Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756076Ab0F2PeS (ORCPT ); Tue, 29 Jun 2010 11:34:18 -0400 Received: from terminus.zytor.com ([198.137.202.10]:39186 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753912Ab0F2PeQ (ORCPT ); Tue, 29 Jun 2010 11:34:16 -0400 Message-ID: <4C2A125B.4050504@zytor.com> Date: Tue, 29 Jun 2010 08:33:47 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.10) Gecko/20100621 Fedora/3.0.5-1.fc13 Thunderbird/3.0.5 MIME-Version: 1.0 To: Ingo Molnar CC: mingo@redhat.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, hpa@linux.intel.com, linux-tip-commits@vger.kernel.org Subject: Re: [tip:x86/alternatives] x86, alternatives: Use 16-bit numbers for cpufeature index References: <20100629091535.GA28302@elte.hu> In-Reply-To: <20100629091535.GA28302@elte.hu> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1686 Lines: 46 On 06/29/2010 02:15 AM, Ingo Molnar wrote: > > Hm, this patch is causing trouble in -tip testing again - it's triggering a > colorful boot crash: > > [ 2.220002] calling inet_init+0x0/0x23d @ 1 > [ 2.223343] NET: Registered protocol family 2 > [ 2.226727] IP route cache hash table entries: 32768 (order: 6, 262144 bytes) > [ 2.233492] ------------[ cut here ]------------ > [ 2.236671] WARNING: at mm/vmalloc.c:107 vmap_page_range_noflush+0x309/0x3a0() > [ 2.240001] Modules linked in: > ... > [ 3.090002] Kernel panic - not syncing: Failed to allocate TCP established hash table > > So i've zapped them again. We really need to get to the bottom of this. Config > and bootlog attached. > > The crash looks very weird - and it's consistent with possible effects of some > sort of code patching failure/mismatch. > > It goes away if i revert these two: > > a3d2d12: x86, alternatives: correct obsolete use of "u8" in static_cpu_has() > 5dc71d4: x86, alternatives: Use 16-bit numbers for cpufeature index > > I reproduced the crash twice before testing the revert. > Hi Ingo, I'm pretty sure that these are related to gcc and/or binutils differences, so it would be nice to get the .o and .s files of the failing locations (in this case mm/vmalloc.[so]) *as built on the failing machines*. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/