From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760344AbYBMASS (ORCPT ); Tue, 12 Feb 2008 19:18:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752407AbYBMAR7 (ORCPT ); Tue, 12 Feb 2008 19:17:59 -0500 Received: from smtp104.mail.mud.yahoo.com ([209.191.85.214]:33139 "HELO smtp104.mail.mud.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752322AbYBMAR6 (ORCPT ); Tue, 12 Feb 2008 19:17:58 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com.au; h=Received:X-YMail-OSG:X-Yahoo-Newman-Property:From:To:Subject:Date:User-Agent:Cc:References:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-Disposition:Message-Id; b=kHDKA+kitACxkDbAf8sUYllD22KXZA93DQi/jEzbFAQ79CYptBB/8ECl27go2S28pc0xmrlcafeWAnVAK/9Tb0y13NDd+tLzScJmewL55ln+g/aN9TzRd3AGbpg/WMoV19vX9F/tBWQ9FiUCRDaiF6k2/kBBnxJ4MJeC7y2RziE= ; X-YMail-OSG: yExIHU8VM1lc9VfCqJLR0ai.BrufZlVix8ex4heYMLxoJsqDw068KH5lo.MftQyCH3GP36ZtoA-- X-Yahoo-Newman-Property: ymail-3 From: Nick Piggin To: Alexey Dobriyan Subject: Re: 2.6.24-sha1: RIP [] iov_iter_advance+0x38/0x70 Date: Wed, 13 Feb 2008 11:17:37 +1100 User-Agent: KMail/1.9.5 Cc: Andrew Morton , linux-kernel@vger.kernel.org References: <20080210140031.GA1754@martell.zuzino.mipt.ru> <20080212140430.c85e6018.akpm@linux-foundation.org> <20080212222704.GC2144@martell.zuzino.mipt.ru> In-Reply-To: <20080212222704.GC2144@martell.zuzino.mipt.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200802131117.37389.nickpiggin@yahoo.com.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 13 February 2008 09:27, Alexey Dobriyan wrote: > On Tue, Feb 12, 2008 at 02:04:30PM -0800, Andrew Morton wrote: > > On Sun, 10 Feb 2008 17:00:31 +0300 > > > > Alexey Dobriyan wrote: > > > This happened during LTP. FWIW, modprobe/rmmod trivial empty module > > > together with cat /proc/*/wchan and cat /proc/modules were also > > > running. > > > > > > Box is E6400, much debugging is on, config below. > > > > > > > > > [ 4057.310000] BUG: unable to handle kernel paging request at > > > ffff810101dbc008 [ 4057.310000] IP: [] > > > iov_iter_advance+0x38/0x70 [ 4057.310000] PGD 8063 PUD c063 PMD > > > 153baa163 PTE 8000000101dbc160 [ 4057.310000] Oops: 0000 [1] SMP > > > DEBUG_PAGEALLOC > > > [ 4057.310000] CPU 0 > > > [ 4057.310000] Modules linked in: [last unloaded: foo] > > > > what is this foo.ko of which you speak, and did it wreck your kernel? > > It's a trivial dumb module which does nothing but loads and unloads. > I redid ftest03 later without any suspicious activity and it oopsed the > same way. Ah crap. Hmm, maybe I didn't consider all cases with my last patch to that code... is there an easy way to get the ftest03 source and run it?