Ooops in 2.0.33

Patrick D. Wildi (patrick@wildi.com)
Tue, 10 Mar 1998 12:16:42 -0800


I got the following Oops:

Mar 9 17:12:59 bryce kernel: Unable to handle kernel paging
request at virtual address c4000000
Mar 9 17:12:59 bryce kernel: current->tss.cr3 = 00822000,
^Lr3 = 00822000
Mar 9 17:12:59 bryce kernel: *pde = 00000000
Mar 9 17:12:59 bryce kernel: Oops: 0000
Mar 9 17:12:59 bryce kernel: CPU: 0
Mar 9 17:13:00 bryce kernel: EIP: 0010:[<0480d0bb>]
Mar 9 17:13:00 bryce kernel: EFLAGS: 00010246
Mar 9 17:13:00 bryce kernel: eax: 00000000 ebx:
00946e6c ecx: 00000005 edx: 04000000
Mar 9 17:13:00 bryce kernel: esi: 04000000 edi:
0480d800 ebp: 001ea9c4 esp: 00946e24
Mar 9 17:13:00 bryce kernel: ds: 0018 es: 0018 fs:
002b gs: 002b ss: 0018
Mar 9 17:13:00 bryce kernel: Process diald (pid: 99,
process nr: 20, stackpage=00946000)
Mar 9 17:13:00 bryce kernel: Stack: 02f07098 00946f3c
01e35974 0041e098 00000246 001fc0c0 00000001 03fe7f9a
Mar 9 17:13:00 bryce kernel: 00946e70 03f6c554
00000000 0000010d 001c4c6 03f6c500 03f6c500 04156ed6
Mar 9 17:13:00 bryce kernel: 03fe7f9a 03f6c554
04000000 03f60000 03f6c501 00000000 00000201 001c0001
Mar 9 17:13:00 bryce kernel: Call Trace: [scan_bus+701/820]
[ip_masq_app_pkt_out+178/236] [ip_fw_masquerade+841/1260]
[ip_fw_masquerade+1002/1260] [ip_forward+702/1920]
[ip_rcv+1261/1380] [__skb_unlink+46/88]
Mar 9 17:13:00 bryce kernel: [net_bh+232/264]
[do_bottom_half+59/96] [handle_bottom_half+11/32]
Mar 9 17:13:00 bryce kernel: Code: f3 a6 74 1d 89 d6 bf 06
d8 80 04 b9 05 00 00 00 fc a8 00 f3
Mar 9 17:13:00 bryce kernel: Aiee, killing interrupt
handler

ksymoops produced:
Code:
Code: f3 a6 repz cmpsb %ds:(%esi),%es:(%edi)
Code: 74 1d je 21 <_EIP+21>
Code: 89 d6 movl %edx,%esi
Code: bf 06 d8 80 04 movl $0x480d806,%edi
Code: b9 05 00 00 00 movl $0x5,%ecx
Code: fc cld
Code: a8 00 testb $0x0,%al

I am one of the people experiencing spontaneous reboots. I
have no idea if this oops is
in any way connected to it.
My setup is: Pentium II, 64 M RAM, Adaptec AIC-7880 Ultra
SCSI, 2 4 GB WD SCSI HD,
NEC SCSI CD-ROM, SCSI tape drive, 3Com 3c905 Boomerang
The kernel is a 2.0.33 with the following patches:
aic7xxx-5.0.7, 3c59x.c:v0.49J, and
Alan's tcp-debug patch.

The machine has two main functions:
- file server via samba (1.9.18p3) for a couple of Win95
machines
- network connectivity for internal (10BaseT) LAN to
Internet via
PPP (2.3.3) and diald (0.16.5) with an external Courier
modem
using masquerading

To my amateur eyes it looks like the masquerading code was
involved in the oops.
The machine stayed up afterwards, but diald died. As I
wasn't able to be on site
I had to have the machine rebooted without getting more
information.

Patrick

-------------------------------------------------------------------
Patrick D. Wildi patrick@wildi.com
http://www.wildi.com/

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