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-rw-r--r--kernel/module.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/module.c b/kernel/module.c
index af3f81a9474..f6a4e721fd4 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -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));