[mythtv-users] Re: Waited too long for ringbuffer pause

Allan McIntosh amcintosh at atreus-systems.com
Sun Jan 1 22:55:10 UTC 2006


I just noticed the following appeared in /var/log/messages at 15:32:59 
then the ringbuffer errors appear immediatly after this....

Jan  1 15:32:59 nelson kernel: ------------[ cut here ]------------
Jan  1 15:32:59 nelson kernel: kernel BUG at lib/radix-tree.c:276!
Jan  1 15:32:59 nelson kernel: invalid operand: 0000 [#1]
Jan  1 15:32:59 nelson kernel: Modules linked in: nvidia(U) cx8800 
cx88xx ir_common v4l1_compat bttv video_buf v4l2_common btcx_risc 
lirc_i2c(U) lirc_dev(U) nfsd exportfs ipv6 autofs4 nfs lockd nfs_acl 
sunrpc dm_mod video button battery ac ohci_hcd ehci_hcd tda9887 
msp3400(U) saa7115(U) tuner tveeprom ivtv(U) i2c_algo_bit videodev 
i2c_nforce2 i2c_core shpchp snd_intel8x0(U) snd_ac97_codec(U) 
snd_ac97_bus(U) snd_seq_dummy(U) snd_seq_oss(U) snd_seq_midi_event(U) 
snd_seq(U) snd_seq_device(U) snd_pcm_oss(U) snd_mixer_oss(U) snd_pcm(U) 
snd_timer(U) snd(U) soundcore snd_page_alloc(U) forcedeth floppy ext3 
jbd sata_nv libata sd_mod scsi_mod
Jan  1 15:32:59 nelson kernel: CPU:    0
Jan  1 15:32:59 nelson kernel: EIP:    0060:[<c01cf0ad>]    Tainted: 
PF     VLI
Jan  1 15:32:59 nelson kernel: EFLAGS: 00210086   (2.6.14-1.1637_FC4)
Jan  1 15:32:59 nelson kernel: EIP is at radix_tree_insert+0xd6/0x139
Jan  1 15:32:59 nelson kernel: eax: ffffffff   ebx: ef17f4e4   ecx: 
00000000   edx: 00000000
Jan  1 15:32:59 nelson kernel: esi: 00000003   edi: 00000003   ebp: 
0000000d   esp: dacfcdb4
Jan  1 15:32:59 nelson kernel: ds: 007b   es: 007b   ss: 0068
Jan  1 15:32:59 nelson kernel: Process mythfrontend (pid: 1517, 
threadinfo=dacfc000 task=c5084570)
Jan  1 15:32:59 nelson kernel: Stack: badc0ded c151c0c0 00008fcd 
d6b43e70 ef17f4e4 00000000 c151c0c0 d6b43e6c
Jan  1 15:32:59 nelson kernel:        d6b43e7c c013bb47 00008fcd 
00001000 c151c0c0 00000000 d6b43e6c c013bb9e
Jan  1 15:32:59 nelson kernel:        000000d0 00001000 00000000 
c013c44b 000000d0 00000020 00008fb2 00000000
Jan  1 15:32:59 nelson kernel: Call Trace:
Jan  1 15:32:59 nelson kernel:  [<c013bb47>] add_to_page_cache+0x41/0x83
Jan  1 15:32:59 nelson kernel:  [<c013bb9e>] add_to_page_cache_lru+0x15/0x2a
Jan  1 15:32:59 nelson kernel:  [<c013c44b>] 
do_generic_mapping_read+0x411/0x465
Jan  1 15:32:59 nelson kernel:  [<c013c628>] 
__generic_file_aio_read+0xaa/0x1f6
Jan  1 15:32:59 nelson kernel:  [<c013c49f>] file_read_actor+0x0/0xdf
Jan  1 15:32:59 nelson kernel:  [<c013c7b2>] generic_file_aio_read+0x3e/0x4f
Jan  1 15:32:59 nelson kernel:  [<c0158ac7>] do_sync_read+0xbf/0x11a
Jan  1 15:32:59 nelson kernel:  [<c01045b8>] do_IRQ+0x51/0x82
Jan  1 15:32:59 nelson kernel:  [<c012db56>] 
autoremove_wake_function+0x0/0x37
Jan  1 15:32:59 nelson kernel:  [<c0158a08>] do_sync_read+0x0/0x11a
Jan  1 15:32:59 nelson kernel:  [<c0158bc2>] vfs_read+0xa0/0x158
Jan  1 15:32:59 nelson kernel:  [<c0158f2f>] sys_read+0x41/0x6a
Jan  1 15:32:59 nelson kernel:  [<c0102edd>] syscall_call+0x7/0xb
Jan  1 15:32:59 nelson kernel: Code: 84 85 db 74 30 83 03 01 8b 04 24 89 
44 ab 04 0f a3 ab 04 01 00 00 19 c0 85 c0 75 68 0f a3 ab 0c 01 00 00 19 
c0 31 c9 85 c0 74 b1 <0f> 0b 14 01 80 cf 32 c0 eb a7 8b 0c 24 8b 54 24 
08 89 4a 08 31




> Hey,
>
> In the past couple of days mythtv-frontend-0.18.1-116.rhfc4.at has 
> locked up on me 3 or 4 times during playback of recorded shows.
> This is the first time I have seen this behaviour and each time I was 
> attempting to playback recorded movies at least 2 hours in length.. 
> The shows were recorded with ivtv4.0
>
> The only recent change is starting mythfronted from an init script at 
> boot. In an attempt to rule that out, I stopped mythbackend and 
> restarted it as my regular user and the bahaviour persisted.
>
> Any ideas?
>
> mythfrontend log:
> 2006-01-01 15:30:51.482 Opening audio device 'default'.
> 2006-01-01 15:30:51.545 Using XV port 240
> 2006-01-01 15:30:51.801 Realtime priority would require SUID as root.
> 2006-01-01 15:30:51.808 Changing from None to WatchingPreRecorded
> 2006-01-01 15:30:51.981 Video timing method: RTC
> 2006-01-01 15:33:03.431 prebuffering pause
> 2006-01-01 15:33:06.472 Waited 4 seconds for data to become available, 
> waiting again...
> 2006-01-01 15:33:10.476 Waited 4 seconds for data to become available, 
> waiting again...
> 2006-01-01 15:33:12.280 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:13.284 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:14.288 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:15.312 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:16.317 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:17.321 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:18.325 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:19.329 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:20.334 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:21.337 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:22.341 Waited too long for ringbuffer pause..
> 2006-01-01 15:33:23.345 Waited too long for ringbuffer pause..
> <snip>
>
> By this time mythfronted is unresponsive.
>
>
>



More information about the mythtv-users mailing list