Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422630AbWJLHAg (ORCPT ); Thu, 12 Oct 2006 03:00:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1422770AbWJLHAg (ORCPT ); Thu, 12 Oct 2006 03:00:36 -0400 Received: from smtp.osdl.org ([65.172.181.4]:41659 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1422630AbWJLHAg (ORCPT ); Thu, 12 Oct 2006 03:00:36 -0400 Date: Thu, 12 Oct 2006 00:00:26 -0700 From: Andrew Morton To: Michael Harris Cc: linux-kernel@vger.kernel.org, Hugh Dickins Subject: Re: 2.6.18: Kernel BUG at mm/rmap.c:522 Message-Id: <20061012000026.8b6ea2e5.akpm@osdl.org> In-Reply-To: <20061011160740.GA6868@dingu.igconcepts.com> References: <20061011160740.GA6868@dingu.igconcepts.com> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1823 Lines: 40 On Wed, 11 Oct 2006 11:07:40 -0500 Michael Harris wrote: > Hi, I can readily reproduce this with 2.6.18 doing 4 simultanous kernel > compiles on two disks to load test a P4 3.2 HT with 2GB. I have SMP and > SMT scheduling enabled, and the 4GB memory option. Here is output with > CONFIG_DEBUG_VM enabled followed by another crash before CONFIG_DEBUG_VM > was enabled. Repeatable. That's good news. > > [*ROOT* hen /usr/src/linux-2.6.18 14 ] uname -a > Linux hen.igconcepts.com 2.6.18 #2 SMP Tue Oct 10 11:46:01 CDT 2006 i686 i686 i386 GNU/Linux > [*ROOT* hen /usr/src/linux-2.6.18 15 ] gcc -v > Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2.2/specs > Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --host=i386-redhat-linux > Thread model: posix > gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5) > > > ---------------- > Oct 11 04:53:35 hen kernel: VM: killing process cc1 > Oct 11 04:53:35 hen kernel: swap_free: Unused swap offset entry 00004000 > Oct 11 04:53:35 hen kernel: Eeek! page_mapcount(page) went negative! (-1) > Oct 11 04:53:35 hen kernel: page->flags = c0080014 > Oct 11 04:53:35 hen kernel: page->count = 0 > Oct 11 04:53:35 hen kernel: page->mapping = 00000000 > Oct 11 04:53:35 hen kernel: ------------[ cut here ]------------ > Oct 11 04:53:35 hen kernel: kernel BUG at mm/rmap.c:522! Does that machine run any earlier kernels OK? If so, which? Thanks. - 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/