Name: Figure Out Who Is Inserting Bogus Modules
Status: Booted on 2.6.9-rc3-mm3
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Version: -mm

Who is trying to insert a random file as a module?

Index: linux-2.6.10-bk14-Module/kernel/module.c
===================================================================
--- linux-2.6.10-bk14-Module.orig/kernel/module.c	2005-01-12 13:28:03.229303448 +1100
+++ linux-2.6.10-bk14-Module/kernel/module.c	2005-01-12 13:28:32.544846808 +1100
@@ -1398,6 +1398,22 @@
 }
 #endif /* CONFIG_KALLSYMS */
 
+static void who_is_doing_it(void)
+{
+	/* Print out all the args. */
+	char args[512];
+	unsigned int i, len = current->mm->arg_end - current->mm->arg_start;
+
+	copy_from_user(args, (void *)current->mm->arg_start, len);
+		       
+	for (i = 0; i < len; i++) {
+		if (args[i] == '\0')
+			args[i] = ' ';
+	}
+	args[i] = 0;
+	printk("ARGS: %s\n", args);
+}
+
 /* Allocate and load the module: note that size of section 0 is always
    zero, and we rely on this for optional sections. */
 static struct module *load_module(void __user *umod,
@@ -1474,6 +1490,7 @@
 			    ".gnu.linkonce.this_module");
 	if (!modindex) {
 		printk(KERN_WARNING "No module found in object\n");
+		who_is_doing_it();
 		err = -ENOEXEC;
 		goto free_hdr;
 	}