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Message #55190
[Bug 1306955] Re: Kernel Oops - unable to handle kernel NULL pointer dereference; EIP is at free_thread_info+0xb/0x30
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.15 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.
If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".
Thanks in advance.
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc1-trusty/
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1306955
Title:
Kernel Oops - unable to handle kernel NULL pointer dereference; EIP is
at free_thread_info+0xb/0x30
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
Since upgrading from 10.04 to 12.04, my server suffers from frequent
freezes. I have been unable to find a pattern and the freeze
'behaviour' is not always the same: usually the system does not
respond at all anymore, and sometimes an error message is printed to
the console:
BUG: unable to handle kernel NULL pointer dereference at (null)
free_thread_info+0xb/0x30
The attached kern.log file has the full error messages.
Usually the system can reboot using Alt+SysReq+B, but sometimes that
doesn't even work. And on rare occasions the keyboard lights start
blinking.
Now, there might be more than 1 problem at hand here, but at least
I've got an error message now.
PS: on 10.04 I also had occasional freezes, but that averaged once every 3 months or so. Now it happens once every three days.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: pieter 12649 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xfe8f4000 irq 16'
Mixer name : 'Realtek ALC889'
Components : 'HDA:10ec0889,14627596,00100004'
Controls : 46
Simple ctrls : 22
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=02334aab-e86b-46ec-86b6-ff6495e14a50
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7596
MarkForUpload: True
Package: linux (not installed)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-60-generic root=UUID=4cb48b96-0121-4016-95a7-b076f6a61653 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-60.91-generic 3.2.55
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.2.0-60-generic N/A
linux-backports-modules-3.2.0-60-generic N/A
linux-firmware 1.79.11
RfKill:
Tags: precise
Uname: Linux 3.2.0-60-generic i686
UpgradeStatus: Upgraded to precise on 2014-01-12 (90 days ago)
UserGroups:
dmi.bios.date: 04/23/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V2.6
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 785GM-E51 (MS-7596)
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV2.6:bd04/23/2010:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7596:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rn785GM-E51(MS-7596):rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0:
dmi.product.name: MS-7596
dmi.product.version: 1.0
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
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