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[Xen-devel] [xen-4.6-testing test] 100771: regressions - FAIL

flight 100771 xen-4.6-testing real [real]

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-amd64-i386-xl-qemuu-winxpsp3 17 guest-start/win.repeat fail REGR. vs. 

Regressions which are regarded as allowable (not blocking):
 test-amd64-i386-xl-qemuu-win7-amd64 16 guest-stop             fail like 100630
 test-amd64-i386-xl-qemut-win7-amd64 16 guest-stop             fail like 100630
 test-amd64-amd64-xl-qemut-win7-amd64 16 guest-stop            fail like 100630
 test-amd64-amd64-xl-qemuu-win7-amd64 16 guest-stop            fail like 100630
 test-armhf-armhf-xl-rtds     11 guest-start                  fail  like 100630

Tests which did not succeed, but are not blocking:
 test-amd64-amd64-rumprun-amd64  1 build-check(1)               blocked  n/a
 test-amd64-i386-rumprun-i386  1 build-check(1)               blocked  n/a
 build-amd64-rumprun           5 rumprun-build                fail   never pass
 build-i386-rumprun            5 rumprun-build                fail   never pass
 test-amd64-amd64-xl-pvh-intel 11 guest-start                  fail  never pass
 test-amd64-amd64-libvirt     12 migrate-support-check        fail   never pass
 test-amd64-i386-libvirt-xsm  12 migrate-support-check        fail   never pass
 test-amd64-amd64-libvirt-xsm 12 migrate-support-check        fail   never pass
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm 10 migrate-support-check 
fail never pass
 test-amd64-i386-libvirt      12 migrate-support-check        fail   never pass
 test-amd64-amd64-xl-pvh-amd  11 guest-start                  fail   never pass
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 10 migrate-support-check 
fail never pass
 test-armhf-armhf-libvirt-xsm 12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-arndale  12 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt-xsm 14 guest-saverestore            fail   never pass
 test-armhf-armhf-xl-arndale  13 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-credit2  12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit2  13 saverestore-support-check    fail   never pass
 test-amd64-amd64-libvirt-vhd 11 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-multivcpu 12 migrate-support-check        fail  never pass
 test-armhf-armhf-xl-multivcpu 13 saverestore-support-check    fail  never pass
 test-amd64-amd64-qemuu-nested-amd 16 debian-hvm-install/l1/l2  fail never pass
 test-armhf-armhf-libvirt-raw 11 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt-raw 13 guest-saverestore            fail   never pass
 test-armhf-armhf-xl          12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl          13 saverestore-support-check    fail   never pass
 test-armhf-armhf-libvirt-qcow2 11 migrate-support-check        fail never pass
 test-armhf-armhf-libvirt-qcow2 13 guest-saverestore            fail never pass
 test-armhf-armhf-xl-cubietruck 12 migrate-support-check        fail never pass
 test-armhf-armhf-xl-cubietruck 13 saverestore-support-check    fail never pass
 test-armhf-armhf-libvirt     12 migrate-support-check        fail   never pass
 test-armhf-armhf-libvirt     14 guest-saverestore            fail   never pass
 test-armhf-armhf-xl-xsm      12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-xsm      13 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-vhd      11 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-vhd      12 saverestore-support-check    fail   never pass

version targeted for testing:
 xen                  4627e5e5f10bf8cdebaf45b66a476c4adb104f6d
baseline version:
 xen                  a00a0f9139c4b3a9db8e74aca0ac0808e6f7d65b

Last test of basis   100630  2016-08-26 08:43:05 Z   11 days
Testing same since   100771  2016-09-06 13:10:38 Z    0 days    1 attempts

People who touched revisions under test:
  Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  Dario Faggioli <dario.faggioli@xxxxxxxxxx>
  George Dunlap <george.dunlap@xxxxxxxxxx>
  George Dunlap <george.dunlap@xxxxxxxxxxxxx>
  Jan Beulich <jbeulich@xxxxxxxx>
  Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>

 build-amd64-xsm                                              pass    
 build-armhf-xsm                                              pass    
 build-i386-xsm                                               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                                          fail    
 build-i386-rumprun                                           fail    
 test-amd64-amd64-xl                                          pass    
 test-armhf-armhf-xl                                          pass    
 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                                      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                               blocked 
 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-armhf-armhf-xl-arndale                                  pass    
 test-amd64-amd64-xl-credit2                                  pass    
 test-armhf-armhf-xl-credit2                                  pass    
 test-armhf-armhf-xl-cubietruck                               pass    
 test-amd64-i386-freebsd10-i386                               pass    
 test-amd64-i386-rumprun-i386                                 blocked 
 test-amd64-amd64-qemuu-nested-intel                          pass    
 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                                     fail    
 test-amd64-i386-libvirt                                      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-armhf-armhf-libvirt-qcow2                               fail    
 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-i386-xl-qemut-winxpsp3-vcpus1                     pass    
 test-amd64-i386-xl-qemuu-winxpsp3-vcpus1                     pass    
 test-amd64-amd64-libvirt-vhd                                 pass    
 test-armhf-armhf-xl-vhd                                      pass    
 test-amd64-amd64-xl-qemut-winxpsp3                           pass    
 test-amd64-i386-xl-qemut-winxpsp3                            pass    
 test-amd64-amd64-xl-qemuu-winxpsp3                           pass    
 test-amd64-i386-xl-qemuu-winxpsp3                            fail    

sg-report-flight on osstest.test-lab.xenproject.org
logs: /home/logs/logs
images: /home/logs/images

Logs, config files, etc. are available at

Explanation of these reports, and of osstest in general, is at

Test harness code can be found at

Not pushing.

commit 4627e5e5f10bf8cdebaf45b66a476c4adb104f6d
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Sep 6 11:52:22 2016 +0200

    memory: fix compat handling of XENMEM_access_op
    Within compat_memory_op() this needs to be placed in the first switch()
    statement, or it ends up being dead code (as that first switch() has a
    default case chaining to compat_arch_memory_op()).
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Tested-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: 8d6af808a7e9d9ae1d129e1e5a0def7f8b2333ee
    master date: 2016-09-02 14:19:51 +0200

commit 1663655cd05bc4db1344907b7404217453b79b66
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Sep 6 11:51:59 2016 +0200

    x86/PV: make PMU MSR handling consistent
    So far accesses to Intel MSRs on an AMD system fall through to the
    default case, while accesses to AMD MSRs on an Intel system bail (in
    the RDMSR case without updating EAX and EDX). Make the "AMD MSRs on
    Intel" case match the "Intel MSR on AMD" one.
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: bea64b3ed25864b90a41e1ca6eeb5a58895bb751
    master date: 2016-09-02 14:19:29 +0200

commit 5bb458bec9199785eda4f47cf98eb1fde7921515
Author: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
Date:   Tue Sep 6 11:51:34 2016 +0200

    credit1: fix a race when picking initial pCPU for a vCPU
    In the Credit1 hunk of 9f358ddd69463 ("xen: Have
    schedulers revise initial placement") csched_cpu_pick()
    is called without taking the runqueue lock of the
    (temporary) pCPU that the vCPU has been assigned to
    (e.g., in XEN_DOMCTL_max_vcpus).
    However, although 'hidden' in the IS_RUNQ_IDLE() macro,
    that function does access the runq (for doing load
    balancing calculations). Two scenarios are possible:
     1) we are on cpu X, and IS_RUNQ_IDLE() peeks at cpu's
        X own runq;
     2) we are on cpu X, but IS_RUNQ_IDLE() peeks at some
        other cpu's runq.
    Scenario 2) absolutely requies that the appropriate
    runq lock is taken. Scenario 1) works even without
    taking the cpu's own runq lock. That is actually what
    happens when when _csched_pick_cpu() is called from
    csched_vcpu_acct() (in turn, called by csched_tick()).
    Races have been observed and reported (by both XenServer
    own testing and OSSTest [1]), in the form of
    IS_RUNQ_IDLE() falling over LIST_POISON, because we're
    not currently holding the proper lock, in
    csched_vcpu_insert(), when scenario 1) occurs.
    However, for better robustness, from now on we always
    ask for the proper runq lock to be held when calling
    IS_RUNQ_IDLE() (which is also becoming a static inline
    function instead of macro).
    In order to comply with that, we take the lock around
    the call to _csched_cpu_pick() in csched_vcpu_acct().
    [1] https://lists.xen.org/archives/html/xen-devel/2016-08/msg02144.html
    Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
    Reviewed-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    master commit: 9109bf55084398c4547b8956906410c158eb9a17
    master date: 2016-09-02 14:17:55 +0200

commit 40592ed5717c772eb4e4757f4a8792fac6cfa361
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Tue Sep 6 11:51:05 2016 +0200

    x86/32on64: misc adjustments to call gate emulation
    - There's no 32-bit displacement in 16-bit addressing mode.
    - It is wrong to ASSERT() anything on parts of an instruction fetched
      from guest memory.
    - The two scaling bits of a SIB byte don't affect whether there is a
      scaled index register or not.
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: ee1cc4bfdca84d526805c4c72302c026f5e9cd94
    master date: 2016-09-01 15:23:46 +0200

commit 0d9c05d8146e4e72ed6029102c19eb68e829c4f0
Author: George Dunlap <george.dunlap@xxxxxxxxxx>
Date:   Tue Sep 6 11:49:37 2016 +0200

    xen: Remove buggy initial placement algorithm
    The initial placement algorithm sometimes picks cpus outside of the
    mask it's given, does a lot of unnecessary bitmasking, does its own
    separate load calculation, and completely ignores vcpu hard and soft
    affinities.  Just get rid of it and rely on the schedulers to do
    initial placement.
    Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    Reviewed-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: d5438accceecc8172db2d37d98b695eb8bc43afc
    master date: 2016-07-26 10:44:06 +0100

commit a149a6e7c45eaa368956ed3197761c25437e12cd
Author: George Dunlap <george.dunlap@xxxxxxxxxx>
Date:   Tue Sep 6 11:49:13 2016 +0200

    xen: Have schedulers revise initial placement
    The generic domain creation logic in
    xen/common/domctl.c:default_vcpu0_location() attempts to try to do
    initial placement load-balancing by placing vcpu 0 on the least-busy
    non-primary hyperthread available.  Unfortunately, the logic can end
    up picking a pcpu that's not in the online mask.  When this is passed
    to a scheduler such which assumes that the initial assignment is
    valid, it causes a null pointer dereference looking up the runqueue.
    Furthermore, this initial placement doesn't take into account hard or
    soft affinity, or any scheduler-specific knowledge (such as historic
    runqueue load, as in credit2).
    To solve this, when inserting a vcpu, always call the per-scheduler
    "pick" function to revise the initial placement.  This will
    automatically take all knowledge the scheduler has into account.
    csched2_cpu_pick ASSERTs that the vcpu's pcpu scheduler lock has been
    taken.  Grab and release the lock to minimize time spend with irqs
    Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    Reviewed-by: Meng Xu <mengxu@xxxxxxxxxxxxx>
    Reviwed-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
    master commit: 9f358ddd69463fa8fb65cf67beb5f6f0d3350e32
    master date: 2016-07-26 10:42:49 +0100

commit 4260eefcd882df503ead27781bb51433dfa4137b
Author: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
Date:   Tue Sep 6 11:48:07 2016 +0200

    sched: better handle (not) inserting idle vCPUs in runqueues
    Idle vCPUs are set to run immediately, as a part of their
    own initialization, so we shouldn't even try to put them
    in a runqueue. In fact, no scheduler does that, even when
    asked to (that is rather explicit in Credit2 and RTDS, a
    bit less evident in Credit1).
    Let's make things look as follows:
     - in generic code, explicitly avoid even trying to
       insert idle vCPUs in runqueues;
     - in specific schedulers' code, enforce that.
    Note that, as csched_vcpu_insert() is no longer being
    called, during boot (from sched_init_vcpu()) we can
    safely avoid saving the flags when taking the runqueue
    Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
    Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
    Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
    master commit: 6b53bb4ab3c9bd5eccde88a5175cf72589ba6d52
    master date: 2015-11-24 14:49:47 +0100
(qemu changes not included)

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