[xen-unstable-smoke test] 100733: regressions - trouble: blocked/broken/pass

[osstest service owner <osstest-admin@xxxxxxxxxxxxxx>]

flight 100733 xen-unstable-smoke real [real]
http://logs.test-lab.xenproject.org/osstest/logs/100733/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 build-armhf                   4 host-build-prep          fail REGR. vs. 100732

Tests which did not succeed, but are not blocking:
 test-armhf-armhf-xl           1 build-check(1)               blocked  n/a
 test-amd64-amd64-libvirt     12 migrate-support-check        fail   never pass

version targeted for testing:
 xen                  158dd1bdca161a6456ee6be293969f87ecde3922
baseline version:
 xen                  f59174d7e5fb8bb530246003d373345b5b433ea0

Last test of basis   100732  2016-09-02 12:01:43 Z    0 days
Testing same since   100733  2016-09-02 14:01:51 Z    0 days    1 attempts

------------------------------------------------------------
People who touched revisions under test:
  Dario Faggioli <dario.faggioli@xxxxxxxxxx>
  George Dunlap <george.dunlap@xxxxxxxxxx>
  Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
  Jan Beulich <jbeulich@xxxxxxxx>
  Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
  Wei Liu <wei.liu2@xxxxxxxxxx>

jobs:
 build-amd64                                                  pass    
 build-armhf                                                  broken  
 build-amd64-libvirt                                          pass    
 test-armhf-armhf-xl                                          blocked 
 test-amd64-amd64-xl-qemuu-debianhvm-i386                     pass    
 test-amd64-amd64-libvirt                                     pass    


------------------------------------------------------------
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images: /home/logs/images

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    http://logs.test-lab.xenproject.org/osstest/logs

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    http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
    http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master

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


Not pushing.

------------------------------------------------------------
commit 158dd1bdca161a6456ee6be293969f87ecde3922
Author: Wei Liu <wei.liu2@xxxxxxxxxx>
Date:   Mon Aug 15 16:27:27 2016 +0100

    tools: delete gtraceview and gtracestat
    
    There has not been any substantial update to them since 2011. My quick
    check shows that they don't work.
    
    Just delete them. It would be easy to resurrect them from git log should
    people still need them.
    
    Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

commit 341e8c0b7a13fa5e23337e77b6df202c79e088da
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Fri Sep 2 14:22:28 2016 +0200

    x86/mm: drop pointless use of __FUNCTION__
    
    Non-debugging message text should be (and is here) distinguishable
    without also logging function names.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: George Dunlap <george.dunlap@xxxxxxxxxx>

commit 6dc9ac9f52b8651b5700e24567fadd5b2b61786d
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Fri Sep 2 14:20:23 2016 +0200

    x86emul: check alignment of SSE and AVX memory operands
    
    It only now occurred to me that there's no new hook needed to do so.
    Eliminate the two work item comments.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 8d6af808a7e9d9ae1d129e1e5a0def7f8b2333ee
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Fri Sep 2 14:19:51 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>

commit bea64b3ed25864b90a41e1ca6eeb5a58895bb751
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Fri Sep 2 14:19:29 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>

commit f8f185dc4359a1cd8e7896dfbcacb54b473436c8
Author: Jan Beulich <jbeulich@xxxxxxxx>
Date:   Fri Sep 2 14:18:52 2016 +0200

    x86: correct PT_NOTE file position
    
    Program and section headers disagreed about the file offset at which
    the build ID note lives.
    
    Reported-by: Sylvain Munaut <s.munaut@xxxxxxxxxxxxxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

commit 9109bf55084398c4547b8956906410c158eb9a17
Author: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
Date:   Fri Sep 2 14:17:55 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>
(qemu changes not included)

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