From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763081AbYBBOTR (ORCPT ); Sat, 2 Feb 2008 09:19:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753890AbYBBOTJ (ORCPT ); Sat, 2 Feb 2008 09:19:09 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:44702 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753888AbYBBOTI (ORCPT ); Sat, 2 Feb 2008 09:19:08 -0500 Date: Sat, 2 Feb 2008 15:18:57 +0100 From: Ingo Molnar To: Sam Ravnborg Cc: linux-kernel@vger.kernel.org, Jens Axboe Subject: Re: [scsi bug] spurious build failures in aic7xxx Message-ID: <20080202141857.GA8635@elte.hu> References: <20080201225056.GA18302@elte.hu> <20080202135935.GA23838@uranus.ravnborg.org> <20080202140326.GA6544@elte.hu> <20080202140630.GA7939@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080202140630.GA7939@elte.hu> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org i should also specify the build environment: it's a distcc setup with 5-10 hosts active at a time, so highly parallel with large, networking related delays. It's make -j130: nice -15 /usr/bin/time make -j130 bzImage ARCH=i386 \ CROSS_COMPILE='distcc \ /opt/crosstool/gcc-4.2.2-glibc-2.3.6/i686-unknown-linux-gnu-' the build host is a 64-bit quad CPU box, so highly parallel as well. before this i did about a thousand x86.git builds/boots a day without any build (or boot) failure, so i'm 100% sure that the build race was not present before. It started triggering it a few days ago, roughly when the commit you suspected went in. here's all SCSI build failures logged from the past 1-2 days: 2 drivers/scsi/aic7xxx/aic79xx_reg.h 4 drivers/scsi/aic7xxx/aic7xxx.h 4 drivers/scsi/lpfc/lpfc_init.c 12 drivers/scsi/aic7xxx/aic7xxx_osm.h 108 drivers/scsi/aic7xxx/aic7xxx_inline.h 280 drivers/scsi/aic7xxx/aic7xxx_pci.c first column is the number of error lines from logs. When i turned off all the AICxxxx builds (all 3 drivers for good measure), the build failures went away. [but this excludes one of my testboxes from qa coverage - which has aic7xxx hardware - so it would be nice to fix this.] the host box is Fedora 8, make-3.81-10.fc8. gcc-4.2.2 crosscompiler, built from sources. (i.e. not distro patched) Ingo