Bug#603811: linux-image-2.6.26-amd64: SCHED_IDLE issues (tasks blocked for more than 120 seconds)
Package: linux-image-2.6.26-2-amd64
Version: 2.6.26-25
Severity: important
Hi,
I have the almost latest of 2.6.26 stable& 2.6.32-bpo.5-amd64 and the problem occured to me several times today.
Nov 16 23:03:18 hojko kernel: [ 3833.584580] INFO: task mysqld:25098 blocked for more than 120 seconds.
Nov 16 23:03:18 hojko kernel: [ 3833.584639] "echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov 16 23:03:18 hojko kernel: [ 3833.584695] mysqld D ffff880008d95780 0 25098 1920 0x00000000
Nov 16 23:03:18 hojko kernel: [ 3833.584698] ffff8801ec03bf90 0000000000000086 0000000000003e00 00000000000044d0
Nov 16 23:03:18 hojko kernel: [ 3833.584701] ffffffff810c7124 000000000000f9e0 ffff8801ee17ffd8 0000000000015780
Nov 16 23:03:18 hojko kernel: [ 3833.584703] 0000000000015780 ffff88021c66d4c0 ffff88021c66d7b8 0000000600000000
Nov 16 23:03:18 hojko kernel: [ 3833.584706] Call Trace:
Nov 16 23:03:18 hojko kernel: [ 3833.584712] [<ffffffff810c7124>] ? zone_statistics+0x3c/0x5d
Nov 16 23:03:18 hojko kernel: [ 3833.584716] [<ffffffff81016581>] ? read_tsc+0xa/0x20
Nov 16 23:03:18 hojko kernel: [ 3833.584719] [<ffffffff8110d986>] ? sync_buffer+0x0/0x40
Nov 16 23:03:18 hojko kernel: [ 3833.584722] [<ffffffff812f9dc8>] ? io_schedule+0x73/0xb7
Nov 16 23:03:18 hojko kernel: [ 3833.584724] [<ffffffff8110d9c1>] ? sync_buffer+0x3b/0x40
Nov 16 23:03:18 hojko kernel: [ 3833.584726] [<ffffffff812fa1d8>] ? __wait_on_bit_lock+0x3f/0x84
Nov 16 23:03:18 hojko kernel: [ 3833.584728] [<ffffffff8110d986>] ? sync_buffer+0x0/0x40
Nov 16 23:03:18 hojko kernel: [ 3833.584730] [<ffffffff812fa288>] ? out_of_line_wait_on_bit_lock+0x6b/0x77
Nov 16 23:03:18 hojko kernel: [ 3833.584733] [<ffffffff81064af0>] ? wake_bit_function+0x0/0x23
Nov 16 23:03:18 hojko kernel: [ 3833.584735] [<ffffffff8110ddb3>] ? sync_dirty_buffer+0x29/0x93
Nov 16 23:03:18 hojko kernel: [ 3833.584741] [<ffffffffa00d8e00>] ? journal_dirty_data+0xd1/0x1b0 [jbd]
Nov 16 23:03:18 hojko kernel: [ 3833.584745] [<ffffffffa00eef1f>] ? ext3_journal_dirty_data+0xf/0x34 [ext3]
Nov 16 23:03:18 hojko kernel: [ 3833.584749] [<ffffffffa00ed3f9>] ? walk_page_buffers+0x65/0x8b [ext3]
Nov 16 23:03:18 hojko kernel: [ 3833.584752] [<ffffffffa00eef44>] ? journal_dirty_data_fn+0x0/0x13 [ext3]
Nov 16 23:03:18 hojko kernel: [ 3833.584756] [<ffffffffa00f0a42>] ? ext3_ordered_write_end+0x73/0x10f [ext3]
Nov 16 23:03:18 hojko kernel: [ 3833.584760] [<ffffffff810b4901>] ? generic_file_buffered_write+0x18d/0x278
Nov 16 23:03:18 hojko kernel: [ 3833.584763] [<ffffffff810b4d9d>] ? __generic_file_aio_write+0x25f/0x293
Nov 16 23:03:18 hojko kernel: [ 3833.584766] [<ffffffff8123fb5c>] ? sock_aio_write+0xb1/0xbc
Nov 16 23:03:18 hojko kernel: [ 3833.584769] [<ffffffff810b4e2a>] ? generic_file_aio_write+0x59/0x9f
Nov 16 23:03:18 hojko kernel: [ 3833.584772] [<ffffffff810ee3a6>] ? do_sync_write+0xce/0x113
Nov 16 23:03:18 hojko kernel: [ 3833.584775] [<ffffffff81102e15>] ? mntput_no_expire+0x23/0xee
Nov 16 23:03:18 hojko kernel: [ 3833.584777] [<ffffffff81064ac2>] ? autoremove_wake_function+0x0/0x2e
Nov 16 23:03:18 hojko kernel: [ 3833.584780] [<ffffffff810eed1e>] ? vfs_write+0xa9/0x102
Nov 16 23:03:18 hojko kernel: [ 3833.584782] [<ffffffff810eedce>] ? sys_pwrite64+0x57/0x77
Nov 16 23:03:18 hojko kernel: [ 3833.584784] [<ffffffff81010b42>] ? system_call_fastpath+0x16/0x1b
Nov 16 23:03:18 hojko kernel: [ 3833.584787] INFO: task mysqld:25409 blocked for more than 120 seconds.
Nov 16 23:03:18 hojko kernel: [ 3833.584819] "echo 0> /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov 16 23:03:18 hojko kernel: [ 3833.584868] mysqld D ffff880008d95780 0 25409 1920 0x00000000
Nov 16 23:03:18 hojko kernel: [ 3833.584870] ffff88021c66aa60 0000000000000086 0000000000002640 00000000000044d0
Nov 16 23:03:18 hojko kernel: [ 3833.584873] ffffffff810c7124 000000000000f9e0 ffff8801f4afffd8 0000000000015780
Nov 16 23:03:18 hojko kernel: [ 3833.584875] 0000000000015780 ffff8801ede8b880 ffff8801ede8bb78 0000000600000000
Nov 16 23:03:18 hojko kernel: [ 3833.584877] Call Trace:
Nov 16 23:03:18 hojko kernel: [ 3833.584879] [<ffffffff810c7124>] ? zone_statistics+0x3c/0x5d
Nov 16 23:03:18 hojko kernel: [ 3833.584882] [<ffffffff81016581>] ? read_tsc+0xa/0x20
Nov 16 23:03:18 hojko kernel: [ 3833.584884] [<ffffffff8110d986>] ? sync_buffer+0x0/0x40
Nov 16 23:03:18 hojko kernel: [ 3833.584886] [<ffffffff812f9dc8>] ? io_schedule+0x73/0xb7
Nov 16 23:03:18 hojko kernel: [ 3833.584888] [<ffffffff8110d9c1>] ? sync_buffer+0x3b/0x40
Nov 16 23:03:18 hojko kernel: [ 3833.584890] [<ffffffff812fa1d8>] ? __wait_on_bit_lock+0x3f/0x84
Nov 16 23:03:18 hojko kernel: [ 3833.584892] [<ffffffff8110d986>] ? sync_buffer+0x0/0x40
Nov 16 23:03:18 hojko kernel: [ 3833.584894] [<ffffffff812fa288>] ? out_of_line_wait_on_bit_lock+0x6b/0x77
Nov 16 23:03:18 hojko kernel: [ 3833.584896] [<ffffffff81064af0>] ? wake_bit_function+0x0/0x23
Nov 16 23:03:18 hojko kernel: [ 3833.584898] [<ffffffff8110ddb3>] ? sync_dirty_buffer+0x29/0x93
Nov 16 23:03:18 hojko kernel: [ 3833.584901] [<ffffffffa00d8e00>] ? journal_dirty_data+0xd1/0x1b0 [jbd]
Nov 16 23:03:18 hojko kernel: [ 3833.584905] [<ffffffffa00eef1f>] ? ext3_journal_dirty_data+0xf/0x34 [ext3]
Nov 16 23:03:18 hojko kernel: [ 3833.584908] [<ffffffffa00ed3f9>] ? walk_page_buffers+0x65/0x8b [ext3]
Nov 16 23:03:18 hojko kernel: [ 3833.584912] [<ffffffffa00eef44>] ? journal_dirty_data_fn+0x0/0x13 [ext3]
Nov 16 23:03:18 hojko kernel: [ 3833.584915] [<ffffffffa00f0a42>] ? ext3_ordered_write_end+0x73/0x10f [ext3]
Nov 16 23:03:18 hojko kernel: [ 3833.584918] [<ffffffff810b4901>] ? generic_file_buffered_write+0x18d/0x278
Nov 16 23:03:18 hojko kernel: [ 3833.584921] [<ffffffff810b4d9d>] ? __generic_file_aio_write+0x25f/0x293
Nov 16 23:03:18 hojko kernel: [ 3833.584925] [<ffffffff81071774>] ? wake_futex+0x31/0x4e
Nov 16 23:03:18 hojko kernel: [ 3833.584927] [<ffffffff810b4e2a>] ? generic_file_aio_write+0x59/0x9f
Nov 16 23:03:18 hojko kernel: [ 3833.584929] [<ffffffff810ee3a6>] ? do_sync_write+0xce/0x113
Nov 16 23:03:18 hojko kernel: [ 3833.584932] [<ffffffff8100f5e7>] ? __switch_to+0xd0/0x297
Nov 16 23:03:18 hojko kernel: [ 3833.584934] [<ffffffff81064ac2>] ? autoremove_wake_function+0x0/0x2e
Nov 16 23:03:18 hojko kernel: [ 3833.584938] [<ffffffff81047ee7>] ? finish_task_switch+0x3a/0xaf
Nov 16 23:03:18 hojko kernel: [ 3833.584940] [<ffffffff810eed1e>] ? vfs_write+0xa9/0x102
Nov 16 23:03:18 hojko kernel: [ 3833.584942] [<ffffffff810eedce>] ? sys_pwrite64+0x57/0x77
Nov 16 23:03:18 hojko kernel: [ 3833.584944] [<ffffffff81010b42>] ? system_call_fastpath+0x16/0x1b
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