BUG: unable to handle kernel NULL pointer dereference at (null)

[Jen W.]

[ 10.605698] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 10.605703] IP: [<ffffffffa016326a>] via_build_pcms+0x11a/0x230 [snd_hda_codec_via]
[ 10.605713] PGD 0
[ 10.605715] Oops: 0000 [#1] SMP
[ 10.605718] last sysfs file: /sys/module/snd_hda_codec/initstate
[ 10.605722] CPU 0
[ 10.605724] Modules linked in: snd_hda_codec_via ppdev snd_hda_intel(+) snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi iptable_filter snd_rawmidi snd_seq_midi_event ip_tables x_tables snd_seq psmouse serio_raw i2c_viapro snd_timer snd_seq_device snd soundcore snd_page_alloc shpchp lp parport sata_via via_rhine mii via_agp
[ 10.605751] Pid: 678, comm: work_for_cpu Not tainted 2.6.31-19-generic #56-Ubuntu P4M900T-M2
[ 10.605754] RIP: 0010:[<ffffffffa016326a>] [<ffffffffa016326a>] via_build_pcms+0x11a/0x230 [snd_hda_codec_via]
[ 10.605759] RSP: 0018:ffff88006850fdf0 EFLAGS: 00010246
[ 10.605761] RAX: ffff88006788b000 RBX: ffff8800699d5c00 RCX: ffff88006788b110
[ 10.605764] RDX: 0000000000000000 RSI: ffffffffa0163770 RDI: ffff8800699d5c00
[ 10.605766] RBP: ffff88006850fdf0 R08: 00000000fffffffe R09: 0000000000000000
[ 10.605768] R10: 0000000000000000 R11: 0000000000000001 R12: ffff880068830658
[ 10.605770] R13: ffff8800699d5c00 R14: ffff8800699d3cb8 R15: 000000000008c000
[ 10.605773] FS: 0000000000000000(0000) GS:ffff8800019f6000(0000) knlGS:0000000000000000
[ 10.605776] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 10.605778] CR2: 0000000000000000 CR3: 0000000001001000 CR4: 00000000000006f0
[ 10.605780] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 10.605783] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 10.605786] Process work_for_cpu (pid: 678, threadinfo ffff88006850e000, task ffff88006921dac0)
[ 10.605788] Stack:
[ 10.605789] ffff88006850fe50 ffffffffa013b7eb ffffffffa0153280 ffffffffa0153110
[ 10.605793] <0> 0000000000000000 ffffffffa0153360 ffffffffa01520b0 ffff8800699d5c00
[ 10.605797] <0> ffff880068830658 0000000000000000 ffff8800699d3cb8 000000000008c000
[ 10.605802] Call Trace:
[ 10.605815] [<ffffffffa013b7eb>] snd_hda_codec_build_pcms+0x2b/0x280 [snd_hda_codec]
[ 10.605823] [<ffffffffa0153280>] ? azx_send_cmd+0x0/0xd0 [snd_hda_intel]
[ 10.605827] [<ffffffffa0153110>] ? azx_get_response+0x0/0x30 [snd_hda_intel]
[ 10.605832] [<ffffffffa0153360>] ? azx_attach_pcm_stream+0x0/0x1a4 [snd_hda_intel]
[ 10.605836] [<ffffffffa01520b0>] ? azx_bus_reset+0x0/0x90 [snd_hda_intel]
[ 10.605845] [<ffffffffa01431c5>] snd_hda_build_pcms+0x1d/0x40 [snd_hda_codec]
[ 10.605850] [<ffffffffa0153ec9>] azx_probe+0xf3/0x1ce [snd_hda_intel]
[ 10.605859] [<ffffffff81073e50>] ? do_work_for_cpu+0x0/0x30
[ 10.605864] [<ffffffff8128e462>] local_pci_probe+0x12/0x20
[ 10.605867] [<ffffffff81073e63>] do_work_for_cpu+0x13/0x30
[ 10.605871] [<ffffffff810785d6>] kthread+0xa6/0xb0
[ 10.605876] [<ffffffff810130ea>] child_rip+0xa/0x20
[ 10.605879] [<ffffffff81078530>] ? kthread+0x0/0xb0
[ 10.605882] [<ffffffff810130e0>] ? child_rip+0x0/0x20
[ 10.605884] Code: 01 00 00 48 8b 72 30 48 89 b0 90 01 00 00 48 8b 72 38 48 89 b0 98 01 00 00 48 8b 52 40 48 89 90 a0 01 00 00 48 8b 90 e0 00 00 00 <0f> b7 12 66 89 90 6c 01 00 00 8b 90 a8 00 00 00 89 90 20 01 00
[ 10.605915] RIP [<ffffffffa016326a>] via_build_pcms+0x11a/0x230 [snd_hda_codec_via]
[ 10.605920] RSP <ffff88006850fdf0>
[ 10.605922] CR2: 0000000000000000
[ 10.605925] ---[ end trace 07a63665042c74b8 ]---
[ 11.479523] usplash:324 freeing invalid memtype ffffffffd0000000-ffffffffe0000000
[ 17.200007] eth0: no IPv6 routers present
[ 1807.343373] __ratelimit: 24103 callbacks suppressed
[ 1807.343380] gnome-screensav[4032]: segfault at 0 ip 00007febe248a440 sp 00007fffad684990 error 4 in libGL.so.185.18.36[7febe240b000+8d000]
[ 1999.729429] gnome-screensav[4179]: segfault at 0 ip 00007fde44385440 sp 00007fffa2bda540 error 4 in libGL.so.185.18.36[7fde44306000+8d000]
[ 2062.817161] gnome-screensav[4221]: segfault at 0 ip 00007f9fa38c9440 sp 00007fffb0404f70 error 4 in libGL.so.185.18.36[7f9fa384a000+8d000]
[ 2196.089505] mtrr: no MTRR for d0000000,10000000 found

ProblemType: KernelOops
AlsaDevices:
 total 0
 crw-rw----+ 1 root audio 116, 3 2010-02-21 18:59 seq
 crw-rw----+ 1 root audio 116, 2 2010-02-21 18:59 timer
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices: aplay: device_list:223: no soundcards found...
Architecture: amd64
ArecordDevices: arecord: device_list:223: no soundcards found...
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/timer', '/dev/snd/seq', '/dev/sequencer', '/dev/sequencer2'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
Date: Sun Feb 21 17:57:18 2010
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=dca46dea-904a-4d57-a803-e7129473c372
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
Lsusb:
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: ECS P4M900T-M2
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-19-generic root=UUID=2b3d1967-1122-49c8-ac31-09449cc62b51 ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-19-generic N/A
 linux-firmware 1.25
RfKill:

SourcePackage: linux
Tags: kernel-oops
Title: BUG: unable to handle kernel NULL pointer dereference at (null)
Uname: Linux 2.6.31-19-generic x86_64
dmi.bios.date: 02/21/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080014
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P4M900T-M2
dmi.board.vendor: ECS
dmi.board.version: 2.0
dmi.chassis.asset.tag: 0123ABC
dmi.chassis.type: 3
dmi.chassis.vendor: ECS
dmi.chassis.version: 2.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd02/21/2008:svnECS:pnP4M900T-M2:pvr2.0:rvnECS:rnP4M900T-M2:rvr2.0:cvnECS:ct3:cvr2.0:
dmi.product.name: P4M900T-M2
dmi.product.version: 2.0
dmi.sys.vendor: ECS

[Jeremy Foshee (jeremyfoshee)]

Hi Jen,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 525262

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]