My mythbackend computer locked up today, the whole computer, not just mythbackend. Following is the syslog at the time this happened. It's been rock steady for months, and I haven't made any changes lately. I rebooted and now it seems to be functioning normally.<div>
<br></div><div>Any suggestions for what I should do? Is this a sign of disk errors?<div><br></div><div>Thanks,</div><div>Jerry</div><div><br></div><div>Version info:</div><div><br></div><div><div>MythTV Version : v0.24.1-45-g254c9f7</div>
<div>MythTV Branch : fixes/0.24</div><div>Network Protocol : 63</div><div>Library API : 0.24.20110505-1</div><div>QT Version : 4.7.2</div><div>Options compiled in:</div><div> linux debug using_alsa using_oss using_pulse using_pulseoutput using_backend using_bindings_perl using_bindings_python using_dvb using_firewire using_frontend using_hdhomerun using_hdpvr using_iptv using_ivtv using_joystick_menu using_lirc using_mheg using_opengl_video using_opengl_vsync using_qtdbus using_qtwebkit using_v4l using_x11 using_xrandr using_xv using_bindings_perl using_bindings_python using_mythtranscode using_opengl using_vdpau using_ffmpeg_threads using_live using_mheg</div>
</div><div><br></div><div>syslog:</div><div><br></div><div><div>Apr 16 22:30:23 kenny kernel: [270720.200044] INFO: task mythbackend:17865 blocked for more than 120 seconds.</div><div>Apr 16 22:30:23 kenny kernel: [270720.200048] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this mess</div>
<div>age.</div><div>Apr 16 22:30:23 kenny kernel: [270720.200051] mythbackend D 0000000000000000 0 17865 1410 0x00000000</div><div>Apr 16 22:30:23 kenny kernel: [270720.200055] ffff880002d4aef8 0000000000000086 ffff880002d4bfd8 ffff880002d4a000</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200059] 0000000000013d00 ffff880016999a98 ffff880002d4bfd8 0000000000013d00</div><div>Apr 16 22:30:23 kenny kernel: [270720.200063] ffff880019350000 ffff8800169996e0 ffff88003a0026c0 ffff8800169996e0</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200067] Call Trace:</div><div>Apr 16 22:30:23 kenny kernel: [270720.200075] [<ffffffff815c2e7d>] rwsem_down_failed_common+0xcd/0x170</div><div>Apr 16 22:30:23 kenny kernel: [270720.200080] [<ffffffff815c2f33>] rwsem_down_write_failed+0x13/0x20</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200084] [<ffffffff812e69e3>] call_rwsem_down_write_failed+0x13/0x20</div><div>Apr 16 22:30:23 kenny kernel: [270720.200088] [<ffffffff815c2232>] ? down_write+0x32/0x40</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200098] [<ffffffffa0bd1821>] jfs_get_block+0x51/0x220 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200103] [<ffffffff81193565>] __block_write_full_page+0x105/0x3a0</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200106] [<ffffffff81192760>] ? end_buffer_async_write+0x0/0x170</div><div>Apr 16 22:30:23 kenny kernel: [270720.200111] [<ffffffffa0bd17d0>] ? jfs_get_block+0x0/0x220 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200116] [<ffffffffa0bd17d0>] ? jfs_get_block+0x0/0x220 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200119] [<ffffffff81194513>] block_write_full_page_endio+0xe3/0x120</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200122] [<ffffffff81194565>] block_write_full_page+0x15/0x20</div><div>Apr 16 22:30:23 kenny kernel: [270720.200127] [<ffffffffa0bd17c8>] jfs_writepage+0x18/0x20 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200131] [<ffffffff811594a7>] fallback_migrate_page+0xc7/0x130</div><div>Apr 16 22:30:23 kenny kernel: [270720.200135] [<ffffffff81159613>] move_to_new_page+0x103/0x120</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200138] [<ffffffff81159ac6>] unmap_and_move+0x2f6/0x350</div><div>Apr 16 22:30:23 kenny kernel: [270720.200142] [<ffffffff8114e7d0>] ? compaction_alloc+0x0/0x70</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200146] [<ffffffff81159d12>] migrate_pages+0xa2/0x150</div><div>Apr 16 22:30:23 kenny kernel: [270720.200149] [<ffffffff8114e9a4>] compact_zone+0xa4/0x220</div><div>
Apr 16 22:30:23 kenny kernel: [270720.200153] [<ffffffff8114ecec>] compact_zone_order+0xac/0xf0</div><div>Apr 16 22:30:23 kenny kernel: [270720.200156] [<ffffffff8105f464>] ? try_to_wake_up+0x244/0x3e0</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200160] [<ffffffff8114edfd>] try_to_compact_pages+0xcd/0x100</div><div>Apr 16 22:30:23 kenny kernel: [270720.200164] [<ffffffff8111413f>] __alloc_pages_direct_compact+0xcf/0x190</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200167] [<ffffffff8111463d>] __alloc_pages_nodemask+0x43d/0x840</div><div>Apr 16 22:30:23 kenny kernel: [270720.200171] [<ffffffff81149f65>] alloc_pages_current+0xa5/0x110</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200174] [<ffffffff811536b5>] new_slab+0x1f5/0x290</div><div>Apr 16 22:30:23 kenny kernel: [270720.200177] [<ffffffff81155152>] __slab_alloc+0x1b2/0x390</div><div>Apr 16 22:30:23 kenny kernel: [270720.200180] [<ffffffff812dfc79>] ? radix_tree_preload+0x39/0xa0</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200183] [<ffffffff812dfc79>] ? radix_tree_preload+0x39/0xa0</div><div>Apr 16 22:30:23 kenny kernel: [270720.200186] [<ffffffff81155b25>] kmem_cache_alloc+0x115/0x120</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200189] [<ffffffff812dfc79>] radix_tree_preload+0x39/0xa0</div><div>Apr 16 22:30:23 kenny kernel: [270720.200194] [<ffffffff8110ca2b>] add_to_page_cache_locked+0x7b/0x160</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200197] [<ffffffff8110cb3c>] add_to_page_cache_lru+0x2c/0x80</div><div>Apr 16 22:30:23 kenny kernel: [270720.200200] [<ffffffff8110c8be>] ? find_get_page+0x1e/0x90</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200204] [<ffffffff8110ccba>] do_read_cache_page+0x6a/0x180</div><div>Apr 16 22:30:23 kenny kernel: [270720.200210] [<ffffffffa0be9990>] ? metapage_readpage+0x0/0x190 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200213] [<ffffffff8110ce19>] read_cache_page_async+0x19/0x20</div><div>Apr 16 22:30:23 kenny kernel: [270720.200217] [<ffffffff8110ce2e>] read_cache_page+0xe/0x20</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200222] [<ffffffffa0bea224>] __get_metapage+0x94/0x5d0 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200228] [<ffffffffa0bdfd06>] dbAllocCtl+0x2a6/0x310 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200233] [<ffffffffa0be007e>] dbAllocAG+0x30e/0x3b0 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200239] [<ffffffffa0be0e99>] dbAlloc+0xe9/0x470 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200242] [<ffffffff81114325>] ? __alloc_pages_nodemask+0x125/0x840</div><div>Apr 16 22:30:23 kenny kernel: [270720.200248] [<ffffffffa0be8db2>] extBalloc+0x82/0x1c0 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200253] [<ffffffffa0be8fd4>] extAlloc+0xe4/0x300 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200258] [<ffffffffa0bd199c>] jfs_get_block+0x1cc/0x220 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200263] [<ffffffff81191713>] ? alloc_buffer_head+0x43/0x50</div><div>Apr 16 22:30:23 kenny kernel: [270720.200266] [<ffffffff811953da>] nobh_write_begin+0x1ca/0x460</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200271] [<ffffffffa0bd1716>] jfs_write_begin+0x46/0x80 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200276] [<ffffffffa0bd17d0>] ? jfs_get_block+0x0/0x220 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200279] [<ffffffff8110b902>] generic_perform_write+0xc2/0x1d0</div><div>Apr 16 22:30:23 kenny kernel: [270720.200283] [<ffffffff8110ba6e>] generic_file_buffered_write+0x5e/0x90</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200287] [<ffffffff8110d9f9>] __generic_file_aio_write+0x229/0x440</div><div>Apr 16 22:30:23 kenny kernel: [270720.200291] [<ffffffff8109b374>] ? futex_wait+0x204/0x300</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200294] [<ffffffff8110dc76>] generic_file_aio_write+0x66/0xd0</div><div>Apr 16 22:30:23 kenny kernel: [270720.200298] [<ffffffff811646a2>] do_sync_write+0xd2/0x110</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200301] [<ffffffff8109a02a>] ? get_futex_key+0x15a/0x1d0</div><div>Apr 16 22:30:23 kenny kernel: [270720.200307] [<ffffffff812ae868>] ? apparmor_file_permission+0x18/0x20</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200311] [<ffffffff81279c3c>] ? security_file_permission+0x2c/0xb0</div><div>Apr 16 22:30:23 kenny kernel: [270720.200314] [<ffffffff81164ad1>] ? rw_verify_area+0x61/0xf0</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200317] [<ffffffff81164e16>] vfs_write+0xc6/0x180</div><div>Apr 16 22:30:23 kenny kernel: [270720.200320] [<ffffffff81165131>] sys_write+0x51/0x90</div><div>Apr 16 22:30:23 kenny kernel: [270720.200324] [<ffffffff8100c002>] system_call_fastpath+0x16/0x1b</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200327] INFO: task mythbackend:17866 blocked for more than 120 seconds.</div><div>Apr 16 22:30:23 kenny kernel: [270720.200329] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200331] mythbackend D 0000000000000000 0 17866 1410 0x00000000</div><div>Apr 16 22:30:23 kenny kernel: [270720.200335] ffff880002d3fa28 0000000000000086 ffff880002d3ffd8 ffff880002d3e000</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200338] 0000000000013d00 ffff8800373e03b8 ffff880002d3ffd8 0000000000013d00</div><div>Apr 16 22:30:23 kenny kernel: [270720.200342] ffffffff81a0b020 ffff8800373e0000 ffff880002d3fa58 ffff8800373e0000</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200345] Call Trace:</div><div>Apr 16 22:30:23 kenny kernel: [270720.200349] [<ffffffff815c2e7d>] rwsem_down_failed_common+0xcd/0x170</div><div>Apr 16 22:30:23 kenny kernel: [270720.200353] [<ffffffff815c2f33>] rwsem_down_write_failed+0x13/0x20</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200356] [<ffffffff812e69e3>] call_rwsem_down_write_failed+0x13/0x20</div><div>Apr 16 22:30:23 kenny kernel: [270720.200360] [<ffffffff815c2232>] ? down_write+0x32/0x40</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200365] [<ffffffffa0bd1821>] jfs_get_block+0x51/0x220 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200369] [<ffffffff812c3431>] ? __generic_unplug_device+0x21/0x40</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200373] [<ffffffff8119c695>] __mpage_writepage+0x455/0x660</div><div>Apr 16 22:30:23 kenny kernel: [270720.200388] [<ffffffff812dfead>] ? radix_tree_gang_lookup_tag_slot+0x8d/0xd0</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200392] [<ffffffff8110c6b0>] ? find_get_pages_tag+0x40/0x120</div><div>Apr 16 22:30:23 kenny kernel: [270720.200395] [<ffffffff81115f2d>] write_cache_pages+0x1ed/0x470</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200399] [<ffffffff8119c240>] ? __mpage_writepage+0x0/0x660</div><div>Apr 16 22:30:23 kenny kernel: [270720.200403] [<ffffffff8119ba6d>] mpage_writepages+0x3d/0x70</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200418] [<ffffffffa0bd17d0>] ? jfs_get_block+0x0/0x220 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200423] [<ffffffffa0bd1785>] jfs_writepages+0x15/0x20 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200426] [<ffffffff81117191>] do_writepages+0x21/0x40</div><div>Apr 16 22:30:23 kenny kernel: [270720.200430] [<ffffffff8110d5bb>] __filemap_fdatawrite_range+0x5b/0x60</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200433] [<ffffffff8110d61a>] filemap_write_and_wait_range+0x5a/0x80</div><div>Apr 16 22:30:23 kenny kernel: [270720.200437] [<ffffffff8118fc7a>] vfs_fsync_range+0x5a/0x90</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200440] [<ffffffff8118fd1c>] vfs_fsync+0x1c/0x20</div><div>Apr 16 22:30:23 kenny kernel: [270720.200444] [<ffffffff8118fd5a>] do_fsync+0x3a/0x60</div><div>Apr 16 22:30:23 kenny kernel: [270720.200447] [<ffffffff8118fff3>] sys_fdatasync+0x13/0x20</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200450] [<ffffffff8100c002>] system_call_fastpath+0x16/0x1b</div><div>Apr 16 22:30:23 kenny kernel: [270720.200453] INFO: task mythbackend:17869 blocked for more than 120 seconds.</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200455] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.</div><div>Apr 16 22:30:23 kenny kernel: [270720.200457] mythbackend D 0000000000000000 0 17869 1410 0x00000000</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200460] ffff8800194f3820 0000000000000086 ffff8800194f3fd8 ffff8800194f2000</div><div>Apr 16 22:30:23 kenny kernel: [270720.200464] 0000000000013d00 ffff88001072b178 ffff8800194f3fd8 0000000000013d00</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200467] ffff88000d0dadc0 ffff88001072adc0 ffffffff81114325 ffff88001072adc0</div><div>Apr 16 22:30:23 kenny kernel: [270720.200470] Call Trace:</div><div>Apr 16 22:30:23 kenny kernel: [270720.200473] [<ffffffff81114325>] ? __alloc_pages_nodemask+0x125/0x840</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200477] [<ffffffff815c2e7d>] rwsem_down_failed_common+0xcd/0x170</div><div>Apr 16 22:30:23 kenny kernel: [270720.200481] [<ffffffff815c2f55>] rwsem_down_read_failed+0x15/0x17</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200485] [<ffffffff812e69b4>] call_rwsem_down_read_failed+0x14/0x30</div><div>Apr 16 22:30:23 kenny kernel: [270720.200488] [<ffffffff815c2264>] ? down_read+0x24/0x30</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200494] [<ffffffffa0be0f6b>] dbAlloc+0x1bb/0x470 [jfs]</div><div>Apr 16 22:30:23 kenny kernel: [270720.200500] [<ffffffffa0be8db2>] extBalloc+0x82/0x1c0 [jfs]</div>
<div>Apr 16 22:30:23 kenny kernel: [270720.200505] [<ffffffffa0be8fd4>] extAlloc+0xe4/0x300 [jfs]</div><div><br></div></div><div>[more similar blocks repeated]</div><div><br></div></div>