With the above patch applied, we can see the culprit directories:
$ sudo find /sys/firmware/efi/vars/ -type d | grep \! /sys/firmware/efi/vars/Pwr!Perf Profiles-7683c190-9523-4402-81ff-a11e93dc389c /sys/firmware/efi/vars/Intel(R) VT for Directed I!O (VT-d)-7683c190-9523-4402-81ff-a11e93dc389c
With the above patch applied, we can see the culprit directories:
$ sudo find /sys/firmware/ efi/vars/ -type d | grep \! efi/vars/ Pwr!Perf Profiles- 7683c190- 9523-4402- 81ff-a11e93dc38 9c efi/vars/ Intel(R) VT for Directed I!O (VT-d)- 7683c190- 9523-4402- 81ff-a11e93dc38 9c
/sys/firmware/
/sys/firmware/