linux-kernel - Re: [BUG] 2.6.18-rc6: hda is allready "IN USE" when booting / pi futex

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Message-ID: <20060912153932.GA14388@core>
Date:	Tue, 12 Sep 2006 17:39:32 +0200
From:	Christian Leber <christian@...er.de>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...e.hu>
Subject: Re: [BUG] 2.6.18-rc6: hda is allready "IN USE" when booting / pi futex

On Thu, Sep 07, 2006 at 03:33:57PM +0200, Christian Leber wrote:

> ide0: I/O resource 0x3F6-0x3F6
> hda: ERROR, PORTS ALREADY IN USE
> ide0 ad 0x1f0-0x1f7,0x3f6 on irq 14
> hdb: HL-DT-STDVD-ROM GDR8081N, ATAPI CD/DVD-ROM drive
> ide1: I/O resource 0x376-0x376 not free
> ide0: ports already in use, skipping probe
> register_blkdev: cannot get major 3 for ide0
> 
> the probablity for this is about 70%, so with some patience i can use
> the box, but that also means it's very odd.
> Between the tries i allways switch it completly off.
> 
> It's a Dell Latitude C810 laptop with a Pentium 3m 1133 Mhz with Intel 82815
> chipset that has a ICH2M south-bridge.

I wasted a day to track it down, unfortunally it's for me completly
unclear how this commit s related to IDE, it could be some
timing issue, but that is just guessing.

With  77ba89c5cf28d5d98a3cae17f67a3e42b102cc25 (linux-2.6 tree) i don't have a
problem (i booted it 21 times until now and it allways worked) and 
b29739f902ee76a05493fb7d2303490fc75364f4 is the first bad commit.

So this seems to be the "offender":
Author: Ingo Molnar <mingo@...e.hu>
Date:   Tue Jun 27 02:54:51 2006 -0700

    [PATCH] pi-futex: scheduler support for pi


For convenience the diff is also here:
http://debian.christian-leber.de/idebad.patch
I have really no remote idea what is happening.

BTW: I have seen this problem too on a box with a intel BX440, but only
one time.

Christian Leber

-- 
  "Omnis enim res, quae dando non deficit, dum habetur et non datur,
   nondum habetur, quomodo habenda est."       (Aurelius Augustinus)
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