task blocked for more than 120 seconds - 2.6.26.1 - Kernel

This is a discussion on task blocked for more than 120 seconds - 2.6.26.1 - Kernel ; Hi. I seem to be getting these more frequently on 2.6.26.1 16 core Sun X4600 amd64 with 60GB memory. [75586.058734] INFO: task gvim:13618 blocked for more than 120 seconds. [75586.058787] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [75586.058831] efam_xapianin D ...

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Thread: task blocked for more than 120 seconds - 2.6.26.1

  1. task blocked for more than 120 seconds - 2.6.26.1

    Hi.

    I seem to be getting these more frequently on 2.6.26.1

    16 core Sun X4600 amd64 with 60GB memory.

    [75586.058734] INFO: task gvim:13618 blocked for more than 120 seconds.
    [75586.058787] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
    this message.
    [75586.058831] efam_xapianin D ffff81010721e280 0 13618 27917
    [75586.058835] ffff8109384afd78 0000000000000086 ffff8109384afd40
    ffffffff8044c886
    [75586.058838] ffffffff8061e280 ffffffff8061e280 ffffffff8061a4e0
    ffffffff8061e280
    [75586.058840] ffff8103554469c8 ffff8109384afd44 ffff8109384afd38
    ffff8109384afd28
    [75586.058844] Call Trace:
    [75586.058882] [] thread_return+0x3a/0x544
    [75586.058904] [] :jbd:log_wait_commit+0xa5/0x120
    [75586.058911] [] autoremove_wake_function+0x0/0x30
    [75586.058916] [] __wake_up+0x43/0x70
    [75586.058918] [] schedule_timeout+0x5a/0xd0
    [75586.058925] [] :jbd:journal_stop+0x124/0x1b0
    [75586.062713] [] __writeback_single_inode+0x263/0x350
    [75586.062721] [] sync_inode+0x2b/0x40
    [75586.062742] [] :ext3:ext3_sync_file+0xa4/0xc0
    [75586.062748] [] do_fsync+0x69/0xe0
    [75586.062752] [] __do_fsync+0x2e/0x50
    [75586.062756] [] system_call_after_swapgs+0x7b/0x80
    [75586.062762]
    [75714.905221] INFO: task gvim:13618 blocked for more than 120 seconds.
    [75714.905274] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
    this message.
    [75714.905323] efam_xapianin D ffff81010721e280 0 13618 27917
    [75714.905327] ffff8109384afd78 0000000000000086 ffff8109384afd40
    ffffffff8044c886
    [75714.905330] ffffffff8061e280 ffffffff8061e280 ffffffff8061a4e0
    ffffffff8061e280
    [75714.905332] ffff8103554469c8 ffff8109384afd44 ffff8109384afd38
    ffff8109384afd28
    [75714.905335] Call Trace:
    [75714.905373] [] thread_return+0x3a/0x544
    [75714.909151] [] :jbd:log_wait_commit+0xa5/0x120
    [75714.909158] [] autoremove_wake_function+0x0/0x30
    [75714.909165] [] __wake_up+0x43/0x70
    [75714.909170] [] schedule_timeout+0x5a/0xd0
    [75714.909177] [] :jbd:journal_stop+0x124/0x1b0
    [75714.909183] [] __writeback_single_inode+0x263/0x350
    [75714.909193] [] sync_inode+0x2b/0x40
    [75714.909212] [] :ext3:ext3_sync_file+0xa4/0xc0
    [75714.909219] [] do_fsync+0x69/0xe0
    [75714.909225] [] __do_fsync+0x2e/0x50
    [75714.909229] [] system_call_after_swapgs+0x7b/0x80
    [75714.909235]
    [80316.964815] INFO: task gvim:21511 blocked for more than 120 seconds.
    [80316.964853] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
    this message.
    [80316.964901] gvim D ffff810507227280 0 21511 1
    [80316.964904] ffff810eef483ec8 0000000000000082 0000000000000000
    0000000000000000
    [80316.964907] ffffffff8061e280 ffffffff8061e280 ffffffff8061a4e0
    ffffffff8061e280
    [80316.964910] ffff81057a881948 ffff810eef483e94 ffff810eef483e88
    ffff810eef483e78
    [80316.964912] Call Trace:
    [80316.968730] [] __mutex_lock_slowpath+0x81/0xd0
    [80316.968736] [] mutex_lock+0x16/0x20
    [80316.968742] [] do_fsync+0x58/0xe0
    [80316.968745] [] __do_fsync+0x2e/0x50
    [80316.968750] [] system_call_after_swapgs+0x7b/0x80
    [80316.968756]


    --
    Jesper Krogh

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  2. Re: task blocked for more than 120 seconds - 2.6.26.1

    On Wed, Aug 27, 2008 at 03:46:02PM +0200, Jesper Krogh wrote:
    > I seem to be getting these more frequently on 2.6.26.1
    >
    > 16 core Sun X4600 amd64 with 60GB memory.


    My Q6600 amd64 mythtv box has been hanging for minutes at a time before
    simply returning to normal quite a few times under 2.6.26, while 2.6.25
    shows no issues at all. I have seen the same message as you about a
    task being blocked or stuck as well when this happens.

    I didn't want to complain about it since I run tainted with the nvidia
    driver and without the nvidia driver I wouldn't be able to use it and
    reproduce the problem, so I figured there was no point.

    --
    Len Sorensen
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