From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758618AbYDYEu6 (ORCPT ); Fri, 25 Apr 2008 00:50:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753355AbYDYEur (ORCPT ); Fri, 25 Apr 2008 00:50:47 -0400 Received: from ns.store20.com ([212.7.7.16]:51609 "EHLO store20.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753093AbYDYEuq (ORCPT ); Fri, 25 Apr 2008 00:50:46 -0400 X-Greylist: delayed 442 seconds by postgrey-1.27 at vger.kernel.org; Fri, 25 Apr 2008 00:50:46 EDT Subject: [REGRESSION] x86: support for new UV apic From: Priit Laes To: linux-kernel , Jack Steiner Cc: Ingo Molnar Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Fri, 25 Apr 2008 07:43:20 +0300 Message-Id: <1209098600.3707.13.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.22.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hey, I am getting two following warnings (probable one per each CPU core) using the latest Linus's git: WARNING: at arch/x86/kernel/genapic_64.c:86 read_apic_id+0x30/0x62() Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.25-03563-gf7288b1 #20 Call Trace: [] warn_on_slowpath+0x51/0x63 [] sys_ioctl+0x2d/0x5d [] _spin_lock+0xe/0x24 [] task_rq_lock+0x3d/0x73 [] set_cpu_sibling_map+0x336/0x350 [] read_apic_id+0x30/0x62 [] verify_local_APIC+0x90/0x138 [] native_smp_prepare_cpus+0x1f9/0x305 [] kernel_init+0x59/0x2d9 [] _spin_unlock_irq+0x11/0x2b [] child_rip+0xa/0x12 [] kernel_init+0x0/0x2d9 [] child_rip+0x0/0x12 ---[ end trace ca143223eefdc828 ]--- Few hours of bisecting gave me following commit as a suspect ac23d4ee3f84de33c16ed7e68f9adee2386e74fb is first bad commit commit ac23d4ee3f84de33c16ed7e68f9adee2386e74fb Author: Jack Steiner Date: Fri Mar 28 14:12:16 2008 -0500 x86: support for new UV apic