Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759276AbZKKVRe (ORCPT ); Wed, 11 Nov 2009 16:17:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758929AbZKKVRd (ORCPT ); Wed, 11 Nov 2009 16:17:33 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:37618 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758868AbZKKVRb (ORCPT ); Wed, 11 Nov 2009 16:17:31 -0500 From: "Rafael J. Wysocki" To: Linus Torvalds 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: Wed, 11 Nov 2009 22:18:50 +0100 User-Agent: KMail/1.12.1 (Linux/2.6.32-rc6-tst; KDE/4.3.1; x86_64; ; ) Cc: Marcel Holtmann , Thomas Gleixner , Mike Galbraith , Ingo Molnar , LKML , pm list , Greg KH , Jesse Barnes , Tejun Heo , Oleg Nesterov , Oliver Neukum , linux-bluetooth@vger.kernel.org References: <200911091250.31626.rjw@sisk.pl> <1257970719.21467.4.camel@violet> In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200911112218.50616.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 937 Lines: 26 On Wednesday 11 November 2009, Linus Torvalds wrote: > > On Wed, 11 Nov 2009, Marcel Holtmann wrote: > > > > As it seems the btusb_close() only cancels the work workqueue and not > > the waker workqueue. Could that be the problem. > > It's the waker workqueue that Rafael apparently sees with the debug patch > from Oleg, so yeah, that sounds possible. > > Rafael, since apparently htusb_close() _is_ called, does the following > simpler patch fix it for you? I bet your patch does it too. Yes and yes. And in fact this is a post-2.6.31 regression introduced by commit 7bee549e197c9c0e92b89857a409675c1d5e9dff (Bluetooth: Add USB autosuspend support to btusb driver). Thanks, Rafael -- 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/