Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752397AbYGXDiz (ORCPT ); Wed, 23 Jul 2008 23:38:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751221AbYGXDiq (ORCPT ); Wed, 23 Jul 2008 23:38:46 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:45196 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751213AbYGXDip (ORCPT ); Wed, 23 Jul 2008 23:38:45 -0400 Date: Wed, 23 Jul 2008 20:38:36 -0700 From: Andrew Morton To: David Miller Cc: sparclinux@vger.kernel.org, bugme-daemon@bugzilla.kernel.org, lomp0101@gmx.net, linux-kernel@vger.kernel.org, Johannes Weiner Subject: Re: [Bug 11046] New: Kernel bug in mm/bootmem.c on Sparc machines Message-Id: <20080723203836.e0c14568.akpm@linux-foundation.org> In-Reply-To: <20080723.202533.114601491.davem@davemloft.net> References: <20080706132049.4019e09f.akpm@linux-foundation.org> <20080723.202533.114601491.davem@davemloft.net> X-Mailer: Sylpheed 2.4.8 (GTK+ 2.12.5; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1785 Lines: 41 On Wed, 23 Jul 2008 20:25:33 -0700 (PDT) David Miller wrote: > From: Andrew Morton > Date: Sun, 6 Jul 2008 13:20:49 -0700 > > > On Sun, 6 Jul 2008 13:02:28 -0700 (PDT) bugme-daemon@bugzilla.kernel.org wrote: > > > > > http://bugzilla.kernel.org/show_bug.cgi?id=11046 > ... > > > Here is the BUG: > > > > > > [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 4.11.5 2003/11/12 10:40' > > > [ 0.000000] PROMLIB: Root node compatible: > > > [ 0.000000] Linux version 2.6.25.10 (root@sparc1) (gcc version 4.1.2 > > > 20061115 (prerelease) (Debian 4.1.1-21)) #5 SMP Sun Jul 6 21:05:42 CEST 2008 > > > [ 0.000000] console [earlyprom0] enabled > > > [ 0.000000] ARCH: SUN4U > > > [ 0.000000] Ethernet address: 00:03:ba:7a:f3:d6 > > > [ 0.000000] Kernel: Using 2 locked TLB entries for main kernel image. > > > [ 0.000000] Remapping the kernel... done. > > > [ 0.000000] kernel BUG at mm/bootmem.c:125! > > This can only happen if you attach a zero-sized initrd to the kernel. > > I see platforms like x86 sometimes have explicit checks for a zero > size to guard reserve_bootmem() and similar calls, but if that's what > callers are all going to do doesn't it make better sense for > reserve_bootmem_core() to just return instead of BUG on a zero size > argument? Sounds logical. Johannes just rewrote the bootmem code, but from a quick read it appears that this behaviour has been retained. So if we're going to change it in 2.6.26, we'll need a separate patch. -- 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/