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Bug
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Resolution: Unresolved
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Undefined
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None
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False
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False
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None
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rhel-kernel-tracing-perf
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The TEST-20-Breakpoint-overflow-sampling test from the internal perf regression suite consistently fails in a KVM guest environment. The test crashes with a Trace/breakpoint trap (core dumped) error.
Beaker Job: https://beaker.engineering.redhat.com/recipes/19809703#task204241960
Version/Release Information:
- Distro: RHEL 8.2.0 BaseOS x86_64
- Kernel: 4.18.0-193.173.1.el8_2
- Test Suite: git://repo.usersys.redhat.com/perf?master#Regression/internal-testsuite
How to Reproduce:
- Deploy a system running RHEL 8.2 with the specified kernel.
- Create a KVM guest with 2 vCPUs.
- Run the internal perf regression test suite inside the guest.
Actual Results:
Test #20 (Breakpoint overflow sampling) fails. The test process crashes with the following error:
Trace/breakpoint trap (core dumped)
Relevant Log:
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: :: TEST #20 : Breakpoint overflow sampling ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::./runtest.sh: line 236: 31118 Trace/breakpoint trap (core dumped) perf test -F -vv $TEST_NUMBER &> $TEST_NUMBER.log 20: Breakpoint overflow sampling : --- start --- 20: Breakpoint overflow sampling -- :: [ 14:53:20 ] :: [ FAIL ] :: 20: Breakpoint overflow sampling :: [ 14:53:20 ] :: [ INFO ] :: Sending 20.log as TEST-20-Breakpoint-overflow-sampling.log Uploading TEST-20-Breakpoint-overflow-sampling.log .done kernel.perf_event_max_sample_rate = 100000 :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: :: Duration: 1s :: Assertions: 0 good, 1 bad :: RESULT: FAIL (TEST #20 : Breakpoint overflow sampling)** TEST-20-Breakpoint-overflow-sampling FAIL Score:1 Uploading resultoutputfile.log .done
Environment Details:
- Test Environment: KVM guest with 2 vCPUs
- Test System: dell-per6515-02.khw.eng.rdu2.dc.redhat.com
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