From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755958AbYFGVX7 (ORCPT ); Sat, 7 Jun 2008 17:23:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751995AbYFGVXt (ORCPT ); Sat, 7 Jun 2008 17:23:49 -0400 Received: from e28smtp04.in.ibm.com ([59.145.155.4]:56537 "EHLO e28smtp04.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751811AbYFGVXs (ORCPT ); Sat, 7 Jun 2008 17:23:48 -0400 Message-ID: <484AFC5A.3070006@linux.vnet.ibm.com> Date: Sun, 08 Jun 2008 02:53:38 +0530 From: Balbir Singh Reply-To: balbir@linux.vnet.ibm.com Organization: IBM User-Agent: Thunderbird 2.0.0.14 (X11/20080501) MIME-Version: 1.0 To: Andrew Morton CC: linux kernel mailing list Subject: [mmotm] __build_sched_domains panic 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 Hi, Andrew, I have an x86_64 system with 4 CPUs and 4GB memory and I see the following panic, when I boot with fake NUMA nodes. I am still investigating the problem. I was trying to use this setup to verify KAMEZAWA's fix for the memcgroup page migration problem. BUG: unable to handle kernel paging request at 0000007800000020 IP: [] ____cache_alloc_node+0x62/0x133 PGD 0 Oops: 0000 [1] SMP DEBUG_PAGEALLOC last sysfs file: CPU 0 Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.26-rc5-mm1 #1 RIP: 0010:[] [] ____cache_alloc_node+0x62/0x133 RSP: 0000:ffff8100bfdebd30 EFLAGS: 00010007 RAX: ffff81007fdea040 RBX: 0000007800000000 RCX: ffff81007fdea730 RDX: 0000000000000000 RSI: ffff81003fc5d858 RDI: ffff81007fdea040 RBP: ffff8100bfdebd60 R08: 0000000000000004 R09: ffff81003fc5d858 R10: ffff8100000be400 R11: ffff8100bfdeb8b0 R12: ffff81003fc5d800 R13: ffff81003fc40400 R14: 000000000000000b R15: ffff81003fc5d840 FS: 0000000000000000(0000) GS:ffffffff807d9a00(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000007800000020 CR3: 0000000000201000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process swapper (pid: 1, threadinfo ffff8100bfdea000, task ffff81007fdea040) Stack: 000000d00000003f ffff8100bfe19780 000000000000000b 0000000000000246 ffff81003fc40400 00000000000000d0 ffff8100bfdebda0 ffffffff8029d813 ffff810081c13ca0 ffff8100bfe19780 ffff8100bfdebdf8 0000000000000004 Call Trace: [] kmem_cache_alloc_node+0xc6/0x10e [] __build_sched_domains+0x51d/0x7bd [] ? trace_hardirqs_on+0xd/0xf [] arch_init_sched_domains+0x63/0x70 [] sched_init_smp+0x4c/0x107 [] kernel_init+0xf9/0x2be [] ? trace_hardirqs_on_caller+0xf9/0x124 [] ? trace_hardirqs_on+0xd/0xf [] ? _spin_unlock_irq+0x2b/0x30 [] ? trace_hardirqs_on_thunk+0x3a/0x3f [] ? trace_hardirqs_on_caller+0xf9/0x124 [] child_rip+0xa/0x12 [] ? restore_args+0x0/0x30 [] ? kernel_init+0x0/0x2be [] ? child_rip+0x0/0x12 Code: f4 b9 30 00 49 8b 1c 24 4c 39 e3 75 1e 48 8b 53 20 48 8d 43 20 c7 83 90 00 00 00 01 00 00 00 48 39 c2 0f 84 91 00 00 00 48 89 d3 <8b> 43 20 41 3b 85 18 01 00 00 75 04 0f 0b eb fe 44 89 f2 4c 89 RIP [] ____cache_alloc_node+0x62/0x133 RSP CR2: 0000007800000020 -- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL