0004-kernel-module-Custom-module-blacklist.patch

From 2c48cf375d0ebc5008e13dee4a0a215b04bc7680 Mon Sep 17 00:00:00 2001
From: Pzqqt <821026875@qq.com>
Date: Thu, 28 Sep 2023 14:02:48 +0800
Subject: [PATCH 4/7] kernel: module: Custom module blacklist

- It does not affect behavior of the default module blacklist.

Signed-off-by: dodyirawan85 <dev.irawans@gmail.com>
---
 kernel/module.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/kernel/module.c b/kernel/module.c
index 5b77d9f2e..532719914 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3551,13 +3551,26 @@ int __weak module_frob_arch_sections(Elf_Ehdr *hdr,
 
 /* module_blacklist is a comma-separated list of module names */
 static char *module_blacklist;
+static char *custom_module_blacklist[] = {
+#if IS_BUILTIN(CONFIG_CRYPTO_LZO)
+    "lzo", "lzo_rle",
+#endif
+#if IS_BUILTIN(CONFIG_ZRAM)
+    "zram",
+#endif
+#if IS_BUILTIN(CONFIG_ZSMALLOC)
+    "zsmalloc",
+#endif
+};
+
 static bool blacklisted(const char *module_name)
 {
 	const char *p;
 	size_t len;
+	int i;
 
 	if (!module_blacklist)
-		return false;
+		goto custom_blacklist;
 
 	for (p = module_blacklist; *p; p += len) {
 		len = strcspn(p, ",");
@@ -3566,6 +3579,12 @@ static bool blacklisted(const char *module_name)
 		if (p[len] == ',')
 			len++;
 	}
+
+custom_blacklist:
+	for (i = 0; i < ARRAY_SIZE(custom_module_blacklist); i++)
+		if (!strcmp(module_name, custom_module_blacklist[i]))
+			return true;
+
 	return false;
 }
 core_param(module_blacklist, module_blacklist, charp, 0400);
-- 
2.34.1