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Subject[2.5.63] Oops bttv related
This is with vanilla 2.5.63, with no module support. Just launching
zapping (a tv app like xawtv) under a fresh XFree86 4.3.0. The tv card
is an Avermedia TV Capture 98 and the video card is a NVIDIA Geforce4 Ti
4200. This setup works fine with 2.4.20 + alsa + acpi-20021212 patches.

After the oops, X just crash and reboot. Launching zapping again just
show a pink screen.

I'm not subscribed to linux-kernel, CC any replies to me.

# ksymoops < oops-bttv.txt
ksymoops 2.4.5 on i686 2.5.63. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.5.63/ (default)
-m /boot/ (default)

Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.

Error (regular_file): read_ksyms stat /proc/ksyms failed
ksymoops: No such file or directory
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
kernel BUG at drivers/media/video/bttv-risc.c:846!
invalid operand: 0000
CPU: 0
EIP: 0060:[<c02673b1>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00013293
eax: 00000000 ebx: decc94e0 ecx: 00000000 edx: 00000020
esi: dfd4e760 edi: c03509a4 ebp: c0425780 esp: de3bdd90
ds: 007b es: 007b ss: 0068
Stack: c0425780 dfd4e7d8 00000140 000000f0 00000000 00000000 decc940c
de3bdeec c0425780 c025f24f c0425780 decc94e0 c03509a4 dfd4e760
000003e2 decc9400 decc940c 00000001 00000001 de3bc000 de3b0004
Call Trace: [<c025f24f>] [<c026ece1>] [<c033ccfc>] [<c0132921>]
[<c0131491>] [<c01499ec>] [<c0259be4>] [<c0116a3c>] [<c013e902>]
[<c026063e>] [<c025eea0>] [<c015b0db>] [<c01095cf>]
Code: 0f 0b 4e 03 80 cc 37 c0 8b 47 0c 89 46 70 8b 47 10 89 46 74

>>EIP; c02673b1 <bttv_overlay_risc+71/160> <=====

>>ebx; decc94e0 <END_OF_CODE+1e895308/????>
>>esi; dfd4e760 <END_OF_CODE+1f91a588/????>
>>edi; c03509a4 <bttv_formats+144/2ac>
>>ebp; c0425780 <bttvs+0/1620>
>>esp; de3bdd90 <END_OF_CODE+1df89bb8/????>

Trace; c025f24f <bttv_do_ioctl+3af/1760>
Trace; c026ece1 <tuner_command+121/240>
Trace; c033ccfc <unix_stream_recvmsg+10c/360>
Trace; c0132921 <buffered_rmqueue+b1/150>
Trace; c0131491 <generic_file_aio_write+71/90>
Trace; c01499ec <do_sync_write+8c/c0>
Trace; c0259be4 <video_usercopy+c4/1a0>
Trace; c0116a3c <do_page_fault+23c/45e>
Trace; c013e902 <do_brk+142/220>
Trace; c026063e <bttv_ioctl+3e/70>
Trace; c025eea0 <bttv_do_ioctl+0/1760>
Trace; c015b0db <sys_ioctl+bb/240>
Trace; c01095cf <syscall_call+7/b>

Code; c02673b1 <bttv_overlay_risc+71/160>
00000000 <_EIP>:
Code; c02673b1 <bttv_overlay_risc+71/160> <=====
0: 0f 0b ud2a <=====
Code; c02673b3 <bttv_overlay_risc+73/160>
2: 4e dec %esi
Code; c02673b4 <bttv_overlay_risc+74/160>
3: 03 80 cc 37 c0 8b add 0x8bc037cc(%eax),%eax
Code; c02673ba <bttv_overlay_risc+7a/160>
9: 47 inc %edi
Code; c02673bb <bttv_overlay_risc+7b/160>
a: 0c 89 or $0x89,%al
Code; c02673bd <bttv_overlay_risc+7d/160>
c: 46 inc %esi
Code; c02673be <bttv_overlay_risc+7e/160>
d: 70 8b jo ffffff9a <_EIP+0xffffff9a>
Code; c02673c0 <bttv_overlay_risc+80/160>
f: 47 inc %edi
Code; c02673c1 <bttv_overlay_risc+81/160>
10: 10 89 46 74 00 00 adc %cl,0x7446(%ecx)

1 warning and 1 error issued. Results may not be reliable.

Alfredo Sanjuan <>
IBD Internet

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