From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Wed, 18 Aug 2010 17:13:53 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] xenomai 2.5.3/native, kernel 2.6.31.8 and fork()
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To: =?UTF-8?B?S3J6eXN6dG9mIELFgmFzemtvd3NraQ==?= <kb@domain.hid>
Cc: xenomai@xenomai.org

Krzysztof B=C5=82aszkowski wrote:
> On Wed, 2010-08-18 at 16:30 +0200, Gilles Chanteperdrix wrote:
>> Krzysztof B=C5=82aszkowski wrote:
>>> On Wed, 2010-08-18 at 16:10 +0200, Gilles Chanteperdrix wrote:
>>>> Krzysztof B=C5=82aszkowski wrote:
>>>>> yes. i downloaded this config a while ago. need to setup new kernel=

>>>>> 2.6.31.1 with xenomai.=20
>>>>> is 2.5.4 suitable for this test ?=20
>>>>> should i also use adeos-*.31.1-*2.4-09 patch ?
>>>> See the versions I posted in my test report yesterday. They were mad=
e
>>>> with this configuration.
>>>>
>>> ok. kernel 2.6.31.8, 2.5.4, ht will be enabled,
>>>
>>> for xenomai's configure i will pass following switches:
>>> --enable-x86-sep --enable-x86-tsc --enable-smp
>>>
>>> is this okay ?
>> Yes.
>>
>=20
> bingo !
>=20
> atest:~/xeno-test-254-2 # ./.try.sh=20
> main:79 heap 0x401b1000
> /root/xeno-test-254-2
> main:96 [823] pid 825
> main:89
> main:90 [825] pid 0
> main:99 [823] pid 825, status 00000b00
> main:100 [823] pid 825, WIFSIGNALED 0, WIFEXITED 1, rc 11
> 0
> atest:~/xeno-test-254-2 # uname -a
> Linux atest 2.6.31.8-xeno254-smp-ht #1 SMP Wed Aug 18 17:04:00 CEST 201=
0
> i686 i686 i386 GNU/Linux
>=20
>=20
> my fork() test works now with kernel configured with your config.
>=20
> so this try proves no doubt that userland (libc, pthreads and so on)
> work.
>=20
> and i guess that this memory corruption which caused fork to die inside=

> libc can be something specific to UP configuration. (i was thinking
> about using my config with smp this time)
>=20
> Thank you for sending me kernel configuration which pointed out an area=

> which should be searched further.

Yes, now if you find the culprit option, it would be nice to report here
so that we can fix the I-pipe patch.

--=20
					    Gilles.