By the way, on 4.19, this is now only readable by root. So, now returns EACCESS when user tries to read it.
$ cat /proc/self/stack cat: /proc/self/stack: Permission denied f8a00cef17206ecd1b30d3d9f99e10d9fa707aa7 proc: restrict kernel stack dumps to root ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Disco) Importance: Undecided Status: New ** Also affects: linux-kvm (Ubuntu Disco) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: linux-kvm (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Also affects: linux-kvm (Ubuntu Xenial) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Cosmic) Importance: Undecided Status: New ** Also affects: linux-kvm (Ubuntu Cosmic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xenial) Status: New => Invalid ** Changed in: linux (Ubuntu Bionic) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1805105 Title: /proc/self/stack does not exist in kvm kernel, causing failures in kernel security test To manage notifications about this bug go to: https://bugs.launchpad.net/qa-regression-testing/+bug/1805105/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs