diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/kobject.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/lib/kobject.c b/lib/kobject.c index a0b2dbfcfa23..ba1017cd67d1 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -94,10 +94,10 @@ static int create_dir(struct kobject *kobj) return 0; } -static int get_kobj_path_length(struct kobject *kobj) +static int get_kobj_path_length(const struct kobject *kobj) { int length = 1; - struct kobject *parent = kobj; + const struct kobject *parent = kobj; /* walk up the ancestors until we hit the one pointing to the * root. @@ -112,9 +112,9 @@ static int get_kobj_path_length(struct kobject *kobj) return length; } -static void fill_kobj_path(struct kobject *kobj, char *path, int length) +static void fill_kobj_path(const struct kobject *kobj, char *path, int length) { - struct kobject *parent; + const struct kobject *parent; --length; for (parent = kobj; parent; parent = parent->parent) { @@ -136,7 +136,7 @@ static void fill_kobj_path(struct kobject *kobj, char *path, int length) * * Return: The newly allocated memory, caller must free with kfree(). */ -char *kobject_get_path(struct kobject *kobj, gfp_t gfp_mask) +char *kobject_get_path(const struct kobject *kobj, gfp_t gfp_mask) { char *path; int len; @@ -834,6 +834,9 @@ EXPORT_SYMBOL_GPL(kobj_sysfs_ops); /** * kset_register() - Initialize and add a kset. * @k: kset. + * + * NOTE: On error, the kset.kobj.name allocated by() kobj_set_name() + * is freed, it can not be used any more. */ int kset_register(struct kset *k) { @@ -844,8 +847,12 @@ int kset_register(struct kset *k) kset_init(k); err = kobject_add_internal(&k->kobj); - if (err) + if (err) { + kfree_const(k->kobj.name); + /* Set it to NULL to avoid accessing bad pointer in callers. */ + k->kobj.name = NULL; return err; + } kobject_uevent(&k->kobj, KOBJ_ADD); return 0; } |