From: Xiaotian Feng <dfeng@redhat.com>
To: penberg@cs.helsinki.fi
Cc: cl@linux-foundation.org, linux-mm@kvack.org,
linux-kernel.vger.kernel.org@redhat.com,
Xiaotian Feng <dfeng@redhat.com>
Subject: [PATCH] slub: release kobject if sysfs_create_group failed in sysfs_slab_add
Date: Wed, 22 Jul 2009 11:28:53 +0800 [thread overview]
Message-ID: <1248233333-22563-1-git-send-email-dfeng@redhat.com> (raw)
When CONFIG_SLUB_DEBUG is enabled, sysfs_slab_add should unlink and put the
kobject if sysfs_create_group failed. Otherwise, sysfs_slab_add returns error
then free kmem_cache s, thus memory of s->kobj is leaked.
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
---
mm/slub.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index b9f1491..f910964 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4543,8 +4543,11 @@ static int sysfs_slab_add(struct kmem_cache *s)
}
err = sysfs_create_group(&s->kobj, &slab_attr_group);
- if (err)
+ if (err) {
+ kobject_del(&s->kobj);
+ kobject_put(&s->kobj);
return err;
+ }
kobject_uevent(&s->kobj, KOBJ_ADD);
if (!unmergeable) {
/* Setup first alias */
--
1.6.2.5
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next reply other threads:[~2009-07-22 3:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-22 3:28 Xiaotian Feng [this message]
2009-07-22 6:17 ` [PATCH] slub: release kobject if sysfs_create_group failed in sysfs_slab_add Pekka Enberg
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