Public bug reported:
I have gotten a number of these since installing this 2.6.38-10-generic
kernel and even though I have a serial console connected to this
machine, for some reason these are not making it out of the console.
Below is a transcription from a photograph (attached) of the console.
Please excuse any typos.
BUG: unable to handle kernel NULL pointer dereference at 0000002f
IP: [<c1148665>] sync_inodes_sb+0xb5/0x140
*pde - 0587d067 *pte = 00000000
Oops: 0000 [#1] SMP
last sysfs file: /sys/devices/virtual/block/dm-10/dm/name
Modules linked in: ivtv cx2341x lirc_dev nfs fscache nfsd lockd nfs_acl
auth_rpcgss sunrpc exportfs autofs4 snd_usb_audio snd_hwdep snd_usbmidi_lib
tuner_simple tuner_types snd_pcm wm8775 snd_seq_midi tda9887 tda8290 xc5000
snd_rawmidi tea5767 snd_seq_midi_event au8522 tuner snd_seq i915 snd_timer
cx25840 au0828 snd_seq_device drm_kms_helper dvb_core drm videobuf_vmalloc
videobuf_core tveeprom v4l2_common snd ppdev shpchp videodev i2c_algo_bit
soundcore snd_page_alloc dcdbas parport_pc video parport pcspkr hwmon_vid b44
r8169 ssb sata_sil floppy [last unloaded: cx2341x ]
Pid 30176, comm: mount Not tainted 2.6.38-10-generic #46-Ubuntu Dell Computer
Coporation Dimension 2400
EIP: 0060:[<c1148665>] EFLAGS: 00010246 CPU: 0
EIP is at sync_inodes_sb+0xb5/0x140
EAX: 00800000 EBX: c002fd8c ECX: 00000000 EDX: c002fddc
ESI: ffffffff EDI: f0c0cc70 EBP: c58a1ef8 ESP: c58a1eb8
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process mount (pid: 30176, it=c58a0000 task-c0013f20 task.ti=c58a0000
Stack:
f0c0cc00 c7c61f14 7fffffff f0c0cc00 00000001 00000000 c58a1ed0 c58a1ed0
c58a1edc 00000000 00000202 c58a1ee4 c58a1ee4 f0c0cc00 00000001 c116b7d0
c58a1f0c c114c7ff f0c0cc00 fffffff3 00000000 c58a1f18 c114c869 f0c0cc00
Call Trace:
[<c116b7d0>] ? dquot_quota_sync+0x0/0x2d0
[<c114c7ff>] __sync_filesystem+0x7f/0x90
[<c114c869>] sync_filesystem+0x39/0x50
[<c112a046>] do_remount_sb+0x56/0x110
[<c11405f8>] do_remount+0xb8/0x100
[<c1142aec>] do_mount+0x16c/0x1e0
[<c1142ecb>] sys_mount+0x6b/0xa0
[<c150a194>] syscall_call+0x7/0xb
Code: 70 c7 45 c4 00 00 00 00 83 eb 50 eb 04 90 8d 58 b0 8b 43 50 0f 18 00 90
8d 53 50 39 fa 74 4f f6 43 30 38 75 e9 8b b3 c4 00 00 00 <8b> 56 30 85 d2 74 dc
89 d8 e8 3d 5f ff ff b8 40 49 90 c1 e8 a3
EIP: [<c1148665>] sync_inodes_sb+0xb5/0x140 SS:ESP 0068:c58a1eb8
CR2: 000000000000002f
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-10-generic 2.6.38-10.46
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices: **** List of PLAYBACK Hardware Devices ****
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 1: HVR950Q [HVR-950Q], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/by-id', '/dev/snd/controlC1', '/dev/snd/pcmC1D0c', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
Card1.Amixer.info:
Card hw:1 'HVR950Q'/'Hauppauge HVR-950Q at usb-0000:00:1d.7-4, high speed'
Mixer name : 'USB Mixer'
Components : 'USB2040:7200'
Controls : 1
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'Digital In',0
Capabilities: cswitch cswitch-joined penum
Capture channels: Mono
Mono: Capture [on]
Date: Wed Aug 10 07:42:19 2011
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
eth2 no wireless extensions.
Lsusb:
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 2040:7200 Hauppauge
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Computer Corporation Dimension 2400
ProcEnviron:
PATH=(custom, no user)
LANG=en_CA.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-10-generic
root=/dev/mapper/rootvol_tmp-ubuntu_root ro console=ttyS0,115200 console=tty0
resume=/dev/mapper/rootvol-swap vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-10-generic N/A
linux-backports-modules-2.6.38-10-generic N/A
linux-firmware 1.52
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/02/2003
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A05
dmi.board.name: 0F5949
dmi.board.vendor: Dell Computer Corp.
dmi.board.version: A01
dmi.chassis.type: 15
dmi.chassis.vendor: Dell Computer Corporation
dmi.modalias:
dmi:bvnDellComputerCorporation:bvrA05:bd12/02/2003:svnDellComputerCorporation:pnDimension2400:pvr:rvnDellComputerCorp.:rn0F5949:rvrA01:cvnDellComputerCorporation:ct15:cvr:
dmi.product.name: Dimension 2400
dmi.sys.vendor: Dell Computer Corporation
** Affects: linux
Importance: Unknown
Status: Unknown
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 natty
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https://bugs.launchpad.net/bugs/823873
Title:
NULL pointer deref in sync_inodes_sb
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