2005-11-07 23:06:07

by Adayadil Thomas

[permalink] [raw]
Subject: (2.6.12) Unable to handle kernel paging request at virtual address 00100100

Kernel Version: 2.6.12

I am debugging one module I have written. (ip_conntrack_dos)
Given below is the Oops message.

It would be greatly appreciated if someone could answer the questions I have.

1. "Unable to handle kernel paging request at virtual address 00100100" -->
I am wondering if this is a 2.6.12 's general issue or something to do
with my module.

2. I have the System.map that was crated when I compiled the 2.6.12 kernel.
This does'nt contain the symbols relevant to my module.
How can I get a System.map after I load my module ?

Any information is much appreciated.

Thanks

<1>Unable to handle kernel paging request at virtual address 00100100
<1> printing eip:
<4>f8bb245b
<1>*pde = 00000000
<1>Oops: 0000 [#1]
<4>PREEMPT SMP
<4>Modules linked in: ip_conntrack_dos e1000
<4>CPU: 0
<4>EIP: 0060:[<f8bb245b>] Tainted: P VLI
<4>EFLAGS: 00010246 (2.6.12)
<4>EIP is at init_conntrack_syn+0x193/0x214 [ip_conntrack_dos]
<4>eax: dd0f34b3 ebx: f48de908 ecx: f48de900 edx: 00000000
<4>esi: f4c65bc8 edi: f48de900 ebp: 00100100 esp: c040dae0
<4>ds: 007b es: 007b ss: 0068
<4>Process swapper (pid: 0, threadinfo=c040c000 task=c036eb00)
<4>Stack: 0239ed81 c040db20 f69a4480 f7549000 f48de900 f48de91c
000023a8 f8ca1000
<4> 00000000 00000000 f8bb27bf c040db20 0239ed81 c040dbf0
80000000 c02cb5d0
<4> a5ecad96 c0406108 010a0a0a c0065000 f7549000 00000000
c02b82b1 c02b860f
<4>Call Trace:
<4> [<f8bb27bf>] help+0x1ff/0x22c [ip_conntrack_dos]
<4> [<c02cb5d0>] br_dev_queue_push_xmit+0x0/0xe4
<4> [<c02b82b1>] ipt_route_hook+0x21/0x28
<4> [<c02b860f>] ip_nat_out+0x63/0x68
<4> [<c02af922>] ip_conntrack_help+0x26/0x38
<4> [<c027908b>] nf_iterate+0x33/0x70


2005-11-08 01:35:47

by Jesse Brandeburg

[permalink] [raw]
Subject: Re: (2.6.12) Unable to handle kernel paging request at virtual address 00100100

This is LIST_POISON, see include/linux/list.h

On 11/7/05, Adayadil Thomas <[email protected]> wrote:
> Kernel Version: 2.6.12
>
> I am debugging one module I have written. (ip_conntrack_dos)
> Given below is the Oops message.
>
> It would be greatly appreciated if someone could answer the questions I have.
>
> 1. "Unable to handle kernel paging request at virtual address 00100100" -->
> I am wondering if this is a 2.6.12 's general issue or something to do
> with my module.
>
> 2. I have the System.map that was crated when I compiled the 2.6.12 kernel.
> This does'nt contain the symbols relevant to my module.
> How can I get a System.map after I load my module ?
>
> Any information is much appreciated.
>
> Thanks
>
> <1>Unable to handle kernel paging request at virtual address 00100100
> <1> printing eip:
> <4>f8bb245b
> <1>*pde = 00000000
> <1>Oops: 0000 [#1]
> <4>PREEMPT SMP
> <4>Modules linked in: ip_conntrack_dos e1000
> <4>CPU: 0
> <4>EIP: 0060:[<f8bb245b>] Tainted: P VLI
> <4>EFLAGS: 00010246 (2.6.12)
> <4>EIP is at init_conntrack_syn+0x193/0x214 [ip_conntrack_dos]
> <4>eax: dd0f34b3 ebx: f48de908 ecx: f48de900 edx: 00000000
> <4>esi: f4c65bc8 edi: f48de900 ebp: 00100100 esp: c040dae0
> <4>ds: 007b es: 007b ss: 0068
> <4>Process swapper (pid: 0, threadinfo=c040c000 task=c036eb00)
> <4>Stack: 0239ed81 c040db20 f69a4480 f7549000 f48de900 f48de91c
> 000023a8 f8ca1000
> <4> 00000000 00000000 f8bb27bf c040db20 0239ed81 c040dbf0
> 80000000 c02cb5d0
> <4> a5ecad96 c0406108 010a0a0a c0065000 f7549000 00000000
> c02b82b1 c02b860f
> <4>Call Trace:
> <4> [<f8bb27bf>] help+0x1ff/0x22c [ip_conntrack_dos]
> <4> [<c02cb5d0>] br_dev_queue_push_xmit+0x0/0xe4
> <4> [<c02b82b1>] ipt_route_hook+0x21/0x28
> <4> [<c02b860f>] ip_nat_out+0x63/0x68
> <4> [<c02af922>] ip_conntrack_help+0x26/0x38
> <4> [<c027908b>] nf_iterate+0x33/0x70
> -
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