(2.6.12) Unable to handle kernel paging request at virtual address 00100100

(2.6.12) Unable to handle kernel paging request at virtual address 00100100

[Adayadil Thomas]

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

Re: (2.6.12) Unable to handle kernel paging request at virtual address 00100100

[Jesse Brandeburg]

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

On 11/7/05, Adayadil Thomas <adayadil.thomas@gmail.com> 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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