Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933809Ab1CXTD0 (ORCPT ); Thu, 24 Mar 2011 15:03:26 -0400 Received: from mail-yw0-f46.google.com ([209.85.213.46]:53992 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933056Ab1CXTDZ convert rfc822-to-8bit (ORCPT ); Thu, 24 Mar 2011 15:03:25 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=HA377Ou3gRbu78VTH6czVoCyVRg3peu+UKOBliRHdiOLNJdfuN7hA90kn9qm3XU5Fa ZBN1i8Jb7t2xVggqj92tdaInAt85CdefCC1TVVBfTK6QQfcM/hAt+PUcdV69vbZwV4mk Jtwkhl+dA868V2vMmtd2LnJ3hLjIRuW8SsDsE= MIME-Version: 1.0 In-Reply-To: <20110324185903.GA30510@elte.hu> References: <20110324172653.GA28507@elte.hu> <1300990853.3747.189.camel@edumazet-laptop> <20110324185903.GA30510@elte.hu> Date: Thu, 24 Mar 2011 21:03:24 +0200 X-Google-Sender-Auth: Oq78uq5E69nngcXRc5B0sTcMHMg Message-ID: Subject: Re: [GIT PULL] SLAB changes for v2.6.39-rc1 From: Pekka Enberg To: Ingo Molnar Cc: Christoph Lameter , Eric Dumazet , torvalds@linux-foundation.org, akpm@linux-foundation.org, tj@kernel.org, npiggin@kernel.dk, rientjes@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1518 Lines: 45 On Thu, Mar 24, 2011 at 8:59 PM, Ingo Molnar wrote: > > * Pekka Enberg wrote: > >> On Thu, Mar 24, 2011 at 8:47 PM, Christoph Lameter wrote: >> > >> > On Thu, 24 Mar 2011, Eric Dumazet wrote: >> > >> >> > this_cpu_cmpxchg16b_emu: >> >> > ? ? ? ? pushf >> >> > ? ? ? ? cli >> >> > >> >> > ? ? ? ? cmpq %gs:(%rsi), %rax >> > >> >> Random guess >> >> >> >> Masking interrupts, and accessing vmalloc() based memory for the first >> >> time ? >> > >> > Hmmm.. Could be. KVM would not really disable interrupts so this may >> > explain that the test case works here. >> > >> > Simple fix would be to do a load before the cli I guess. >> >> Btw, I tried Ingo's .config and it doesn't boot here so it's somehow >> .config related. > > did you get a similar early crash as i? I'd not expect my .config to have all > the drivers that are needed on your box. It hanged here which is pretty much expected on this box if kmem_cache_init() oopses. I'm now trying to see if I'm able to find the config option that breaks things. CONFIG_PREEMPT_NONE is a suspect: penberg@tiger:~/linux$ grep PREEMPT ../config-ingo # CONFIG_PREEMPT_RCU is not set CONFIG_PREEMPT_NONE=y # CONFIG_PREEMPT_VOLUNTARY is not set # CONFIG_PREEMPT is not set -- 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/