test for function event triggers failed in ftrace from ubuntu_kernel_selftest on Eoan LPAR

Bug #1869189 reported by Po-Hsu Lin
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ubuntu-kernel-tests
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Bug Description

This issue was only spotted with Eoan (5.3.0-43.36) LPAR instances s2lp4

# [20] ftrace - test for function event triggers [FAIL]

Passed with s390x zVM and zKVM

However, it will pass if you run it directly:
$ sudo ./ftracetest test.d/ftrace/func_event_triggers.tc
=== Ftrace unit tests ===
[1] ftrace - test for function event triggers [PASS]
[2] (instance) ftrace - test for function event triggers [PASS]

# of passed: 2
# of failed: 0
# of unresolved: 0
# of untested: 0
# of unsupported: 0
# of xfailed: 0
# of undefined(test bug): 0

So it looks like a test case issue here.

Po-Hsu Lin (cypressyew)
tags: added: 5.3 eoan s390x sru-20200316 ubuntu-kernel-selftests
Revision history for this message
Stefan Bader (smb) wrote :

This seems to have re-occurred once more with s2lp3 bionic 4.15.0-154 for sru-20210719.

[stdout] [12] ftrace - test for function event triggers [FAIL]
[stdout] [45] (instance) ftrace - test for function event triggers [FAIL]

tags: added: 4.15 bionic sru-20210719
Revision history for this message
Krzysztof Kozlowski (krzk) wrote (last edit ):

Found on: 2021.09.27/bionic/linux-fips/4.15.0-1071.80:

[12] ftrace - test for function event triggers [FAIL]

tags: added: hinted sru-20210927
Revision history for this message
Luke Nowakowski-Krijger (lukenow) wrote :

Found on 2022.01.31/bionic/linux/4.15.0-169.177 on both s390x.zvm and s390x.lpar

tags: added: sru-20220131
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