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[Xen-devel] [xen-4.2-testing test] 16232: regressions - trouble: broken/fail/pass



flight 16232 xen-4.2-testing real [real]
http://www.chiark.greenend.org.uk/~xensrcts/logs/16232/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-i386-i386-xl             5 xen-boot                  fail REGR. vs. 16228
 test-i386-i386-xl-qemuu-winxpsp3  5 xen-boot              fail REGR. vs. 16228
 test-amd64-i386-xl-win7-amd64 12 guest-localmigrate/x10   fail REGR. vs. 16228
 test-i386-i386-win            5 xen-boot                  fail REGR. vs. 16228
 test-i386-i386-xl-winxpsp3    5 xen-boot                  fail REGR. vs. 16228
 test-i386-i386-xl-qemut-win   3 host-install(3)         broken REGR. vs. 16228

Tests which did not succeed, but are not blocking:
 build-armhf                   4 xen-build                    fail   never pass
 test-amd64-amd64-xl-pcipt-intel  9 guest-start                 fail never pass
 test-amd64-i386-xl-winxpsp3-vcpus1 13 guest-stop               fail never pass
 test-amd64-amd64-xl-win      13 guest-stop                   fail   never pass
 test-amd64-amd64-xl-qemut-win7-amd64 13 guest-stop             fail never pass
 test-amd64-i386-xl-qemut-win7-amd64 13 guest-stop              fail never pass
 test-amd64-i386-win-vcpus1   16 leak-check/check             fail   never pass
 test-amd64-amd64-xl-win7-amd64 13 guest-stop                   fail never pass
 test-amd64-amd64-xl-qemuu-win7-amd64  9 guest-localmigrate     fail never pass
 test-amd64-amd64-xl-qemut-win 13 guest-stop                   fail  never pass
 test-amd64-amd64-qemut-win   16 leak-check/check             fail   never pass
 test-amd64-i386-xend-winxpsp3 16 leak-check/check             fail  never pass
 test-amd64-i386-xl-qemut-winxpsp3-vcpus1 13 guest-stop         fail never pass
 test-amd64-i386-xl-win-vcpus1 13 guest-stop                   fail  never pass
 test-amd64-i386-xl-qemut-win-vcpus1 13 guest-stop              fail never pass
 test-amd64-i386-qemut-win-vcpus1 16 leak-check/check           fail never pass
 test-amd64-amd64-xl-qemuu-winxpsp3  9 guest-localmigrate       fail never pass
 test-amd64-i386-win          16 leak-check/check             fail   never pass
 test-amd64-amd64-xl-winxpsp3 13 guest-stop                   fail   never pass
 test-amd64-i386-qemut-win    16 leak-check/check             fail   never pass
 test-i386-i386-xl-qemut-winxpsp3 13 guest-stop                 fail never pass
 test-i386-i386-qemut-win     16 leak-check/check             fail   never pass
 test-amd64-i386-xend-qemut-winxpsp3 16 leak-check/check        fail never pass
 test-i386-i386-xl-win        13 guest-stop                   fail   never pass
 test-amd64-amd64-xl-qemut-winxpsp3 13 guest-stop               fail never pass
 test-amd64-amd64-win         16 leak-check/check             fail   never pass

version targeted for testing:
 xen                  6f0f339dd4378d062a211969f45cd23af12bf386
baseline version:
 xen                  61401264eb00fae4ee4efc8e9a5067449283207b

------------------------------------------------------------
People who touched revisions under test:
  Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
  Jim Fehlig <jfehlig@xxxxxxxx>
------------------------------------------------------------

jobs:
 build-amd64                                                  pass    
 build-armhf                                                  fail    
 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                                            fail    
 test-amd64-i386-rhel6hvm-amd                                 pass    
 test-amd64-i386-qemut-rhel6hvm-amd                           pass    
 test-amd64-i386-qemuu-rhel6hvm-amd                           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-amd64-xl-win7-amd64                               fail    
 test-amd64-i386-xl-win7-amd64                                fail    
 test-amd64-i386-xl-credit2                                   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-win-vcpus1                                   fail    
 test-amd64-i386-qemut-win-vcpus1                             fail    
 test-amd64-i386-xl-qemut-win-vcpus1                          fail    
 test-amd64-i386-xl-win-vcpus1                                fail    
 test-amd64-i386-xl-qemut-winxpsp3-vcpus1                     fail    
 test-amd64-i386-xl-winxpsp3-vcpus1                           fail    
 test-amd64-amd64-win                                         fail    
 test-amd64-i386-win                                          fail    
 test-i386-i386-win                                           fail    
 test-amd64-amd64-qemut-win                                   fail    
 test-amd64-i386-qemut-win                                    fail    
 test-i386-i386-qemut-win                                     fail    
 test-amd64-amd64-xl-qemut-win                                fail    
 test-i386-i386-xl-qemut-win                                  broken  
 test-amd64-amd64-xl-win                                      fail    
 test-i386-i386-xl-win                                        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 6f0f339dd4378d062a211969f45cd23af12bf386
Author: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Date:   Wed Jan 23 16:53:11 2013 +0000

    libxl: fix stale timeout event callback race
    
    Because there is not necessarily any lock held at the point the
    application (eg, libvirt) calls libxl_osevent_occurred_timeout, in a
    multithreaded program those calls may be arbitrarily delayed in
    relation to other activities within the program.
    
    Specifically this means when ->timeout_deregister returns, libxl does
    not know whether it can safely dispose of the for_libxl value or
    whether it needs to retain it in case of an in-progress call to
    _occurred_timeout.
    
    The interface could be fixed by requiring the application to make a
    new call into libxl to say that the deregistration was complete.
    
    However that new call would have to be threaded through the
    application's event loop; this is complicated and some application
    authors are likely not to implement it properly.  Furthermore the
    easiest way to implement this facility in most event loops is to queue
    up a time event for "now".
    
    Shortcut all of this by having libxl always call timeout_modify
    setting abs={0,0} (ie, ASAP) instead of timeout_deregister.  This will
    cause the application to call _occurred_timeout.  When processing this
    calldown we see that we were no longer actually interested and simply
    throw it away.
    
    Additionally, there is a race between _occurred_timeout and
    ->timeout_modify.  If libxl ever adjusts the deadline for a timeout
    the application may already be in the process of calling _occurred, in
    which case the situation with for_app's lifetime becomes very
    complicated.  Therefore abolish libxl__ev_time_modify_{abs,rel} (which
    have no callers) and promise to the application only ever to call
    ->timeout_modify with abs=={0,0}.  The application still needs to cope
    with ->timeout_modify racing with its internal function which calls
    _occurred_timeout.  Document this.
    
    This is a forwards-compatible change for applications using the libxl
    API, and will hopefully eliminate these races in callback-supplying
    applications (such as libvirt) without the need for corresponding
    changes to the application.  (It is possible that this might expose
    bugs in applications, though, as previously libxl would never call
    libxl_osevent_hooks->timeout_modify and now it never calls
    ->timeout_deregister).
    
    For clarity, fold the body of time_register_finite into its one
    remaining call site.  This makes the semantics of ev->infinite
    slightly clearer.
    
    Cc: Bamvor Jian Zhang <bjzhang@xxxxxxxx>
    Cc: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
    Tested-by: Jim Fehlig <jfehlig@xxxxxxxx>
    Acked-by: Jim Fehlig <jfehlig@xxxxxxxx>
    Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
(qemu changes not included)

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