diff -Naurp linux-2.6.15-rc5-vanilla/kernel/module.c linux-2.6.15-rc5-mod/kernel/module.c
--- linux-2.6.15-rc5-vanilla/kernel/module.c	2005-12-07 19:32:23.000000000 +0530
+++ linux-2.6.15-rc5-mod/kernel/module.c	2005-12-12 17:47:28.000000000 +0530
@@ -1204,6 +1204,63 @@ void *__symbol_get(const char *symbol)
 }
 EXPORT_SYMBOL_GPL(__symbol_get);
 
+/*
+ * Ensure that an exported symbol [global namespace] does not already exist
+ * in the Kernel or in some other modules exported symbol table.
+ */
+static int verify_export_symbols(Elf_Shdr *sechdrs,
+			    const char *strtab,
+			    struct module *mod)
+{
+	struct kernel_symbol *exportsym, *gplsym;
+	unsigned long i,ret=0,value=0;
+	struct module *owner;
+	const unsigned long *crc;
+	unsigned long index=0;
+        
+	spin_lock_irq(&modlist_lock);
+
+	exportsym = (struct kernel_symbol *)mod->syms;
+	gplsym = (struct kernel_symbol *)mod->gpl_syms;
+
+	if (exportsym)
+		for (i = 0; i < mod->num_syms; exportsym++,i++) {
+			index = (unsigned long)(exportsym->name);
+             		if (exportsym->name) {
+				value = __find_symbol(strtab + index, &owner, &crc,1);
+                
+				if (value != 0) 
+					goto duplicate_sym;
+        		}
+		}
+	
+	if (gplsym) 
+		for (i = 0; i < mod->num_gpl_syms; gplsym++,i++) {
+			index = (unsigned long)(gplsym->name);
+             		if (gplsym->name) {
+				value = __find_symbol(strtab + index, &owner, &crc,1);
+                
+				if (value != 0) 
+					goto duplicate_gpl_sym;
+        		}
+		}
+
+	spin_unlock_irq(&modlist_lock);
+	/*Done*/
+        return ret;
+
+duplicate_sym:
+	spin_unlock_irq(&modlist_lock);
+	printk("%s: Duplicate Exported Symbol found in %s\n", 
+			strtab + index, mod->name);
+	return -ENOEXEC;
+duplicate_gpl_sym:
+	spin_unlock_irq(&modlist_lock);
+	printk("%s: Duplicate Exported Symbol found in %s\n", 
+			strtab + index, mod->name);
+	return -ENOEXEC;
+}
+
 /* Change all symbols so that sh_value encodes the pointer directly. */
 static int simplify_symbols(Elf_Shdr *sechdrs,
 			    unsigned int symindex,
@@ -1502,10 +1559,10 @@ static struct module *load_module(void _
 {
 	Elf_Ehdr *hdr;
 	Elf_Shdr *sechdrs;
-	char *secstrings, *args, *modmagic, *strtab = NULL;
+	char *secstrings, *args, *modmagic, *strtab = NULL, *exportstrtab = NULL;
 	unsigned int i, symindex = 0, strindex = 0, setupindex, exindex,
-		exportindex, modindex, obsparmindex, infoindex, gplindex,
-		crcindex, gplcrcindex, versindex, pcpuindex;
+		exportindex, exportstringindex, modindex, obsparmindex, infoindex,
+		gplindex, crcindex, gplcrcindex, versindex, pcpuindex;
 	long arglen;
 	struct module *mod;
 	long err = 0;
@@ -1585,6 +1642,7 @@ static struct module *load_module(void _
 
 	/* Optional sections */
 	exportindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab");
+	exportstringindex = find_sec(hdr,sechdrs, secstrings, "__ksymtab_strings");
 	gplindex = find_sec(hdr, sechdrs, secstrings, "__ksymtab_gpl");
 	crcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab");
 	gplcrcindex = find_sec(hdr, sechdrs, secstrings, "__kcrctab_gpl");
@@ -1736,6 +1794,13 @@ static struct module *load_module(void _
 	if (gplcrcindex)
 		mod->gpl_crcs = (void *)sechdrs[gplcrcindex].sh_addr;
 
+        /* Find duplicate symbols */
+	exportstrtab = (void *)sechdrs[exportstringindex].sh_addr;
+	err = verify_export_symbols(sechdrs, exportstrtab, mod);
+
+	if (err < 0)
+		goto cleanup;
+
 #ifdef CONFIG_MODVERSIONS
 	if ((mod->num_syms && !crcindex) || 
 	    (mod->num_gpl_syms && !gplcrcindex)) {