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[Po-Hsu Lin <2033694@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 2029917 ***
    https://bugs.launchpad.net/bugs/2029917

Hi Roxana, thanks for reporting this, it will be great to include at
least the kernel version. So people can look up in the history more
easily.

I believe this is for 5.4.0-1109-aws-fips

And I can see this from dmesg before it crashes:
[   73.980713] ------------[ cut here ]------------
[   73.980714] kernel BUG at arch/x86/xen/spinlock.c:62!
[   73.981783] invalid opcode: 0000 [#1] SMP PTI

So this is probably a duplicate with bug 2029917

The system will be rebooted after that. And experiment shows the fail
rate is 4 out of 5 attempts.

** This bug has been marked a duplicate of bug 2029917
   [Potential Regression] cpuset_hotplug in ubuntu_ltp_controllers triggers kernel bug (arch/x86/xen/spinlock.c:62) and kernel panic on AWS cloud c3.xlarge

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https://bugs.launchpad.net/bugs/2033694

Title:
  f:aws-fips times out on cpuset_hotplug test

Status in ubuntu-kernel-tests:
  New

Bug description:
  On f:aws-fips, the test cpuset_hotplug from ubuntu_ltp_controllers is
  timing out in the c3.xlarge instance as below:

  17:27:30 INFO | 	START	ubuntu_ltp_controllers.cpuset_hotplug	ubuntu_ltp_controllers.cpuset_hotplug	timestamp=1693502850	timeout=4500	localtime=Aug 31 17:27:30	
  17:27:30 DEBUG| Persistent state client._record_indent now set to 2
  17:27:30 DEBUG| Persistent state client.unexpected_reboot now set to ('ubuntu_ltp_controllers.cpuset_hotplug', 'ubuntu_ltp_controllers.cpuset_hotplug')
  17:27:30 DEBUG| Waiting for pid 930911 for 4500 seconds
  17:27:30 WARNI| System python is too old, crash handling disabled
  rsync: link_stat "/tmp/ubuntu_ltp_controllers.sentinel" failed: No such file or directory (2)
  rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1668) [Receiver=3.1.2]
  rsync: [Receiver] write error: Broken pipe (32)

  TEST SYSTEM FAILURE DETECTED
  A failure of the system under test has been detected.
  Please review log files for a potential panic, hang or unexpected reboot

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