From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:52552 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753125AbbIZR0e (ORCPT ); Sat, 26 Sep 2015 13:26:34 -0400 Subject: Patch "md: flush ->event_work before stopping array." has been added to the 4.1-stable tree To: neilb@suse.com, gregkh@linuxfoundation.org, heinzm@redhat.com Cc: , From: Date: Sat, 26 Sep 2015 10:26:33 -0700 Message-ID: <1443288393154110@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled md: flush ->event_work before stopping array. to the 4.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: md-flush-event_work-before-stopping-array.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From ee5d004fd0591536a061451eba2b187092e9127c Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 22 Jul 2015 10:20:07 +1000 Subject: md: flush ->event_work before stopping array. From: NeilBrown commit ee5d004fd0591536a061451eba2b187092e9127c upstream. The 'event_work' worker used by dm-raid may still be running when the array is stopped. This can result in an oops. So flush the workqueue on which it is run after detaching and before destroying the device. Reported-by: Heinz Mauelshagen Signed-off-by: NeilBrown Fixes: 9d09e663d550 ("dm: raid456 basic support") Signed-off-by: Greg Kroah-Hartman --- drivers/md/md.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5365,6 +5365,8 @@ static void __md_stop(struct mddev *mdde { struct md_personality *pers = mddev->pers; mddev_detach(mddev); + /* Ensure ->event_work is done */ + flush_workqueue(md_misc_wq); spin_lock(&mddev->lock); mddev->ready = 0; mddev->pers = NULL; Patches currently in stable-queue which might be from neilb@suse.com are queue-4.1/md-raid5-avoid-races-when-changing-cache-size.patch queue-4.1/md-flush-event_work-before-stopping-array.patch queue-4.1/md-raid5-don-t-let-shrink_slab-shrink-too-far.patch queue-4.1/nfsv4-don-t-set-setattr-for-o_rdonly-o_excl.patch queue-4.1/md-raid10-always-set-reshape_safe-when-initializing-reshape_position.patch