Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761267AbYCUUBX (ORCPT ); Fri, 21 Mar 2008 16:01:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759588AbYCUUBJ (ORCPT ); Fri, 21 Mar 2008 16:01:09 -0400 Received: from artax.karlin.mff.cuni.cz ([195.113.31.125]:42869 "EHLO artax.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756439AbYCUUBH (ORCPT ); Fri, 21 Mar 2008 16:01:07 -0400 Date: Fri, 21 Mar 2008 21:01:06 +0100 (CET) From: Mikulas Patocka To: "Rafael J. Wysocki" cc: linux-kernel@vger.kernel.org Subject: APM crashes when IO is going on In-Reply-To: <200803210127.56437.rjw@sisk.pl> Message-ID: References: <200803201131.25828.rjw@sisk.pl> <200803210127.56437.rjw@sisk.pl> X-Personality-Disorder: Schizoid MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1647 Lines: 45 Hi > > > > I have an old notebook with APM and I am experiencing occasional APMD > > > > lockups after resume, with kernels 2.6.25rc1 snd 2.6.25rc3. They didn't > > > > happen with 2.6.24 or before. > > > > > > > > The bug happens about once a week or so. > > > > > > > > If you have any idea how to debug it, you can send me a test code. > > > > > > It is possible that the bug was fixed in -rc4. Can you please test -rc6 and > > > see if it's still present? > > > > > > Thanks, > > > Rafael > > > > I'm now running on -rc6, so I'll see (it takes some days for the bug to > > appear). Where is that patch that went to -rc4 and that may fix it? > > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7a8d37a37380e2b1500592d40b7ec384dbebe7a0 > > Thanks, > Rafael 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) 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? And why it doesn't? Mikulas -- 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/