f:aws-fips times out on cpuset_hotplug test

[Magali Lemes do Sacramento]

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

[Po-Hsu Lin (cypressyew)]

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.