[qemu-upstream-4.2-testing test] 66927: regressions - FAIL

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

flight 66927 qemu-upstream-4.2-testing real [real]
http://logs.test-lab.xenproject.org/osstest/logs/66927/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 build-i386                    5 xen-build                 fail REGR. vs. 62044
 build-amd64                   5 xen-build                 fail REGR. vs. 62044

Tests which did not succeed, but are not blocking:
 test-i386-i386-xl-qemuu-winxpsp3  1 build-check(1)               blocked  n/a
 test-amd64-amd64-xl-qemuu-ovmf-amd64  1 build-check(1)             blocked n/a
 test-amd64-amd64-xl-qemuu-debianhvm-amd64  1 build-check(1)        blocked n/a
 test-amd64-amd64-xl-qemuu-win7-amd64  1 build-check(1)             blocked n/a
 test-amd64-amd64-xl-qemuu-winxpsp3  1 build-check(1)               blocked n/a
 test-amd64-i386-xl-qemuu-ovmf-amd64  1 build-check(1)              blocked n/a
 build-i386-libvirt            1 build-check(1)               blocked  n/a
 test-amd64-i386-qemuu-rhel6hvm-intel  1 build-check(1)             blocked n/a
 test-amd64-i386-qemuu-rhel6hvm-amd  1 build-check(1)               blocked n/a
 test-amd64-i386-xl-qemuu-winxpsp3-vcpus1  1 build-check(1)         blocked n/a
 test-amd64-i386-xl-qemuu-debianhvm-amd64  1 build-check(1)         blocked n/a
 test-amd64-i386-xend-qemuu-winxpsp3  1 build-check(1)              blocked n/a
 test-amd64-i386-xl-qemuu-win7-amd64  1 build-check(1)              blocked n/a
 build-amd64-libvirt           1 build-check(1)               blocked  n/a

version targeted for testing:
 qemuu                5081fc1c773d2a83ec7a867f030323b8b6956cd1
baseline version:
 qemuu                c17e602ae64fb24405ebd256679ba9a6f5819086

Last test of basis    62044  2015-09-15 15:06:42 Z   98 days
Testing same since    66542  2015-12-18 16:37:10 Z    4 days    5 attempts

------------------------------------------------------------
People who touched revisions under test:
  Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

jobs:
 build-amd64                                                  fail    
 build-i386                                                   fail    
 build-amd64-libvirt                                          blocked 
 build-i386-libvirt                                           blocked 
 build-amd64-pvops                                            pass    
 build-i386-pvops                                             pass    
 test-amd64-i386-qemuu-rhel6hvm-amd                           blocked 
 test-amd64-amd64-xl-qemuu-debianhvm-amd64                    blocked 
 test-amd64-i386-xl-qemuu-debianhvm-amd64                     blocked 
 test-amd64-amd64-xl-qemuu-ovmf-amd64                         blocked 
 test-amd64-i386-xl-qemuu-ovmf-amd64                          blocked 
 test-amd64-amd64-xl-qemuu-win7-amd64                         blocked 
 test-amd64-i386-xl-qemuu-win7-amd64                          blocked 
 test-amd64-i386-qemuu-rhel6hvm-intel                         blocked 
 test-amd64-i386-xl-qemuu-winxpsp3-vcpus1                     blocked 
 test-amd64-i386-xend-qemuu-winxpsp3                          blocked 
 test-amd64-amd64-xl-qemuu-winxpsp3                           blocked 
 test-i386-i386-xl-qemuu-winxpsp3                             blocked 


------------------------------------------------------------
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 5081fc1c773d2a83ec7a867f030323b8b6956cd1
Author: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date:   Fri Dec 18 15:45:14 2015 +0000

    xenfb: avoid reading twice the same fields from the shared page
    
    Reading twice the same field could give the guest an attack of
    opportunity. In the case of event->type, gcc could compile the switch
    statement into a jump table, effectively ending up reading the type
    field multiple times.
    
    This is part of XSA-155.
    
    Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

commit 74fab2ef4c0ba42af477e9e445c9883cc45cf9e6
Author: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date:   Fri Dec 18 15:44:58 2015 +0000

    xen/blkif: Avoid double access to src->nr_segments
    
    src is stored in shared memory and src->nr_segments is dereferenced
    twice at the end of the function.  If a compiler decides to compile this
    into two separate memory accesses then the size limitation could be
    bypassed.
    
    Fix it by removing the double access to src->nr_segments.
    
    This is part of XSA-155.
    
    Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

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