[Klone-users] Memory Leak in uClinux

[moises acuna]

Hi Steven,
thanks for the response.
first i tried with a reduced version of the project, but it's still growing
with every refresh. So i tried it with Valgrind and it seems that the leak
is in some KLone files.
this is the report:

--3673-- supp:     21 dl-hack3-1
==3673== malloc/free: in use at exit: 1,996 bytes in 99 blocks.
==3673== malloc/free: 8,305 allocs, 8,206 frees, 5,136,560 bytes allocated.
==3673==
==3673== searching for pointers to 99 not-freed blocks.
==3673== checked 331,292 bytes.
==3673==
==3673== 1,988 (1,808 direct, 180 indirect) bytes in 89 blocks are
definitely lost in loss record 3 of 3
==3673==    at 0x4021BDE: calloc (vg_replace_malloc.c:397)
==3673==    by 0x80953D9: u_zalloc (memory.c:63)
==3673==    by 0x80910CC: u_hmap_o_new (hmap.c:1072)
==3673==    by 0x8075D9E: emb_register (emb.c:69)
==3673==    by 0x807F926: module_init_2c8d30e5acaba22237ea983216ef3130
(pg_2c8d30e5acaba22237ea983216ef3130.c:50)
==3673==    by 0x807AA41: do_register (register.c:22)
==3673==    by 0x807AA29: register_pages (register.c:9)
==3673==    by 0x8075BA1: emb_init (emb.c:32)
==3673==    by 0x8050C3D: app_init (main.c:96)
==3673==    by 0x805130C: main (entry.c:397)
==3673==
==3673== LEAK SUMMARY:
==3673==    definitely lost: 1,808 bytes in 89 blocks.
==3673==    indirectly lost: 180 bytes in 9 blocks.
==3673==      possibly lost: 0 bytes in 0 blocks.
==3673==    still reachable: 8 bytes in 1 blocks.
==3673==         suppressed: 0 bytes in 0 blocks.




by 0x807F926: module_init_2c8d30e5acaba22237ea983216ef3130
(pg_2c8d30e5acaba22237ea983216ef3130.c:50)

this one is generated in the site. It says that the leak is in this
function:

void module_init_2c8d30e5acaba22237ea983216ef3130(void)
{
    res_ctor();
    emb_register((embres_t*)&e);
}

i don't know if this is some kind of a bug or something.

The problem here is that the kloned process in the uCLinux is growin and
growing with every refresh and after 3 days running the server will have an
stack overflow or something. This doesn't happen in Ubuntu.

Thanks for any help with this.



2009/8/11 Steven Van Ingelgem <steven at vaningelgem.be>

> You can try running it through valgrind:
>
> valgrind -v --leak-check=full ./kloned
>
>
> After you have done running the pages, you can see if it is truly a leak or
> not.
>
>
> --
> Steven
> www.salvania.be
>
> 2009/8/12 moises acuna <moises.acuna at gmail.com>
>
>> Hello everyone,
>> i'm having trouble with the Klone server over uClinux. The kloned process
>> memory allocation is getting bigger and bigger every refresh of a page (i
>> have an option in a page to turn on or off an every-5-seconds-autorefresh),
>> but this happens only in uClinux , with Linux( Ubuntu 8.04) this doesn't
>> happens. The process stays stable there. I've been trying to manage the
>> memory for arrays and everything the best way possible and not leaving any
>> pointer hanging. Have you ever had a problem like this. Am I missing
>> something. Thanks for any help.
>>
>> pd. the uclinux version is  v3.2.0.ANI0803
>>
>>
>>
>> --
>> Moisés AAC
>>
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>> Klone-users at koanlogic.com
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>>
>>
>
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>


-- 
Moisés AAC
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