From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753784AbYIETR0 (ORCPT ); Fri, 5 Sep 2008 15:17:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751345AbYIETRQ (ORCPT ); Fri, 5 Sep 2008 15:17:16 -0400 Received: from wa-out-1112.google.com ([209.85.146.179]:22954 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750849AbYIETRP (ORCPT ); Fri, 5 Sep 2008 15:17:15 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:mime-version:content-type :content-transfer-encoding:content-disposition; b=m8r/nPGSP2hx5PC8L84mI77vGcKlBWztuQn1rgMl0lbz5tVW1XEPS+ddR8ztJ/cMgl B/9zM/glYpb/5++WJKIB9TJ5sYcVspNIuGnlbmJms345M4sMBVR5p+SY+6RTntB4uLAV fyO8mLwfL6JwMPv4PvlixB+ocVdiPgCjsIok8= Message-ID: <68676e00809051217h3da02a6bld4412b4a2ee3b728@mail.gmail.com> Date: Fri, 5 Sep 2008 21:17:13 +0200 From: "Luca Tettamanti" To: "Peter Zijlstra" Subject: Re: [2.6.27] overlapping early reservations [was: early exception - lockdep related?] Cc: linux-kernel@vger.kernel.org, mingo@redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 4, 2008 at 10:51 PM, Luca Tettamanti wrote: > On Thu, Sep 4, 2008 at 4:25 PM, Peter Zijlstra wrote: >> Sadly your config just boots, albeit not to userspace due to missing >> drivers. > > Yes, I managed to boot it with qemu... I tried kgdb - without luck - > kernel dies too early. > I also managed to get a stack trace :D > > http://img151.imageshack.us/my.php?image=tracedm1.jpg > > It seems that lockdep is an innocent bystander... the kernel died with > panic() in __reserve_early, and then took another exception while > printing the panic (I guess). > Will add further debug stuff to see wtf is going on. Hum, kernel says: http://img177.imageshack.us/my.php?image=overlappingus2.jpg Overlapping early reservations b98000-eff266 RAMDISK to 200000-d09cf7 TEXT DATA BSS It would appear that the initramfs is overlapping the kernel itself, is the boot loader (LILO) doing something stupid? Luca