From: Oleg Nesterov <oleg@tv-sign.ru>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Andrew Morton <akpm@linux-foundation.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>, Pavel Machek <pavel@ucw.cz>,
USB development list <linux-usb-devel@lists.sourceforge.net>,
Kernel development list <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.22-rc2-mm1
Date: Wed, 23 May 2007 20:21:25 +0400 [thread overview]
Message-ID: <20070523162125.GA321@tv-sign.ru> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0705231249570.3673-100000@iolanthe.rowland.org>
On 05/23, Alan Stern wrote:
>
> Okay, it's clear that the two threads are in deadlock. It's not clear
> how the deadlock arose to begin with -- apparently there was a remote
> wakeup request for a root hub at the same time as a device below that
> root hub was disconnected, which doesn't make much sense.
Please note that this flush_workqueue() was not safe anyway. We are freezing
tasks, and ksuspend_usb_wq is freezeable. So, it could be frozen before
"khubd" task, and we have another deadlock.
> Anyway, this looks like a good place to use cancel_work_sync(). The
Could you use cancel_rearming_delayed_work() ? (It should be renamed to
cancel_delayed_work_sync()).
Oleg.
next prev parent reply other threads:[~2007-05-23 17:15 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-23 7:42 2.6.22-rc2-mm1 Andrew Morton
2007-05-23 7:48 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-23 9:22 ` 2.6.22-rc2-mm1 Rafael J. Wysocki
2007-05-23 14:47 ` 2.6.22-rc2-mm1 Alan Stern
2007-05-23 15:54 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-23 16:09 ` 2.6.22-rc2-mm1 Oleg Nesterov
2007-05-23 17:00 ` 2.6.22-rc2-mm1 Alan Stern
2007-05-23 16:21 ` Oleg Nesterov [this message]
2007-05-23 18:41 ` 2.6.22-rc2-mm1 Alan Stern
2007-05-23 9:47 ` 2.6.22-rc2-mm1 Michal Piotrowski
2007-05-23 17:18 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-23 21:05 ` 2.6.22-rc2-mm1 Michal Piotrowski
2007-05-23 22:01 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-23 22:18 ` 2.6.22-rc2-mm1 Michal Piotrowski
2007-05-23 22:27 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-23 22:37 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-23 23:36 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-24 1:21 ` 2.6.22-rc2-mm1 Randy Dunlap
2007-05-24 2:43 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-24 3:00 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-24 3:26 ` 2.6.22-rc2-mm1 Randy Dunlap
2007-05-24 7:31 ` 2.6.22-rc2-mm1 Ingo Molnar
2007-05-24 16:40 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-24 21:20 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-24 21:29 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-24 21:55 ` 2.6.22-rc2-mm1 Randy Dunlap
2007-05-24 22:35 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-24 22:53 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-30 21:34 ` [PATCH 1/3] hexdump: more output formatting Randy Dunlap
2007-05-30 21:42 ` Christoph Lameter
2007-05-30 21:45 ` Randy Dunlap
2007-05-31 1:45 ` [PATCH 1/3 v2] " Randy Dunlap
2007-05-30 21:56 ` [PATCH 1/3] " Satyam Sharma
2007-05-30 22:03 ` Randy Dunlap
2007-05-30 22:11 ` Satyam Sharma
2007-05-30 22:18 ` Christoph Lameter
2007-05-30 22:41 ` Satyam Sharma
2007-05-30 22:44 ` Randy Dunlap
2007-05-30 22:48 ` Satyam Sharma
2007-05-30 22:59 ` Randy Dunlap
2007-05-30 22:25 ` Randy Dunlap
2007-05-30 22:36 ` Jesper Juhl
2007-05-30 23:04 ` Randy Dunlap
2007-05-30 23:07 ` Jesper Juhl
2007-05-30 21:34 ` [PATCH 2/3 -mm] slub: use lib/hexdump Randy Dunlap
2007-05-30 21:45 ` Christoph Lameter
2007-05-30 21:48 ` Randy Dunlap
2007-05-30 21:51 ` Christoph Lameter
2007-05-30 21:54 ` Randy Dunlap
2007-05-30 22:03 ` Christoph Lameter
2007-05-30 22:06 ` Randy Dunlap
2007-05-31 1:39 ` Randy Dunlap
2007-05-23 22:24 ` 2.6.22-rc2-mm1 Christoph Lameter
2007-05-23 12:01 ` 2.6.22-rc2-mm1 Gabriel C
2007-05-23 16:01 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-23 15:02 ` 2.6.22-rc2-mm1 William Lee Irwin III
2007-05-23 15:28 ` 2.6.22-rc2-mm1 William Lee Irwin III
2007-05-23 16:08 ` 2.6.22-rc2-mm1 William Lee Irwin III
2007-05-23 16:29 ` 2.6.22-rc2-mm1 William Lee Irwin III
2007-05-23 17:27 ` 2.6.22-rc2-mm1 William Lee Irwin III
2007-05-23 23:17 ` 2.6.22-rc2-mm1 Zan Lynx
2007-05-23 23:27 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-23 23:40 ` 2.6.22-rc2-mm1 Jiri Kosina
2007-05-24 3:28 ` 2.6.22-rc2-mm1 Dmitry Torokhov
2007-05-24 7:28 ` 2.6.22-rc2-mm1 Jiri Kosina
2007-05-30 14:08 ` [PATCH] Input: i8042 - cleanup of debug code (was Re: 2.6.22-rc2-mm1) Jiri Kosina
2007-05-30 14:27 ` Dmitry Torokhov
2007-05-30 14:30 ` Jiri Kosina
[not found] ` <1180058760.7001.6.camel@oberon.rnd.esoft.com>
2007-05-25 7:23 ` 2.6.22-rc2-mm1 Jiri Kosina
2007-05-23 23:50 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-24 10:36 ` rmmod e1000 hangs (Was Re: 2.6.22-rc2-mm1) Jeremy Fitzhardinge
2007-05-24 10:47 ` Herbert Xu
2007-05-24 10:54 ` Herbert Xu
2007-05-24 14:44 ` Kok, Auke
2007-05-25 12:54 ` Herbert Xu
2007-05-25 13:04 ` Herbert Xu
2007-05-25 13:32 ` Herbert Xu
2007-05-25 22:12 ` Kok, Auke
2007-05-25 23:48 ` Jeff Garzik
2007-05-26 0:10 ` Herbert Xu
2007-05-25 21:20 ` idle=poll burns my box [was Re: 2.6.22-rc2-mm1] J.A. Magallón
2007-05-25 21:52 ` Andrew Morton
2007-05-26 15:59 ` 2.6.22-rc2-mm1 Tilman Schmidt
2007-05-26 16:01 ` 2.6.22-rc2-mm1 Andrew Morton
2007-05-27 22:16 ` 2.6.22-rc2-mm1 Tilman Schmidt
2007-05-27 22:41 ` 2.6.22-rc2-mm1 Kay Sievers
2007-05-28 17:22 ` 2.6.22-rc2-mm1 Cornelia Huck
2007-05-29 7:56 ` 2.6.22-rc2-mm1 Kay Sievers
2007-05-29 7:25 ` 2.6.22-rc2-mm1 Cornelia Huck
2007-05-29 14:43 ` 2.6.22-rc2-mm1 Matt Mackall
2007-05-29 16:55 ` 2.6.22-rc2-mm1 Tilman Schmidt
2007-05-29 17:25 ` 2.6.22-rc2-mm1 Cornelia Huck
2007-06-01 12:38 ` 2.6.22-rc2-mm1 Greg KH
2007-07-03 8:50 ` 2.6.22-rc2-mm1 Cornelia Huck
2007-07-12 6:00 ` 2.6.22-rc2-mm1 Greg KH
2007-05-28 10:27 ` 2.6.22-rc2-mm1 - a different BUG: at mm/slab.c:777 __find_general_cachep() Valdis.Kletnieks
2007-05-28 10:43 ` Pekka Enberg
2007-05-28 11:12 ` Valdis.Kletnieks
2007-05-29 4:22 ` 2.6.22-rc2-mm1: SLUB Randy Dunlap
2007-05-29 17:13 ` Christoph Lameter
2007-05-29 18:13 ` Randy Dunlap
2007-05-29 18:30 ` Christoph Lameter
2007-05-29 18:32 ` Christoph Lameter
2007-05-29 18:59 ` Randy Dunlap
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