linux-kernel - Re: [bisected] Re: todays git: WARNING: at drivers/ata/libata-sff.c:1017 ata_sff_hsm

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Message-ID: <20090110135731.0da08c90@lxorguk.ukuu.org.uk>
Date:	Sat, 10 Jan 2009 13:57:31 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Jeff Garzik <jeff@...zik.org>,
	Sergei Shtylyov <sshtylyov@...mvista.com>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	linux-ide@...r.kernel.org, Jeff Garzik <jgarzik@...hat.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [bisected] Re: todays git: WARNING: at
 drivers/ata/libata-sff.c:1017 ata_sff_hsm_move+0x45e/0x750()

On Sat, 10 Jan 2009 14:36:17 +0100
Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Ingo Molnar <mingo@...e.hu> wrote:
> 
> > build its random kernel and reboot into it (800 MHz P3), so i started a 
> > full automated bisection instead driven from a faster box.
> 
> and the winner is:
> 
> | 871af1210f13966ab911ed2166e4ab2ce775b99d is first bad commit
> | commit 871af1210f13966ab911ed2166e4ab2ce775b99d
> | Author: Alan Cox <alan@...hat.com>
> | Date:   Mon Jan 5 14:16:39 2009 +0000
> |
> |     libata: Add 32bit PIO support
> 
> And the revert below does the trick.

Unfortunately it only hides the bug - that code doesn't change the sg
lists being passed, it just catches out anyone who pasts a non divisble
by four malformed sg list.

The real bug is still there
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