From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751146AbdFSOhB (ORCPT <rfc822;w@1wt.eu>);
        Mon, 19 Jun 2017 10:37:01 -0400
Received: from smtp02.citrix.com ([66.165.176.63]:54920 "EHLO
        SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1750984AbdFSOhA (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 19 Jun 2017 10:37:00 -0400
X-IronPort-AV: E=Sophos;i="5.39,361,1493683200"; 
   d="scan'208";a="436986361"
From: Ian Jackson <ian.jackson@eu.citrix.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Message-ID: <22855.57727.390987.969954@mariner.uk.xensource.com>
Date: Mon, 19 Jun 2017 15:36:47 +0100
To: Evgeniy Dushistov <dushistov@mail.ru>
CC: <xen-devel@lists.xensource.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Jonathan Cameron <jic23@kernel.org>, "Jens Axboe" <axboe@fb.com>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        <linux-fsdevel@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: ufs build failure (no __udivdi3) on i386 in linux tip (edf9364d3f92)
In-Reply-To: <E1dMx2x-0007xW-D8@osstest.test-lab.xenproject.org>
References: <E1dMx2x-0007xW-D8@osstest.test-lab.xenproject.org>
X-Mailer: VM 8.2.0b under 24.4.1 (i586-pc-linux-gnu)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

osstest service owner writes ("[linux-linus bisection] complete build-i386-pvops"):
> branch xen-unstable
> xenbranch xen-unstable
> job build-i386-pvops
> testid kernel-build
> 
> Tree: linux git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
> Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
> 
> *** Found and reproduced problem changeset ***
> 
>   Bug is in tree:  linux git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
>   Bug introduced:  edf9364d3f924aff6f77176b8e52a4b68e5c30d6
>   Bug not present: 791a9a666d1afe2603bcb2c6a4852d684e879252
>   Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/110566/

This is a merge commit, so the bisection result is not very useful:

   git-log --pretty=oneline 791a9a666d1afe2603bcb2c6a4852d684e879252..edf9364d3f924aff6f77176b8e52a4b68e5c30d6 | wc -l
   2233

The error message is this:

   ERROR: "__udivdi3" [fs/ufs/ufs.ko] undefined!
   scripts/Makefile.modpost:91: recipe for target '__modpost' failed
   make[1]: *** [__modpost] Error 1

I searched the commit log and CC'd a couple of people who have fixed
similar bugs elsewhere.

Ian.