From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <446E08CF.6060505@domain.hid>
Date: Fri, 19 May 2006 20:05:03 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-help] Almost running - kernel BUG in add_preempt_count
	at	kernel/sched.c:2819!
References: <B4D14EA407C38B4DAF92B8EAC9249D7F0179D3BC@mspex01.go.mts.com>
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To: "Rosenow, Jim" <Jim.Rosenow@domain.hid>
Cc: xenomai@xenomai.org

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Rosenow, Jim wrote:
> Hi,
>=20
> I've almost got my mvme5500 running.  I get the following error when bo=
oting up.
>=20
> kernel BUG in add_preempt_count at kernel/sched.c:2819!
>=20
> Oops: kernel access of bad area, sig: 11 [#1]
>=20
> I'm a little new at this and don't know whether I'm looking at a xenoma=
i problem, an adeos problem, or something else.
>=20
> Any help and direction would be appreciated.
>=20

If unsure where the problem comes from, try to boot a clean kernel
(unpatched) first, then a patched one but with disabled ipipe, and then
one with disabled xenomai. If the bug seems to be ipipe/xeno-related,
please report the patch and the xenomai versions, and also any potential
board-specific patches.

Jan


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