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[Xen-devel] [xen-4.2-testing test] 24660: regressions - FAIL



flight 24660 xen-4.2-testing real [real]
http://www.chiark.greenend.org.uk/~xensrcts/logs/24660/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-amd64-amd64-xl-qemut-win7-amd64  7 windows-install   fail REGR. vs. 24571

Tests which are failing intermittently (not blocking):
 test-amd64-i386-xl-credit2   10 guest-saverestore           fail pass in 24629
 test-amd64-amd64-xl-qemuu-winxpsp3  4 xen-install           fail pass in 24629
 test-amd64-amd64-xl-qemut-winxpsp3 7 windows-install fail in 24629 pass in 
24660

Tests which did not succeed, but are not blocking:
 test-amd64-amd64-xl-pcipt-intel  9 guest-start                 fail never pass
 test-amd64-i386-xend-qemut-winxpsp3 16 leak-check/check        fail never pass
 test-amd64-i386-xl-qemuu-win7-amd64 13 guest-stop              fail never pass
 test-amd64-i386-xl-qemut-win7-amd64 13 guest-stop              fail never pass
 test-i386-i386-xl-qemut-winxpsp3 13 guest-stop                 fail never pass
 test-amd64-amd64-xl-winxpsp3 13 guest-stop                   fail   never pass
 test-amd64-i386-xl-qemut-winxpsp3-vcpus1 13 guest-stop         fail never pass
 test-amd64-amd64-xl-qemuu-win7-amd64 13 guest-stop             fail never pass
 test-amd64-i386-xl-winxpsp3-vcpus1 13 guest-stop               fail never pass
 test-amd64-i386-xl-win7-amd64 13 guest-stop                   fail  never pass
 test-amd64-amd64-xl-win7-amd64 13 guest-stop                   fail never pass
 test-amd64-i386-xl-qemuu-winxpsp3-vcpus1 13 guest-stop         fail never pass
 test-amd64-i386-xend-winxpsp3 16 leak-check/check             fail  never pass
 test-i386-i386-xl-qemuu-winxpsp3 13 guest-stop                 fail never pass
 test-i386-i386-xl-winxpsp3   13 guest-stop                   fail   never pass
 test-amd64-amd64-xl-qemut-winxpsp3 13 guest-stop               fail never pass
 test-amd64-amd64-xl-qemuu-winxpsp3 13 guest-stop      fail in 24629 never pass

version targeted for testing:
 xen                  0037ec360b8792f966acc154e06ac9f627b00f9f
baseline version:
 xen                  b06c0fd1e6be40843084442ebdb377b16f110602

------------------------------------------------------------
People who touched revisions under test:
  Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  Don Slutz <dslutz@xxxxxxxxxxx>
  Frediano Ziglio <frediano.ziglio@xxxxxxxxxx>
  Keir Fraser <keir@xxxxxxx>
  Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>
------------------------------------------------------------

jobs:
 build-amd64                                                  pass    
 build-i386                                                   pass    
 build-amd64-oldkern                                          pass    
 build-i386-oldkern                                           pass    
 build-amd64-pvops                                            pass    
 build-i386-pvops                                             pass    
 test-amd64-amd64-xl                                          pass    
 test-amd64-i386-xl                                           pass    
 test-i386-i386-xl                                            pass    
 test-amd64-i386-rhel6hvm-amd                                 pass    
 test-amd64-i386-qemut-rhel6hvm-amd                           pass    
 test-amd64-i386-qemuu-rhel6hvm-amd                           pass    
 test-amd64-i386-qemuu-freebsd10-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-win7-amd64                               fail    
 test-amd64-i386-xl-win7-amd64                                fail    
 test-amd64-i386-xl-credit2                                   fail    
 test-amd64-i386-qemuu-freebsd10-i386                         pass    
 test-amd64-amd64-xl-pcipt-intel                              fail    
 test-amd64-i386-rhel6hvm-intel                               pass    
 test-amd64-i386-qemut-rhel6hvm-intel                         pass    
 test-amd64-i386-qemuu-rhel6hvm-intel                         pass    
 test-amd64-i386-xl-multivcpu                                 pass    
 test-amd64-amd64-pair                                        pass    
 test-amd64-i386-pair                                         pass    
 test-i386-i386-pair                                          pass    
 test-amd64-amd64-xl-sedf-pin                                 pass    
 test-amd64-amd64-pv                                          pass    
 test-amd64-i386-pv                                           pass    
 test-i386-i386-pv                                            pass    
 test-amd64-amd64-xl-sedf                                     pass    
 test-amd64-i386-xl-qemut-winxpsp3-vcpus1                     fail    
 test-amd64-i386-xl-qemuu-winxpsp3-vcpus1                     fail    
 test-amd64-i386-xl-winxpsp3-vcpus1                           fail    
 test-amd64-i386-xend-qemut-winxpsp3                          fail    
 test-amd64-amd64-xl-qemut-winxpsp3                           fail    
 test-i386-i386-xl-qemut-winxpsp3                             fail    
 test-amd64-amd64-xl-qemuu-winxpsp3                           fail    
 test-i386-i386-xl-qemuu-winxpsp3                             fail    
 test-amd64-i386-xend-winxpsp3                                fail    
 test-amd64-amd64-xl-winxpsp3                                 fail    
 test-i386-i386-xl-winxpsp3                                   fail    


------------------------------------------------------------
sg-report-flight on woking.cam.xci-test.com
logs: /home/xc_osstest/logs
images: /home/xc_osstest/images

Logs, config files, etc. are available at
    http://www.chiark.greenend.org.uk/~xensrcts/logs

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


Not pushing.

------------------------------------------------------------
commit 0037ec360b8792f966acc154e06ac9f627b00f9f
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Thu Jan 30 09:01:28 2014 +0100

    common/sysctl: Don't leak status in SYSCTL_page_offline_op
    
    Also fix the indentation of the arguments to copy_to_guest() to help clarify
    that the 'ret = -EFAULT' is not part of the condition.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Keir Fraser <keir@xxxxxxx>
    master commit: efd8ff0a04740a698b2b8b2b9adccd639e0fa6c9
    master date: 2014-01-20 09:48:11 +0100

commit 142cf790dcecee00efa880ea6737916d0661ed8f
Author: Frediano Ziglio <frediano.ziglio@xxxxxxxxxx>
Date:   Thu Jan 30 09:01:01 2014 +0100

    mce: fix race condition in mctelem_xchg_head
    
    The function (mctelem_xchg_head()) used to exchange mce telemetry
    list heads is racy.  It may write to the head twice, with the second
    write linking to an element in the wrong state.
    
    If there are two threads, T1 inserting on committed list; and T2
    trying to consume it.
    
    1. T1 starts inserting an element (A), sets prev pointer (mcte_prev).
    2. T1 is interrupted after the cmpxchg succeeded.
    3. T2 gets the list and changes element A and updates the commit list
       head.
    4. T1 resumes, reads pointer to prev again and compare with result
       from the cmpxchg which succeeded but in the meantime prev changed
       in memory.
    5. T1 thinks the cmpxchg failed and goes around the loop again,
       linking head to A again.
    
    To solve the race use temporary variable for prev pointer.
    
    *linkp (which point to a field in the element) must be updated before
    the cmpxchg() as after a successful cmpxchg the element might be
    immediately removed and reinitialized.
    
    The wmb() prior to the cmpchgptr() call is not necessary since it is
    already a full memory barrier.  This wmb() is thus removed.
    
    Signed-off-by: Frediano Ziglio <frediano.ziglio@xxxxxxxxxx>
    Reviewed-by: Liu Jinsong <jinsong.liu@xxxxxxxxx>
    master commit: e9af61b969906976188609379183cb304935f448
    master date: 2014-01-17 15:58:27 +0100

commit ed234b1af2bc3edb05a7597b7b89c947a94f7c8b
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Date:   Thu Jan 30 09:00:09 2014 +0100

    dbg_rw_guest_mem: need to call put_gfn in error path
    
    Using a 1G hvm domU (in grub) and gdbsx:
    
    (gdb) set arch i8086
    warning: A handler for the OS ABI "GNU/Linux" is not built into this 
configuration
    of GDB.  Attempting to continue with the default i8086 settings.
    
    The target architecture is assumed to be i8086
    (gdb) target remote localhost:9999
    Remote debugging using localhost:9999
    Remote debugging from host 127.0.0.1
    0x0000d475 in ?? ()
    (gdb) x/1xh 0x6ae9168b
    
    Will reproduce this bug.
    
    With a debug=y build you will get:
    
    Assertion '!preempt_count()' failed at preempt.c:37
    
    For a debug=n build you will get a dom0 VCPU hung (at some point) in:
    
             [ffff82c4c0126eec] _write_lock+0x3c/0x50
              ffff82c4c01e43a0  __get_gfn_type_access+0x150/0x230
              ffff82c4c0158885  dbg_rw_mem+0x115/0x360
              ffff82c4c0158fc8  arch_do_domctl+0x4b8/0x22f0
              ffff82c4c01709ed  get_page+0x2d/0x100
              ffff82c4c01031aa  do_domctl+0x2ba/0x11e0
              ffff82c4c0179662  do_mmuext_op+0x8d2/0x1b20
              ffff82c4c0183598  __update_vcpu_system_time+0x288/0x340
              ffff82c4c015c719  continue_nonidle_domain+0x9/0x30
              ffff82c4c012938b  add_entry+0x4b/0xb0
              ffff82c4c02223f9  syscall_enter+0xa9/0xae
    
    And gdb output:
    
    (gdb) x/1xh 0x6ae9168b
    0x6ae9168b:     0x3024
    (gdb) x/1xh 0x6ae9168b
    0x6ae9168b:     Ignoring packet error, continuing...
    Reply contains invalid hex digit 116
    
    The 1st one worked because the p2m.lock is recursive and the PCPU
    had not yet changed.
    
    crash reports (for example):
    
    crash> mm_rwlock_t 0xffff83083f913010
    struct mm_rwlock_t {
      lock = {
        raw = {
          lock = 2147483647
        },
        debug = {<No data fields>}
      },
      unlock_level = 0,
      recurse_count = 1,
      locker = 1,
      locker_function = 0xffff82c4c022c640 <__func__.13514> 
"__get_gfn_type_access"
    }
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Don Slutz <dslutz@xxxxxxxxxxx>
    Acked-by: Mukesh Rathor <mukesh.rathor@xxxxxxxxxx>
    master commit: 3dbab7a8bf4bef1bb2967cb3a8c7ed2146482ab3
    master date: 2014-01-10 17:45:01 +0100
(qemu changes not included)

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