From mboxrd@z Thu Jan 1 00:00:00 1970 From: Milan Broz Subject: [PATCH] Do not process sysfs attributes when device is being destructed Date: Sun, 31 May 2009 22:55:00 +0200 Message-ID: <4A22EEA4.5010708@redhat.com> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: device-mapper development List-Id: dm-devel.ids Do not process sysfs attributes when device is being destructed. Otherwise code can cause BUG_ON(test_bit(DMF_FREEING, &md->flags)); in dm_put() call. Signed-off-by: Milan Broz --- drivers/md/dm.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index f43b099..9d3595b 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1806,6 +1806,10 @@ struct mapped_device *dm_get_from_kobject(struct kobject *kobj) if (&md->kobj != kobj) return NULL; + if (test_bit(DMF_FREEING, &md->flags) || + test_bit(DMF_DELETING, &md->flags)) + return NULL; + dm_get(md); return md; }