diff --git a/README.md b/README.md
index 76f26311..4ef67fcc 100644
--- a/README.md
+++ b/README.md
@@ -44,8 +44,7 @@ Linux 6.3+ (not yet adapted)
 
 - [vmlinux-to-elf](https://github.com/marin-m/vmlinux-to-elf): Some ideas for parsing kernel symbols.
 - [android-inline-hook](https://github.com/bytedance/android-inline-hook): Some code for fixing arm64 inline hook instructions.
-- [KernelSU](https://github.com/tiann/KernelSU): Some Android compat code.
-- [tlsf](https://github.com/mattconte/tlsf): Memory allocator used for KPM. (Need a better one to allocate ROX memory.)
+- [tlsf](https://github.com/mattconte/tlsf): Memory allocator used for KPM. (Need another to allocate ROX memory.)
 
 ## License
 
diff --git a/kernel/base/fphook.c b/kernel/base/fphook.c
index a657096a..1f3c48f9 100644
--- a/kernel/base/fphook.c
+++ b/kernel/base/fphook.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <hook.h>
 #include <symbol.h>
 #include <pgtable.h>
diff --git a/kernel/base/hmem.c b/kernel/base/hmem.c
index cfd13b4a..64ec4967 100644
--- a/kernel/base/hmem.c
+++ b/kernel/base/hmem.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "hook.h"
 
 #include <stdint.h>
diff --git a/kernel/base/hmem.h b/kernel/base/hmem.h
index c5679efb..0ffe4481 100644
--- a/kernel/base/hmem.h
+++ b/kernel/base/hmem.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_HMEM_H_
 #define _KP_HMEM_H_
 
diff --git a/kernel/base/hook.c b/kernel/base/hook.c
index 6ce17d3c..18e577cc 100644
--- a/kernel/base/hook.c
+++ b/kernel/base/hook.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <hook.h>
 #include <cache.h>
 #include <pgtable.h>
diff --git a/kernel/base/log.c b/kernel/base/log.c
index cfb603fa..83a0b040 100644
--- a/kernel/base/log.c
+++ b/kernel/base/log.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <stdint.h>
 
 #define BOOT_LOG_SIZE 1024
diff --git a/kernel/base/map.c b/kernel/base/map.c
index d1b78081..1ef05dfa 100644
--- a/kernel/base/map.c
+++ b/kernel/base/map.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "setup.h"
 
 typedef uint64_t phys_addr_t;
diff --git a/kernel/base/map1.S b/kernel/base/map1.S
index 780e3a8f..a7fd5c00 100644
--- a/kernel/base/map1.S
+++ b/kernel/base/map1.S
@@ -1,2 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
 
 // todo: 
\ No newline at end of file
diff --git a/kernel/base/predata.c b/kernel/base/predata.c
index 5745b04f..892f9a3e 100644
--- a/kernel/base/predata.c
+++ b/kernel/base/predata.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <predata.h>
 #include <common.h>
 #include <log.h>
diff --git a/kernel/base/setup.c b/kernel/base/setup.c
index 82ba1bb2..2203a91e 100644
--- a/kernel/base/setup.c
+++ b/kernel/base/setup.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "setup.h"
 #include "../version"
 
diff --git a/kernel/base/setup.h b/kernel/base/setup.h
index 49c8693c..6ee58eea 100644
--- a/kernel/base/setup.h
+++ b/kernel/base/setup.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_SETUP_H_
 #define _KP_SETUP_H_
 
diff --git a/kernel/base/setup1.S b/kernel/base/setup1.S
index 069f754e..626a4974 100644
--- a/kernel/base/setup1.S
+++ b/kernel/base/setup1.S
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
 
 #define __ASSEMBLY__
 #include "./setup.h"
diff --git a/kernel/base/start.c b/kernel/base/start.c
index d757bc63..8f88b2f9 100644
--- a/kernel/base/start.c
+++ b/kernel/base/start.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <common.h>
 #include <pgtable.h>
 #include <ktypes.h>
diff --git a/kernel/base/start.h b/kernel/base/start.h
index 06c0259b..5443f574 100644
--- a/kernel/base/start.h
+++ b/kernel/base/start.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_START_H_
 #define _KP_START_H_
 
diff --git a/kernel/base/symbol.c b/kernel/base/symbol.c
index f71dcfc5..0f2c9ca5 100644
--- a/kernel/base/symbol.c
+++ b/kernel/base/symbol.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <symbol.h>
 #include <log.h>
 #include <stdint.h>
diff --git a/kernel/include/common.h b/kernel/include/common.h
index 08dd2fc7..774fc4da 100644
--- a/kernel/include/common.h
+++ b/kernel/include/common.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_COMMON_H_
 #define _KP_COMMON_H_
 
diff --git a/kernel/include/ctype.h b/kernel/include/ctype.h
index bbfebe75..e1850bc5 100644
--- a/kernel/include/ctype.h
+++ b/kernel/include/ctype.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_CTYPE_H_
 #define _KP_CTYPE_H_
 
diff --git a/kernel/include/hook.h b/kernel/include/hook.h
index b4ee3b8f..454fadc0 100644
--- a/kernel/include/hook.h
+++ b/kernel/include/hook.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_HOOK_H_
 #define _KP_HOOK_H_
 
diff --git a/kernel/include/inlinestring.h b/kernel/include/inlinestring.h
index 9d9d7705..2645015a 100644
--- a/kernel/include/inlinestring.h
+++ b/kernel/include/inlinestring.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_INLINESTRING_H_
 #define _KP_INLINESTRING_H_
 
diff --git a/kernel/include/kpmodule.h b/kernel/include/kpmodule.h
index f0b13b95..0609c5f2 100644
--- a/kernel/include/kpmodule.h
+++ b/kernel/include/kpmodule.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_KPMODULE_H_
 #define _KP_KPMODULE_H_
 
diff --git a/kernel/include/log.h b/kernel/include/log.h
index afb17920..b015fbe3 100644
--- a/kernel/include/log.h
+++ b/kernel/include/log.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_LOG_H_
 #define _KP_LOG_H_
 
diff --git a/kernel/include/pgtable.h b/kernel/include/pgtable.h
index e9a4a014..ba311ff1 100644
--- a/kernel/include/pgtable.h
+++ b/kernel/include/pgtable.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_PGTABLE_H_
 #define _KP_PGTABLE_H_
 
diff --git a/kernel/include/predata.h b/kernel/include/predata.h
index eb558240..f87fc4ba 100644
--- a/kernel/include/predata.h
+++ b/kernel/include/predata.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_PREDATA_H_
 #define _KP_PREDATA_H_
 
diff --git a/kernel/include/preset.h b/kernel/include/preset.h
index 8a7cf9c9..537ea1b8 100644
--- a/kernel/include/preset.h
+++ b/kernel/include/preset.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_PRESET_H_
 #define _KP_PRESET_H_
 
diff --git a/kernel/include/symbol.h b/kernel/include/symbol.h
index 3c51a2dc..14a487ff 100644
--- a/kernel/include/symbol.h
+++ b/kernel/include/symbol.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_SYMBOL_H_
 #define _KP_SYMBOL_H_
 
diff --git a/kernel/patch/android/kpuserd.c b/kernel/patch/android/kpuserd.c
index 6d2836a7..aba30991 100644
--- a/kernel/patch/android/kpuserd.c
+++ b/kernel/patch/android/kpuserd.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <ktypes.h>
 #include <hook.h>
 #include <linux/fs.h>
@@ -26,11 +31,6 @@
 #include <linux/umh.h>
 #include <uapi/scdefs.h>
 
-/*
-Modified from KernelSU, GPLv2
-https://github.com/tiann/KernelSU
-*/
-
 const char origin_rc_file[] = "/system/etc/init/atrace.rc";
 const char replace_rc_file[] = "/dev/.atrace.rc";
 
diff --git a/kernel/patch/android/sucompat.c b/kernel/patch/android/sucompat.c
index afc9536e..b5616e56 100644
--- a/kernel/patch/android/sucompat.c
+++ b/kernel/patch/android/sucompat.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <linux/list.h>
 #include <ktypes.h>
 #include <stdbool.h>
@@ -29,11 +34,6 @@
 #include <uapi/scdefs.h>
 #include <predata.h>
 
-/*
-Modified from KernelSU, GPLv2
-https://github.com/tiann/KernelSU
-*/
-
 static const char sh_path[] = ANDROID_SH_PATH;
 static const char default_su_path[] = ANDROID_SU_PATH;
 static const char *current_su_path = 0;
diff --git a/kernel/patch/android/supercall.c b/kernel/patch/android/supercall.c
index 42833929..8bc95f42 100644
--- a/kernel/patch/android/supercall.c
+++ b/kernel/patch/android/supercall.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <ktypes.h>
 #include <uapi/scdefs.h>
 #include <hook.h>
diff --git a/kernel/patch/common/accctl.c b/kernel/patch/common/accctl.c
index 72f936b5..2a27d57d 100644
--- a/kernel/patch/common/accctl.c
+++ b/kernel/patch/common/accctl.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "accctl.h"
 
 #include <pgtable.h>
diff --git a/kernel/patch/common/hotpatch.c b/kernel/patch/common/hotpatch.c
index 26a3d88f..05853324 100644
--- a/kernel/patch/common/hotpatch.c
+++ b/kernel/patch/common/hotpatch.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <hotpatch.h>
 
 #include <linux/stop_machine.h>
diff --git a/kernel/patch/common/secpass.c b/kernel/patch/common/secpass.c
index 94a3dc0d..d1d4a394 100644
--- a/kernel/patch/common/secpass.c
+++ b/kernel/patch/common/secpass.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
 
 #include <ktypes.h>
 #include <hook.h>
diff --git a/kernel/patch/common/selinuxhook.c b/kernel/patch/common/selinuxhook.c
index d584e0f0..2a0ca50e 100644
--- a/kernel/patch/common/selinuxhook.c
+++ b/kernel/patch/common/selinuxhook.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "accctl.h"
 
 #include <hook.h>
diff --git a/kernel/patch/common/supercall.c b/kernel/patch/common/supercall.c
index bcb3e611..def83e2d 100644
--- a/kernel/patch/common/supercall.c
+++ b/kernel/patch/common/supercall.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <ktypes.h>
 #include <uapi/scdefs.h>
 #include <hook.h>
diff --git a/kernel/patch/common/syscall.c b/kernel/patch/common/syscall.c
index fb04b119..294a3f9c 100644
--- a/kernel/patch/common/syscall.c
+++ b/kernel/patch/common/syscall.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "syscall.h"
 
 #include <cache.h>
diff --git a/kernel/patch/common/taskob.c b/kernel/patch/common/taskob.c
index 23ed2293..2de90a95 100644
--- a/kernel/patch/common/taskob.c
+++ b/kernel/patch/common/taskob.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <taskob.h>
 #include <taskext.h>
 #include <kallsyms.h>
diff --git a/kernel/patch/common/utils.c b/kernel/patch/common/utils.c
index b2aaad59..5618c11e 100644
--- a/kernel/patch/common/utils.c
+++ b/kernel/patch/common/utils.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <kputils.h>
 #include <linux/seq_buf.h>
 #include <linux/trace_seq.h>
diff --git a/kernel/patch/include/accctl.h b/kernel/patch/include/accctl.h
index e73c5015..8e6960a9 100644
--- a/kernel/patch/include/accctl.h
+++ b/kernel/patch/include/accctl.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_ACCCTL_H_
 #define _KP_ACCCTL_H_
 
diff --git a/kernel/patch/include/hotpatch.h b/kernel/patch/include/hotpatch.h
index 59503a2c..983d72d0 100644
--- a/kernel/patch/include/hotpatch.h
+++ b/kernel/patch/include/hotpatch.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_HOTPATCH_H_
 #define _KP_HOTPATCH_H_
 
diff --git a/kernel/patch/include/kconfig.h b/kernel/patch/include/kconfig.h
index 8dc9aced..929fbdd8 100644
--- a/kernel/patch/include/kconfig.h
+++ b/kernel/patch/include/kconfig.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_KCONFIG_H_
 #define _KP_KCONFIG_H_
 
diff --git a/kernel/patch/include/kputils.h b/kernel/patch/include/kputils.h
index bc08c389..2ce0d5bb 100644
--- a/kernel/patch/include/kputils.h
+++ b/kernel/patch/include/kputils.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_UTILS_H_
 #define _KP_UTILS_H_
 
diff --git a/kernel/patch/include/ksyms.h b/kernel/patch/include/ksyms.h
index 7eb31083..dcbab95d 100644
--- a/kernel/patch/include/ksyms.h
+++ b/kernel/patch/include/ksyms.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_KSYMS_H
 #define _KP_KSYMS_H
 
diff --git a/kernel/patch/include/module.h b/kernel/patch/include/module.h
index e2b70ad2..bd4ac852 100644
--- a/kernel/patch/include/module.h
+++ b/kernel/patch/include/module.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_MODULE_H_
 #define _KP_MODULE_H_
 
diff --git a/kernel/patch/include/syscall.h b/kernel/patch/include/syscall.h
index a414921c..5b89cc79 100644
--- a/kernel/patch/include/syscall.h
+++ b/kernel/patch/include/syscall.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_SYSCALL_H_
 #define _KP_SYSCALL_H_
 
diff --git a/kernel/patch/include/taskext.h b/kernel/patch/include/taskext.h
index a82cff8e..901a0e09 100644
--- a/kernel/patch/include/taskext.h
+++ b/kernel/patch/include/taskext.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_TASKEXT_H_
 #define _KP_TASKEXT_H_
 
diff --git a/kernel/patch/include/taskob.h b/kernel/patch/include/taskob.h
index fa74b976..113eacb8 100644
--- a/kernel/patch/include/taskob.h
+++ b/kernel/patch/include/taskob.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_TASKOB_H_
 #define _KP_TASKOB_H_
 
diff --git a/kernel/patch/include/uapi/scdefs.h b/kernel/patch/include/uapi/scdefs.h
index 568cedde..9bc27883 100644
--- a/kernel/patch/include/uapi/scdefs.h
+++ b/kernel/patch/include/uapi/scdefs.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_UAPI_SCDEF_H_
 #define _KP_UAPI_SCDEF_H_
 
diff --git a/kernel/patch/ksyms/libs.c b/kernel/patch/ksyms/libs.c
index 1000431c..fbdbe5c7 100644
--- a/kernel/patch/ksyms/libs.c
+++ b/kernel/patch/ksyms/libs.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <ksyms.h>
 #include <ktypes.h>
 #include <symbol.h>
diff --git a/kernel/patch/ksyms/misc.c b/kernel/patch/ksyms/misc.c
index fba4020c..d79bbba8 100644
--- a/kernel/patch/ksyms/misc.c
+++ b/kernel/patch/ksyms/misc.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <ksyms.h>
 #include <ktypes.h>
 #include <symbol.h>
diff --git a/kernel/patch/ksyms/misc_len.c b/kernel/patch/ksyms/misc_len.c
index 1d622b96..e671e516 100644
--- a/kernel/patch/ksyms/misc_len.c
+++ b/kernel/patch/ksyms/misc_len.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KP_MISC_LEN_H_
 #define _KP_MISC_LEN_H_
 
diff --git a/kernel/patch/ksyms/task_cred.c b/kernel/patch/ksyms/task_cred.c
index f1832f1c..5e1ff3e5 100644
--- a/kernel/patch/ksyms/task_cred.c
+++ b/kernel/patch/ksyms/task_cred.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <log.h>
 #include <stdbool.h>
 #include <linux/cred.h>
diff --git a/kernel/patch/module/module.c b/kernel/patch/module/module.c
index 856f5b0d..90018564 100644
--- a/kernel/patch/module/module.c
+++ b/kernel/patch/module/module.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <uapi/asm-generic/errno.h>
 #include <pgtable.h>
 #include <kpmalloc.h>
diff --git a/tools/image.c b/tools/image.c
index dc5f5ffa..15307cc6 100644
--- a/tools/image.c
+++ b/tools/image.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "image.h"
 
 #include <inttypes.h>
diff --git a/tools/image.h b/tools/image.h
index e861f205..1106d610 100644
--- a/tools/image.h
+++ b/tools/image.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _IMAGE_H_
 #define _IMAGE_H_
 
diff --git a/tools/kallsym.c b/tools/kallsym.c
index d58989fd..818c1c13 100644
--- a/tools/kallsym.c
+++ b/tools/kallsym.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "kallsym.h"
 
 #define _GNU_SOURCE
diff --git a/tools/kallsym.h b/tools/kallsym.h
index 35597a9c..e6c24717 100644
--- a/tools/kallsym.h
+++ b/tools/kallsym.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KALLSYM_H_
 #define _KALLSYM_H_
 
diff --git a/tools/kptools.c b/tools/kptools.c
index f0fa706c..42c66e92 100644
--- a/tools/kptools.c
+++ b/tools/kptools.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <fcntl.h>
 #include <getopt.h>
 #include <stdint.h>
diff --git a/tools/order.c b/tools/order.c
index 855662e4..3f0a57db 100644
--- a/tools/order.c
+++ b/tools/order.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "order.h"
 
 inline uint16_t u16swp(uint16_t val)
diff --git a/tools/order.h b/tools/order.h
index 75f5158d..6cbdc677 100644
--- a/tools/order.h
+++ b/tools/order.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _ORDER_H_
 #define _ORDER_H_
 
diff --git a/user/android/android_user.c b/user/android/android_user.c
index d554327c..922a66d7 100644
--- a/user/android/android_user.c
+++ b/user/android/android_user.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <fcntl.h>
 #include <sys/wait.h>
 #include <dirent.h>
diff --git a/user/android/android_user.h b/user/android/android_user.h
index e66ab105..9a730fd5 100644
--- a/user/android/android_user.h
+++ b/user/android/android_user.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KPU_ANDROID_USER_H_
 #define _KPU_ANDROID_USER_H_
 
diff --git a/user/android/apjni.cpp b/user/android/apjni.cpp
index bc69449e..b6ca1e5f 100644
--- a/user/android/apjni.cpp
+++ b/user/android/apjni.cpp
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <jni.h>
 #include <android/log.h>
 #include <cstring>
diff --git a/user/android/sumgr.c b/user/android/sumgr.c
index 92f56b51..dc31070c 100644
--- a/user/android/sumgr.c
+++ b/user/android/sumgr.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "sumgr.h"
 #include <unistd.h>
 #include <stdlib.h>
diff --git a/user/android/sumgr.h b/user/android/sumgr.h
index 3ee71774..dde6c2a7 100644
--- a/user/android/sumgr.h
+++ b/user/android/sumgr.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KPU_ANDROID_SUMGR_H_
 #define _KPU_ANDROID_SUMGR_H_
 
diff --git a/user/kpatch.c b/user/kpatch.c
index 30dfcdf5..23cf157a 100644
--- a/user/kpatch.c
+++ b/user/kpatch.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "kpatch.h"
 
 #include <getopt.h>
diff --git a/user/kpatch.h b/user/kpatch.h
index 76f6f73a..e1214558 100644
--- a/user/kpatch.h
+++ b/user/kpatch.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KPU_KPATCH_H_
 #define _KPU_KPATCH_H_
 
diff --git a/user/kpm.c b/user/kpm.c
index 15db711d..d5da1d6b 100644
--- a/user/kpm.c
+++ b/user/kpm.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include "kpm.h"
 #include <errno.h>
 #include <unistd.h>
diff --git a/user/kpm.h b/user/kpm.h
index 86134543..8e476ea8 100644
--- a/user/kpm.h
+++ b/user/kpm.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KPU_ANDROID_KPM_H_
 #define _KPU_ANDROID_KPM_H_
 
diff --git a/user/main.c b/user/main.c
index 9578edc2..3cdbf111 100644
--- a/user/main.c
+++ b/user/main.c
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #include <getopt.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/user/su.c b/user/su.c
index 30faf1d0..c790d441 100644
--- a/user/su.c
+++ b/user/su.c
@@ -1,3 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
 
 #include "su.h"
 
diff --git a/user/su.h b/user/su.h
index ebd71b51..9369a4be 100644
--- a/user/su.h
+++ b/user/su.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KPU_SU_H_
 #define _KPU_SU_H_
 
diff --git a/user/supercall.h b/user/supercall.h
index 77846224..a7045ef5 100644
--- a/user/supercall.h
+++ b/user/supercall.h
@@ -1,3 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* 
+ * Copyright (C) 2023 bmax121. All Rights Reserved.
+ */
+
 #ifndef _KPU_SUPERCALL_H_
 #define _KPU_SUPERCALL_H_