Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756074AbYFXBcM (ORCPT ); Mon, 23 Jun 2008 21:32:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751484AbYFXBb7 (ORCPT ); Mon, 23 Jun 2008 21:31:59 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:55847 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750924AbYFXBb6 (ORCPT ); Mon, 23 Jun 2008 21:31:58 -0400 Date: Mon, 23 Jun 2008 18:31:06 -0700 (PDT) From: Linus Torvalds To: Alexey Dobriyan cc: "Paul E. McKenney" , Oleg Nesterov , Adrian Bunk , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org Subject: Re: [Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0 In-Reply-To: <20080624005053.GA4827@martell.zuzino.mipt.ru> Message-ID: References: <20080615033001.GE26421@linux.vnet.ibm.com> <20080615162150.GA8289@martell.zuzino.mipt.ru> <20080615181710.GA17915@linux.vnet.ibm.com> <20080615232754.GD17915@linux.vnet.ibm.com> <20080616030154.GA7445@martell.zuzino.mipt.ru> <20080616033126.GF17915@linux.vnet.ibm.com> <20080616034659.GA7600@martell.zuzino.mipt.ru> <20080617034228.GA18217@linux.vnet.ibm.com> <20080624005053.GA4827@martell.zuzino.mipt.ru> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 926 Lines: 26 On Tue, 24 Jun 2008, Alexey Dobriyan wrote: > > Status update: > * bug is reproduced on another box with the very same symptoms: > SMP=y, maxcpus=1 kernel occasionally fails, SMP=n is fine. > Also Core 2 Duo, x86_64 [1] > > Race is wide -- 60 seconds of rcutorture is enough. Very odd how you can reproduce it - now on two machines - but it doesn't seem to happen for others. You've tried different compilers, you've tried different config options, what the heck is left? And it's not like Core 2 Duo is an "odd" setup. Even any timer differences should have been largely flushed out with HIGH_RES_TIMERS=y/n. Is there *anything* odd about those machines? Linus -- 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/