Upon proof-reading, I realized I missed another reference: https://lore.kernel.org/linux-man/20210607221943.78414-1-dann.fraz...@canonical.com/T/#u
- Bug#989580: kernel_lockdown(7) describes removed SysRq for li... dann frazier
- Bug#989580: patch dann frazier
- Bug#989580: 2nd patch dann frazier
- Bug#989580: updated patch dann frazier
