Public bug reported:

The ADT tests started failing with 4.11.0-11.16 on amd64, i386 and
ppc64el: all the arches we run using qemu over OpenStack. The virtual
machines hang completely.

The last lines in the log are:

12:11:18 DEBUG| [stdout] Test icebp [Ok]
12:11:18 DEBUG| [stdout] Test int 3 trap [Failed]
12:11:18 DEBUG| [stdout] selftests: breakpoint_test [PASS]
12:11:18 DEBUG| [stdout] 
/tmp/autopkgtest.zKFdZm/build.ham/linux-4.11.0/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/breakpoints

...

and on the console we see a lot of messages like:

** 35 printk messages dropped ** [ 3577.683828] ACPI Error: No installed 
handler for fixed event - SleepButton (3), disabling (20170119/evevent-286)
** 33 printk messages dropped ** [ 3577.686564] ACPI Error: Could not disable 
RealTimeClock events (20170119/evxfevnt-267)
** 25 printk messages dropped ** [ 3577.688566] ACPI Error: No installed 
handler for fixed event - SleepButton (3), disabling (20170119/evevent-286)
** 35 printk messages dropped ** [ 3577.692788] ACPI Error: No installed 
handler for fixed event - SleepButton (3), disabling (20170119/evevent-286)
** 29 printk messages dropped ** [ 3577.695184] ACPI Error: No installed 
handler for fixed event - SleepButton (3), disabling (20170119/evevent-286)
** 34 printk messages dropped ** [ 3577.697955] ACPI Error: No installed 
handler for fixed event - PM_Timer (0), disabling (20170119/evevent-286)


I've attached the full log. In the log file there is the invocation I used to 
generate the failing log. You should be able to try similar using either `qemu' 
locally. If that doesn't reproduce, try on Canonistack. If *that* doesn't 
reproduce, apw or I can run test builds for you if there's a PPA to test from.

This tickles an unfortunate behaviour in the way we run autopkgtest.
What happens is: the machine hangs, autopkgtest notices this has
happened, it tries to clean up the testbed and can't get into it because
it is hung. This is counted as a 'temporary failure', and so the job is
requeued forever. As a result, I've blacklisted linux from the workers.
Please reach out to us for manual runs, and then once it is confirmed to
not loop in this way we'll remove the blacklist.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: bot-stop-nagging

** Attachment added: "linux.tar.xz"
   
https://bugs.launchpad.net/bugs/1706283/+attachment/4920916/+files/linux.tar.xz

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https://bugs.launchpad.net/bugs/1706283

Title:
  ADT tests fail since 4.11.0-11.16

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  The ADT tests started failing with 4.11.0-11.16 on amd64, i386 and
  ppc64el: all the arches we run using qemu over OpenStack. The virtual
  machines hang completely.

  The last lines in the log are:

  12:11:18 DEBUG| [stdout] Test icebp [Ok]
  12:11:18 DEBUG| [stdout] Test int 3 trap [Failed]
  12:11:18 DEBUG| [stdout] selftests: breakpoint_test [PASS]
  12:11:18 DEBUG| [stdout] 
/tmp/autopkgtest.zKFdZm/build.ham/linux-4.11.0/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/breakpoints

  ...

  and on the console we see a lot of messages like:

  ** 35 printk messages dropped ** [ 3577.683828] ACPI Error: No installed 
handler for fixed event - SleepButton (3), disabling (20170119/evevent-286)
  ** 33 printk messages dropped ** [ 3577.686564] ACPI Error: Could not disable 
RealTimeClock events (20170119/evxfevnt-267)
  ** 25 printk messages dropped ** [ 3577.688566] ACPI Error: No installed 
handler for fixed event - SleepButton (3), disabling (20170119/evevent-286)
  ** 35 printk messages dropped ** [ 3577.692788] ACPI Error: No installed 
handler for fixed event - SleepButton (3), disabling (20170119/evevent-286)
  ** 29 printk messages dropped ** [ 3577.695184] ACPI Error: No installed 
handler for fixed event - SleepButton (3), disabling (20170119/evevent-286)
  ** 34 printk messages dropped ** [ 3577.697955] ACPI Error: No installed 
handler for fixed event - PM_Timer (0), disabling (20170119/evevent-286)

  
  I've attached the full log. In the log file there is the invocation I used to 
generate the failing log. You should be able to try similar using either `qemu' 
locally. If that doesn't reproduce, try on Canonistack. If *that* doesn't 
reproduce, apw or I can run test builds for you if there's a PPA to test from.

  This tickles an unfortunate behaviour in the way we run autopkgtest.
  What happens is: the machine hangs, autopkgtest notices this has
  happened, it tries to clean up the testbed and can't get into it
  because it is hung. This is counted as a 'temporary failure', and so
  the job is requeued forever. As a result, I've blacklisted linux from
  the workers. Please reach out to us for manual runs, and then once it
  is confirmed to not loop in this way we'll remove the blacklist.

To manage notifications about this bug go to:
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