On Sat, Dec 09, 2023 at 01:59:16PM +1300, Robert O'Callahan wrote:

overriding clone_args::shadow_stack_size to zero in the call to
clone3(), instead having the replay task call map_shadow_stack() to
put the the shadow stack in the right place, and then setting its SSP
via ptrace. Will that work?

That should work with the interface in the current series, yes.