System crashes when cdemu is present

[leo]

Binary package hint: xorg

After upgrading from 10.10 and having the package cdemu installed, the system crashes when starting X. Going into safe mode and removing cdemu through sudo apt-get remove cdemu-daemon resolves the problem.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 270.41.06 Mon Apr 18 14:53:56 PDT 2011
 GCC version: gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
Date: Fri Apr 22 05:06:18 2011
DistUpgraded: Log time: 2011-04-22 02:14:24.682759
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 nVidia Corporation G96 [GeForce 9600M GT] [10de:0649] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: COMPAL Electronics Inc Device [14c0:0031]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
JockeyStatus:
 xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled, Not in use)
 xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, Not in use)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=f45b91eb-1571-4905-a544-913e59efa3b7 ro ipv6.disable=1 quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: Upgraded to natty on 2011-04-22 (0 days ago)
dmi.bios.date: 04/03/2009
dmi.bios.vendor: COMPAL
dmi.bios.version: 1.13
dmi.board.name: JHL90
dmi.board.vendor: COMPAL
dmi.board.version: REFERENCE
dmi.chassis.type: 1
dmi.chassis.vendor: COMPAL
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnCOMPAL:bvr1.13:bd04/03/2009:svnCOMPAL:pn:pvr:rvnCOMPAL:rnJHL90:rvrREFERENCE:cvnCOMPAL:ct1:cvrN/A:
dmi.sys.vendor: COMPAL
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[Harald Eiermann (harald-eiermann)]

Same problem here. Alas, it was sufficient to prevent vhba.ko kernel module from loading.
I got a kernel oops as follows:

Apr 29 22:24:09 vera kernel: [ 306.460129] BUG: unable to handle kernel paging request at 0000000000040004
Apr 29 22:24:09 vera kernel: [ 306.460135] IP: [<ffffffffa00e6bfe>] vhba_ctl_read+0x1fe/0x2e0 [vhba]
Apr 29 22:24:09 vera kernel: [ 306.460143] PGD 10ec04067 PUD 10ed97067 PMD 0
Apr 29 22:24:09 vera kernel: [ 306.460146] Oops: 0000 [#1] SMP
Apr 29 22:24:09 vera kernel: [ 306.460149] last sysfs file: /sys/devices/pci0000:00/0000:00:1b.0/sound/card0/uevent
Apr 29 22:24:09 vera kernel: [ 306.460151] CPU 1
Apr 29 22:24:09 vera kernel: [ 306.460152] Modules linked in: vboxnetadp vboxnetflt vboxdrv snd_hrtimer binfmt_misc kvm_intel kvm parport_pc ppdev lp parport dm_crypt vesafb usblp snd_hda_codec_hdmi snd_hda_codec_realtek ir_lirc_codec snd_hda_intel snd_hda_codec ir_sony_decoder ir_jvc_decoder snd_hwdep rc_rc6_mce ir_rc6_decoder ir_rc5_decoder snd_pcm ir_nec_decoder mceusb rc_core snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq fglrx(P) saa7164 dvb_core snd_timer snd_seq_device v4l2_common asus_atk0110 videodev v4l2_compat_ioctl32 tveeprom snd vhba lirc_dev soundcore snd_page_alloc radeonfb fb_ddc i2c_algo_bit dm_raid45 xor usbhid usb_storage pata_marvell hid uas atl1e ahci floppy libahci ramzswap xvmalloc
Apr 29 22:24:09 vera kernel: [ 306.460188]
Apr 29 22:24:09 vera kernel: [ 306.460191] Pid: 2596, comm: cdemud Tainted: P 2.6.38-8-generic #42-Ubuntu System manufacturer P5Q/P5Q
Apr 29 22:24:09 vera kernel: [ 306.460195] RIP: 0010:[<ffffffffa00e6bfe>] [<ffffffffa00e6bfe>] vhba_ctl_read+0x1fe/0x2e0 [vhba]
Apr 29 22:24:09 vera kernel: [ 306.460199] RSP: 0018:ffff880110a53e38 EFLAGS: 00010202
Apr 29 22:24:09 vera kernel: [ 306.460201] RAX: 0000000000040004 RBX: ffff8801227f8650 RCX: ffff8801276ddb80
Apr 29 22:24:09 vera kernel: [ 306.460202] RDX: ffff8801203aa408 RSI: 0000000000000286 RDI: 00Apr 29 22:24:09 vera kernel: [ 306.460129] BUG: unable to handle kernel paging request at 0000000000040004
Apr 29 22:24:09 vera kernel: [ 306.460135] IP: [<ffffffffa00e6bfe>] vhba_ctl_read+0x1fe/0x2e0 [vhba]
Apr 29 22:24:09 vera kernel: [ 306.460143] PGD 10ec04067 PUD 10ed97067 PMD 0
Apr 29 22:24:09 vera kernel: [ 306.460146] Oops: 0000 [#1] SMP
Apr 29 22:24:09 vera kernel: [ 306.460149] last sysfs file: /sys/devices/pci0000:00/0000:00:1b.0/sound/card0/uevent
Apr 29 22:24:09 vera kernel: [ 306.460151] CPU 1
Apr 29 22:24:09 vera kernel: [ 306.460152] Modules linked in: vboxnetadp vboxnetflt vboxdrv snd_hrtimer binfmt_misc kvm_intel kvm parport_pc ppdev lp parport dm_crypt vesafb usblp snd_hda_codec_hdmi snd_hda_codec_realtek ir_lirc_codec snd_hda_intel snd_hda_codec ir_sony_decoder ir_jvc_decoder snd_hwdep rc_rc6_mce ir_rc6_decoder ir_rc5_decoder snd_pcm ir_nec_decoder mceusb rc_core snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq fglrx(P) saa7164 dvb_core snd_timer snd_seq_device v4l2_common asus_atk0110 videodev v4l2_compat_ioctl32 tveeprom snd vhba lirc_dev soundcore snd_page_alloc radeonfb fb_ddc i2c_algo_bit dm_raid45 xor usbhid usb_storage pata_marvell hid uas atl1e ahci floppy liba...

[Harald Eiermann (harald-eiermann)]

My conclusion were, that the xserver is not involved. Presumably the cdemu applet just triggers something when it is loaded as part of the user's session.

[Henrik S. (henrik-hw0)]

Does the problem persist with the latest version of vhba and the rest of the cdemu stack?

[Henrik S. (henrik-hw0)]

It's been 1 month and no answer so based on the fact that removing the cdemu daemon remedied the problem, I'm going to presume it was a vhba issue and most likely already fixed upstream (current version works fine on kernel 3.0.0 or prior). Marking as Invalid bug for xorg-server.