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[Xen-devel] [xen-4.9-testing test] 132484: regressions - FAIL



flight 132484 xen-4.9-testing real [real]
http://logs.test-lab.xenproject.org/osstest/logs/132484/

Regressions :-(

Tests which did not succeed and are blocking,
including tests which could not be run:
 test-xtf-amd64-amd64-1       69 xtf/test-hvm64-xsa-278   fail REGR. vs. 130954
 test-amd64-i386-xl-qemut-win7-amd64 16 guest-localmigrate/x10 fail REGR. vs. 
130954
 build-armhf-libvirt           6 libvirt-build            fail REGR. vs. 130954

Tests which did not succeed, but are not blocking:
 test-armhf-armhf-libvirt-raw  1 build-check(1)               blocked  n/a
 test-armhf-armhf-libvirt      1 build-check(1)               blocked  n/a
 test-amd64-amd64-xl-qemuu-ws16-amd64 18 guest-start/win.repeat fail blocked in 
130954
 test-amd64-amd64-xl-qemut-ws16-amd64 14 guest-localmigrate    fail like 130851
 test-amd64-i386-xl-qemuu-ws16-amd64 17 guest-stop             fail like 130890
 test-amd64-amd64-xl-qemuu-win7-amd64 16 guest-localmigrate/x10 fail like 130954
 test-armhf-armhf-xl-rtds     16 guest-start/debian.repeat    fail  like 130954
 test-amd64-amd64-xl-qemut-win7-amd64 16 guest-localmigrate/x10 fail like 130954
 test-amd64-i386-xl-qemuu-win7-amd64 17 guest-stop             fail like 130954
 test-amd64-amd64-xl-rtds     10 debian-install               fail  like 130954
 test-amd64-i386-xl-qemut-ws16-amd64 17 guest-stop             fail like 130954
 test-amd64-amd64-libvirt     13 migrate-support-check        fail   never pass
 test-amd64-amd64-libvirt-xsm 13 migrate-support-check        fail   never pass
 test-amd64-i386-libvirt      13 migrate-support-check        fail   never pass
 test-amd64-i386-libvirt-xsm  13 migrate-support-check        fail   never pass
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check 
fail never pass
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm 11 migrate-support-check 
fail never pass
 test-armhf-armhf-xl-arndale  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-arndale  14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl          13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl          14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-credit2  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit2  14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-credit1  13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-credit1  14 saverestore-support-check    fail   never pass
 test-amd64-amd64-qemuu-nested-amd 17 debian-hvm-install/l1/l2  fail never pass
 test-amd64-amd64-libvirt-vhd 12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-rtds     13 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-rtds     14 saverestore-support-check    fail   never pass
 test-armhf-armhf-xl-multivcpu 13 migrate-support-check        fail  never pass
 test-armhf-armhf-xl-multivcpu 14 saverestore-support-check    fail  never pass
 test-armhf-armhf-xl-cubietruck 13 migrate-support-check        fail never pass
 test-armhf-armhf-xl-cubietruck 14 saverestore-support-check    fail never pass
 test-armhf-armhf-xl-vhd      12 migrate-support-check        fail   never pass
 test-armhf-armhf-xl-vhd      13 saverestore-support-check    fail   never pass
 test-amd64-amd64-xl-qemuu-win10-i386 10 windows-install        fail never pass
 test-amd64-amd64-xl-qemut-win10-i386 10 windows-install        fail never pass
 test-amd64-i386-xl-qemuu-win10-i386 10 windows-install         fail never pass
 test-amd64-i386-xl-qemut-win10-i386 10 windows-install         fail never pass

version targeted for testing:
 xen                  19fc44f4a180158f27788e60f6da78ea29f68a33
baseline version:
 xen                  7f01558d9b3fc4011741e9f469c96fd93dd8454e

Last test of basis   130954  2018-12-03 03:12:41 Z   57 days
Testing same since   132484  2019-01-26 01:36:39 Z    3 days    1 attempts

------------------------------------------------------------
People who touched revisions under test:
  Julien Grall <julien.grall@xxxxxxx>
  Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>
  Stefano Stabellini <sstabellini@xxxxxxxxxx>
  Stefano Stabellini <stefanos@xxxxxxxxxx>

jobs:
 build-amd64-xsm                                              pass    
 build-i386-xsm                                               pass    
 build-amd64-xtf                                              pass    
 build-amd64                                                  pass    
 build-armhf                                                  pass    
 build-i386                                                   pass    
 build-amd64-libvirt                                          pass    
 build-armhf-libvirt                                          fail    
 build-i386-libvirt                                           pass    
 build-amd64-prev                                             pass    
 build-i386-prev                                              pass    
 build-amd64-pvops                                            pass    
 build-armhf-pvops                                            pass    
 build-i386-pvops                                             pass    
 build-amd64-rumprun                                          pass    
 build-i386-rumprun                                           pass    
 test-xtf-amd64-amd64-1                                       pass    
 test-xtf-amd64-amd64-2                                       pass    
 test-xtf-amd64-amd64-3                                       pass    
 test-xtf-amd64-amd64-4                                       pass    
 test-xtf-amd64-amd64-5                                       pass    
 test-amd64-amd64-xl                                          pass    
 test-armhf-armhf-xl                                          pass    
 test-amd64-i386-xl                                           pass    
 test-amd64-amd64-xl-qemut-debianhvm-amd64-xsm                pass    
 test-amd64-i386-xl-qemut-debianhvm-amd64-xsm                 pass    
 test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm           pass    
 test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm            pass    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64-xsm                pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64-xsm                 pass    
 test-amd64-amd64-xl-qemut-stubdom-debianhvm-amd64-xsm        pass    
 test-amd64-i386-xl-qemut-stubdom-debianhvm-amd64-xsm         pass    
 test-amd64-amd64-libvirt-xsm                                 pass    
 test-amd64-i386-libvirt-xsm                                  pass    
 test-amd64-amd64-xl-xsm                                      pass    
 test-amd64-i386-xl-xsm                                       pass    
 test-amd64-amd64-qemuu-nested-amd                            fail    
 test-amd64-i386-qemut-rhel6hvm-amd                           pass    
 test-amd64-i386-qemuu-rhel6hvm-amd                           pass    
 test-amd64-amd64-xl-qemut-debianhvm-amd64                    pass    
 test-amd64-i386-xl-qemut-debianhvm-amd64                     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-rumprun-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-qemut-ws16-amd64                         fail    
 test-amd64-i386-xl-qemut-ws16-amd64                          fail    
 test-amd64-amd64-xl-qemuu-ws16-amd64                         fail    
 test-amd64-i386-xl-qemuu-ws16-amd64                          fail    
 test-armhf-armhf-xl-arndale                                  pass    
 test-amd64-amd64-xl-credit1                                  pass    
 test-armhf-armhf-xl-credit1                                  pass    
 test-amd64-amd64-xl-credit2                                  pass    
 test-armhf-armhf-xl-credit2                                  pass    
 test-armhf-armhf-xl-cubietruck                               pass    
 test-amd64-i386-freebsd10-i386                               pass    
 test-amd64-i386-rumprun-i386                                 pass    
 test-amd64-amd64-xl-qemut-win10-i386                         fail    
 test-amd64-i386-xl-qemut-win10-i386                          fail    
 test-amd64-amd64-xl-qemuu-win10-i386                         fail    
 test-amd64-i386-xl-qemuu-win10-i386                          fail    
 test-amd64-amd64-qemuu-nested-intel                          pass    
 test-amd64-i386-qemut-rhel6hvm-intel                         pass    
 test-amd64-i386-qemuu-rhel6hvm-intel                         pass    
 test-amd64-amd64-libvirt                                     pass    
 test-armhf-armhf-libvirt                                     blocked 
 test-amd64-i386-libvirt                                      pass    
 test-amd64-amd64-livepatch                                   pass    
 test-amd64-i386-livepatch                                    pass    
 test-amd64-amd64-migrupgrade                                 pass    
 test-amd64-i386-migrupgrade                                  pass    
 test-amd64-amd64-xl-multivcpu                                pass    
 test-armhf-armhf-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-amd64-pvgrub                                pass    
 test-amd64-amd64-i386-pvgrub                                 pass    
 test-amd64-amd64-pygrub                                      pass    
 test-amd64-amd64-xl-qcow2                                    pass    
 test-armhf-armhf-libvirt-raw                                 blocked 
 test-amd64-i386-xl-raw                                       pass    
 test-amd64-amd64-xl-rtds                                     fail    
 test-armhf-armhf-xl-rtds                                     fail    
 test-amd64-amd64-xl-qemuu-debianhvm-amd64-shadow             pass    
 test-amd64-i386-xl-qemuu-debianhvm-amd64-shadow              pass    
 test-amd64-amd64-xl-shadow                                   pass    
 test-amd64-i386-xl-shadow                                    pass    
 test-amd64-amd64-libvirt-vhd                                 pass    
 test-armhf-armhf-xl-vhd                                      pass    


------------------------------------------------------------
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 19fc44f4a180158f27788e60f6da78ea29f68a33
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Mon Oct 1 17:42:26 2018 +0100

    xen/arm: vgic-v3: Delay the initialization of the domain information
    
    A follow-up patch will require to know the number of vCPUs when
    initializating the vGICv3 domain structure. However this information is
    not available at domain creation. This is only known once
    XEN_DOMCTL_max_vpus is called for that domain.
    
    In order to get the max vCPUs around, delay the domain part of the vGIC
    v3 initialization until the first vCPU of the domain is initialized.
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>
    Acked-but-disliked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    (cherry picked from commit 703d9d5ec13a0f487e7415174ba54e0e3ca158db)

commit 97b37e342b0abe2c3d5c5ce8ffe884cb20c85be5
Author: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Date:   Tue Nov 13 08:45:49 2018 -0800

    xen/arm: check for multiboot nodes only under /chosen
    
    Make sure to only look for multiboot compatible nodes only under
    /chosen, not under any other paths (depth <= 3).
    
    Signed-off-by: Stefano Stabellini <stefanos@xxxxxxxxxx>
    [julien: Use sizeof(path) instead of len ]
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>
    (cherry picked from commit c32e3689c546305d4eae53e6ccf9c8b4e048c7df)

commit 2d57b55a0def0cc636302821fb6e1ce1aef7f947
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Tue Oct 23 19:17:07 2018 +0100

    xen/arm: gic: Ensure ordering between read of INTACK and shared data
    
    When an IPI is generated by a CPU, the pattern looks roughly like:
    
      <write shared data>
      dsb(sy);
      <write to GIC to signal SGI>
    
    On the receiving CPU we rely on the fact that, once we've taken the
    interrupt, then the freshly written shared data must be visible to us.
    Put another way, the CPU isn't going to speculate taking an interrupt.
    
    Unfortunately, this assumption turns out to be broken.
    
    Consider that CPUx wants to send an IPI to CPUy, which will cause CPUy
    to read some shared_data. Before CPUx has done anything, a random
    peripheral raises an IRQ to the GIC and the IRQ line on CPUy is raised.
    CPUy then takes the IRQ and starts executing the entry code, heading
    towards gic_handle_irq. Furthermore, let's assume that a bunch of the
    previous interrupts handled by CPUy were SGIs, so the branch predictor
    kicks in and speculates that irqnr will be <16 and we're likely to
    head into handle_IPI. The prefetcher then grabs a speculative copy of
    shared_data which contains a stale value.
    
    Meanwhile, CPUx gets round to updating shared_data and asking the GIC
    to send an SGI to CPUy. Internally, the GIC decides that the SGI is
    more important than the peripheral interrupt (which hasn't yet been
    ACKed) but doesn't need to do anything to CPUy, because the IRQ line
    is already raised.
    
    CPUy then reads the ACK register on the GIC, sees the SGI value which
    confirms the branch prediction and we end up with a stale shared_data
    value.
    
    This patch fixes the problem by adding an smp_rmb() to the IPI entry
    code in do_SGI.
    
    At the same time document the write barrier.
    
    Based on Linux commit f86c4fbd930ff6fecf3d8a1c313182bd0f49f496
    "irqchip/gic: Ensure ordering between read of INTACK and shared data".
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Andrii Anisov<andrii_anisov@xxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    (cherry picked from commit 555e5f1bd26c4c1995357e9671b3e42a68d5ce8f)

commit a3b22eb0c46052b3136352e81497e290e6d17556
Author: Julien Grall <julien.grall@xxxxxxx>
Date:   Tue Oct 23 19:17:06 2018 +0100

    xen/arm: gic: Ensure we have an ISB between ack and do_IRQ()
    
    Devices that expose their interrupt status registers via system
    registers (e.g. Statistical profiling, CPU PMU, DynamIQ PMU, arch timer,
    vgic (although unused by Linux), ...) rely on a context synchronising
    operation on the CPU to ensure that the updated status register is
    visible to the CPU when handling the interrupt. This usually happens as
    a result of taking the IRQ exception in the first place, but there are
    two race scenarios where this isn't the case.
    
    For example, let's say we have two peripherals (X and Y), where Y uses a
    system register for its interrupt status.
    
    Case 1:
    1. CPU takes an IRQ exception as a result of X raising an interrupt
    2. Y then raises its interrupt line, but the update to its system
       register is not yet visible to the CPU
    3. The GIC decides to expose Y's interrupt number first in the Ack
       register
    4. The CPU runs the IRQ handler for Y, but the status register is stale
    
    Case 2:
    1. CPU takes an IRQ exception as a result of X raising an interrupt
    2. CPU reads the interrupt number for X from the Ack register and runs
       its IRQ handler
    3. Y raises its interrupt line and the Ack register is updated, but
       again, the update to its system register is not yet visible to the
       CPU.
    4. Since the GIC drivers poll the Ack register, we read Y's interrupt
       number and run its handler without a context synchronisation
       operation, therefore seeing the stale register value.
    
    In either case, we run the risk of missing an IRQ. This patch solves the
    problem by ensuring that we execute an ISB in the GIC drivers prior
    to invoking the interrupt handler.
    
    Based on Linux commit 39a06b67c2c1256bcf2361a1f67d2529f70ab206
    "irqchip/gic: Ensure we have an ISB between ack and ->handle_irq".
    
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Andrii Anisov<andrii_anisov@xxxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    (cherry picked from commit 177afec4556c676e5a1a958d1626226fbca2a696)
(qemu changes not included)

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