[linux-dvb] kernel crashes after accessing DVB-Device

[Fabian Wolter <email@fabian-wolter.de>]

Hi,

i've bought a Technotrend DVB-S Budget S1102 card for my only-recording-vdr.

While I'm loading the DVB-drivers with

eis 1.0.5 # modprobe stv0299
eis 1.0.5 # modprobe dvb-ttpci

I get these messages in the syslog:

May 19 22:38:11 eis kernel: DVB: registering new adapter 
(TT-Budget/WinTV-NOVA-CI PCI).
May 19 22:38:11 eis kernel: stv0299.c: setup for tuner SU1278/SH
May 19 22:38:11 eis kernel: DVB: registering frontend 0:0 
(STV0299/TSA5059/SL1935 based)...
May 19 22:38:12 eis kernel: mt312_read: ret == -121
May 19 22:38:12 eis kernel: TT-Budget/WinTV-NOVA-CI PCI adapter 0 has 
MAC addr = 00:d0:5c:02:b5:bd

But when I access the DVB-Device, e.g. with vdr(last message by vdr in 
syslog: "probing /dev/dvb/adapter0/frontend0")  or 'scan' (seg faults) I 
get the following errors in the syslog:

May 19 22:40:18 eis kernel: invalid operand: 0000
May 19 22:40:18 eis kernel: CPU:    0
May 19 22:40:18 eis kernel: EIP:    0010:[<ce8e9ade>]    Not tainted
May 19 22:40:18 eis kernel: EFLAGS: 00010283
May 19 22:40:18 eis kernel: eax: 01a39de0   ebx: c97de860   ecx: 
c933b438   edx: 053ec600
May 19 22:40:18 eis kernel: esi: 40246f4c   edi: c97de860   ebp: 
00000000   esp: c4569e20
May 19 22:40:18 eis kernel: ds: 0018   es: 0018   ss: 0018
May 19 22:40:18 eis kernel: Process scan (pid: 946, stackpage=c4569000)
May 19 22:40:18 eis kernel: Stack: c97de860 40246f4c c4569efc 00000000 
b4510031 ce8e9f6e c97de860 01a39de0
May 19 22:40:18 eis kernel:        c97de860 00000003 c97de860 001d9638 
00000000 ffffffa1 ca146804 c4569efc
May 19 22:40:18 eis kernel:        40246f4c 00006f42 ce8ea0a7 ce8dd66c 
ca146804 40246f4c c4569efc ca146800
May 19 22:40:18 eis kernel: Call Trace:    [<ce8e9f6e>] [<ce8ea0a7>] 
[<ce8dd66c>] [<ce8ddc3c>] [<ce8de333>]
May 19 22:40:18 eis kernel:   [<ce8df343>] [<c0113210>] [<c011433d>] 
[<c0114040>] [<ce8dee7d>] [<ce8de234>]
May 19 22:40:18 eis kernel:   [<c013ff27>] [<c0108843>]
May 19 22:40:18 eis kernel:
May 19 22:40:18 eis kernel: Code: 0f 46 54 24 1c b8 20 a1 07 00 81 fa 1f 
a1 07 00 0f 46 d0 81

And when I access the DVB-Device the second time I get those error messages:

eis 1.0.5 # ./scan Hotbird-13.0E
scanning Hotbird-13.0E
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
main:1819: FATAL: failed to open '/dev/dvb/adapter0/frontend0': 16 
Device or resource busy

After the first access I can't rmmod dvb-core ("Device or resource 
busy"). All other DVB-Modules I'm able to rmmod.

Perhaps it's due to this proccess (which I can't kill):

eis 1.0.5 # ps ax | grep dvb
947 ?        SW     0:00 [kdvb-fe-0:0]

Regards Fabian


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