From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1KVPuT-00065t-T7 for user-mode-linux-devel@lists.sourceforge.net; Tue, 19 Aug 2008 05:02:02 -0700 Received: from static-220-247-10-204.b-man.svips.gol.ne.jp ([220.247.10.204] helo=tadamune.kami.home) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1KVPuT-0001VD-1y for user-mode-linux-devel@lists.sourceforge.net; Tue, 19 Aug 2008 05:02:01 -0700 Date: Tue, 19 Aug 2008 21:01:55 +0900 From: Mattia Dongili Message-ID: <20080819120155.GD7425@inferi.kami.home> References: <20080818230509.23819.90290.reportbug@carrera.home.cobb.me.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20080818230509.23819.90290.reportbug@carrera.home.cobb.me.uk> Subject: Re: [uml-devel] [Pkg-uml-pkgs] Bug#495611: user-mode-linux: page_mapcount(page) went negative! List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: user-mode-linux-devel-bounces@lists.sourceforge.net Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net To: UML-devel Cc: 495611@bugs.debian.org, Graham Cobb Hello again Jeff, one more bug report on 2.6.26.2. It looks like .25 is affected as well are both suffering from it. On Tue, Aug 19, 2008 at 12:05:09AM +0100, Graham Cobb wrote: > Package: user-mode-linux > Version: 2.6.24-1um-1 > Severity: normal > > I use Debian lenny guest environment in UML to automatically build software > for the Nokia Maemo environment. > > The overnight all work fine using UML 2.6.24-1um-1. However, UML > 2.6.25-1um-2 and UML 2.6.26-1um-2 both crash, early in each build, with > the kernel panic shown below. I can easily reproduce this with my automated > build system although I have not yet found another stress test (even doing a > kernel build in the guest environment) which reproduces it. > > The crash details are: > > Eeek! page_mapcount(page) went negative! (-1) > page pfn = 2cc > page->flags = 400 > page->count = 1 > page->mapping = 00000000 > vma->vm_ops = 0x83accc8 > vma->vm_ops->fault = special_mapping_fault+0x0/0x60 > BUG: failure at mm/rmap.c:669/page_remove_rmap()! > Kernel panic - not syncing: BUG! > > EIP: 0073:[<080a407a>] CPU: 0 Not tainted ESP: 007b:bf9ec8fc EFLAGS: 00000246 > Not tainted > EAX: ffffffda EBX: 00008000 ECX: 001b6000 EDX: 00000005 > ESI: 00000812 EDI: 00000004 EBP: 00000000 DS: 007b ES: 007b > 277ebd38: [<0809ec74>] notifier_call_chain+0x34/0x70 > 277ebd5c: [<08311f2a>] panic+0x71/0xff > 277ebd78: [<080cb4e1>] page_remove_rmap+0x151/0x160 > 277ebd90: [<080c3f99>] unmap_vmas+0x2c9/0x600 > 277ebda4: [<08060fd3>] flush_tlb_page+0x113/0x1f0 > 277ebdf8: [<080c7895>] unmap_region+0xa5/0x150 > 277ebe2c: [<080c8a98>] do_munmap+0x1d8/0x290 > 277ebe58: [<080c9544>] mmap_region+0xd4/0x590 > 277ebe90: [<080c7230>] arch_get_unmapped_area+0x0/0x160 > 277ebeb8: [<080b4870>] generic_file_mmap+0x0/0x60 > 277ebec4: [<080c9c1a>] do_mmap_pgoff+0x21a/0x300 > 277ebf00: [<08060846>] sys_mmap2+0x76/0xe0 > 277ebf30: [<080627aa>] handle_syscall+0x8a/0xc0 > 277ebf4c: [<080607d0>] sys_mmap2+0x0/0xe0 > 277ebf78: [<080789ca>] userspace+0x48a/0x510 > 277ebf90: [<08075675>] os_set_thread_area+0x25/0x50 > 277ebfec: [<0805f72d>] fork_handler+0x5d/0x70 > > > -- System Information: > Debian Release: lenny/sid > APT prefers testing > APT policy: (900, 'testing') > Architecture: i386 (i686) > > Kernel: Linux 2.6.25-2-686 (SMP w/1 CPU core) > Locale: LANG=en_IE@euro, LC_CTYPE=en_IE@euro (charmap=ISO-8859-15) (ignored: LC_ALL set to en_IE@euro) > Shell: /bin/sh linked to /bin/bash > > Versions of packages user-mode-linux depends on: > ii uml-utilities 20070815-1.1 User-mode Linux (utility programs) > > user-mode-linux recommends no packages. > > Versions of packages user-mode-linux suggests: > ii konsole [x-terminal- 4:3.5.9.dfsg.1-2+b1 X terminal emulator for KDE > pn linux-patch-skas (no description available) > pn rootstrap (no description available) > ii rxvt [x-terminal-emu 1:2.6.4-14 VT102 terminal emulator for the X > pn slirp (no description available) > pn user-mode-linux-doc (no description available) > ii xterm [x-terminal-em 235-1 X terminal emulator > > -- no debconf information > > > > _______________________________________________ > Pkg-uml-pkgs mailing list > Pkg-uml-pkgs@lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/pkg-uml-pkgs > -- mattia :wq! ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel