set_active_shstk
void set_active_shstk(struct task_struct *task, unsigned long shstk_addr);
set_active_shstk(current, 0);
set_active_shstk(p, ssp);
set_active_shstk(target, user_cfi.shstk_ptr);
set_active_shstk(tsk, token_loc);
set_active_shstk(tsk, token);
set_active_shstk(t, addr + size);