From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752526AbYJ0PAU (ORCPT ); Mon, 27 Oct 2008 11:00:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751201AbYJ0PAG (ORCPT ); Mon, 27 Oct 2008 11:00:06 -0400 Received: from smtp-vbr13.xs4all.nl ([194.109.24.33]:4313 "EHLO smtp-vbr13.xs4all.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751119AbYJ0PAF (ORCPT ); Mon, 27 Oct 2008 11:00:05 -0400 Date: Mon, 27 Oct 2008 16:00:02 +0100 From: Folkert van Heusden To: linux-kernel@vger.kernel.org Subject: [2.6.26] OOPS in __linkwatch_run_queue (unable to handle kernel NULL pointer dereference at 00000235) Message-ID: <20081027150001.GQ8318@vanheusden.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Organization: www.unixexpert.nl X-Chameleon-Return-To: folkert@vanheusden.com X-Xfmail-Return-To: folkert@vanheusden.com X-Phonenumber: +31-6-41278122 X-URL: http://www.vanheusden.com/ X-PGP-KeyID: 1F28D8AE X-GPG-fingerprint: AC89 09CE 41F2 00B4 FCF2 B174 3019 0E8C 1F28 D8AE X-Key: http://pgp.surfnet.nl:11371/pks/lookup?op=get&search=0x1F28D8AE Reply-By: Sat Oct 25 11:44:16 CEST 2008 X-Message-Flag: www.vanheusden.com User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, While running my http://vanheusden.com/pyk/ script (which randomly inserts and removes modules) I triggered the folllowing oops in a 2.6.26 kernel on a pre-ht pentium 4 (hp pavillion laptop type zv5231ea): [ 1037.480097] BUG: unable to handle kernel NULL pointer dereference at 00000235 [ 1037.480188] IP: [] __linkwatch_run_queue+0x6d/0x15a [ 1037.480256] *pde = 00000000 [ 1037.480315] Oops: 0000 [#1] SMP [ 1037.480393] Modules linked in: pcspkr(+) dm_snapshot joydev cdrom cpufreq_conservative snd_atiixp_modem(+) ohci_hcd(+) serio_raw wmi loop i2c_piix4 button ac sbp2 parport_pc lp psmouse output snd_seq_device pci_hotplug arc4 ecb crypto_blkcipher b43legacy input_polldev led_class rng_core rfkill_input rfkill cpufreq_stats ssb pcmcia firmware_class mac80211 parport cpufreq_ondemand dm_mirror i2c_core freq_table cfg80211 dm_log snd_ac97_codec ac97_bus ieee1394 scsi_mod snd_pcm snd_timer yenta_socket rsrc_nonstatic snd_page_alloc radeon drm rfcomm l2cap bluetooth ipv6 snd soundcore ati_agp agpgart evdev ext3 jbd mbcache dm_mod ide_disk 8139cp atiixp 8139too mii pcmcia_core ide_pci_generic ide_core usbcore processor thermal_sys [last unloaded: b44] [ 1037.482294] [ 1037.482328] Pid: 6, comm: events/0 Not tainted (2.6.26-1-686 #1) [ 1037.482365] EIP: 0060:[] EFLAGS: 00010246 CPU: 0 [ 1037.482403] EIP is at __linkwatch_run_queue+0x6d/0x15a [ 1037.482439] EAX: f744c000 EBX: 00000001 ECX: c03632a4 EDX: 01553000 [ 1037.482476] ESI: 00000003 EDI: 00000000 EBP: 00000001 ESP: f744df94 [ 1037.482536] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [ 1037.482572] Process events/0 (pid: 6, ti=f744c000 task=f743e460 task.ti=f744c000) [ 1037.482609] Stack: f7414600 c03632a0 c0261165 00000000 c0261182 c012edee f7414600 c012f4c9 [ 1037.482855] f741460c c012f57c 00000000 f743e460 c013177c f744dfc8 f744dfc8 f7414600 [ 1037.483101] 00000000 c01316bb c0131683 00000000 c01044f3 f7441ef8 00000000 00000000 [ 1037.483346] Call Trace: [ 1037.483412] [] linkwatch_event+0x0/0x22 [ 1037.483474] [] linkwatch_event+0x1d/0x22 [ 1037.483534] [] run_workqueue+0x74/0xf2 [ 1037.483596] [] worker_thread+0x0/0xbd [ 1037.483656] [] worker_thread+0xb3/0xbd [ 1037.483718] [] autoremove_wake_function+0x0/0x2d [ 1037.483785] [] kthread+0x38/0x5d [ 1037.483842] [] kthread+0x0/0x5d [ 1037.483901] [] kernel_thread_helper+0x7/0x10 [ 1037.483974] ======================= [ 1037.484007] Code: 80 05 00 8b 1d 9c b5 41 c0 c7 05 9c b5 41 c0 00 00 00 00 90 fe 05 90 b5 41 c0 fb 0f 1f 84 00 00 00 00 00 90 e9 ce 00 00 00 85 ff <8b> ab 34 02 00 00 74 17 89 d8 e8 7d fe ff ff 85 c0 75 0c 89 d8 [ 1037.484013] EIP: [] __linkwatch_run_queue+0x6d/0x15a SS:ESP 0068:f744df94 [ 1037.485642] ---[ end trace 69e935fd5d0e15c9 ]--- Folkert van Heusden -- Multi tail barnamaj mowahib li mora9abat attasjilat wa nataij awamir al 7asoub. damj, talwin, mora9abat attarchi7 wa ila akhirih. http://www.vanheusden.com/multitail/ ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com