On Mon, 2023-08-07 at 23:00 +0100, Mark Brown wrote: > + if (flags & ~(SHADOW_STACK_SET_TOKEN | > SHADOW_STACK_SET_MARKER)) > + return -EINVAL; > + Thanks for adding SHADOW_STACK_SET_MARKER. I don't see where it is defined in these patches though. Might have been left out on accident?