Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764820AbYCUXIw (ORCPT ); Fri, 21 Mar 2008 19:08:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932133AbYCUWwF (ORCPT ); Fri, 21 Mar 2008 18:52:05 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:43575 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932131AbYCUWwD (ORCPT ); Fri, 21 Mar 2008 18:52:03 -0400 From: "Rafael J. Wysocki" To: Mikulas Patocka Subject: Re: APM crashes when IO is going on Date: Fri, 21 Mar 2008 23:51:19 +0100 User-Agent: KMail/1.9.6 (enterprise 20070904.708012) Cc: linux-kernel@vger.kernel.org, Bartlomiej Zolnierkiewicz References: <200803212245.13659.rjw@sisk.pl> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200803212351.20186.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1565 Lines: 40 On Friday, 21 of March 2008, Mikulas Patocka wrote: > On Fri, 21 Mar 2008, Rafael J. Wysocki wrote: > > > On Friday, 21 of March 2008, Mikulas Patocka wrote: > > > > > I found another problem --- present in 2.6.23.1, 2.6.25rc3, 2.6.25rc6 > > > > > > > > > > --- when I run three threads concurrently reading raw disk partition and > > > > > suspend, I get 100% reproducible failure. (with one thread running it > > > > > usually succeeds, sometimes fail) > > > > > > > > Are they userland threads or kernel threads? > > > > > > Useland threads. Just dd if=/dev/hda of=/dev/null > > > > > > > > Either the on-going I/O will jam BIOS and I need to remove power to > > > > > continue. > > > > > > > > > > Or the machine suspends, wakes up and reports "hda: lost interrupt" > > > > > (2.6.23.1 was able to recover from this condition, 2.6.25rc3,6 does not > > > > > recover and it is not able to send any more disk IOs). > > > > > > > > > > How is suspending disk IO supposed to work? > > > > > > > > That depends on the driver, if I understand your question correctly. > > > > > > The driver is normal IDE. > > > > Do you mean IDE_GENERIC/BLK_DEV_GENERIC? > > Compaq Triflex IDE. The computer is Compaq Armada 7400 (Pentium 2/300MHz) Can you attach a dmesg output taken after a fresh boot? 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/