This reverts commit
4ef12f7198023c09ad6d25b652bd8748c965c7fa.
Guenter reports:
All my arm64be (arm64 big endian) boot tests crash with this
patch applied. Reverting it fixes the problem. Crash log and
bisect results (from pending-fixes branch) below.
And also:
arm64 images don't crash but report lots of "poison overwritten"
backtraces like the one below. On arm, I see "refcount_t:
underflow", also attached. I didn't bisect those, but given the
context I would suspect the same culprit.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200513151840.36400-1-heikki.krogerus@linux.intel.com
Cc: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: kernel test robot <rong.a.chen@intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
}
EXPORT_SYMBOL_GPL(kobject_move);
}
EXPORT_SYMBOL_GPL(kobject_move);
-static void __kobject_del(struct kobject *kobj)
+/**
+ * kobject_del() - Unlink kobject from hierarchy.
+ * @kobj: object.
+ *
+ * This is the function that should be called to delete an object
+ * successfully added via kobject_add().
+ */
+void kobject_del(struct kobject *kobj)
{
struct kernfs_node *sd;
const struct kobj_type *ktype;
{
struct kernfs_node *sd;
const struct kobj_type *ktype;
kobj->state_in_sysfs = 0;
kobj_kset_leave(kobj);
kobj->state_in_sysfs = 0;
kobj_kset_leave(kobj);
+ kobject_put(kobj->parent);
-
-/**
- * kobject_del() - Unlink kobject from hierarchy.
- * @kobj: object.
- *
- * This is the function that should be called to delete an object
- * successfully added via kobject_add().
- */
-void kobject_del(struct kobject *kobj)
-{
- struct kobject *parent = kobj->parent;
-
- __kobject_del(kobj);
- kobject_put(parent);
-}
EXPORT_SYMBOL(kobject_del);
/**
EXPORT_SYMBOL(kobject_del);
/**
*/
static void kobject_cleanup(struct kobject *kobj)
{
*/
static void kobject_cleanup(struct kobject *kobj)
{
- struct kobject *parent = kobj->parent;
struct kobj_type *t = get_ktype(kobj);
const char *name = kobj->name;
struct kobj_type *t = get_ktype(kobj);
const char *name = kobj->name;
if (kobj->state_in_sysfs) {
pr_debug("kobject: '%s' (%p): auto cleanup kobject_del\n",
kobject_name(kobj), kobj);
if (kobj->state_in_sysfs) {
pr_debug("kobject: '%s' (%p): auto cleanup kobject_del\n",
kobject_name(kobj), kobj);
pr_debug("kobject: '%s': free name\n", name);
kfree_const(name);
}
pr_debug("kobject: '%s': free name\n", name);
kfree_const(name);
}
}
#ifdef CONFIG_DEBUG_KOBJECT_RELEASE
}
#ifdef CONFIG_DEBUG_KOBJECT_RELEASE