From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756659AbYIDUvY (ORCPT ); Thu, 4 Sep 2008 16:51:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754157AbYIDUvP (ORCPT ); Thu, 4 Sep 2008 16:51:15 -0400 Received: from wa-out-1112.google.com ([209.85.146.178]:15950 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754106AbYIDUvO (ORCPT ); Thu, 4 Sep 2008 16:51:14 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=BsnyRPixMEwGhoXaKk52i1iJL+196dnc0xc/gUII/lSoH5ucM/mKKGGYGlGYJ0PdgP 1FafOcOndfkLZ1iAPLaAU/lFuFCKUc5i6UJYwfzCTXHXvFQtW5DxHp8jgABdNqKFS54B Cach7NaOTYCLvXbA2XkfqJ85qvv217g8izEnE= Message-ID: <68676e00809041351x5949e4f3xdc97737a56bfd4cd@mail.gmail.com> Date: Thu, 4 Sep 2008 22:51:14 +0200 From: "Luca Tettamanti" To: "Peter Zijlstra" Subject: Re: [2.6.27] early exception - lockdep related? Cc: linux-kernel@vger.kernel.org, mingo@redhat.com In-Reply-To: <1220538332.8609.233.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080902210646.GA10925@dreamland.darkstar.lan> <1220424721.8609.74.camel@twins> <68676e00809030128o45820023n6f270847e14af2a3@mail.gmail.com> <68676e00809031221v6486d4cdmc1ac7487acd01190@mail.gmail.com> <1220538332.8609.233.camel@twins> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Luca