From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262048AbTJKJhN (ORCPT ); Sat, 11 Oct 2003 05:37:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263270AbTJKJhM (ORCPT ); Sat, 11 Oct 2003 05:37:12 -0400 Received: from dbl.q-ag.de ([80.146.160.66]:20148 "EHLO dbl.q-ag.de") by vger.kernel.org with ESMTP id S262048AbTJKJhL (ORCPT ); Sat, 11 Oct 2003 05:37:11 -0400 Message-ID: <3F87CF3D.8080402@colorfullife.com> Date: Sat, 11 Oct 2003 11:37:01 +0200 From: Manfred Spraul User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030701 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Mike Galbraith CC: Zwane Mwaikambo , linux-kernel@vger.kernel.org Subject: Re: 2.6.0-test7 DEBUG_PAGEALLOC oops Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Mike wrote: >Unable to handle kernel paging request at virtual address c034a000 > printing eip: >c0134d5a >*pde = 00102027 >*pte = 0034a000 > Fault trying to read from address 0xc034a000: the page is not mapped. >Oops: 0000 [#1] >CPU: 0 >EIP: 0060:[] Not tainted >EFLAGS: 00010002 >EIP is at store_stackinfo+0x4e/0x80 > In store_stackinfo: the function stores a backtrace of the last kmem_cache_free caller in the object - might be useful, and the memory is not used. >eax: 00000000 ebx: c7802f98 ecx: c0301390 edx: c030138c >esi: c0349ffe edi: 017e0008 ebp: c0349da6 esp: c0349d96 >ds: 007b es: 007b ss: 0068 >Process swapper (pid: 0, threadinfo=c0348000 task=c02fcbe0) > The esp value is sane, the stack is at 0xc0348000, and the fault is at 'a000: just behind the end of the stack. I assume the fauling line is svalue = *sptr++; It looks like store stackinfo accesses memory behind the end of the stack. Which gcc version do you use? Could you send me mm/slab.o? -- Manfred