Kernel logs

July 11, 2009

linux

So, there I am browsing my logs.

BAM

[650521.310292] INFO: task mysqld:2730 blocked for more than 120 seconds.
[650521.310320] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[650521.310364] mysqld        D 00000000     0  2730   2674
[650521.310367]  f6183ce0 00000086 c06ef6cc 00000000 f61c8c70 7834922a 00000dc2 00020050
[650521.310373]  00000296 c0796fe0 c0796fe0 f61c8f04 c2c35fe0 00000003 9500b16e 00024f83
[650521.310379]  00000002 00000002 f66bb500 f6d02e40 c2bf2090 f6e2e680 f6183ce8 c050eb68
[650521.310384] Call Trace:
[650521.310388]  [<c050eb68>] schedule+0x8/0x20
[650521.310391]  [<c0266701>] do_get_write_access+0x2a1/0x3d0
[650521.310395]  [<c0127d93>] ? kmap_atomic_prot+0x43/0xe0
[650521.310398]  [<c0150030>] ? wake_bit_function+0x0/0x60
[650521.310402]  [<c02669a3>] jbd2_journal_get_write_access+0x23/0x40
[650521.310405]  [<c0252a36>] __ext4_journal_get_write_access+0x26/0x60
[650521.310409]  [<c023e9d4>] ext4_reserve_inode_write+0x34/0x70
[650521.310413]  [<c023ea45>] ext4_mark_inode_dirty+0x35/0x140
[650521.310416]  [<c02669ac>] ? jbd2_journal_get_write_access+0x2c/0x40
[650521.310420]  [<c02446cf>] add_dirent_to_buf+0x12f/0x340
[650521.310423]  [<c0245032>] ext4_add_entry+0xe2/0x1d0
[650521.310427]  [<c024540a>] ext4_add_nondir+0x1a/0x70
[650521.310430]  [<c0245814>] ext4_create+0xc4/0x100
[650521.310434]  [<c01d0ced>] vfs_create+0xcd/0x170
[650521.310437]  [<c01d2562>] __open_namei_create+0x42/0xa0
[650521.310441]  [<c01d2be0>] do_filp_open+0x620/0x660
[650521.310444]  [<c01ca888>] ? cp_new_stat64+0xe8/0x100
[650521.310448]  [<c02d3a67>] ? strncpy_from_user+0x37/0x60
[650521.310451]  [<c01c52a1>] do_sys_open+0x51/0xe0
[650521.310455]  [<c01c5399>] sys_open+0x29/0x40
[650521.310458]  [<c0102ebc>] sysenter_do_call+0x12/0x28

Okay, what the hell…Two questions.

  1. What does it mean? Did the kernel crash or is this some kind of (error) reporting from the kernel?
  2. What should I do? Is this worth reporting as I’m running 2.6.30 (which is pretty new)?
None