rr-debugger / rr-debugger/rr

Ryzen 3900X test failures

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Description

Testing rr on Ryzen 3900X (after running the ryzen workaround) and I get the following failures:

The following tests FAILED:
	565 - setuid-no-syscallbuf (Failed)
	1102 - checksum_sanity_noclone (Failed)

The following tests FAILED:
	1153 - record_replay-no-syscallbuf (Failed)
	2394 - record_replay-32 (Failed)

I can reproduce setuid-no-syscallbuf with ctest -R sometimes, I cannot reproduce the other failures.

I'm not sure if 3900X should be added to the list of supported Ryzen CPUs, are these known bits of flakiness?

cc @glandium

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Research direction

Start by reproducing setuid-no-syscallbuf with ctest -R on a Ryzen 3900X after applying the Ryzen workaround, then compare it with checksum_sanity_noclone, record_replay-no-syscallbuf, and record_replay-32. Review the supported Ryzen CPU handling and test results; done means determining whether these failures are expected, flaky, or require a tracked fix.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, linux
Domain
operating-systems, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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