It sounds like this is not a regression and you tested the mainline kernel. Version 4.12 final is now available. For completeness, can you give that one a test:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12 ** Changed in: linux-lts-xenial (Ubuntu) Importance: Undecided => High ** Tags added: kernel-da-key ** Tags removed: kernel-da-key ** Tags added: kernel-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1701542 Title: xfs_trans_cancel on mkdir() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-xenial/+bug/1701542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
