[qemu-upstream-4.4-testing test] 106824: regressions - FAIL

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

flight 106824 qemu-upstream-4.4-testing real [real]
http://logs.test-lab.xenproject.org/osstest/logs/106824/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-amd64-amd64-xl-qemuu-winxpsp3 15 guest-localmigrate/x10 fail REGR. vs. 
102531

Tests which did not succeed, but are not blocking:
 test-amd64-amd64-libvirt     12 migrate-support-check        fail   never pass
 test-amd64-i386-libvirt      12 migrate-support-check        fail   never pass
 test-amd64-amd64-qemuu-nested-intel 16 debian-hvm-install/l1/l2 fail never pass
 test-amd64-amd64-qemuu-nested-amd 16 debian-hvm-install/l1/l2  fail never pass
 test-amd64-amd64-libvirt-vhd 11 migrate-support-check        fail   never pass

version targeted for testing:
 qemuu                784c43b613bc1b73d67c0d133f63bbbbb3197681
baseline version:
 qemuu                5fadf00bf21ad3706f69b12877cd76aab4e17ecd

Last test of basis   102531  2016-11-22 20:04:12 Z  120 days
Testing same since   106824  2017-03-21 19:13:50 Z    1 days    1 attempts

------------------------------------------------------------
People who touched revisions under test:
  Gerd Hoffmann <kraxel@xxxxxxxxxx>
  Stefano Stabellini <sstabellini@xxxxxxxxxx>

jobs:
 build-amd64-xend                                             pass    
 build-i386-xend                                              pass    
 build-amd64                                                  pass    
 build-i386                                                   pass    
 build-amd64-libvirt                                          pass    
 build-i386-libvirt                                           pass    
 build-amd64-pvops                                            pass    
 build-i386-pvops                                             pass    
 test-amd64-amd64-xl                                          pass    
 test-amd64-i386-xl                                           pass    
 test-amd64-amd64-qemuu-nested-amd                            fail    
 test-amd64-i386-qemuu-rhel6hvm-amd                           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-xl-qemuu-win7-amd64                         pass    
 test-amd64-i386-xl-qemuu-win7-amd64                          pass    
 test-amd64-amd64-xl-credit2                                  pass    
 test-amd64-i386-freebsd10-i386                               pass    
 test-amd64-amd64-qemuu-nested-intel                          fail    
 test-amd64-i386-qemuu-rhel6hvm-intel                         pass    
 test-amd64-amd64-libvirt                                     pass    
 test-amd64-i386-libvirt                                      pass    
 test-amd64-amd64-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-pv                                          pass    
 test-amd64-i386-pv                                           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-amd64-i386-xl-raw                                       pass    
 test-amd64-i386-xl-qemuu-winxpsp3-vcpus1                     pass    
 test-amd64-amd64-libvirt-vhd                                 pass    
 test-amd64-amd64-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
    http://logs.test-lab.xenproject.org/osstest/logs

Explanation of these reports, and of osstest in general, is at
    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 784c43b613bc1b73d67c0d133f63bbbbb3197681
Author: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Date:   Tue Feb 14 19:09:59 2017 +0100

    cirrus/vnc: zap bitblit support from console code.
    
    There is a special code path (dpy_gfx_copy) to allow graphic emulation
    notify user interface code about bitblit operations carryed out by
    guests.  It is supported by cirrus and vnc server.  The intended purpose
    is to optimize display scrolls and just send over the scroll op instead
    of a full display update.
    
    This is rarely used these days though because modern guests simply don't
    use the cirrus blitter any more.  Any linux guest using the cirrus drm
    driver doesn't.  Any windows guest newer than winxp doesn't ship with a
    cirrus driver any more and thus uses the cirrus as simple framebuffer.
    
    So this code tends to bitrot and bugs can go unnoticed for a long time.
    See for example commit "3e10c3e vnc: fix qemu crash because of SIGSEGV"
    which fixes a bug lingering in the code for almost a year, added by
    commit "c7628bf vnc: only alloc server surface with clients connected".
    
    Also the vnc server will throttle the frame rate in case it figures the
    network can't keep up (send buffers are full).  This doesn't work with
    dpy_gfx_copy, for any copy operation sent to the vnc client we have to
    send all outstanding updates beforehand, otherwise the vnc client might
    run the client side blit on outdated data and thereby corrupt the
    display.  So this dpy_gfx_copy "optimization" might even make things
    worse on slow network links.
    
    Lets kill it once for all.
    
    This is XSA-211.
    
    Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
    Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>

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