[Click] Unable to handle kernel paging request at virtual address

[Beyers Cronje]

Hi Thomas,

How big is your hashmap at the point of the crash? Hashmap only supports a
maximum of 32k entries due to kmalloc limitation. If this is your issue, you
can work around this by creating multiple hashmaps and hash inserts across
them.

Maybe hashmap should also be a CLICK_LALLOC candidate.

Cheers

Beyers

On 10/25/06, Paine, Thomas Asa <PAINETA at uwec.edu> wrote:
>
> Ok, I started a long email but soon realized it would be confusing as
> hell, so let me try the quick and dirty post first :)
>
>         I'm getting oops, with EIP always pointing to HashMap.insert.
> However, the call trace can differ (somewhat) and the top of the call
> trace is not always in a method using HashMap.insert (.find though).
> Eliminating calls seen in the trace seems to have no affect on
> preventing an oops.  Are there any open issues/changes with HashMap?  Is
> this a memory allocation error?  Possible incorrect kernel setting?
> Anyone have troubleshooting recommendations for this error?  I've
> attached my current kernel config for 2.6.16.13.  I'm not 100% sure this
> has anything to do specifically with hashmap, or if it is just hashmap
> manifesting the error, for whatever the real reason might be.
>
> Looking for some guidance, thanks.
>
>
> Unable to handle kernel paging request at virtual address f9291c89
> printing eip:
> e08eea67
> *pde = 00000000
> Oops: 0000 [#1]
> SMP
> Modules linked in: tms click proclikefs e1000
> CPU:    1
> EIP:    0060:[<e08eea67>]    Tainted: P      VLI
> EFLAGS: 00010282   (2.6.16.13-tms #3)
> EIP is at _ZN7HashMapIjjE6insertERKjS2_+0x57/0xe2 [tms]
> eax: 00003fff   ebx: 00007fff   ecx: dff152c0   edx: f9291c89
> esi: dfa23520   edi: 000066de   ebp: df703c88   esp: df703c48
> ds: 007b   es: 007b   ss: 0068
> Process bash (pid: 1030, threadinfo=df702000 task=c1b76a50)
> Stack: <0>e08e135f dfa23520 dfa93a00 dfb67180 dfa939c0 df703c88 e08e1706
> dfa23520
>        df703c88 df703cac dfb67180 00000001 00000004 00000000 00000000
> df703cb0
>        652a1c89 dfa939c0 00000000 df703cb0 dfa939c0 dfe69760 e08e181e
> dfa939c0
> Call Trace:
> [<e08e135f>] _ZN16BlacklistElement14is_whitelistedEm+0x5f/0xc6 [tms]
> [<e08e1706>] _ZN16BlacklistElement9addToListER6Stringj+0x172/0x1c8
> [tms]
> [<e08e181e>]
> _ZN16BlacklistElement13write_handlerERK6StringP7ElementPvP12ErrorHandler
> +0xc2/0x144 [tms]
> [<e0c5d50a>]
> _ZNK7Handler10call_writeERK6StringP7ElementbP12ErrorHandler+0x144/0x1ca
> [click]
> [<e0c67497>]
> _ZN11HandlerCall6assignEP7ElementRK6StringS4_iP12ErrorHandler+0x27/0x1e8
> [click]
> [<e0c68177>]
> _ZN11HandlerCall10call_writeEP7ElementRK6StringS4_P12ErrorHandler+0x93/0
> xcc [click]
> [<e0c68177>]
> _ZN11HandlerCall10call_writeEP7ElementRK6StringS4_P12ErrorHandler+0x93/0
> xcc [click]
> [<e08e9c48>] _ZN13TMSController4listEm6String+0x6a/0x1de [tms]
> [<e0c438e4>] click_lalloc+0x3c/0x3e [click]
> [<e0c3c4a2>] _ZN6String4MemoC1Eii+0x24/0x2c [click]
> [<e08ec238>] _ZN13TMSController14whitelist_cidrE6String+0xa8/0xde [tms]
> [<e08ecf40>]
> _ZN13TMSController13write_handlerERK6StringP7ElementPvP12ErrorHandler+0x
> 21a/0x2e2 [tms]
> [<e0c438e4>] click_lalloc+0x3c/0x3e [click]
> [<e0c3c4a2>] _ZN6String4MemoC1Eii+0x24/0x2c [click]
> [<e0c3c57a>] _ZN6String14append_garbageEi+0xa4/0x150 [click]
> [<e0c5d50a>]
> _ZNK7Handler10call_writeERK6StringP7ElementbP12ErrorHandler+0x144/0x1ca
> [click]
> [<e0c438e4>] click_lalloc+0x3c/0x3e [click]
> [<e0c3ce8d>] _ZN6String6appendEPKci+0x2f/0x76 [click]
> [<e0cc26e7>] handler_flush+0x577/0x57e [click]
> [<c0159c49>] filp_close+0x28/0x6d
> [<c016d1c6>] sys_dup2+0xc5/0xee
> [<c0102cb9>] syscall_call+0x7/0xb
> Code: d2 74 17 3b 0a 75 f5 8b 4c 24 24 8b 01 89 42 04 31 c0 83 c4 08 5b
> 5e 5f 5d c3 8b 46 0c 3b 46 10 73 41 8b 4e 14 8b 11 85 d2 74 5a <8b> 02
> 89 01 89 d3 8b 45 00 89 03 8b 4c 24 24 8b 01 89 43 04 8d
>
>
>
> Thanks,
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    Thomas Paine (paineta at uwec.edu)
>    University of Wisconsin - Eau Claire
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
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