[linux-dvb] CVS MythTV and DEC2000-t kernel panic: oops dump included

[Des Herriott <Des.Herriott@oracle.com>]

Here's the problem I mailed about a few days ago.  Got a bit more info 
now.  Basically, this happens every time I try to watch live TV with 
mythtv (i.e. as soon as I press the "Watch TV" button) - it's triggering 
a panic in the DEC2000-t driver.  It also panics when mythbackend starts 
a scheduled recording.

I've also seen it happen with other kernel versions: 2.4.23 and 
2.6.0-mm2 (with all the dvb-kernel patches).

Interestingly, it only started happening when I upgraded to the latest 
MythTV CVS code last weekend (and I hadn't changed dvb-kernel version). 
 I don't know what changed in MythTV regarding DVB (my email to the 
myth-users list didn't get a response), but something's obviously 
tickled a bug somewhere...

Cheers!
Des.


ksymoops 2.4.9 on i686 2.4.24-epia.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.24-epia/ (default)
     -m /usr/src/linux/System.map (specified)

Oops: 0000
CPU:    0
EIP:    0010:[<de9bd73b>]    Tainted: P
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286
eax: dea3e000   ebx: 00000000   ecx: 00000000   edx: dea3e000
esi: da5ea8c4   edi: 000000bc   ebp: d6479e58   esp: d6479e30
ds: 0018   es: 0018   ss: 0018
Process mythbackend (pid: 2091, stackpage=d6479000)
Stack: 000000b0 d6479e9c d6479e9c 00000003 00000092 00000082 d7284680 
da5ea8c4
       00000000 da5ea8c8 d6479e78 de9c14a4 da5ea8c4 000000bc 00000000 
00000000
       dea3e000 00000000 d6479e9c de9b7843 dea3e000 da5ea8c4 000000b8 
dd268800
Call Trace:    [<de9c14a4>] [<de9b7843>] [<de9c16cc>] [<de9678f5>] 
[<de9c1aa6>]
  [<de9c1d95>] [<de9c1e43>] [<c011e446>] [<c011e2e5>] [<c010a9ba>] 
[<c010cf18>]
  [<c0108470>] [<c0109293>]
Code: 8b 43 6c 85 c0 75 5e 83 7b 4c 03 74 0f 8b 5d f4 31 c0 8b 75


>>EIP; de9bd73b <[dmxdev]dvb_dmxdev_section_callback+1b/100>   <=====

>>eax; dea3e000 <[ide-scsi]idescsi_drives+4760/d97c0>
>>edx; dea3e000 <[ide-scsi]idescsi_drives+4760/d97c0>
>>esi; da5ea8c4 <_end+1a21a638/1e58cdd4>
>>ebp; d6479e58 <_end+160a9bcc/1e58cdd4>
>>esp; d6479e30 <_end+160a9ba4/1e58cdd4>

Trace; de9c14a4 <[ttusb_dec]ttusb_dec_av_pes2ts_cb+34/40>
Trace; de9b7843 <[dvb-core]dvb_filter_pes2ts+73/140>
Trace; de9c16cc <[ttusb_dec]ttusb_dec_process_av_pes+9c/320>
Trace; de9678f5 <[usb-uhci]delete_desc+25/30>
Trace; de9c1aa6 <[ttusb_dec]ttusb_dec_process_packet+c6/f0>
Trace; de9c1d95 <[ttusb_dec]ttusb_dec_process_urb_frame+285/2d0>
Trace; de9c1e43 <[ttusb_dec]ttusb_dec_process_urb_frame_list+63/80>
Trace; c011e446 <tasklet_action+46/70>
Trace; c011e2e5 <do_softirq+a5/b0>
Trace; c010a9ba <do_IRQ+ba/e0>
Trace; c010cf18 <call_do_IRQ+5/d>
Trace; c0108470 <sys_sigreturn+0/100>
Trace; c0109293 <system_call+33/40>

Code;  de9bd73b <[dmxdev]dvb_dmxdev_section_callback+1b/100>
00000000 <_EIP>:
Code;  de9bd73b <[dmxdev]dvb_dmxdev_section_callback+1b/100>   <=====
   0:   8b 43 6c                  mov    0x6c(%ebx),%eax   <=====
Code;  de9bd73e <[dmxdev]dvb_dmxdev_section_callback+1e/100>
   3:   85 c0                     test   %eax,%eax
Code;  de9bd740 <[dmxdev]dvb_dmxdev_section_callback+20/100>
   5:   75 5e                     jne    65 <_EIP+0x65>
Code;  de9bd742 <[dmxdev]dvb_dmxdev_section_callback+22/100>
   7:   83 7b 4c 03               cmpl   $0x3,0x4c(%ebx)
Code;  de9bd746 <[dmxdev]dvb_dmxdev_section_callback+26/100>
   b:   74 0f                     je     1c <_EIP+0x1c>
Code;  de9bd748 <[dmxdev]dvb_dmxdev_section_callback+28/100>
   d:   8b 5d f4                  mov    0xfffffff4(%ebp),%ebx
Code;  de9bd74b <[dmxdev]dvb_dmxdev_section_callback+2b/100>
  10:   31 c0                     xor    %eax,%eax
Code;  de9bd74d <[dmxdev]dvb_dmxdev_section_callback+2d/100>
  12:   8b 75 00                  mov    0x0(%ebp),%esi

 <0>Kernel panic: Aiee, killing interrupt handler!

--
Des Herriott
des.herriott@oracle.com



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