Gerd Knorr wrote:
>
> On Mon, Jun 25, 2001 at 12:56:03PM +0200, Udo A. Steinberg wrote:
> >
> > Hello,
> >
> > Attached is the trace of an oops which seems to be caused by the
> > tvmixer code. Tvmixer is compiled monolithically into the kernel,
> > the rest of bttv is compiled as modules.
>
> Any hints on how to reproduce that one?
I just got another one, however I still cannot reliably reproduce it.
Regards,
Udo.
ksymoops 2.4.1 on i686 2.4.5-ac18. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.5-ac18/ (default)
-m /boot/System.map-2.4.5-ac18 (specified)
Unable to handle kernel NULL pointer dereference at virtual address 0000002c
c01b8faa
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c01b8faa>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010282
eax: 00000000 ebx: ccb16980 ecx: 00000010 edx: 00000000
esi: c02f7fc0 edi: 00000000 ebp: 00000010 esp: cf351ef4
ds: 0018 es: 0018 ss: 0018
Process rat-4.2.19-medi (pid: 5876, stackpage=cf351000)
Stack: c028b580 00000000 c01cfa68 c5c0dc40 c85162c0 00000000 c85162c0 c5c0dc40
c14a82c0 c028ab60 c85162c0 c5c0dc40 c14a82c0 c5c0dc40 ffffffeb 00000002
c013900a c5c0dc40 c012febe c5c0dc40 c85162c0 c85162c0 c5c0dc40 00000000
Call Trace: [<c01cfa68>] [<c013900a>] [<c012febe>] [<c012ef5d>] [<c012ee92>]
[<c012f186>] [<c0106bfb>]
Code: 83 78 2c 00 74 09 50 8b 40 2c ff d0 83 c4 04 31 c0 5b 5e c3
>>EIP; c01b8faa <tvmixer_open+5a/70> <=====
Trace; c01cfa68 <soundcore_open+108/190>
Trace; c013900a <permission+2a/30>
Trace; c012febe <chrdev_open+3e/50>
Trace; c012ef5d <dentry_open+bd/140>
Trace; c012ee92 <filp_open+52/60>
Trace; c012f186 <sys_open+36/a0>
Trace; c0106bfb <system_call+33/38>
Code; c01b8faa <tvmixer_open+5a/70>
00000000 <_EIP>:
Code; c01b8faa <tvmixer_open+5a/70> <=====
0: 83 78 2c 00 cmpl $0x0,0x2c(%eax) <=====
Code; c01b8fae <tvmixer_open+5e/70>
4: 74 09 je f <_EIP+0xf> c01b8fb9 <tvmixer_open+69/70>
Code; c01b8fb0 <tvmixer_open+60/70>
6: 50 push %eax
Code; c01b8fb1 <tvmixer_open+61/70>
7: 8b 40 2c mov 0x2c(%eax),%eax
Code; c01b8fb4 <tvmixer_open+64/70>
a: ff d0 call *%eax
Code; c01b8fb6 <tvmixer_open+66/70>
c: 83 c4 04 add $0x4,%esp
Code; c01b8fb9 <tvmixer_open+69/70>
f: 31 c0 xor %eax,%eax
Code; c01b8fbb <tvmixer_open+6b/70>
11: 5b pop %ebx
Code; c01b8fbc <tvmixer_open+6c/70>
12: 5e pop %esi
Code; c01b8fbd <tvmixer_open+6d/70>
13: c3 ret
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