From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757193AbaJIPft (ORCPT ); Thu, 9 Oct 2014 11:35:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:26588 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751975AbaJIPfk (ORCPT ); Thu, 9 Oct 2014 11:35:40 -0400 Message-ID: <5436AB4A.1080900@redhat.com> Date: Thu, 09 Oct 2014 11:35:38 -0400 From: Prarit Bhargava User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20131028 Thunderbird/17.0.10 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org CC: x86@kernel.org Subject: Lockdep warning with init_espfix_ap() Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Non-fatal warning seen with latest kernel tree during kernel boot. WARNING: CPU: 64 PID: 0 at kernel/locking/lockdep.c:2744 lockdep_trace_alloc+0xdd/0xe0() DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags)) Modules linked in: CPU: 64 PID: 0 Comm: swapper/64 Not tainted 3.17.0+ #10 Hardware name: Intel Corporation BRICKLAND/BRICKLAND, BIOS BIVTSDP1.86B.0049.R00.1403081207 03/08/2014 0000000000000000 d27b9ea0e3821f35 ffff88084edc3ce0 ffffffff8171cbd8 ffff88084edc3d28 ffff88084edc3d18 ffffffff8108424d 0000000000000046 0000000000000000 00000000000000d0 0000000000000002 0000000000000000 Call Trace: [] dump_stack+0x4d/0x66 [] warn_slowpath_common+0x7d/0xa0 [] warn_slowpath_fmt+0x5c/0x80 [] lockdep_trace_alloc+0xdd/0xe0 [] __alloc_pages_nodemask+0x9f/0x4b0 [] ? native_sched_clock+0x35/0xa0 [] ? sched_clock+0x9/0x10 [] alloc_page_interleave+0x3a/0x90 [] alloc_pages_current+0x17d/0x1f0 [] ? __get_free_pages+0x14/0x50 [] __get_free_pages+0x14/0x50 [] init_espfix_ap+0x17d/0x320 [] start_secondary+0x19e/0x350 ---[ end trace 2b62d796aa7ae001 ]--- Debugging ... but sorta hoping someone else may have already seen it ;) P.