diff --color -ruN origin/include/linux/bpf.h aliyunctf/include/linux/bpf.h
--- origin/include/linux/bpf.h	2025-01-23 10:21:19.000000000 -0600
+++ aliyunctf/include/linux/bpf.h	2025-01-24 03:44:01.494468038 -0600
@@ -3058,6 +3058,7 @@
 extern const struct bpf_func_proto bpf_user_ringbuf_drain_proto;
 extern const struct bpf_func_proto bpf_cgrp_storage_get_proto;
 extern const struct bpf_func_proto bpf_cgrp_storage_delete_proto;
+extern const struct bpf_func_proto bpf_aliyunctf_xor_proto;
 
 const struct bpf_func_proto *tracing_prog_func_proto(
   enum bpf_func_id func_id, const struct bpf_prog *prog);
diff --color -ruN origin/include/uapi/linux/bpf.h aliyunctf/include/uapi/linux/bpf.h
--- origin/include/uapi/linux/bpf.h	2025-01-23 10:21:19.000000000 -0600
+++ aliyunctf/include/uapi/linux/bpf.h	2025-01-24 03:44:11.814636836 -0600
@@ -5881,6 +5881,7 @@
 	FN(user_ringbuf_drain, 209, ##ctx)		\
 	FN(cgrp_storage_get, 210, ##ctx)		\
 	FN(cgrp_storage_delete, 211, ##ctx)		\
+	FN(aliyunctf_xor, 212, ##ctx)		\
 	/* */
 
 /* backwards-compatibility macros for users of __BPF_FUNC_MAPPER that don't
diff --color -ruN origin/kernel/bpf/helpers.c aliyunctf/kernel/bpf/helpers.c
--- origin/kernel/bpf/helpers.c	2025-01-23 10:21:19.000000000 -0600
+++ aliyunctf/kernel/bpf/helpers.c	2025-01-24 03:44:06.683490095 -0600
@@ -1745,6 +1745,28 @@
 	.arg3_type	= ARG_CONST_ALLOC_SIZE_OR_ZERO,
 };
 
+BPF_CALL_3(bpf_aliyunctf_xor, const char *, buf, size_t, buf_len, s64 *, res) {
+	s64 _res = 2025;
+
+	if (buf_len != sizeof(s64))
+		return -EINVAL;
+
+	_res ^= *(s64 *)buf;
+	*res = _res;
+
+	return 0;
+}
+
+const struct bpf_func_proto bpf_aliyunctf_xor_proto = {
+	.func		= bpf_aliyunctf_xor,
+	.gpl_only	= false,
+	.ret_type	= RET_INTEGER,
+	.arg1_type	= ARG_PTR_TO_MEM | MEM_RDONLY,
+	.arg2_type	= ARG_CONST_SIZE,
+	.arg3_type	= ARG_PTR_TO_FIXED_SIZE_MEM | MEM_UNINIT | MEM_ALIGNED | MEM_RDONLY,
+	.arg3_size	= sizeof(s64),
+};
+
 const struct bpf_func_proto bpf_get_current_task_proto __weak;
 const struct bpf_func_proto bpf_get_current_task_btf_proto __weak;
 const struct bpf_func_proto bpf_probe_read_user_proto __weak;
@@ -1801,6 +1823,8 @@
 		return &bpf_strtol_proto;
 	case BPF_FUNC_strtoul:
 		return &bpf_strtoul_proto;
+	case BPF_FUNC_aliyunctf_xor:
+		return &bpf_aliyunctf_xor_proto;
 	default:
 		break;
 	}