From: Thomas Gleixner <tglx@linutronix.de>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Oleg Nesterov <oleg@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Mike Galbraith <efault@gmx.de>, Ingo Molnar <mingo@elte.hu>,
LKML <linux-kernel@vger.kernel.org>,
pm list <linux-pm@lists.linux-foundation.org>,
Greg KH <gregkh@suse.de>, Jesse Barnes <jbarnes@virtuousgeek.org>,
Tejun Heo <tj@kernel.org>
Subject: Re: GPF in run_workqueue()/list_del_init(cwq->worklist.next) on resume (was: Re: Help needed: Resume problems in 2.6.32-rc, perhaps related to preempt_count leakage in keventd)
Date: Thu, 12 Nov 2009 21:55:50 +0100 (CET) [thread overview]
Message-ID: <alpine.LFD.2.00.0911122153320.24119@localhost.localdomain> (raw)
In-Reply-To: <200911122153.12419.rjw@sisk.pl>
On Thu, 12 Nov 2009, Rafael J. Wysocki wrote:
> On Thursday 12 November 2009, Thomas Gleixner wrote:
> > On Wed, 11 Nov 2009, Oleg Nesterov wrote:
> > > Well, yes. Because any buggy user can easily kill the system, and we
> > > constantly have the bugs like this one.
> > >
> > > I think we should teach workqueue.c to use debugobjects.c at least.
> >
> > Here you go. Would be interesting to know whether it catches the
> > problem at hand.
>
> How would I tell if it did?
Apply the patch, enable debugobjects and try to reproduce the failure
- w/o the fix patch of course :)
debugobjects should catch the attempt to free the memory which holds
the work_struct, cancel it and print a backtrace where this happened.
Thanks,
tglx
next prev parent reply other threads:[~2009-11-12 20:57 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-09 11:50 Help needed: Resume problems in 2.6.32-rc, perhaps related to preempt_count leakage in keventd Rafael J. Wysocki
2009-11-09 12:02 ` Ingo Molnar
2009-11-09 12:24 ` Rafael J. Wysocki
2009-11-09 12:49 ` Ingo Molnar
2009-11-09 14:02 ` Thomas Gleixner
2009-11-09 14:16 ` Mike Galbraith
2009-11-09 14:27 ` Rafael J. Wysocki
2009-11-09 14:30 ` Mike Galbraith
2009-11-09 15:47 ` Rafael J. Wysocki
2009-11-09 16:19 ` Mike Galbraith
2009-11-09 17:36 ` Rafael J. Wysocki
2009-11-09 18:50 ` Thomas Gleixner
2009-11-09 20:00 ` Rafael J. Wysocki
2009-11-09 20:31 ` [linux-pm] " Alan Stern
2009-11-09 20:48 ` Rafael J. Wysocki
2009-11-09 21:24 ` Alan Stern
2009-11-09 20:45 ` GPF in run_workqueue()/list_del_init(cwq->worklist.next) on resume (was: Re: Help needed: Resume problems in 2.6.32-rc, perhaps related to preempt_count leakage in keventd) Rafael J. Wysocki
2009-11-09 21:42 ` Linus Torvalds
2009-11-10 0:19 ` Rafael J. Wysocki
2009-11-10 22:02 ` Linus Torvalds
2009-11-11 8:08 ` GPF in run_workqueue()/list_del_init(cwq->worklist.next) on resume Tejun Heo
2009-11-11 18:13 ` Oleg Nesterov
2009-11-12 4:56 ` Tejun Heo
2009-11-12 18:35 ` Oleg Nesterov
2009-11-12 19:14 ` Tejun Heo
2009-11-16 11:01 ` Tejun Heo
2009-11-11 11:52 ` GPF in run_workqueue()/list_del_init(cwq->worklist.next) on resume (was: Re: Help needed: Resume problems in 2.6.32-rc, perhaps related to preempt_count leakage in keventd) Rafael J. Wysocki
2009-11-11 19:52 ` Linus Torvalds
2009-11-11 20:18 ` Marcel Holtmann
2009-11-11 20:25 ` Linus Torvalds
2009-11-11 21:18 ` Rafael J. Wysocki
2009-11-11 21:13 ` Oliver Neukum
2009-11-11 21:38 ` Linus Torvalds
2009-11-11 21:44 ` Oliver Neukum
2009-11-11 16:13 ` Oleg Nesterov
2009-11-11 20:00 ` Rafael J. Wysocki
2009-11-11 20:11 ` Linus Torvalds
2009-11-11 20:20 ` Marcel Holtmann
2009-11-11 20:24 ` Oleg Nesterov
2009-11-11 21:15 ` Oliver Neukum
2009-11-11 17:17 ` Oleg Nesterov
2009-11-12 17:33 ` Thomas Gleixner
2009-11-12 19:17 ` GPF in run_workqueue()/list_del_init(cwq->worklist.next) on resume Tejun Heo
2009-11-12 20:53 ` Thomas Gleixner
2009-11-12 20:53 ` GPF in run_workqueue()/list_del_init(cwq->worklist.next) on resume (was: Re: Help needed: Resume problems in 2.6.32-rc, perhaps related to preempt_count leakage in keventd) Rafael J. Wysocki
2009-11-12 20:55 ` Thomas Gleixner [this message]
2009-11-12 22:55 ` Rafael J. Wysocki
2009-11-12 23:08 ` Thomas Gleixner
2009-11-15 23:37 ` Frederic Weisbecker
2009-11-15 23:40 ` Frederic Weisbecker
2009-11-09 19:13 ` Help needed: Resume problems in 2.6.32-rc, perhaps related to preempt_count leakage in keventd Thomas Gleixner
2009-11-09 20:03 ` Rafael J. Wysocki
2009-11-09 14:26 ` Rafael J. Wysocki
2009-11-09 14:44 ` Mike Galbraith
2009-11-09 15:47 ` Rafael J. Wysocki
2009-11-09 15:57 ` Linus Torvalds
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