From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751688Ab1DCGSl (ORCPT ); Sun, 3 Apr 2011 02:18:41 -0400 Received: from mailout-de.gmx.net ([213.165.64.23]:56517 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751468Ab1DCGSk (ORCPT ); Sun, 3 Apr 2011 02:18:40 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1/6zuASACT6GgWgzU8F8ExBKtYcmWabaccjGE2vVw UTb38ZPDNQoe/d Subject: Re: Soft lockup during suspend since ~2.6.36 From: Mike Galbraith To: Thilo-Alexander Ginkel Cc: linux-kernel@vger.kernel.org, Arnd Bergmann In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Date: Sun, 03 Apr 2011 08:18:35 +0200 Message-ID: <1301811515.7592.2.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.32.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adds CC to author of fingered commit. On Sun, 2011-04-03 at 04:03 +0200, Thilo-Alexander Ginkel wrote: > Hello everyone, > > recently, I upgraded my Linux kernel (running on an Intel Core 2 Quad) > from 2.6.35 to 2.6.38. Unfortunately, I have been experiencing > frequent (but sporadic) freezes during suspend (S3) since then, i.e., > the system became completely unresponsive (even MagicSysRq stopped > working) after having spun down the hard disks. > > I performed a bisect, which pointed out the following commit: > > bd25f4dd6972755579d0ea50d1a5ace2e9b00d1a is the first bad commit > commit bd25f4dd6972755579d0ea50d1a5ace2e9b00d1a > Author: Arnd Bergmann > Date: Sun Jul 11 15:34:05 2010 +0200 > > HID: hiddev: use usb_find_interface, get rid of BKL > > This removes the private hiddev_table in the usbhid > driver and changes it to use usb_find_interface > instead. > > The advantage is that we can avoid the race between > usb_register_dev and usb_open and no longer need the > big kernel lock. > > This doesn't introduce race condition -- the intf pointer could be > invalidated only in hiddev_disconnect() through usb_deregister_dev(), > but that will block on minor_rwsem and not actually remove the device > until usb_open(). > > Signed-off-by: Arnd Bergmann > Cc: Jiri Kosina > Cc: "Greg Kroah-Hartman" > Signed-off-by: Jiri Kosina > > :040000 040000 4ae14b3ba486373d7a354874e9ad334858f094e3 > 8041ffda20ca3020a6b60d64235ae179f8186bf0 M drivers > > Booting with no_console_suspend also brings up a BUG mentioning a soft > lockup. As my serial console breaks during suspend, I had to take > photos of the error messages: > https://secure.tgbyte.de/dropbox/eaghoh9M.jpg > https://secure.tgbyte.de/dropbox/ecae8ieR.jpg > https://secure.tgbyte.de/dropbox/vah5ooR9.jpg > > Unfortunately, I have so far been unable to get the complete error > message in a single screen capture (as the output is either too > verbose or too scarce). > > This bug is present up to (and including) 2.6.38 (I did not try any > later version). > > I'd appreciate your help to fix this issue. Let me know if you need > further details. > > Thanks, > Thilo > > P.S.: Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=31562 > -- > 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/