Tomas Pospisek, it will help immensely if you filed a new report via a terminal:
ubuntu-bug linux
Please feel free to subscribe me to it.
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1115753
Title:
Umount of Multiple LVM Snapshots Causes 'soft lockup CPU#0 stuck for'
Status in linux package in Ubuntu:
Invalid
Bug description:
Simultaneous umount of multiple lvm snapshots causes system to hang /
freeze / deadlock. Window manager freezes. If umount is executed in
a non window-manager tty, messages containing "BUG", "blocked for
more than xx seconds", and a list of tasks associated with each of the
8 cpu cores will scroll up at regular intervals. The tasks assigned
to each cpu core are unchanging over time, appearing to be deadlocked.
No relevant information is left in system logs. Hard reset / poweroff
is required. Problem does not occur 100% of the time. It is less
likely to occur if umount is done shortly after mount. Problem still
occurs -- but less frequently -- if lazy umount -l is used. Snapshots
are read-only, and are mounted read-only.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-37-generic 3.2.0-37.58
ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35
Uname: Linux 3.2.0-37-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: craig 3257 F.... pulseaudio
/dev/snd/controlC0: craig 3257 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 0xfeb00000 irq 16'
Mixer name : 'Realtek ALC889'
Components : 'HDA:10ec0889,1043846b,00100004'
Controls : 49
Simple ctrls : 24
Card1.Amixer.info:
Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfea30000 irq 98'
Mixer name : 'ATI R6xx HDMI'
Components : 'HDA:1002aa01,00aa0100,00100100'
Controls : 6
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Mon Feb 4 18:58:37 2013
HibernationDevice: RESUME=UUID=b788f786-ba76-4eb0-991f-d3bbc339d3f7
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: To be filled by O.E.M. To be filled by O.E.M.
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-37-generic
root=/dev/mapper/volgroup0-root ro
RelatedPackageVersions:
linux-restricted-modules-3.2.0-37-generic N/A
linux-backports-modules-3.2.0-37-generic N/A
linux-firmware 1.79.1
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-10-23 (104 days ago)
dmi.bios.date: 09/27/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0813
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Crosshair V Formula
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr0813:bd09/27/2011:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKComputerINC.:rnCrosshairVFormula:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: To be filled by O.E.M.
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