Red Hat Bugzilla – Bug 1010562
ACPI BIOS Warning (bug): Optional FADT field Pm2ControlBlock
Last modified: 2017-09-09 07:46:18 EDT
Created attachment 800927 [details]
[ 0.000000] ACPI BIOS Warning (bug): Optional FADT field Pm2ControlBlock has zero address or length: 0x0000000000000000/0x1 (20130517/tbfadt-603)
This is a bug in your BIOS. There's nothing wrong with the kernel here, it is just being informative.