Commit 6494a93d authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman Committed by Rusty Russell

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 <>
Cc: Linus Torvalds <>
Cc: Andrew Morton <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
Signed-off-by: default avatarRusty Russell <>
parent 0aa5bd52
......@@ -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);
err = -EINVAL;
goto out;
mod->mkobj.mod = mod;
memset(&mod->mkobj.kobj, 0, sizeof(mod->mkobj.kobj));
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