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[Ian Whitfield <2122461@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Not considered a regression because this behavior was present since the
beginning of TDX testing.

When testing ubuntu_kselftests_ftrace.ftrace:test.d--kprobe--multiple_kprobes.tc for noble:linux-gke on c3-standard-8.tdx, the test result output is like so:
13049  20:40:59 DEBUG| Running './ftracetest -v test.d/kprobe/multiple_kprobes.tc'
13050  20:40:59 DEBUG| [stdout] === Ftrace unit tests ===
13051  20:50:59 INFO | Timer expired (600 sec.), nuking pid 29273
13052  20:50:59 INFO | ERROR ubuntu_kselftests_ftrace.ftrace:test.d--kprobe--multiple_kprobes.tc ubuntu_kselftests_ftrace.ftrace:test.d--kprobe--multiple_kprobes.tc timestamp=1757451059 localtime=Sep 09 20:50:59 Test timeout expired, rc=15 

This error is consistent across at least one retry. I haven't seen this
error when testing noble:linux-gcp yet.

Passing runs of this test complete in 10 seconds even on the slowest
instances, the timeout is set for 600 seconds.

** Affects: ubuntu-kernel-tests
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2122461

Title:
  ubuntu_kselftests_ftrace.ftrace:test.d--kprobe--multiple_kprobes.tc
  consistently times out on Google TDX instances

Status in ubuntu-kernel-tests:
  New

Bug description:
  Not considered a regression because this behavior was present since
  the beginning of TDX testing.

  When testing ubuntu_kselftests_ftrace.ftrace:test.d--kprobe--multiple_kprobes.tc for noble:linux-gke on c3-standard-8.tdx, the test result output is like so:
  13049  20:40:59 DEBUG| Running './ftracetest -v test.d/kprobe/multiple_kprobes.tc'
  13050  20:40:59 DEBUG| [stdout] === Ftrace unit tests ===
  13051  20:50:59 INFO | Timer expired (600 sec.), nuking pid 29273
  13052  20:50:59 INFO | ERROR ubuntu_kselftests_ftrace.ftrace:test.d--kprobe--multiple_kprobes.tc ubuntu_kselftests_ftrace.ftrace:test.d--kprobe--multiple_kprobes.tc timestamp=1757451059 localtime=Sep 09 20:50:59 Test timeout expired, rc=15 

  This error is consistent across at least one retry. I haven't seen
  this error when testing noble:linux-gcp yet.

  Passing runs of this test complete in 10 seconds even on the slowest
  instances, the timeout is set for 600 seconds.

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