rc3 has been stress testing for 7h without error so I believe Mauricio Faria de Oliveira correctly identified the patch that corrects this issue.
ubuntu 18.04 (kernel 4.15.0) (mpt3sas driver 17.100.00.00) BUG ubuntu 18.04 hwe (kernel 5.0.0) (mpt3sas driver 27.101.00.00) BUG ubuntu 18.04 mainline (kernel 5.3.0-rc2) (mpt3sas driver 29.100.00.00) BUG ubuntu 18.04 mainline (kernel 5.3.0-rc3) (mpt3sas driver 29.100.00.00) working ubuntu 18.04 mainline (kernel 5.3.0-rc5) (mpt3sas driver 29.100.00.00) working rhel 8 (kernel 4.18.0) (mpt3sas driver 27.101.00.00) working -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1841132 Title: mpt3sas - storage controller resets under heavy disk io To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1841132/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs