[mythtv-users] Kernel errors
Jerry Rubinow
jerrymr at gmail.com
Tue Apr 17 03:36:22 UTC 2012
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.
Any suggestions for what I should do? Is this a sign of disk errors?
Thanks,
Jerry
Version info:
MythTV Version : v0.24.1-45-g254c9f7
MythTV Branch : fixes/0.24
Network Protocol : 63
Library API : 0.24.20110505-1
QT Version : 4.7.2
Options compiled in:
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
syslog:
Apr 16 22:30:23 kenny kernel: [270720.200044] INFO: task mythbackend:17865
blocked for more than 120 seconds.
Apr 16 22:30:23 kenny kernel: [270720.200048] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this mess
age.
Apr 16 22:30:23 kenny kernel: [270720.200051] mythbackend D
0000000000000000 0 17865 1410 0x00000000
Apr 16 22:30:23 kenny kernel: [270720.200055] ffff880002d4aef8
0000000000000086 ffff880002d4bfd8 ffff880002d4a000
Apr 16 22:30:23 kenny kernel: [270720.200059] 0000000000013d00
ffff880016999a98 ffff880002d4bfd8 0000000000013d00
Apr 16 22:30:23 kenny kernel: [270720.200063] ffff880019350000
ffff8800169996e0 ffff88003a0026c0 ffff8800169996e0
Apr 16 22:30:23 kenny kernel: [270720.200067] Call Trace:
Apr 16 22:30:23 kenny kernel: [270720.200075] [<ffffffff815c2e7d>]
rwsem_down_failed_common+0xcd/0x170
Apr 16 22:30:23 kenny kernel: [270720.200080] [<ffffffff815c2f33>]
rwsem_down_write_failed+0x13/0x20
Apr 16 22:30:23 kenny kernel: [270720.200084] [<ffffffff812e69e3>]
call_rwsem_down_write_failed+0x13/0x20
Apr 16 22:30:23 kenny kernel: [270720.200088] [<ffffffff815c2232>] ?
down_write+0x32/0x40
Apr 16 22:30:23 kenny kernel: [270720.200098] [<ffffffffa0bd1821>]
jfs_get_block+0x51/0x220 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200103] [<ffffffff81193565>]
__block_write_full_page+0x105/0x3a0
Apr 16 22:30:23 kenny kernel: [270720.200106] [<ffffffff81192760>] ?
end_buffer_async_write+0x0/0x170
Apr 16 22:30:23 kenny kernel: [270720.200111] [<ffffffffa0bd17d0>] ?
jfs_get_block+0x0/0x220 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200116] [<ffffffffa0bd17d0>] ?
jfs_get_block+0x0/0x220 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200119] [<ffffffff81194513>]
block_write_full_page_endio+0xe3/0x120
Apr 16 22:30:23 kenny kernel: [270720.200122] [<ffffffff81194565>]
block_write_full_page+0x15/0x20
Apr 16 22:30:23 kenny kernel: [270720.200127] [<ffffffffa0bd17c8>]
jfs_writepage+0x18/0x20 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200131] [<ffffffff811594a7>]
fallback_migrate_page+0xc7/0x130
Apr 16 22:30:23 kenny kernel: [270720.200135] [<ffffffff81159613>]
move_to_new_page+0x103/0x120
Apr 16 22:30:23 kenny kernel: [270720.200138] [<ffffffff81159ac6>]
unmap_and_move+0x2f6/0x350
Apr 16 22:30:23 kenny kernel: [270720.200142] [<ffffffff8114e7d0>] ?
compaction_alloc+0x0/0x70
Apr 16 22:30:23 kenny kernel: [270720.200146] [<ffffffff81159d12>]
migrate_pages+0xa2/0x150
Apr 16 22:30:23 kenny kernel: [270720.200149] [<ffffffff8114e9a4>]
compact_zone+0xa4/0x220
Apr 16 22:30:23 kenny kernel: [270720.200153] [<ffffffff8114ecec>]
compact_zone_order+0xac/0xf0
Apr 16 22:30:23 kenny kernel: [270720.200156] [<ffffffff8105f464>] ?
try_to_wake_up+0x244/0x3e0
Apr 16 22:30:23 kenny kernel: [270720.200160] [<ffffffff8114edfd>]
try_to_compact_pages+0xcd/0x100
Apr 16 22:30:23 kenny kernel: [270720.200164] [<ffffffff8111413f>]
__alloc_pages_direct_compact+0xcf/0x190
Apr 16 22:30:23 kenny kernel: [270720.200167] [<ffffffff8111463d>]
__alloc_pages_nodemask+0x43d/0x840
Apr 16 22:30:23 kenny kernel: [270720.200171] [<ffffffff81149f65>]
alloc_pages_current+0xa5/0x110
Apr 16 22:30:23 kenny kernel: [270720.200174] [<ffffffff811536b5>]
new_slab+0x1f5/0x290
Apr 16 22:30:23 kenny kernel: [270720.200177] [<ffffffff81155152>]
__slab_alloc+0x1b2/0x390
Apr 16 22:30:23 kenny kernel: [270720.200180] [<ffffffff812dfc79>] ?
radix_tree_preload+0x39/0xa0
Apr 16 22:30:23 kenny kernel: [270720.200183] [<ffffffff812dfc79>] ?
radix_tree_preload+0x39/0xa0
Apr 16 22:30:23 kenny kernel: [270720.200186] [<ffffffff81155b25>]
kmem_cache_alloc+0x115/0x120
Apr 16 22:30:23 kenny kernel: [270720.200189] [<ffffffff812dfc79>]
radix_tree_preload+0x39/0xa0
Apr 16 22:30:23 kenny kernel: [270720.200194] [<ffffffff8110ca2b>]
add_to_page_cache_locked+0x7b/0x160
Apr 16 22:30:23 kenny kernel: [270720.200197] [<ffffffff8110cb3c>]
add_to_page_cache_lru+0x2c/0x80
Apr 16 22:30:23 kenny kernel: [270720.200200] [<ffffffff8110c8be>] ?
find_get_page+0x1e/0x90
Apr 16 22:30:23 kenny kernel: [270720.200204] [<ffffffff8110ccba>]
do_read_cache_page+0x6a/0x180
Apr 16 22:30:23 kenny kernel: [270720.200210] [<ffffffffa0be9990>] ?
metapage_readpage+0x0/0x190 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200213] [<ffffffff8110ce19>]
read_cache_page_async+0x19/0x20
Apr 16 22:30:23 kenny kernel: [270720.200217] [<ffffffff8110ce2e>]
read_cache_page+0xe/0x20
Apr 16 22:30:23 kenny kernel: [270720.200222] [<ffffffffa0bea224>]
__get_metapage+0x94/0x5d0 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200228] [<ffffffffa0bdfd06>]
dbAllocCtl+0x2a6/0x310 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200233] [<ffffffffa0be007e>]
dbAllocAG+0x30e/0x3b0 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200239] [<ffffffffa0be0e99>]
dbAlloc+0xe9/0x470 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200242] [<ffffffff81114325>] ?
__alloc_pages_nodemask+0x125/0x840
Apr 16 22:30:23 kenny kernel: [270720.200248] [<ffffffffa0be8db2>]
extBalloc+0x82/0x1c0 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200253] [<ffffffffa0be8fd4>]
extAlloc+0xe4/0x300 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200258] [<ffffffffa0bd199c>]
jfs_get_block+0x1cc/0x220 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200263] [<ffffffff81191713>] ?
alloc_buffer_head+0x43/0x50
Apr 16 22:30:23 kenny kernel: [270720.200266] [<ffffffff811953da>]
nobh_write_begin+0x1ca/0x460
Apr 16 22:30:23 kenny kernel: [270720.200271] [<ffffffffa0bd1716>]
jfs_write_begin+0x46/0x80 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200276] [<ffffffffa0bd17d0>] ?
jfs_get_block+0x0/0x220 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200279] [<ffffffff8110b902>]
generic_perform_write+0xc2/0x1d0
Apr 16 22:30:23 kenny kernel: [270720.200283] [<ffffffff8110ba6e>]
generic_file_buffered_write+0x5e/0x90
Apr 16 22:30:23 kenny kernel: [270720.200287] [<ffffffff8110d9f9>]
__generic_file_aio_write+0x229/0x440
Apr 16 22:30:23 kenny kernel: [270720.200291] [<ffffffff8109b374>] ?
futex_wait+0x204/0x300
Apr 16 22:30:23 kenny kernel: [270720.200294] [<ffffffff8110dc76>]
generic_file_aio_write+0x66/0xd0
Apr 16 22:30:23 kenny kernel: [270720.200298] [<ffffffff811646a2>]
do_sync_write+0xd2/0x110
Apr 16 22:30:23 kenny kernel: [270720.200301] [<ffffffff8109a02a>] ?
get_futex_key+0x15a/0x1d0
Apr 16 22:30:23 kenny kernel: [270720.200307] [<ffffffff812ae868>] ?
apparmor_file_permission+0x18/0x20
Apr 16 22:30:23 kenny kernel: [270720.200311] [<ffffffff81279c3c>] ?
security_file_permission+0x2c/0xb0
Apr 16 22:30:23 kenny kernel: [270720.200314] [<ffffffff81164ad1>] ?
rw_verify_area+0x61/0xf0
Apr 16 22:30:23 kenny kernel: [270720.200317] [<ffffffff81164e16>]
vfs_write+0xc6/0x180
Apr 16 22:30:23 kenny kernel: [270720.200320] [<ffffffff81165131>]
sys_write+0x51/0x90
Apr 16 22:30:23 kenny kernel: [270720.200324] [<ffffffff8100c002>]
system_call_fastpath+0x16/0x1b
Apr 16 22:30:23 kenny kernel: [270720.200327] INFO: task mythbackend:17866
blocked for more than 120 seconds.
Apr 16 22:30:23 kenny kernel: [270720.200329] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Apr 16 22:30:23 kenny kernel: [270720.200331] mythbackend D
0000000000000000 0 17866 1410 0x00000000
Apr 16 22:30:23 kenny kernel: [270720.200335] ffff880002d3fa28
0000000000000086 ffff880002d3ffd8 ffff880002d3e000
Apr 16 22:30:23 kenny kernel: [270720.200338] 0000000000013d00
ffff8800373e03b8 ffff880002d3ffd8 0000000000013d00
Apr 16 22:30:23 kenny kernel: [270720.200342] ffffffff81a0b020
ffff8800373e0000 ffff880002d3fa58 ffff8800373e0000
Apr 16 22:30:23 kenny kernel: [270720.200345] Call Trace:
Apr 16 22:30:23 kenny kernel: [270720.200349] [<ffffffff815c2e7d>]
rwsem_down_failed_common+0xcd/0x170
Apr 16 22:30:23 kenny kernel: [270720.200353] [<ffffffff815c2f33>]
rwsem_down_write_failed+0x13/0x20
Apr 16 22:30:23 kenny kernel: [270720.200356] [<ffffffff812e69e3>]
call_rwsem_down_write_failed+0x13/0x20
Apr 16 22:30:23 kenny kernel: [270720.200360] [<ffffffff815c2232>] ?
down_write+0x32/0x40
Apr 16 22:30:23 kenny kernel: [270720.200365] [<ffffffffa0bd1821>]
jfs_get_block+0x51/0x220 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200369] [<ffffffff812c3431>] ?
__generic_unplug_device+0x21/0x40
Apr 16 22:30:23 kenny kernel: [270720.200373] [<ffffffff8119c695>]
__mpage_writepage+0x455/0x660
Apr 16 22:30:23 kenny kernel: [270720.200388] [<ffffffff812dfead>] ?
radix_tree_gang_lookup_tag_slot+0x8d/0xd0
Apr 16 22:30:23 kenny kernel: [270720.200392] [<ffffffff8110c6b0>] ?
find_get_pages_tag+0x40/0x120
Apr 16 22:30:23 kenny kernel: [270720.200395] [<ffffffff81115f2d>]
write_cache_pages+0x1ed/0x470
Apr 16 22:30:23 kenny kernel: [270720.200399] [<ffffffff8119c240>] ?
__mpage_writepage+0x0/0x660
Apr 16 22:30:23 kenny kernel: [270720.200403] [<ffffffff8119ba6d>]
mpage_writepages+0x3d/0x70
Apr 16 22:30:23 kenny kernel: [270720.200418] [<ffffffffa0bd17d0>] ?
jfs_get_block+0x0/0x220 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200423] [<ffffffffa0bd1785>]
jfs_writepages+0x15/0x20 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200426] [<ffffffff81117191>]
do_writepages+0x21/0x40
Apr 16 22:30:23 kenny kernel: [270720.200430] [<ffffffff8110d5bb>]
__filemap_fdatawrite_range+0x5b/0x60
Apr 16 22:30:23 kenny kernel: [270720.200433] [<ffffffff8110d61a>]
filemap_write_and_wait_range+0x5a/0x80
Apr 16 22:30:23 kenny kernel: [270720.200437] [<ffffffff8118fc7a>]
vfs_fsync_range+0x5a/0x90
Apr 16 22:30:23 kenny kernel: [270720.200440] [<ffffffff8118fd1c>]
vfs_fsync+0x1c/0x20
Apr 16 22:30:23 kenny kernel: [270720.200444] [<ffffffff8118fd5a>]
do_fsync+0x3a/0x60
Apr 16 22:30:23 kenny kernel: [270720.200447] [<ffffffff8118fff3>]
sys_fdatasync+0x13/0x20
Apr 16 22:30:23 kenny kernel: [270720.200450] [<ffffffff8100c002>]
system_call_fastpath+0x16/0x1b
Apr 16 22:30:23 kenny kernel: [270720.200453] INFO: task mythbackend:17869
blocked for more than 120 seconds.
Apr 16 22:30:23 kenny kernel: [270720.200455] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Apr 16 22:30:23 kenny kernel: [270720.200457] mythbackend D
0000000000000000 0 17869 1410 0x00000000
Apr 16 22:30:23 kenny kernel: [270720.200460] ffff8800194f3820
0000000000000086 ffff8800194f3fd8 ffff8800194f2000
Apr 16 22:30:23 kenny kernel: [270720.200464] 0000000000013d00
ffff88001072b178 ffff8800194f3fd8 0000000000013d00
Apr 16 22:30:23 kenny kernel: [270720.200467] ffff88000d0dadc0
ffff88001072adc0 ffffffff81114325 ffff88001072adc0
Apr 16 22:30:23 kenny kernel: [270720.200470] Call Trace:
Apr 16 22:30:23 kenny kernel: [270720.200473] [<ffffffff81114325>] ?
__alloc_pages_nodemask+0x125/0x840
Apr 16 22:30:23 kenny kernel: [270720.200477] [<ffffffff815c2e7d>]
rwsem_down_failed_common+0xcd/0x170
Apr 16 22:30:23 kenny kernel: [270720.200481] [<ffffffff815c2f55>]
rwsem_down_read_failed+0x15/0x17
Apr 16 22:30:23 kenny kernel: [270720.200485] [<ffffffff812e69b4>]
call_rwsem_down_read_failed+0x14/0x30
Apr 16 22:30:23 kenny kernel: [270720.200488] [<ffffffff815c2264>] ?
down_read+0x24/0x30
Apr 16 22:30:23 kenny kernel: [270720.200494] [<ffffffffa0be0f6b>]
dbAlloc+0x1bb/0x470 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200500] [<ffffffffa0be8db2>]
extBalloc+0x82/0x1c0 [jfs]
Apr 16 22:30:23 kenny kernel: [270720.200505] [<ffffffffa0be8fd4>]
extAlloc+0xe4/0x300 [jfs]
[more similar blocks repeated]
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