Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754109AbZFHICi (ORCPT ); Mon, 8 Jun 2009 04:02:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753139AbZFHICX (ORCPT ); Mon, 8 Jun 2009 04:02:23 -0400 Received: from acsinet12.oracle.com ([141.146.126.234]:61721 "EHLO acsinet12.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752302AbZFHICW (ORCPT ); Mon, 8 Jun 2009 04:02:22 -0400 Message-ID: <4A2CC52B.9010602@oracle.com> Date: Mon, 08 Jun 2009 16:00:43 +0800 From: Tao Ma User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: =?UTF-8?B?QW3DqXJpY28gV2FuZw==?= CC: Yinghai Lu , Andrew Morton , linux-kernel@vger.kernel.org, Ingo Molnar , Andi Kleen Subject: Re: /proc/kcore has a unreasonable size(281474974617600) in x86_64 2.6.30-rc8. References: <20090605075614.GC8171@cr0.nay.redhat.com> <20090605021424.ba352b0f.akpm@linux-foundation.org> <4A28E5C9.6010408@oracle.com> <20090605095155.GC8354@cr0.nay.redhat.com> <4A292B0D.8030807@oracle.com> <4A295AFB.80909@kernel.org> <4A2A7F33.4030807@oracle.com> <4A2AEBE3.4000100@kernel.org> <20090608015242.GB2596@cr0.nay.redhat.com> <4A2CA96D.3090502@oracle.com> <2375c9f90906072341o2cded749m45bdddfdb499469@mail.gmail.com> In-Reply-To: <2375c9f90906072341o2cded749m45bdddfdb499469@mail.gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Source-IP: abhmt008.oracle.com [141.146.116.17] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A09020A.4A2CC52F.0116:SCFSTAT5015188,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2265 Lines: 70 Américo Wang wrote: > On Mon, Jun 8, 2009 at 2:02 PM, Tao Ma wrote: >> >> Amerigo Wang wrote: >>> On Sat, Jun 06, 2009 at 03:21:23PM -0700, Yinghai Lu wrote: >>>> Tao Ma wrote: >>>>> Yinghai Lu wrote: >>>>>> Tao Ma wrote: >>>>>>> Amerigo Wang wrote: >>>>>>>> On Fri, Jun 05, 2009 at 05:30:49PM +0800, Tao Ma wrote: >>>>>>>>>> Please send the boot logs: dmesg -s 1000000 > foo >>>>>>>>> attached. >>>>>>>>> #######high memory 18446612137615818752, size_t 18446612137615818752 >>>>>>>>> #######kcore size 5301604352, PAGE_OFFSET 0, PAGE_SIZE 4096 >>>>>>>> These two lines must be added by yourself... >>>>>>>> >>>>>>>> What?! >>>>>>>> How can PAGE_OFFSET be 0?? >>>>>>>> Can you show us these two printk() you just added? >>>>>>>> >>>>>>>> And, the size of kcore is not the crazy number in the subject... >>>>>>>> This one is much saner.. >>>>>>> Sorry, I used the wrong printk. the correct one is: >>>>>>> #######high memory 18446612137615818752, size_t 18446612137615818752 >>>>>>> #######kcore size 5301604352, PAGE_OFFSET 18446612132314218496, >>>>>>> PAGE_SIZE 4096 >>>>>>> >>>>>> %lx should be used. >>>>>> >>>>>> also you compiler doesn't like >>>>>> >>>>>> high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; >>>>>> >>>>>> in setup.c? >>>>> Sorry fo my poor English, bug what do you mean? >>>>> >>>>> I just printk in the setup.c and the result is >>>>> >>>>> @@@@high_momory ffff88013c000000 >>>> so that value print out is right. >>> Yeah. >>> >>> Tao, can you reproduce the number mentioned in the subject?? >> Sorry for the delay. >> >> But the result is the same > > Yes? > Your printk() shows kcore size is: 5301604352, and in your subject it is > 281474974617600... > > Or they happened in the same time? yes. the same box and the same linux version. A bit strange. [taoma@ocfs2-test2 ~]$ dmesg|grep "high memory" high memory ffff88013c000000, size 5301604352 [taoma@ocfs2-test2 ~]$ ll /proc/kcore -r-------- 1 root root 281474974617600 Jun 8 15:20 /proc/kcore Regards, Tao -- 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/