Public bug reported:

I'm periodically (every few days) getting a "hang" on my Thinkpad W500
running Ubuntu 12.10+updates whereby the system "freezes" for a few
minutes. During this time the mouse pointer won't work, music either
loops or stops

Checking the kernel syslog I see the following as the first
"interesting" event:

Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440025] INFO: task 
jbd2/dm-1-8:367 blocked for more than 120 seconds.
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440029] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440031] jbd2/dm-1-8     D 
ffff88023bc939c0     0   367      2 0x00000000
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440034]  ffff88022b317bc0 
0000000000000046 ffff88022ad41700 ffff88022b317fd8
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440038]  ffff88022b317fd8 
ffff88022b317fd8 ffff880090d12e00 ffff88022ad41700
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440040]  ffff88022b317ba0 
ffff88022ad41700 ffff88023bc94258 0000000000000002
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440043] Call Trace:
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440051]  
[<ffffffff811b23a0>] ? do_thaw_one+0x90/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440055]  
[<ffffffff81682b89>] schedule+0x29/0x70
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440058]  
[<ffffffff81682c5f>] io_schedule+0x8f/0xd0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440060]  
[<ffffffff811b23ae>] sleep_on_buffer+0xe/0x20
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440063]  
[<ffffffff816812f0>] __wait_on_bit+0x60/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440065]  
[<ffffffff811b23a0>] ? do_thaw_one+0x90/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440067]  
[<ffffffff8168139c>] out_of_line_wait_on_bit+0x7c/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440071]  
[<ffffffff810768f0>] ? autoremove_wake_function+0x40/0x40
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440073]  
[<ffffffff811b292e>] __wait_on_buffer+0x2e/0x30
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440077]  
[<ffffffff8126b43f>] jbd2_journal_commit_transaction+0x181f/0x19a0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440081]  
[<ffffffff8127003b>] kjournald2+0xbb/0x240
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440083]  
[<ffffffff810768b0>] ? finish_wait+0x80/0x80
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440085]  
[<ffffffff8126ff80>] ? jbd2_journal_release_jbd_inode+0x130/0x130
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440087]  
[<ffffffff81075f13>] kthread+0x93/0xa0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440090]  
[<ffffffff8168d024>] kernel_thread_helper+0x4/0x10
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440093]  
[<ffffffff81075e80>] ? kthread_freezable_should_stop+0x70/0x70
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440095]  
[<ffffffff8168d020>] ? gs_change+0x13/0x13


but this is then repeated 

Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440098] INFO: task rs:main 
Q:Reg:758 blocked for more than 120 seconds.
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440099] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440100] rs:main Q:Reg   D 
ffff88023bc139c0     0   758      1 0x00000000
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440102]  ffff88022f1bf8d8 
0000000000000086 ffff88022a5d5c00 ffff88022f1bffd8
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440105]  ffff88022f1bffd8 
ffff88022f1bffd8 ffff88022de32e00 ffff88022a5d5c00
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440107]  ffff88022f1bf8a8 
ffff88022a5d5c00 ffff88023bc14258 0000000000000002
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440110] Call Trace:
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440112]  
[<ffffffff811b23a0>] ? do_thaw_one+0x90/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440115]  
[<ffffffff81682b89>] schedule+0x29/0x70
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440117]  
[<ffffffff81682c5f>] io_schedule+0x8f/0xd0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440119]  
[<ffffffff811b23ae>] sleep_on_buffer+0xe/0x20
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440121]  
[<ffffffff816812f0>] __wait_on_bit+0x60/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440124]  
[<ffffffff811b791a>] ? bio_alloc_bioset+0x5a/0xf0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440126]  
[<ffffffff811b23a0>] ? do_thaw_one+0x90/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440128]  
[<ffffffff8168139c>] out_of_line_wait_on_bit+0x7c/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440131]  
[<ffffffff810768f0>] ? autoremove_wake_function+0x40/0x40
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440133]  
[<ffffffff811b292e>] __wait_on_buffer+0x2e/0x30
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440136]  
[<ffffffff811b57e4>] __block_write_begin+0x394/0x540
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440139]  
[<ffffffff8121b4c0>] ? __check_block_validity.constprop.48+0x80/0x80
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440142]  
[<ffffffff8103fa39>] ? default_spin_lock_flags+0x9/0x10
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440145]  
[<ffffffff8121e869>] ext4_da_write_begin+0xc9/0x1f0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440148]  
[<ffffffff81122a16>] generic_file_buffered_write+0x116/0x280
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440151]  
[<ffffffff81124726>] __generic_file_aio_write+0x236/0x440
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440153]  
[<ffffffff811249a1>] generic_file_aio_write+0x71/0xe0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440156]  
[<ffffffff81217a1f>] ext4_file_write+0xbf/0x260
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440158]  
[<ffffffff81683aae>] ? _raw_spin_lock+0xe/0x20
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440162]  
[<ffffffff810ab30b>] ? futex_wake+0x10b/0x130
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440164]  
[<ffffffff81181b16>] do_sync_write+0xe6/0x120
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440167]  
[<ffffffff810ad581>] ? do_futex+0x101/0xa60
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440170]  
[<ffffffff812b346c>] ? security_file_permission+0x2c/0xb0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440172]  
[<ffffffff811820f1>] ? rw_verify_area+0x61/0xf0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440174]  
[<ffffffff8118240c>] vfs_write+0xac/0x180
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440176]  
[<ffffffff8118273a>] sys_write+0x4a/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154800.440178]  
[<ffffffff8168bd29>] system_call_fastpath+0x16/0x1b

And then

Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440023] INFO: task 
jbd2/dm-1-8:367 blocked for more than 120 seconds.
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440026] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440028] jbd2/dm-1-8     D 
ffff88023bc939c0     0   367      2 0x00000000
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440032]  ffff88022b317bc0 
0000000000000046 ffff88022ad41700 ffff88022b317fd8
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440035]  ffff88022b317fd8 
ffff88022b317fd8 ffff880090d12e00 ffff88022ad41700
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440037]  ffff88022b317ba0 
ffff88022ad41700 ffff88023bc94258 0000000000000002
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440040] Call Trace:
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440048]  
[<ffffffff811b23a0>] ? do_thaw_one+0x90/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440052]  
[<ffffffff81682b89>] schedule+0x29/0x70
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440055]  
[<ffffffff81682c5f>] io_schedule+0x8f/0xd0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440057]  
[<ffffffff811b23ae>] sleep_on_buffer+0xe/0x20
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440060]  
[<ffffffff816812f0>] __wait_on_bit+0x60/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440062]  
[<ffffffff811b23a0>] ? do_thaw_one+0x90/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440064]  
[<ffffffff8168139c>] out_of_line_wait_on_bit+0x7c/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440068]  
[<ffffffff810768f0>] ? autoremove_wake_function+0x40/0x40
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440070]  
[<ffffffff811b292e>] __wait_on_buffer+0x2e/0x30
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440074]  
[<ffffffff8126b43f>] jbd2_journal_commit_transaction+0x181f/0x19a0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440078]  
[<ffffffff8127003b>] kjournald2+0xbb/0x240
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440080]  
[<ffffffff810768b0>] ? finish_wait+0x80/0x80
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440082]  
[<ffffffff8126ff80>] ? jbd2_journal_release_jbd_inode+0x130/0x130
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440085]  
[<ffffffff81075f13>] kthread+0x93/0xa0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440088]  
[<ffffffff8168d024>] kernel_thread_helper+0x4/0x10
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440090]  
[<ffffffff81075e80>] ? kthread_freezable_should_stop+0x70/0x70
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440092]  
[<ffffffff8168d020>] ? gs_change+0x13/0x13
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440095] INFO: task rs:main 
Q:Reg:758 blocked for more than 120 seconds.
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440096] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440097] rs:main Q:Reg   D 
ffff88023bc139c0     0   758      1 0x00000000
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440100]  ffff88022f1bf8d8 
0000000000000086 ffff88022a5d5c00 ffff88022f1bffd8
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440102]  ffff88022f1bffd8 
ffff88022f1bffd8 ffff88022de32e00 ffff88022a5d5c00
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440105]  ffff88022f1bf8a8 
ffff88022a5d5c00 ffff88023bc14258 0000000000000002
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440107] Call Trace:
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440110]  
[<ffffffff811b23a0>] ? do_thaw_one+0x90/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440112]  
[<ffffffff81682b89>] schedule+0x29/0x70
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440115]  
[<ffffffff81682c5f>] io_schedule+0x8f/0xd0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440117]  
[<ffffffff811b23ae>] sleep_on_buffer+0xe/0x20
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440119]  
[<ffffffff816812f0>] __wait_on_bit+0x60/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440122]  
[<ffffffff811b791a>] ? bio_alloc_bioset+0x5a/0xf0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440124]  
[<ffffffff811b23a0>] ? do_thaw_one+0x90/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440126]  
[<ffffffff8168139c>] out_of_line_wait_on_bit+0x7c/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440129]  
[<ffffffff810768f0>] ? autoremove_wake_function+0x40/0x40
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440131]  
[<ffffffff811b292e>] __wait_on_buffer+0x2e/0x30
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440134]  
[<ffffffff811b57e4>] __block_write_begin+0x394/0x540
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440137]  
[<ffffffff8121b4c0>] ? __check_block_validity.constprop.48+0x80/0x80
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440140]  
[<ffffffff8103fa39>] ? default_spin_lock_flags+0x9/0x10
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440143]  
[<ffffffff8121e869>] ext4_da_write_begin+0xc9/0x1f0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440146]  
[<ffffffff81122a16>] generic_file_buffered_write+0x116/0x280
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440149]  
[<ffffffff81124726>] __generic_file_aio_write+0x236/0x440
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440151]  
[<ffffffff811249a1>] generic_file_aio_write+0x71/0xe0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440154]  
[<ffffffff81217a1f>] ext4_file_write+0xbf/0x260
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440156]  
[<ffffffff81683aae>] ? _raw_spin_lock+0xe/0x20
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440160]  
[<ffffffff810ab30b>] ? futex_wake+0x10b/0x130
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440162]  
[<ffffffff81181b16>] do_sync_write+0xe6/0x120
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440165]  
[<ffffffff810ad581>] ? do_futex+0x101/0xa60
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440168]  
[<ffffffff812b346c>] ? security_file_permission+0x2c/0xb0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440170]  
[<ffffffff811820f1>] ? rw_verify_area+0x61/0xf0
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440172]  
[<ffffffff8118240c>] vfs_write+0xac/0x180
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440174]  
[<ffffffff8118273a>] sys_write+0x4a/0x90
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440176]  
[<ffffffff8168bd29>] system_call_fastpath+0x16/0x1b
Jan 25 11:03:28 jonesn-ThinkPad-W500 kernel: [154920.440239] INFO: task 
zeitgeist-datah:3881 blocked for more than 120 seconds.

rather than post all here I'll ensure the log is attached.

Not sure what the cause is - filesystem related? corruption?
I am using LVM and my main filesystems are on a 120GB SSD

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-22-generic 3.5.0-22.34
ProcVersionSignature: Ubuntu 3.5.0-22.34-generic 3.5.7.2
Uname: Linux 3.5.0-22-generic x86_64
ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  jonesn     3339 F.... pulseaudio
 /dev/snd/pcmC1D0p:   jonesn     3339 F...m pulseaudio
 /dev/snd/controlC0:  jonesn     3339 F.... pulseaudio
Date: Fri Jan 25 11:50:52 2013
HibernationDevice: RESUME=UUID=9a4a176a-455a-45e5-91f8-c5889d6043da
InstallationDate: Installed on 2012-11-27 (58 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 4061BM6
MarkForUpload: True
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-22-generic 
root=/dev/mapper/ubuntu-root ro quiet splash modeset=1 hybridopts=ON,DIS 
vt.handoff=7
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory 
/home/jonesn not ours.
 No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-22-generic N/A
 linux-backports-modules-3.5.0-22-generic  N/A
 linux-firmware                            1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/14/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 6FET92WW (3.22 )
dmi.board.name: 4061BM6
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: 
dmi:bvnLENOVO:bvr6FET92WW(3.22):bd12/14/2011:svnLENOVO:pn4061BM6:pvrThinkPadW500:rvnLENOVO:rn4061BM6:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4061BM6
dmi.product.version: ThinkPad W500
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug quantal third-party-packages

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https://bugs.launchpad.net/bugs/1105010

Title:
  INFO: Task XXXX blocked for more than 120 seconds

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