                pass    
 test-amd64-amd64-pair                                        pass    
 test-amd64-i386-pair                                         pass    
 test-amd64-amd64-libvirt-pair                                pass    
 test-amd64-i386-libvirt-pair                                 pass    
 test-amd64-amd64-amd64-pvgrub                                pass    
 test-amd64-amd64-i386-pvgrub                                 pass    
 test-amd64-amd64-pygrub                                      pass    
 test-amd64-amd64-xl-qcow2                                    pass    
 test-armhf-armhf-libvirt-raw                                 pass    
 test-amd64-i386-xl-raw                                       pass    
 test-amd64-amd64-xl-rtds                                     pass    
 test-armhf-armhf-xl-rtds                                     pass    
 test-amd64-amd64-libvirt-vhd                                 pass    
 test-armhf-armhf-xl-vhd                                      fail    


------------------------------------------------------------
sg-report-flight on osstest.xs.citrite.net
logs: /home/osstest/logs
images: /home/osstest/images

Logs, config files, etc. are available at
    http://osstest.xs.citrite.net/~osstest/testlogs/logs

Test harness code can be found at
    http://xenbits.xensource.com/gitweb?p=osstest.git;a=summary

broken-step build-arm64 hosts-allocate
broken-step build-arm64-pvops hosts-allocate
broken-step build-arm64-xsm hosts-allocate
broken-step build-arm64-xsm capture-logs
broken-step build-arm64 capture-logs
broken-step build-arm64-pvops capture-logs

Push not applicable.

------------------------------------------------------------
commit c10dc54d41695a074c90b8afed950bd63884de0b
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Thu Oct 12 15:30:21 2017 +0200

    x86/cpu: Fix IST handling during PCPU bringup
    
    Clear IST references in newly allocated IDTs.  Nothing good will come of
    having them set before the TSS is suitably constructed (although the chances
    of the CPU surviving such an IST interrupt/exception is extremely slim).
    
    Uniformly set the IST references after the TSS is in place.  This fixes an
    issue on AMD hardware, where onlining a PCPU while PCPU0 is in HVM context
    will cause IST_NONE to be copied into the new IDT, making that PCPU 
vulnerable
    to privilege escalation from PV guests until it subsequently schedules an 
HVM
    guest.
    
    This is XSA-244.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: cc08c73c8c1f5ba5ed0f8274548db6725e1c3157
    master date: 2017-10-12 14:50:31 +0200

commit 8cd1258b09c18a5657586d3e1cb6df5f2be0aee0
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Thu Oct 12 15:29:52 2017 +0200

    x86/shadow: Don't create self-linear shadow mappings for 4-level translated 
guests
    
    When initially creating a monitor table for 4-level translated guests, don't
    install a shadow-linear mapping.  This mapping is actually self-linear, and
    trips up the writeable heuristic logic into following Xen's mappings, not 
the
    guests' shadows it was expecting to follow.
    
    A consequence of this is that sh_guess_wrmap() needs to cope with there 
being
    no shadow-linear mapping present, which in practice occurs once each time a
    vcpu switches to 4-level paging from a different paging mode.
    
    An appropriate shadow-linear slot will be inserted into the monitor table
    either while constructing lower level monitor tables, or by sh_update_cr3().
    
    While fixing this, clarify the safety of the other mappings.  Despite
    appearing unsafe, it is correct to create a guest-linear mapping for
    translated domains; this is self-linear and doesn't point into the 
translated
    domain.  Drop a dead clause for translate != external guests.
    
    This is XSA-243.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Tim Deegan <tim@xxxxxxx>
    master commit: bf2b4eadcf379d0361b38de9725ea5f7a18a5205
    master date: 2017-10-12 14:50:07 +0200

commit 1d01ddc4ef0ee363d644bb1365fffe8d899410f4
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:29:21 2017 +0200

    x86: don't allow page_unlock() to drop the last type reference
    
    Only _put_page_type() does the necessary cleanup, and hence not all
    domain pages can be released during guest cleanup (leaving around
    zombie domains) if we get this wrong.
    
    This is XSA-242.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: 6410733a8a0dff2fe581338ff631670cf91889db
    master date: 2017-10-12 14:49:46 +0200

commit 5ca7d11d0b1467e747bdbc042754a7bb64582c4f
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:28:44 2017 +0200

    x86: don't store possibly stale TLB flush time stamp
    
    While the timing window is extremely narrow, it is theoretically
    possible for an update to the TLB flush clock and a subsequent flush
    IPI to happen between the read and write parts of the update of the
    per-page stamp. Exclude this possibility by disabling interrupts
    across the update, preventing the IPI to be serviced in the middle.
    
    This is XSA-241.
    
    Reported-by: Jann Horn <jannh@xxxxxxxxxx>
    Suggested-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    master commit: 23a183607a427572185fc51c76cc5ab11c00c4cc
    master date: 2017-10-12 14:48:25 +0200

commit ebd47d46c31e67bc207c66435bc586fee91f6df5
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:27:37 2017 +0200

    x86: limit linear page table use to a single level
    
    That's the only way that they're meant to be used. Without such a
    restriction arbitrarily long chains of same-level page tables can be
    built, tearing down of which may then cause arbitrarily deep recursion,
    causing a stack overflow. To facilitate this restriction, a counter is
    being introduced to track both the number of same-level entries in a
    page table as well as the number of uses of a page table in another
    same-level one (counting into positive and negative direction
    respectively, utilizing the fact that both counts can't be non-zero at
    the same time).
    
    Note that the added accounting introduces a restriction on the number
    of times a page can be used in other same-level page tables - more than
    32k of such uses are no longer possible.
    
    Note also that some put_page_and_type[_preemptible]() calls are
    replaced with open-coded equivalents.  This seemed preferrable to
    adding "parent_table" to the matrix of functions.
    
    Note further that cross-domain same-level page table references are no
    longer permitted (they probably never should have been).
    
    This is XSA-240.
    
    Reported-by: Jann Horn <jannh@xxxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    master commit: 6987fc7558bdbab8119eabf026e3cdad1053f0e5
    master date: 2017-10-12 14:44:34 +0200

commit 6a6a3394b68a06dd847eb60ad1e07896ff8f4457
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:27:07 2017 +0200

    x86/HVM: prefill partially used variable on emulation paths
    
    Certain handlers ignore the access size (vioapic_write() being the
    example this was found with), perhaps leading to subsequent reads
    seeing data that wasn't actually written by the guest. For
    consistency and extra safety also do this on the read path of
    hvm_process_io_intercept(), even if this doesn't directly affect what
    guests get to see, as we've supposedly already dealt with read handlers
    leaving data completely unitialized.
    
    This is XSA-239.
    
    Reported-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: 0d4732ac29b63063764c29fa3bd8946daf67d6f3
    master date: 2017-10-12 14:43:26 +0200

commit e61be54bfa548a6ecccdee87b7691efe00e02fc7
Author: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
Date:   Thu Oct 12 15:26:32 2017 +0200

    x86/ioreq server: correctly handle bogus 
XEN_DMOP_{,un}map_io_range_to_ioreq_server arguments
    
    Misbehaving device model can pass incorrect XEN_DMOP_map/
    unmap_io_range_to_ioreq_server arguments, namely end < start when
    specifying address range. When this happens we hit ASSERT(s <= e) in
    rangeset_contains_range()/rangeset_overlaps_range() with debug builds.
    Production builds will not trap right away but may misbehave later
    while handling such bogus ranges.
    
    This is XSA-238.
    
    Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: d59e55b018cfb79d0c4f794041aff4fe1cd0d570
    master date: 2017-10-12 14:43:02 +0200

commit e3f7a649f536490c86baf0448387303b22fd14b5
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:25:57 2017 +0200

    x86/FLASK: fix unmap-domain-IRQ XSM hook
    
    The caller and the FLASK implementation of xsm_unmap_domain_irq()
    disagreed about what the "data" argument points to in the MSI case:
    Change both sides to pass/take a PCI device.
    
    This is part of XSA-237.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: 6f17f5c43a3bd28d27ed8133b2bf513e2eab7d59
    master date: 2017-10-12 14:37:56 +0200

commit 957ad237e2d86122d8d2b2d1ed15ce159f5ab943
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:25:08 2017 +0200

    x86/IRQ: conditionally preserve irq <-> pirq mapping on map error paths
    
    Mappings that had been set up before should not be torn down when
    handling unrelated errors.
    
    This is part of XSA-237.
    
    Reported-by: HW42 <hw42@xxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    master commit: 573ac7b22aba9e5b8d40d9cdccd744af57cd5928
    master date: 2017-10-12 14:37:26 +0200

commit b1ae705c44f85545d9fb7ef06ef9a3d9b14245b2
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:24:35 2017 +0200

    x86/MSI: disallow redundant enabling
    
    At the moment, Xen attempts to allow redundant enabling of MSI by
    having pci_enable_msi() return 0, and point to the existing MSI
    descriptor, when the msi already exists.
    
    Unfortunately, if subsequent errors are encountered, the cleanup
    paths assume pci_enable_msi() had done full initialization, and
    hence undo everything that was assumed to be done by that
    function without also undoing other setup that would normally
    occur only after that function was called (in map_domain_pirq()
    itself).
    
    Rather than try to make the redundant enabling case work properly, just
    forbid it entirely by having pci_enable_msi() return -EEXIST when MSI
    is already set up.
    
    This is part of XSA-237.
    
    Reported-by: HW42 <hw42@xxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    master commit: a46126fec20e0cf4f5442352ef45efaea8c89646
    master date: 2017-10-12 14:36:58 +0200

commit 3add76f7a5ff985a15f5515b911781072830b0af
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:24:03 2017 +0200

    x86: enforce proper privilege when (un)mapping pIRQ-s
    
    (Un)mapping of IRQs, just like other RESOURCE__ADD* / RESOURCE__REMOVE*
    actions (in FLASK terms) should be XSM_DM_PRIV rather than XSM_TARGET.
    This in turn requires bypassing the XSM check in physdev_unmap_pirq()
    for the HVM emuirq case just like is being done in physdev_map_pirq().
    The primary goal security wise, however, is to no longer allow HVM
    guests, by specifying their own domain ID instead of DOMID_SELF, to
    enter code paths intended for PV guest and the control domains of HVM
    guests only.
    
    This is part of XSA-237.
    
    Reported-by: HW42 <hw42@xxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    master commit: db72faf69c94513e180568006a9d899ed422ff90
    master date: 2017-10-12 14:36:30 +0200

commit 314a8fcd4e6709c3032efc5b8c209e5cac560a8f
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Oct 12 15:23:20 2017 +0200

    x86: don't allow MSI pIRQ mapping on unowned device
    
    MSI setup should be permitted only for existing devices owned by the
    respective guest (the operation may still be carried out by the domain
    controlling that guest).
    
    This is part of XSA-237.
    
    Reported-by: HW42 <hw42@xxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: 3308374b1be7d43e23bd2e9eaf23ec06d7959882
    master date: 2017-10-12 14:35:14 +0200
(qemu changes not included)

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