[PATCH] mm: Fix kobject memleak in SLUB

[Tobin C. Harding]

Currently error return from kobject_init_and_add() is not followed by a
call to kobject_put().  This means there is a memory leak.

Add call to kobject_put() in error path of kobject_init_and_add().

Signed-off-by: Tobin C. Harding <to...@kernel.org>
---
 mm/slub.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/slub.c b/mm/slub.c
index d30ede89f4a6..84a9d6c06c27 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5756,8 +5756,10 @@ static int sysfs_slab_add(struct kmem_cache *s)
 
        s->kobj.kset = kset;
        err = kobject_init_and_add(&s->kobj, &slab_ktype, NULL, "%s", name);
-       if (err)
+       if (err) {
+               kobject_put(&s->kobj);
                goto out;
+       }
 
        err = sysfs_create_group(&s->kobj, &slab_attr_group);
        if (err)
-- 
2.21.0