On Sat, Feb 12, 2022 at 05:53:47AM +0000, Aditya Garg wrote: > Feb 12 11:01:52 MacBook kernel: Reading EFI variable db-d719b2cb-3d3a-4596-a3bc-dad00e67656f Ok. With CONFIG_LOAD_UEFI_KEYS=n, can you run: cat /sys/firmware/efi/efivars/db-d719b2cb-3d3a-4596-a3bc-dad00e67656f and see whether it generates the same failure? If so then my (handwavy) guess is that something's going wrong with a firmware codepath for the d719b2cb-3d3a-4596-a3bc-dad00e67656f GUID. Someone could potentially then figure out whether the same happens under Windows, but the easiest thing is probably to just return a failure on Apple hardware when someone tries to access anything with that GUID.