[linux-dvb] kernel bug in when switching DVB outputs

Simon Baxter linuxtv at nzbaxters.com
Sun Dec 23 09:57:12 CET 2007

Can't see any other reference to this yet, but I keep getting a kernel bug 
and lock up when switching between vdr-xine output device and the output of 
my TT-2300C

------------[ cut here ]------------
kernel BUG at mm/vmalloc.c:348!
invalid opcode: 0000 [#1] SMP
Modules linked in: via drm ledxmit_serial(U) ledxmit_dev(U) rfcomm l2cap 
bluetooth autofs4 nfs lockd nfs_acl sunrpc ipv6 dm_mirror dm_multipath 
dm_mod snd_via82xx gameport stv0297 snd_ac97_codec ac97_bus snd_seq_dummy 
snd_seq_oss snd_seq_midi_event snd_seq snd_pcm_oss snd_mixer_oss snd_pcm 
dvb_ttpci dvb_core snd_timer parport_pc snd_page_alloc saa7146_vv parport 
snd_mpu401_uart video_buf snd_rawmidi saa7146 snd_seq_device videodev 
v4l2_common snd v4l1_compat button via_rhine i2c_viapro ttpci_eeprom 
soundcore pcspkr mii firewire_ohci i2c_core firewire_core crc_itu_t sg 
sr_mod cdrom pata_via ata_generic sata_via libata sd_mod scsi_mod ext3 jbd 
mbcache uhci_hcd ohci_hcd ehci_hcd
CPU:    0
EIP:    0060:[<c04747c0>]    Not tainted VLI
EFLAGS: 00210246   ( #1)
EIP is at __vunmap+0xa9/0xe3
eax: 00000000   ebx: 00000000   ecx: 2cba3000   edx: 00000001
esi: e7e491c0   edi: 00000001   ebp: f7d7c3d0   esp: ea566f28
ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
Process vdr (pid: 2500, ti=ea566000 task=eabdc610 task.ti=ea566000)
Stack: f89b23ac f8ace9e0 f89bc3d0 f89b23ac f7d7c38c f89b23ac f7d7c38c 
       f89bace2 00200246 e8365780 f89b2420 00000008 e8365780 c191dbb0 
       c0481eda 00000000 00000000 c191dbb0 c1bd1800 f7ef2ae0 e8365780 
Call Trace:
 [<f89bc3d0>] dvbdmx_release_ts_feed+0x78/0x7e [dvb_core]
 [<f89bace2>] dvb_demux_release+0x8d/0x148 [dvb_core]
 [<c0481eda>] __fput+0xbb/0x171
 [<c047f84d>] filp_close+0x51/0x58
 [<c04808de>] sys_close+0x6e/0xa5
 [<c040518a>] syscall_call+0x7/0xb
Code: 6b c0 c7 04 24 2b 8d 6a c0 e8 5c 97 fb ff 83 c4 14 5b 5e 5f e9 e0 24 
f9 ff 31 db 85 ff 75 18 eb 30 8b 46 10 8b 04 98 85 c0 75 04 <0f> 0b eb fe 31 
d2 43 e8 d5 1a ff ff 3b 5e 14 72 e5 f6 46 0c 10
EIP: [<c04747c0>] __vunmap+0xa9/0xe3 SS:ESP 0068:ea566f28

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