From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S939092AbXGSOOv (ORCPT ); Thu, 19 Jul 2007 10:14:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965221AbXGSOIj (ORCPT ); Thu, 19 Jul 2007 10:08:39 -0400 Received: from nz-out-0506.google.com ([64.233.162.236]:31814 "EHLO nz-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965215AbXGSOIi (ORCPT ); Thu, 19 Jul 2007 10:08:38 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=gqVVqKvz5t0Anauo0MnwbS0zjGs5fMmzdpSGoHRt37Gkfk1U1l1PjaDJZjJmr3/51WWiLAySuDETneEfdT8Z/8nQJIdkUrMuJMTKBbK0pva5mtRZE3itu+wRcUuUFTTXzafvwXrhzeq1ValFrnhMLPxisdReWmqDv2c1ZpViMWQ= Message-ID: <84144f020707190708p1c4d63cnbb0397a602c3527d@mail.gmail.com> Date: Thu, 19 Jul 2007 17:08:34 +0300 From: "Pekka Enberg" To: "Andi Kleen" Subject: Re: kmalloc zero size changes break i386 Cc: "Christoph Lameter" , torvalds@osdl.org, linux-kernel@vger.kernel.org In-Reply-To: <200707191201.35777.ak@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200707191201.35777.ak@suse.de> X-Google-Sender-Auth: 8174b5c92eafac01 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Andi, On 7/19/07, Andi Kleen wrote: > qemu testing and booting test machines with i386 kernels wasn't very successfull > with recent git kernels. I got either BUGs because of failing sysfs initialization > or oopses in kmalloc, but no user land. > > I bisected it down to this commit. > > To reproduce: try to boot a 386 defconfig kernel, compiled with gcc 4.1, in qemu [snip] > 6cb8f91320d3e720351c21741da795fed580b21b is first bad commit > commit 6cb8f91320d3e720351c21741da795fed580b21b > Author: Christoph Lameter > Date: Tue Jul 17 04:03:22 2007 -0700 > > Slab allocators: consistent ZERO_SIZE_PTR support and NULL result semantics I have i386 defconfig kernel + qemu + busybox userland image + GCC 4.1.2 booting ok here. Did you manage to capture the oops? Is the userland image available somewhere? Pekka