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[Xen-devel] [xen-4.8-testing baseline-only test] 74958: regressions - FAIL

This run is configured for baseline tests only.

flight 74958 xen-4.8-testing real [real]

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-amd64-i386-xl-qemuu-ovmf-amd64 15 guest-saverestore.2 fail REGR. vs. 74889

Tests which did not succeed, but are not blocking:
 test-amd64-amd64-xl-qemut-win10-i386 10 windows-install        fail like 74889
 test-armhf-armhf-libvirt     12 guest-start                  fail   like 74889
 test-armhf-armhf-libvirt-xsm 12 guest-start                  fail   like 74889
 test-armhf-armhf-xl-multivcpu 12 guest-start                  fail  like 74889
 test-armhf-armhf-xl-credit2  12 guest-start                  fail   like 74889
 test-armhf-armhf-xl-midway   12 guest-start                  fail   like 74889
 test-armhf-armhf-xl-xsm      12 guest-start                  fail   like 74889
 test-armhf-armhf-xl          12 guest-start                  fail   like 74889
 test-armhf-armhf-xl-rtds     12 guest-start                  fail   like 74889
 test-amd64-amd64-qemuu-nested-intel 14 xen-boot/l1             fail like 74889
 test-armhf-armhf-xl-vhd      10 debian-di-install            fail   like 74889
 test-armhf-armhf-libvirt-raw 10 debian-di-install            fail   like 74889
 test-amd64-i386-xl-qemuu-win7-amd64 17 guest-stop              fail like 74889
 test-amd64-i386-xl-qemut-win7-amd64 17 guest-stop              fail like 74889
 test-amd64-amd64-xl-qemut-win7-amd64 17 guest-stop             fail like 74889
 build-amd64-prev              7 xen-build/dist-test          fail   never pass
 test-amd64-amd64-xl-qemuu-win10-i386 10 windows-install        fail never pass
 test-amd64-amd64-libvirt-xsm 13 migrate-support-check        fail   never pass
 test-amd64-i386-xl-qemuu-ws16-amd64 10 windows-install         fail never pass
 test-amd64-i386-libvirt-xsm  13 migrate-support-check        fail   never pass
 build-i386-prev               7 xen-build/dist-test          fail   never pass
 test-amd64-amd64-libvirt     13 migrate-support-check        fail   never pass
 test-amd64-i386-libvirt      13 migrate-support-check        fail   never pass
 test-amd64-amd64-xl-qemuu-ws16-amd64 10 windows-install        fail never pass
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check 
fail never pass
 test-amd64-amd64-libvirt-vhd 12 migrate-support-check        fail   never pass
 test-amd64-i386-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-win10-i386 17 guest-stop              fail never pass
 test-amd64-i386-xl-qemuu-win10-i386 17 guest-stop              fail never pass
 test-amd64-amd64-xl-qemuu-win7-amd64 17 guest-stop             fail never pass
 test-amd64-amd64-xl-qemut-ws16-amd64 17 guest-stop             fail never pass
 test-amd64-i386-xl-qemut-ws16-amd64 17 guest-stop              fail never pass

version targeted for testing:
 xen                  e39ff386f626ba44f8a9a9608d8f5f13ff7945ef
baseline version:
 xen                  c1aaad5627448a84c4e49304d89b11a8e6f588e7

Last test of basis    74889  2018-06-19 16:50:54 Z   22 days
Testing same since    74958  2018-07-12 02:22:46 Z    0 days    1 attempts

People who touched revisions under test:
  Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
  Jan Beulich <jbeulich@xxxxxxxx>
  Juergen Gross <jgross@xxxxxxxx>

 build-amd64-xsm                                              pass    
 build-armhf-xsm                                              pass    
 build-i386-xsm                                               pass    
 build-amd64-xtf                                              pass    
 build-amd64                                                  pass    
 build-armhf                                                  pass    
 build-i386                                                   pass    
 build-amd64-libvirt                                          pass    
 build-armhf-libvirt                                          pass    
 build-i386-libvirt                                           pass    
 build-amd64-prev                                             pass    
 build-i386-prev                                              pass    
 build-amd64-pvops                                            pass    
 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-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-armhf-armhf-libvirt-xsm                                 fail    
 test-amd64-i386-libvirt-xsm                                  pass    
 test-amd64-amd64-xl-xsm                                      pass    
 test-armhf-armhf-xl-xsm                                      fail    
 test-amd64-i386-xl-xsm                                       pass    
 test-amd64-amd64-qemuu-nested-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                          fail    
 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-armhf-armhf-xl-credit2                                  fail    
 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-i386-qemut-rhel6hvm-intel                         pass    
 test-amd64-i386-qemuu-rhel6hvm-intel                         pass    
 test-amd64-amd64-libvirt                                     pass    
 test-armhf-armhf-libvirt                                     fail    
 test-amd64-i386-libvirt                                      pass    
 test-amd64-amd64-livepatch                                   pass    
 test-amd64-i386-livepatch                                    pass    
 test-armhf-armhf-xl-midway                                   fail    
 test-amd64-amd64-migrupgrade                                 pass    
 test-amd64-i386-migrupgrade                                  pass    
 test-amd64-amd64-xl-multivcpu                                pass    
 test-armhf-armhf-xl-multivcpu                                fail    
 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                                 fail    
 test-amd64-i386-xl-raw                                       pass    
 test-amd64-amd64-xl-rtds                                     pass    
 test-armhf-armhf-xl-rtds                                     fail    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64-shadow             pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64-shadow              pass    
 test-amd64-amd64-xl-shadow                                   pass    
 test-amd64-i386-xl-shadow                                    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

Test harness code can be found at

Push not applicable.

commit e39ff386f626ba44f8a9a9608d8f5f13ff7945ef
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Jun 28 11:23:33 2018 +0200

    x86/HVM: don't cause #NM to be raised in Xen
    The changes for XSA-267 did not touch management of CR0.TS for HVM
    guests. In fully eager mode this bit should never be set when
    respective vCPU-s are active, or else hvmemul_get_fpu() might leave it
    wrongly set, leading to #NM in hypervisor context.
    {svm,vmx}_enter() and {svm,vmx}_fpu_dirty_intercept() become unreachable
    this way. Explicit {svm,vmx}_fpu_leave() invocations need to be guarded
    With no CR0.TS management necessary in fully eager mode, there's also no
    need anymore to intercept #NM.
    Reported-by: Charles Arnold <carnold@xxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: 488efc29e4e996bb3805c982200f65061390cdce
    master date: 2018-06-28 09:07:06 +0200

commit 321254a107fe695a84c45acadcec842e36fe8bbf
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Thu Jun 28 11:23:11 2018 +0200

    libxl: restore passing "readonly=" to qemu for SCSI disks
    A read-only check was introduced for XSA-142, commit ef6cb76026 ("libxl:
    relax readonly check introduced by XSA-142 fix") added the passing of
    the extra setting, but commit dab0539568 ("Introduce COLO mode and
    refactor relevant function") dropped the passing of the setting again,
    quite likely due to improper re-basing.
    Restore the readonly= parameter to SCSI disks.  For IDE disks this is
    supposed to be rejected; add an assert.  And there is a bare ad-hoc
    disk drive string in libxl__build_device_model_args_new, which we also
    This is XSA-266.
    Reported-by: Andrew Reimers <andrew.reimers@xxxxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Signed-off-by: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
    master commit: dd64d3c41a2d15139c3a35d22d4cb6b78f4c5c59
    master date: 2018-06-28 09:05:06 +0200

commit 500d567b08ef890dddafdfaf0ac47ee63a48a0dd
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Thu Jun 28 11:22:55 2018 +0200

    libxl: qemu_disk_scsi_drive_string: Break out common parts of disk config
    The generated configurations are identical apart from, in some cases,
    reordering of the id=%s element.  So, overall, no functional change.
    This is part of XSA-266.
    Reported-by: Andrew Reimers <andrew.reimers@xxxxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Signed-off-by: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
    master commit: 724e5aa31b58d1e430ad36b484cf0ec021497399
    master date: 2018-06-28 09:04:55 +0200

commit 5fd28d27d3f7840e4c6724e67936fed57a638155
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Thu Jun 28 11:22:30 2018 +0200

    x86: Refine checks in #DB handler for faulting conditions
    One of the fix for XSA-260 (c/s 75d6828bc2 "x86/traps: Fix handling of #DB
    exceptions in hypervisor context") added some safety checks to help avoid
    livelocks of #DB faults.
    While a General Detect #DB exception does have fault semantics, hardware
    clears %dr7.gd on entry to the handler, meaning that it is actually safe to
    return to.  Furthermore, %dr6.gd is guest controlled and sticky (never 
    by hardware).  A malicious PV guest can therefore trigger the fatal_trap() 
    crash Xen.
    Instruction breakpoints are more tricky.  The breakpoint match bits in %dr6
    are not sticky, but the Intel manual warns that they may be set for
    non-enabled breakpoints, so add a breakpoint enabled check.
    Beyond that, because of the restriction on the linear addresses PV guests 
    set, and the fault (rather than trap) nature of instruction breakpoints
    (i.e. can't be deferred by a MovSS shadow), there should be no way to
    encounter an instruction breakpoint in Xen context.  However, for extra
    robustness, deal with this situation by clearing the breakpoint 
    rather than crashing.
    This is XSA-265
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: 17bf51297220dcd74da29de99320b6b1c72d1fa5
    master date: 2018-06-28 09:04:20 +0200

commit d6154125d7a3d3d270d9888c0179ae6461b6bab0
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Jun 28 11:21:57 2018 +0200

    x86/mm: don't bypass preemption checks
    While unlikely, it is not impossible for a multi-vCPU guest to leverage
    bypasses of preemption checks to drive Xen into an unbounded loop.
    This is XSA-264.
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: 17608703c65bf080b0a9f024f9b370872b9f2c05
    master date: 2018-06-28 09:03:09 +0200

commit 9a7fa685f999c5166f3a4688e2596f3a9f36a9cf
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Jun 28 11:20:24 2018 +0200

    x86/EFI: further correct FPU state handling around runtime calls
    We must not leave a vCPU with CR0.TS clear when it is not in fully eager
    mode and has not touched non-lazy state. Instead of adding a 3rd
    invocation of stts() to vcpu_restore_fpu_eager(), consolidate all of
    them into a single one done at the end of the function.
    Rename the function at the same time to better reflect its purpose, as
    the patches touches all of its occurences anyway.
    The new function parameter is not really well named, but
    "need_stts_if_not_fully_eager" seemed excessive to me.
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
    master commit: 23839a0fa0bbe78c174cd2bb49083e153f0f99df
    master date: 2018-06-26 15:23:08 +0200

commit b736afdea436f8028342f8305c037a0e89d23753
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Jun 28 11:19:43 2018 +0200

    x86/EFI: fix FPU state handling around runtime calls
    There are two issues.  First, the nonlazy xstates were never restored
    after returning from the runtime call.
    Secondly, with the fully_eager_fpu mitigation for XSA-267 / LazyFPU, the
    unilateral stts() is no longer correct, and hits an assertion later when
    a lazy state restore tries to occur for a fully eager vcpu.
    Fix both of these issues by calling vcpu_restore_fpu_eager().  As EFI
    runtime services can be used in the idle context, the idle assertion
    needs to move until after the fully_eager_fpu check.
    Introduce a "curr" local variable and replace other uses of "current"
    at the same time.
    Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Tested-by: Juergen Gross <jgross@xxxxxxxx>
    master commit: 437211cb696515ee5bd5dae0ab72866c9f382a33
    master date: 2018-06-21 11:35:46 +0200

commit b9b9d9ed1d3205d0256eb8baab22a95e9b75313c
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Jun 28 11:18:50 2018 +0200

    x86: correct default_xen_spec_ctrl calculation
    Even with opt_msr_sc_{pv,hvm} both false we should set up the variable
    as usual, to ensure proper one-time setup during boot and CPU bringup.
    This then also brings the code in line with the comment immediately
    ahead of the printk() being modified saying "irrespective of guests".
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: d6239f64713df819278bf048446d3187c6ac4734
    master date: 2018-05-29 12:38:52 +0200

commit 028656f0424fad1a9626ee05737d7bd2b271c2ce
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Thu Jun 28 11:18:06 2018 +0200

    libxc/x86/PV: don't hand through CPUID leaf 0x80000008 as is
    Just like for HVM the feature set should be used for EBX output, while
    EAX should be restricted to the low 16 bits and ECX/EDX should be zero.
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: 849cc9ac56eff8a8d575ed9f484aad72f383862c
    master date: 2018-05-29 10:51:02 +0100
(qemu changes not included)

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