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Bug #21204

open

`TestEtc#test_ractor_parallel` is still flaky result with ModGC/MMTk

Added by hsbt (Hiroshi SHIBATA) 3 days ago. Updated 3 days ago.


Description

https://github.com/ruby/ruby/actions/runs/14121185441/job/39561623937?pr=13004

    1) Failure:
  TestEtc#test_ractor_parallel [/home/runner/work/ruby/ruby/src/test/etc/test_etc.rb:178]:
  pid 150540 killed by SIGABRT (signal 6) (core dumped)
  | [BUG] pthread_mutex_lock: Owner died (EOWNERDEAD)
  | ruby 3.5.0dev (2025-03-28T03:13:46Z pull/13004/merge 4cfbc634ea) +PRISM +GC[mmtk] [x86_64-linux]
  | 
  | -- Control frame information -----------------------------------------------
  | 
  | malloc_consolidate(): unaligned fastbin chunk detected
  | 
  | -- Threading information ---------------------------------------------------
  | Total ractor count: 1

Updated by Eregon (Benoit Daloze) 3 days ago

  • Assignee set to eightbitraptor (Matt V-H)

This seems a ModGC bug as the failure seems to happen (from what I heard) only in the ModGC workflow, cc @eightbitraptor (Matt V-H) @peterzhu2118 (Peter Zhu)
The test has been omitted only for the ModGC workflow: https://github.com/ruby/etc/pull/55

Actions #2

Updated by Eregon (Benoit Daloze) 3 days ago

  • Subject changed from `TestEtc#test_ractor_parallel` is still flaky result to `TestEtc#test_ractor_parallel` is still flaky result with ModGC/MMTk
Actions #3

Updated by eightbitraptor (Matt V-H) 3 days ago

  • Status changed from Open to Assigned
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