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
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https://bugs.launchpad.net/bugs/1805105
Title:
/proc/self/stack does not exist in kvm kernel, causing failures in
kernel security test
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