--- zzzz-none-000/linux-4.4.271/arch/arm/kernel/module.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/arch/arm/kernel/module.c	2023-04-19 10:22:27.000000000 +0000
@@ -12,10 +12,12 @@
  */
 #include <linux/module.h>
 #include <linux/moduleloader.h>
+#include <linux/kasan.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/elf.h>
 #include <linux/vmalloc.h>
+#include <linux/slab.h>
 #include <linux/fs.h>
 #include <linux/string.h>
 #include <linux/gfp.h>
@@ -40,11 +42,23 @@
 #ifdef CONFIG_MMU
 void *module_alloc(unsigned long size)
 {
-	void *p = __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
-				GFP_KERNEL, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
+	unsigned long gfp_flags = GFP_KERNEL;
+	void *p;
+
+	if (IS_ENABLED(CONFIG_ARM_MODULE_PLTS))
+		gfp_flags = gfp_flags | __GFP_NOWARN;
+
+	p = __vmalloc_node_range(size, MODULE_ALIGN, MODULES_VADDR, MODULES_END,
+				gfp_flags, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
 				__builtin_return_address(0));
+	if (p && (kasan_module_alloc(p, size) < 0)) {
+		vfree(p);
+		return NULL;
+	}
+
 	if (!IS_ENABLED(CONFIG_ARM_MODULE_PLTS) || p)
 		return p;
+
 	return __vmalloc_node_range(size, 1,  VMALLOC_START, VMALLOC_END,
 				GFP_KERNEL, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
 				__builtin_return_address(0));
@@ -88,6 +102,10 @@
 			return -ENOEXEC;
 		}
 
+		if ((IS_ERR_VALUE(sym->st_value) || !sym->st_value) &&
+		    ELF_ST_BIND(sym->st_info) == STB_WEAK)
+			continue;
+
 		loc = dstsec->sh_addr + rel->r_offset;
 
 		switch (ELF32_R_TYPE(rel->r_info)) {