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SubjectRe: 2.4.0-test10 Oops
On Tue, Nov 07, 2000 at 02:19:05PM +1100, Keith Owens wrote:
> On Mon, 6 Nov 2000 23:03:44 +0100,
> Frank van Maarseveen <F.vanMaarseveen@inter.NL.net> wrote:
> >First a firewall is installed (ppp0). Starting the network (eth0/lo only. ppp0 is
> >nonexistent at this point) gives the following Oops:
>
> klogd has tried to convert the addresses and got it completely wrong,
> leaving nothing useful for ksymoops. Change /etc/rc.d/init.d/syslog to
> run klogd as "klogd -x", restart klogd, reproduce the problem and run
> the result through ksymoops.
Bingo.

ksymoops 2.3.3 on i686 2.4.0-test10-x23. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.0-test10-x23/ (default)
-m /boot/System.map-2.4.0-test10-x23 (specified)

Nov 7 20:50:06 iapetus kernel: ac97_codec: AC97 Audio codec, id: 0x5452:0x4102 (Unknown)
Nov 7 20:50:17 iapetus kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000070
Nov 7 20:50:17 iapetus kernel: c68385ab
Nov 7 20:50:17 iapetus kernel: *pde = 00000000
Nov 7 20:50:17 iapetus kernel: Oops: 0002
Nov 7 20:50:17 iapetus kernel: CPU: 1
Nov 7 20:50:17 iapetus kernel: EIP: 0010:[<c68385ab>]
Using defaults from ksymoops -t elf32-i386 -a i386
Nov 7 20:50:17 iapetus kernel: EFLAGS: 00010202
Nov 7 20:50:17 iapetus kernel: eax: 00000000 ebx: 00000070 ecx: 00006d50 edx: 21045000
Nov 7 20:50:17 iapetus kernel: esi: 00000000 edi: 00000000 ebp: 00000300 esp: c35adee4
Nov 7 20:50:17 iapetus kernel: ds: 0018 es: 0018 ss: 0018
Nov 7 20:50:17 iapetus kernel: Process modprobe (pid: 322, stackpage=c35ad000)
Nov 7 20:50:17 iapetus kernel: Stack: 00000000 00000000 00000000 ffffffea c027ae58 00000000 ffffffea c027ac80
Nov 7 20:50:17 iapetus kernel: 0000257c 00000100 00000003 0000000a 51ff0000 00000000 ffffffea c1044010
Nov 7 20:50:17 iapetus kernel: c027ac8c 21045000 ffff0499 c683935b 00000000 c6838000 00000000 c0119f1f
Nov 7 20:50:17 iapetus kernel: Call Trace: [<ffff0499>] [<c683935b>] [<c6838000>] [<c0119f1f>] [<c6838048>] [<c684f000>] [<c6838048>]
Nov 7 20:50:17 iapetus kernel: [<c010a7db>]
Nov 7 20:50:17 iapetus kernel: Code: 89 50 70 8b 54 24 48 66 89 53 04 89 68 20 8b 54 24 2c 89 50

>>EIP; c68385ab <[3c509].text.start+54b/6e8> <=====
Trace; ffff0499 <END_OF_CODE+397a0da2/????>
Trace; c683935b <[3c509]init_module+57/74>
Trace; c6838000 <[iptable_filter].data.end+19dd/1a3d>
Trace; c0119f1f <sys_init_module+477/52c>
Trace; c6838048 <[iptable_filter].data.end+1a25/1a3d>
Trace; c684f000 <[ipt_REJECT]__module_kernel_version+0/60>
Trace; c6838048 <[iptable_filter].data.end+1a25/1a3d>
Trace; c010a7db <system_call+33/38>
Code; c68385ab <[3c509].text.start+54b/6e8>
00000000 <_EIP>:
Code; c68385ab <[3c509].text.start+54b/6e8> <=====
0: 89 50 70 movl %edx,0x70(%eax) <=====
Code; c68385ae <[3c509].text.start+54e/6e8>
3: 8b 54 24 48 movl 0x48(%esp,1),%edx
Code; c68385b2 <[3c509].text.start+552/6e8>
7: 66 89 53 04 movw %dx,0x4(%ebx)
Code; c68385b6 <[3c509].text.start+556/6e8>
b: 89 68 20 movl %ebp,0x20(%eax)
Code; c68385b9 <[3c509].text.start+559/6e8>
e: 8b 54 24 2c movl 0x2c(%esp,1),%edx
Code; c68385bd <[3c509].text.start+55d/6e8>
12: 89 50 00 movl %edx,0x0(%eax)

lsmod just after the oops is a further confirmation:
Module Size Used by
3c509 7408 1 (initializing)
ipt_REJECT 2048 2 (autoclean)
ipt_LOG 3344 7 (autoclean)
ipt_state 816 2 (autoclean)
ip_conntrack 22368 1 (autoclean) [ipt_state]
iptable_filter 1872 0 (unused)
ip_tables 13120 4 [ipt_REJECT ipt_LOG ipt_state iptable_filter]
es1371 29904 0 (autoclean)
ac97_codec 7760 0 (autoclean) [es1371]

--
Frank
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