Agesp: In response to your question about whether or not this impacts other software, I can tell you that it affects our Ruby on Rails app in production. I'm not sure what is triggering it -- it may be IRB, rails, or a gem that we have, but there is a constant stream of these messages on stderr when the rails console ('rails c') is loaded:
deploy@ip-10-0-0-41:/var/www/current$ rails c Loading production environment (Rails 4.1.10) 20150622025515(production) > df: `/sys/kernel/debug': Function not implemented df: `/sys/kernel/debug': Function not implemented df: `/sys/kernel/debug': Function not implemented df: `/sys/kernel/debug': Function not implemented ... I get a message every few seconds without any user interaction. Obviously there is a simple workaround here -- 'rails c 2>/dev/null`. But it would be nice to have stderr back at some point. :) Thanks, Andy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1465322 Title: regression: "df: `/sys/kernel/debug': Function not implemented" with 3.2.0-85.122 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1465322/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs