Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753241Ab1DIC5E (ORCPT ); Fri, 8 Apr 2011 22:57:04 -0400 Received: from mx2.parallels.com ([64.131.90.16]:34417 "EHLO mx2.parallels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751123Ab1DIC5C (ORCPT ); Fri, 8 Apr 2011 22:57:02 -0400 Message-ID: <4D9FCAF6.5030301@parallels.com> Date: Fri, 8 Apr 2011 21:56:54 -0500 From: Rob Landley User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110223 Thunderbird/3.1.8 MIME-Version: 1.0 To: Jens Axboe CC: Pete Clements , linux-kernel , "linux-ide@vger.kernel.org" , Tejun Heo Subject: Re: Commit 7eaceaccab5f40 causing boot hang. References: <201103291551.p2TFpDqZ001692@clem.clem-digital.net> <4D92C874.7040104@parallels.com> <4D931634.5030807@fusionio.com> <4D933584.5050005@parallels.com> <4D94432D.5080601@fusionio.com> <4D944544.9040705@parallels.com> <4D945247.4080404@fusionio.com> <4D945976.8000401@fusionio.com> <4D945BAD.10309@parallels.com> <4D9460F8.7080606@fusionio.com> In-Reply-To: <4D9460F8.7080606@fusionio.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-Originating-IP: [208.54.86.208] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1163 Lines: 34 On 03/31/2011 06:09 AM, Jens Axboe wrote: > On 2011-03-31 12:47, Rob Landley wrote: >> On 03/31/2011 05:37 AM, Jens Axboe wrote: >>>>>> Can you send me your .config? >>>>> >>>>> It was attached to the first message in this series, here it is again. >>>>> >>>>> I update it via "make oldconfig" and hold down return. >>>>> >>>>> I boot it via: >>>>> >>>>> qemu-system-x86_64 -m 1024 -kernel arch/x86/boot/bzImage \ >>>>> -hda ~/sid.ext3 -append "root=/dev/hda rw" >>>> >>>> Much better, I see the hang now! Now to try and diagnose... >>> >>> It seems to hard hang, looks very odd: >> >> I should have mentioned that: when it hangs, you can't page back up in >> the console display anymore. > > Data point - only seems to happen on UP. If you add -smp X to kvm, then > it boots and works just fine. It smells oddly like some sort of irq > event. > The workaround for this is to disable preemption, by the way. Rob -- 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/