apport information ** Attachment added: "CurrentDmesg.txt" https://bugs.launchpad.net/bugs/1306955/+attachment/4081887/+files/CurrentDmesg.txt
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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: Confirmed 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1306955/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
