by Hi there
Since upgrading to 2.4.19-pre3-ac3, I get this problem when accessing my
soundcard (an Sb Live). 2.4.19-pre3-ac1 also had this problem, but 2.4.17 (my
previous kernel) didn't.
The snippet of code (I think) that is triggering the bug call is this:
buffer->numfrags = buffer->size / buffer->fragment_size;
buffer->pages = buffer->size / PAGE_SIZE + ((buffer->size % PAGE_SIZE) ? 1 : 0);
if (buffer->size % buffer->fragment_size)
BUG();
...from ./drivers/sound/emu10k1/audio.c . What I'm doing when this occurs is
attempting to set the soundcard input channels up and read from them.
Please let me know if you need more information
Thanks
Sean
kernel BUG at audio.c:1474!
invalid operand: 0000
CPU: 0
EIP: 0010:[<c0207295>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010082
eax: 0000001c ebx: dfe593c8 ecx: c02ed640 edx: 000034a8
esi: 00000002 edi: 00000007 ebp: 0000ffff esp: dcf09f2c
ds: 0018 es: 0018 ss: 0018
Process aed (pid: 1465, stackpage=dcf09000)
Stack: c02c65c7 000005c2 00018000 0001c000 00010000 00014000 00000246 dfe59380
dcf08000 00002000 c0204c70 dfe59380 00000800 00000000 df1056c0 0000ac44
00000000 dd26ee60 ffffffea 00002000 c013e756 dd26ee60 bfffd5b0 00002000
Call Trace: [<c0204c70>] [<c013e756>] [<c014def3>] [<c010708b>]
Code: 0f 0b 5a 59 83 c4 10 5b 5e 5f 5d c3 eb 0d 90 90 90 90 90 90
Trace; c0204c70 <ahc_init+f20/10d0>Quote:>>EIP; c0207295 <ahc_rem_wscb+135/1c0> <=====
>>ebx; dfe593c8 <END_OF_CODE+1fa25a2c/????>
>>ecx; c02ed640 <quota_versions+63ec/11dbc>
>>edx; 000034a8 Before first symbol
>>ebp; 0000ffff Before first symbol
>>esp; dcf09f2c <END_OF_CODE+1cad6590/????>
Trace; c013e756 <do_readv_writev+76/300>
Trace; c014def3 <dcache_readdir+113/150>
Trace; c010708b <system_call+33/38>
Code; c0207295 <ahc_rem_wscb+135/1c0>
00000000 <_EIP>:
Code; c0207295 <ahc_rem_wscb+135/1c0> <=====
0: 0f 0b ud2a <=====
Code; c0207297 <ahc_rem_wscb+137/1c0>
2: 5a pop %edx
Code; c0207298 <ahc_rem_wscb+138/1c0>
3: 59 pop %ecx
Code; c0207299 <ahc_rem_wscb+139/1c0>
4: 83 c4 10 add $0x10,%esp
Code; c020729c <ahc_rem_wscb+13c/1c0>
7: 5b pop %ebx
Code; c020729d <ahc_rem_wscb+13d/1c0>
8: 5e pop %esi
Code; c020729e <ahc_rem_wscb+13e/1c0>
9: 5f pop %edi
Code; c020729f <ahc_rem_wscb+13f/1c0>
a: 5d pop %ebp
Code; c02072a0 <ahc_rem_wscb+140/1c0>
b: c3 ret
Code; c02072a1 <ahc_rem_wscb+141/1c0>
c: eb 0d jmp 1b <_EIP+0x1b> c02072b0 <ahc_rem_wscb+150/1c0>
Code; c02072a3 <ahc_rem_wscb+143/1c0>
e: 90 nop
Code; c02072a4 <ahc_rem_wscb+144/1c0>
f: 90 nop
Code; c02072a5 <ahc_rem_wscb+145/1c0>
10: 90 nop
Code; c02072a6 <ahc_rem_wscb+146/1c0>
11: 90 nop
Code; c02072a7 <ahc_rem_wscb+147/1c0>
12: 90 nop
Code; c02072a8 <ahc_rem_wscb+148/1c0>
13: 90 nop
-
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