Added some extra debug and some more sanity checking. Looks like on a single CPU the pthread reaping was not unlocking a mutex causing the issue.
Fixes committed: https://kernel.ubuntu.com/git/cking/stress-ng.git/commit/?id=e5ecba459754d4bdb3e858caaaf41a87e485c8ce "stress-pthread: make error messages a bit more informative" and https://kernel.ubuntu.com/git/cking/stress-ng.git/commit/?id=a50c7466634e194e3169bc63591a86342cb10c67 stress-pthread: add better error recovery and locking prevention checks ** Changed in: stress-ng Status: New => Fix Committed ** Changed in: stress-ng Assignee: (unassigned) => Colin Ian King (colin-king) ** Changed in: stress-ng Importance: Undecided => High -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-gcp in Ubuntu. https://bugs.launchpad.net/bugs/1813899 Title: pthread in stress-smoke test failed on GCP X-4.15 Status in Stress-ng: Fix Committed Status in ubuntu-kernel-tests: New Status in linux-gcp package in Ubuntu: New Bug description: 4.15.0-1027-gcp #28~16.04.1-Ubuntu Only spotted on node n1-standard-8 pthread FAILED stress-ng: debug: [19921] 1 processor online, 1 processor configured stress-ng: info: [19921] dispatching hogs: 4 pthread stress-ng: debug: [19921] cache allocate: default cache size: 56320K stress-ng: debug: [19921] starting stressors stress-ng: debug: [19921] 4 stressors spawned stress-ng: debug: [19925] stress-ng-pthread: started [19925] (instance 3) stress-ng: debug: [19924] stress-ng-pthread: started [19924] (instance 2) stress-ng: debug: [19923] stress-ng-pthread: started [19923] (instance 1) stress-ng: debug: [19922] stress-ng-pthread: started [19922] (instance 0) stress-ng: debug: [19923] stress-ng-pthread: exited [19923] (instance 1) stress-ng: debug: [19922] stress-ng-pthread: exited [19922] (instance 0) stress-ng: debug: [19921] process [19922] terminated stress-ng: debug: [19924] stress-ng-pthread: exited [19924] (instance 2) stress-ng: fail: [19924] stress-ng-pthread: mutex unlock failed, errno=22 (Invalid argument) stress-ng: debug: [19921] process [19923] (stress-ng-pthread) terminated on signal: 11 (Segmentation fault) stress-ng: debug: [19921] process [19923] terminated stress-ng: debug: [19921] process [19924] terminated stress-ng: debug: [19921] process [19925] (stress-ng-pthread) terminated on signal: 11 (Segmentation fault) stress-ng: debug: [19921] process [19925] terminated stress-ng: info: [19921] unsuccessful run completed in 5.05s To manage notifications about this bug go to: https://bugs.launchpad.net/stress-ng/+bug/1813899/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
