From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754553AbZEXMXt (ORCPT ); Sun, 24 May 2009 08:23:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753515AbZEXMXk (ORCPT ); Sun, 24 May 2009 08:23:40 -0400 Received: from mx03.syneticon.net ([78.111.66.105]:38300 "EHLO mx03.syneticon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753021AbZEXMXj (ORCPT ); Sun, 24 May 2009 08:23:39 -0400 Message-ID: <4A193C51.7090607@wpkg.org> Date: Sun, 24 May 2009 14:23:45 +0200 From: Tomasz Chmielewski User-Agent: Thunderbird 2.0.0.21 (X11/20090319) MIME-Version: 1.0 To: LKML , "kvm@vger.kernel.org" Subject: 2.6.29.1 BUG: unable to handle kernel NULL pointer dereference at (null) -> Oops Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This system is running as a kvm-85 guest. When this happened, IO and CPU load were bigger than usually. The system is still running and I have some sysstat (sar) statistics for it, if anyone has some ideas about it. BUG: unable to handle kernel NULL pointer dereference at (null) IP: [] page_referenced+0xab/0x140 *pdpt = 00000000005ed001 *pde = 0000000000000000 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/pci0000:00/0000:00:03.0/net/eth1/ifindex Modules linked in: e1000 ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 binfmt_misc loop dm_multipath scsi_dh dm_mod joydev usbhid hid ppdev af_packet virtio_balloon pcspkr evdev sg parport_pc rtc_cmos parport thermal button i2c_piix4 i2c_core uhci_hcd processor usbcore sd_mod iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi scsi_mod ext3 jbd virtio_net virtio_pci virtio_ring virtio crc_t10dif crc32c libcrc32c Pid: 179, comm: kswapd0 Not tainted (2.6.29.1-server-4mnb #1) EIP: 0060:[] EFLAGS: 00010202 CPU: 0 EIP is at page_referenced+0xab/0x140 EAX: ed045570 EBX: ffffffc8 ECX: 00000000 EDX: 00000000 ESI: ed045571 EDI: c23d8680 EBP: f5879d4c ESP: f5879d30 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kswapd0 (pid: 179, ti=f5878000 task=f5b10c60 task.ti=f5878000) Stack: 00000000 ed045570 f5879d4c 00000001 c23d8680 c23d8698 f5879f70 f5879e10 c019f08d 003c09dc f5879db0 f5879eb4 f5879dfc f5879dd4 00000000 f5879f70 00879e10 00000006 00000017 c0514b40 00000001 00000000 00000001 00000001 Call Trace: [] ? shrink_page_list+0x17d/0x730 [] ? shrink_list+0x238/0x5e0 [] ? d_free+0x2c/0x50 [] ? __shrink_dcache_sb+0x2a3/0x2d0 [] ? shrink_zone+0x217/0x330 [] ? kswapd+0x5cd/0x620 [] ? isolate_pages_global+0x0/0x200 [] ? autoremove_wake_function+0x0/0x50 [] ? kswapd+0x0/0x620 [] ? kthread+0x3c/0x70 [] ? kthread+0x0/0x70 [] ? kernel_thread_helper+0x7/0x10 Code: 00 00 00 8d 46 ff 89 45 e8 e8 62 a5 21 00 8b 45 e8 85 c0 0f 84 97 00 00 00 8b 47 08 83 c0 01 89 45 f0 8b 45 e8 8b 50 04 8d 5a c8 <8b> 43 38 0f 18 00 90 83 c6 03 89 75 ec 31 f6 39 55 ec 75 1b eb EIP: [] page_referenced+0xab/0x140 SS:ESP 0068:f5879d30 ---[ end trace 03bc6e65c375750f ]--- -- Tomasz Chmielewski http://wpkg.org