Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755341AbaFLBKi (ORCPT ); Wed, 11 Jun 2014 21:10:38 -0400 Received: from out01.mta.xmission.com ([166.70.13.231]:43931 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754332AbaFLBKg (ORCPT ); Wed, 11 Jun 2014 21:10:36 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: Rafael Tinoco Cc: Paul McKenney , Dave Chiluk , linux-kernel@vger.kernel.org, davem@davemloft.net, Christopher Arges , Jay Vosburgh References: <20140611133919.GZ4581@linux.vnet.ibm.com> <539879B8.4010204@canonical.com> <20140611161857.GC4581@linux.vnet.ibm.com> <53989F7B.6000004@canonical.com> <874mzr41kf.fsf@x220.int.ebiederm.org> <20140611225228.GO4581@linux.vnet.ibm.com> <87ioo7vy5s.fsf@x220.int.ebiederm.org> <20140611234902.GQ4581@linux.vnet.ibm.com> <87bntzt24g.fsf@x220.int.ebiederm.org> Date: Wed, 11 Jun 2014 18:09:27 -0700 In-Reply-To: (Rafael Tinoco's message of "Wed, 11 Jun 2014 21:25:52 -0300") Message-ID: <874mzrszlk.fsf@x220.int.ebiederm.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-AID: U2FsdGVkX1/11W0kVknqiSrKtvkkhIg3BkXmg4kB5v0= X-SA-Exim-Connect-IP: 98.234.51.111 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.7 XMSubLong Long Subject * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * 0.8 BAYES_50 BODY: Bayes spam probability is 40 to 60% * [score: 0.4766] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa03 1397; Body=1 Fuz1=1 Fuz2=1] X-Spam-DCC: XMission; sa03 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;Rafael Tinoco X-Spam-Relay-Country: Subject: Re: Possible netns creation and execution performance/scalability regression since v3.8 due to rcu callbacks being offloaded to multiple cpus X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Wed, 14 Nov 2012 13:58:17 -0700) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Rafael Tinoco writes: > I'm getting a kernel panic with your patch: > > -- panic > -- mount_block_root > -- mount_root > -- prepare_namespace > -- kernel_init_freeable > > It is giving me an unknown block device for the same config file i > used on other builds. Since my test is running on a kvm guest under a > ramdisk, i'm still checking if there are any differences between this > build and other ones but I think there aren't. > > Any chances that "prepare_namespace" might be breaking mount_root ? My patch boots for me.... Eric -- 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/