My mythtv backend system became completely unresponsive last night
during a scheduled record.
My syslog is now 150M with "ENC Stream 0 OVERFLOW" messages as it was
running like this all night.
I had to reboot.
Is there anyway I can help debug this?
Does this help?
ivtv: version 0.4.0
Encoder revision: 0x02050032
kernel 2.6.14-1.1637_FC4
Dec 16 00:48:36 nelson kernel: ------------[ cut here ]------------
Dec 16 00:48:36 nelson kernel: kernel BUG at lib/radix-tree.c:276!
Dec 16 00:48:36 nelson kernel: invalid operand: 0000 [#2]
Dec 16 00:48:36 nelson kernel: Modules linked in: parport_pc lp parport
rfcomm l2cap bluetooth nvidia(U) cx8800 cx
88xx 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 tve
eprom 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_m
od
Dec 16 00:48:36 nelson kernel: CPU: 0
Dec 16 00:48:36 nelson kernel: EIP: 0060:[<c01cf0ad>] Tainted:
PF VLI
Dec 16 00:48:36 nelson kernel: EFLAGS: 00010086 (2.6.14-1.1637_FC4)
Dec 16 00:48:36 nelson kernel: EIP is at radix_tree_insert+0xd6/0x139
Dec 16 00:48:36 nelson kernel: eax: ffffffff ebx: ede674e4 ecx:
00000000 edx: 00000000
Dec 16 00:48:36 nelson kernel: esi: 00000004 edi: 00000004 ebp:
0000000d esp: d1fd5d68
Dec 16 00:48:36 nelson kernel: ds: 007b es: 007b ss: 0068
Dec 16 00:48:36 nelson kernel: Process mythbackend (pid: 13182,
threadinfo=d1fd5000 task=c1a34570)
Dec 16 00:48:36 nelson kernel: Stack: badc0ded c12b3760 0009184d
e14d26c4 ede674e4 00000000 c12b3760 e14d26c0
Dec 16 00:48:36 nelson kernel: e14d26d0 c013bb47 0009184d
00000000 00000000 0009184d e14d26c0 c013d813
Dec 16 00:48:36 nelson kernel: 000000d0 00000001 d1fd5efc
00000001 00001000 d535b540 f88d3fe0 e14d25f0
Dec 16 00:48:36 nelson kernel: Call Trace:
Dec 16 00:48:36 nelson kernel: [<c013bb47>] add_to_page_cache+0x41/0x83
Dec 16 00:48:36 nelson kernel: [<c013d813>]
generic_file_buffered_write+0x121/0x616
Dec 16 00:48:36 nelson kernel: [<c013df75>]
__generic_file_aio_write_nolock+0x26d/0x476
Dec 16 00:48:36 nelson kernel: [<c013e3cc>]
generic_file_aio_write+0x76/0xe3
Dec 16 00:48:36 nelson kernel: [<f88b71b1>] ext3_file_write+0x24/0x96
[ext3]
Dec 16 00:48:36 nelson kernel: [<c0158d39>] do_sync_write+0xbf/0x11a
Dec 16 00:48:36 nelson kernel: [<c030cb5e>] _read_unlock_irq+0x5/0x7
Dec 16 00:48:36 nelson kernel: [<c013bf85>] find_get_pages_tag+0x47/0x91
Dec 16 00:48:36 nelson kernel: [<c012db56>]
autoremove_wake_function+0x0/0x37
Dec 16 00:48:36 nelson kernel: [<c0158c7a>] do_sync_write+0x0/0x11a
Dec 16 00:48:36 nelson kernel: [<c0158e36>] vfs_write+0xa2/0x15a
Dec 16 00:48:36 nelson kernel: [<c0158f99>] sys_write+0x41/0x6a
Dec 16 00:48:36 nelson kernel: [<c0102edd>] syscall_call+0x7/0xb
Dec 16 00:48:36 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
Dec 16 00:48:48 nelson kernel: <6>ivtv0 warning: ENC Stream 0 OVERFLOW
#0: Stealing a Buffer, 512 currently alloc
ated
:
<snip>
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