From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755730Ab1I1X3b (ORCPT ); Wed, 28 Sep 2011 19:29:31 -0400 Received: from cantor2.suse.de ([195.135.220.15]:53650 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755704Ab1I1WjU (ORCPT ); Wed, 28 Sep 2011 18:39:20 -0400 X-Mailbox-Line: From gregkh@clark.kroah.org Wed Sep 28 15:01:30 2011 Message-Id: <20110928220130.535058158@clark.kroah.org> User-Agent: quilt/0.48-16.4 Date: Wed, 28 Sep 2011 15:00:14 -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, NeilBrown Subject: [050/244] md/linear: avoid corrupting structure while waiting for rcu_free to complete. In-Reply-To: <20110928220225.GA27128@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let us know. ------------------ From: NeilBrown commit 1b6afa17581027218088a18a9ceda600e0ddba7a upstream. I don't know what I was thinking putting 'rcu' after a dynamically sized array! The array could still be in use when we call rcu_free() (That is the point) so we mustn't corrupt it. Signed-off-by: NeilBrown Signed-off-by: Greg Kroah-Hartman --- drivers/md/linear.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/md/linear.h +++ b/drivers/md/linear.h @@ -10,9 +10,9 @@ typedef struct dev_info dev_info_t; struct linear_private_data { + struct rcu_head rcu; sector_t array_sectors; dev_info_t disks[0]; - struct rcu_head rcu; };