ubuntu_ltp_kernel_misc / tpci causes test interruption, hang or machine crash

Found on:
 - 2021.11.08/impish/linux-oracle/5.13.0-1010.12 (instances: VM.DenseIO2.8, VM.Standard.E3.Flex-4c.8m, VM.Standard2.1)
 - 2021.11.08/impish/linux-aws/5.13.0-1007.8 (some instances, e.g. m5a.large, i3en.24xlarge; c3.xlarge shows few first tpci tests but then fails)
 - 2021.11.08/impish/linux-kvm/5.13.0-1006.6 on amd64

Same in previous cycle.

The ubuntu_ltp_kernel_misc test log is cut shortly after starting tpci:

02:24:05 INFO | START ubuntu_ltp_kernel_misc.tpci ubuntu_ltp_kernel_misc.tpci timestamp=1637115845 timeout=1200 localtime=Nov 17 02:24:05
02:24:05 DEBUG| Persistent state client._record_indent now set to 2
02:24:05 DEBUG| Persistent state client.unexpected_reboot now set to ('ubuntu_ltp_kernel_misc.tpci', 'ubuntu_ltp_kernel_misc.tpci')
02:24:05 DEBUG| Waiting for pid 52606 for 1200 seconds
02:24:05 WARNI| System python is too old, crash handling disabled
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R E S U L T S
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+ rsync -ar -e 'ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=quiet' ubuntu@3.135.201.81:kernel-test-results/ /home/aws/workspace/impish-linux-aws-aws-amd64-5.13.0-m5a.large-ubuntu_ltp_kernel_misc
rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
rsync error: unexplained error (code 255) at io.c(235) [Receiver=3.1.2]
++ python --version
Python 2.7.17
+ [[ '' = *3.5.* ]]
+ /var/lib/jenkins/autotest/client/tools/glue_testsuites '/home/aws/workspace/impish-linux-aws-aws-amd64-5.13.0-m5a.large-ubuntu_ltp_kernel_misc/*.xml'
  ** Warning: The requested file (/home/aws/workspace/impish-linux-aws-aws-amd64-5.13.0-m5a.large-ubuntu_ltp_kernel_misc/*.xml) does not exist.
Traceback (most recent call last):
  File "/var/lib/jenkins/autotest/client/tools/glue_testsuites", line 51, in
    main(sys.argv[1:])
  File "/var/lib/jenkins/autotest/client/tools/glue_testsuites", line 43, in main
    content = file_load(fname).split('\n')
AttributeError: 'NoneType' object has no attribute 'split'