Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761825AbZGABPh (ORCPT ); Tue, 30 Jun 2009 21:15:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758684AbZGAAfv (ORCPT ); Tue, 30 Jun 2009 20:35:51 -0400 Received: from kroah.org ([198.145.64.141]:60703 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761589AbZGAAfn (ORCPT ); Tue, 30 Jun 2009 20:35:43 -0400 X-Mailbox-Line: From gregkh@mini.kroah.org Tue Jun 30 17:24:42 2009 Message-Id: <20090701002442.075083210@mini.kroah.org> User-Agent: quilt/0.48-1 Date: Tue, 30 Jun 2009 17:24:25 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Milan Broz , Alasdair G Kergon Subject: [patch 096/108] dm: sysfs skip output when device is being destroyed References: <20090701002249.937782934@mini.kroah.org> Content-Disposition: inline; filename=dm-sysfs-skip-output-when-device-is-being-destroyed.patch In-Reply-To: <20090701002838.GA7100@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1095 Lines: 32 2.6.30-stable review patch. If anyone has any objections, please let us know. ------------------ From: Milan Broz commit 4d89b7b4e4726893453d0fb4ddbb5b3e16353994 upstream. Do not process sysfs attributes when device is being destroyed. Otherwise code can cause BUG_ON(test_bit(DMF_FREEING, &md->flags)); in dm_put() call. Signed-off-by: Milan Broz Signed-off-by: Alasdair G Kergon Signed-off-by: Greg Kroah-Hartman --- drivers/md/dm.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1780,6 +1780,10 @@ struct mapped_device *dm_get_from_kobjec 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; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/