From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761660AbYEAA3p (ORCPT ); Wed, 30 Apr 2008 20:29:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756345AbYEAA3g (ORCPT ); Wed, 30 Apr 2008 20:29:36 -0400 Received: from wa-out-1112.google.com ([209.85.146.181]:64738 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752364AbYEAA3e (ORCPT ); Wed, 30 Apr 2008 20:29:34 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=PLgnB2eJiE/PkziRzwTp7Ab/VeOmCfTk0zZODVVTVrRIwXPo5LgOyx1eiIzwQYRx2imKWQ0Dfrm7i3B9UiOy5oxOvWk9CMu+eGgiZ59x7qos5FsGWuXZIJVrCwUBbLWDCiOEfP9QTP1FkcFAOqLovWWRZz57WxeLYwTyWcTh+iA= Message-ID: Date: Wed, 30 Apr 2008 20:29:33 -0400 From: "Miles Lane" To: LKML , "Kristian Hoegsberg" , "Stefan Richter" Subject: 2.6.25-git16 -- BUG: unable to handle kernel NULL pointer dereference at 00000000 -- IP: [] fw_show_drv_device_ids+0xd9/0xee MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org BUG: unable to handle kernel NULL pointer dereference at 00000000 IP: [] fw_show_drv_device_ids+0xd9/0xee *pde = 00000000 Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC Modules linked in: aes_generic sbp2 snd_intel8x0 snd_ac97_codec arc4 ac97_bus snd_pcm_oss snd_mixer_oss parport_pc parport ecb crypto_blkcipher snd_pcm cryptomgr crypto_algapi snd_seq_dummy snd_seq_oss snd_seq_midi_event b43 snd_seq mac80211 snd_timer snd_seq_device cfg80211 led_class snd snd_page_alloc i2c_nforce2 i2c_core video1394 Pid: 5535, comm: head Not tainted (2.6.25-git16 #6) EIP: 0060:[] EFLAGS: 00210206 CPU: 0 EIP is at fw_show_drv_device_ids+0xd9/0xee EAX: c04f4f4c EBX: 00000018 ECX: f0bba000 EDX: f0bba000 ESI: 00000000 EDI: f7bbe268 EBP: f0b17f3c ESP: f0b17f2c DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 Process head (pid: 5535, ti=f0b17000 task=f4805e80 task.ti=f0b17000) Stack: f0bba000 f0bba000 f7bfb2d0 f7bbe268 f0b17f4c c028895f f5220e70 c04ef508 f0b17f74 c01a62bb 00002000 bfd261a7 f5220e84 c04ef508 f7bfb2d0 00002000 f45aee00 bfd261a7 f0b17f90 c0172807 f0b17f9c c01a622a f45aee00 fffffff7 Call Trace: [] ? drv_attr_show+0x1f/0x23 [] ? sysfs_read_file+0x91/0xee [] ? vfs_read+0x78/0xa8 [] ? sysfs_read_file+0x0/0xee [] ? sys_read+0x3b/0x5d [] ? sysenter_past_esp+0x78/0xd1 ======================= Code: 01 b8 3a e5 48 c0 0f 44 c2 50 68 f5 ed 49 c0 51 e8 a8 5c f3 ff 8b 4d f0 01 c6 83 c4 10 01 f1 85 ff 74 05 c6 01 0a 46 41 83 c3 18 <8b> 43 e8 85 c0 0f 85 37 ff ff ff 8d 65 f4 89 f0 5b 5e 5f c9 c3 This issue seems to have to do with the following problem: ohci1394: fw-host0: SelfID received outside of bus reset sequence IEEE 1394 device has ROM CRC error IEEE 1394 device has ROM CRC error Program usplash tried to access /dev/mem between 0->8000000. ieee1394: Node added: ID:BUS[0-00:1023] GUID[00d0f54000000173] ieee1394: Host added: ID:BUS[0-01:1023] GUID[00e018000027d06c] IEEE 1394 device has ROM CRC error IEEE 1394 device has ROM CRC error IEEE 1394 device has ROM CRC error IEEE 1394 device has ROM CRC error IEEE 1394 device has ROM CRC error This is an OrangeMicro iBot Firewire webcam. It works fine under Windows and has also worked for me under Linux in the past (although not as well). I can trigger this OOPS by running: # cat /sys/bus/ieee1394/drivers/raw1394/device_ids Segmentation fault 00:0d.0 FireWire (IEEE 1394): nVidia Corporation nForce2 FireWire (IEEE 1394) Controller (rev a3) (prog-if 10 [OHCI]) Subsystem: ASUSTeK Computer Inc. Unknown device 809a Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR-