Thanks for the update. It sounds like the bug is due to an Ubuntu SAUCE patch. Can you test the latest Xenial -proposed kernel?
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. If -proposed still has the bug, we can bisect between 4.4.0-21 and 4.4.0-34. ** Tags added: performing-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1612135 Title: CIFS client: access problems after updating to kernel 4.4.0-3*-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1612135/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs