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SubjectOops in 2.3.18 (probably ppp_deflate)
I got Oops in 2.3.18 -- unfortunately it didn't come through to logs, so
I must rely on my notes (probably I made some mistakes).

I was playing with netfilter's ip_nat rules, but that probably didnt'
trigger the oops. Most probably it's connected with ppp_deflate (as
ksymoops suggests) -- ppp connection was active during that time.

This is this oops after being processed by ksymoops:

ksymoops 0.7c on i586 2.3.18. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.3.18/ (default)
-m /boot/System.map-2.3.18 (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_system_map stat /boot/System.map-2.3.18 failed
Warning (compare_ksyms_lsmod): module bsd_comp is in lsmod but not in ksyms, probably no symbols exported
Warning (compare_ksyms_lsmod): module ipt_LOG is in lsmod but not in ksyms, probably no symbols exported
Warning (compare_ksyms_lsmod): module ipt_tcp is in lsmod but not in ksyms, probably no symbols exported
Warning (compare_ksyms_lsmod): module ipt_udp is in lsmod but not in ksyms, probably no symbols exported
Warning (compare_ksyms_lsmod): module nfsd is in lsmod but not in ksyms, probably no symbols exported
Warning (compare_ksyms_lsmod): module parport_pc is in lsmod but not in ksyms, probably no symbols exported
Warning (compare_ksyms_lsmod): module smc-ultra is in lsmod but not in ksyms, probably no symbols exported
Oops: 0002
CPU: 0
EIP: 0010:[<c48c248a>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010002
eax: 00000000 ebx: c33c8c80 ecx: c33c8d04 edx: 00000000
esi: 00000000 edi: 00000001 ebp: c01d3e8c esp: c01d3e94
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c01d3000)
Stack: c33c8c80 c0e5f988 c01fa424 00000286 c0e5f988 c0188c9a
c0e5f000 c0e5f76c c0e5f36c c01d3edc c48be74f c33c8c80
4167d000 00000000 00000001 c0e5f76f c0e5f36f c01d3efc
c48be72a c33c8c80 00000000 c3e73540 00000082
Call Trace: [<c0188c9a>] [<c48be74f>] [<c48be72a>] [<c48be701>]
[<c48be754>] [<c01843ee>] [<c48be76a>] [<c010fa6b>]
[<c010e71e>] [<c010e737>] [<c010fd90>] [<c011684e>]
[<c0108c54>] [<c0106000>] [<c0107d9c>] [<c0106000>]
[<c01061e4>] [<c0106000>] [<c0100176>]
Code: 89 50 04 89 02 c9 c3 8d 76 00 55 89 e5 83 ec 18 8b 4d 0c 86
>>EIP; c48c248a <ppp_deflate_draft+58ca/????> <=====
Trace; c0188c9a <tty_unregister_driver+1592/2638>
Trace; c48be74f <ppp_deflate_draft+1b8f/????>
Trace; c48be72a <ppp_deflate_draft+1b6a/????>
Trace; c48be701 <ppp_deflate_draft+1b41/????>
Trace; c48be754 <ppp_deflate_draft+1b94/????>
Trace; c01843ee <handle_scancode+9ee/12cc>
Trace; c48be76a <ppp_deflate_draft+1baa/????>
Trace; c010fa6b <sleep_on_timeout+6cb/1418>
Trace; c010e71e <recalc_sigpending+ee/10c>
Trace; c010e737 <recalc_sigpending+107/10c>
Trace; c010fd90 <sleep_on_timeout+9f0/1418>
Trace; c011684e <get_fast_time+6d6/7fc>
Trace; c0108c54 <enable_irq+12c/13c>
Trace; c0106000 <get_option+0/4c>
Trace; c0107d9c <__up_wakeup+1090/1db0>
Trace; c0106000 <get_option+0/4c>
Trace; c01061e4 <enable_hlt+3c/5c>
Trace; c0106000 <get_option+0/4c>
Trace; c0100176 Before first symbol
Code; c48c248a <ppp_deflate_draft+58ca/????>
00000000 <_EIP>:
Code; c48c248a <ppp_deflate_draft+58ca/????> <=====
0: 89 50 04 movl %edx,0x4(%eax) <=====
Code; c48c248d <ppp_deflate_draft+58cd/????>
3: 89 02 movl %eax,(%edx)
Code; c48c248f <ppp_deflate_draft+58cf/????>
5: c9 leave
Code; c48c2490 <ppp_deflate_draft+58d0/????>
6: c3 ret
Code; c48c2491 <ppp_deflate_draft+58d1/????>
7: 8d 76 00 leal 0x0(%esi),%esi
Code; c48c2494 <ppp_deflate_draft+58d4/????>
a: 55 pushl %ebp
Code; c48c2495 <ppp_deflate_draft+58d5/????>
b: 89 e5 movl %esp,%ebp
Code; c48c2497 <ppp_deflate_draft+58d7/????>
d: 83 ec 18 subl $0x18,%esp
Code; c48c249a <ppp_deflate_draft+58da/????>
10: 8b 4d 0c movl 0xc(%ebp),%ecx
Code; c48c249d <ppp_deflate_draft+58dd/????>
13: 86 00 xchgb %al,(%eax)
Aiee, killing interrupt handler
Kernel panic: Attempted to kill the idle task!
In swapper task - not syncing

8 warnings and 1 error issued. Results may not be reliable.

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