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

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Message-ID: <49689F19.7030203@garzik.org>
Date:	Sat, 10 Jan 2009 08:14:01 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Christian Borntraeger <borntraeger@...ibm.com>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Sergei Shtylyov <sshtylyov@...mvista.com>,
	linux-ide@...r.kernel.org, Jeff Garzik <jgarzik@...hat.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: todays git: WARNING: at drivers/ata/libata-sff.c:1017 ata_sff_hsm_move+0x45e/0x750()

Christian Borntraeger wrote:
> Am Samstag 10 Januar 2009 schrieb Alan Cox:
>>>    That's the typical REQUEST SENSE command with 18-byte data length.
>> Which means something has become horribly broken in the core libata stack.
>> An 18 byte inquiry would have 18 bytes as the *last* sg element. That
>> would therefore not trigger the WARN_ON. Someone has passed an sg list
>> that isn't properly terminated perhaps ?
>>
>> I wonder if the pad code broke this.
> 
> I just checked 2.6.28 + PIO32 patch. Its also broken. Whatever caused this 
> problem did it a while ago.

Just to be clear, you mean:

2.6.28 is OK
2.6.28 + PIO32 is broken

Correct?

	Jeff




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