printk(KERN_WARNING "KGTP: $kret cannot use with while-stepping or watch.\n");

[teawater]

    if ((tpe->flags & GTP_ENTRY_FLAGS_IS_KRETPROBE)
        && (tpe->step || tpe->type != gtp_entry_kprobe

ifdef CONFIG_X86

        || gtp_have_step)) {

else

        )) {

endif

        printk(KERN_WARNING "KGTP: $kret cannot use with while-stepping or watch.\n");
        gtp_gdbrsp_qtstop();
        return -EINVAL;
    }

watch not check.