Commit 6494a93d authored Jan 27, 2008 by Greg Kroah-Hartman Committed by Rusty Russell Jan 29, 2008

Module: check to see if we have a built in module with the same name

When trying to load a module with the same name as a built-in one, a
scary kobject backtrace comes up.  Prevent that from checking for this
condition and warning the user as to what exactly is going on.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

parent 0aa5bd52

kernel/module.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -1230,6 +1230,7 @@ void module_remove_modinfo_attrs(struct module *mod)
		int mod_sysfs_init(struct module *mod)
		{
		int err;
		struct kobject *kobj;

		if (!module_sysfs_initialized) {
		printk(KERN_ERR "%s: module sysfs not initialized\n",
		@@ -1237,6 +1238,15 @@ int mod_sysfs_init(struct module *mod)
		err = -EINVAL;
		goto out;
		}

		kobj = kset_find_obj(module_kset, mod->name);
		if (kobj) {
		printk(KERN_ERR "%s: module is already loaded\n", mod->name);
		kobject_put(kobj);
		err = -EINVAL;
		goto out;
		}

		mod->mkobj.mod = mod;

		memset(&mod->mkobj.kobj, 0, sizeof(mod->mkobj.kobj));