linux-kernel - Re: BUG in drivers/dma/ioat/dma

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Message-ID: <AANLkTilFeksHShFL6Y7LbgLQLFTuFS3cfFyDmPG0CKZh@mail.gmail.com>
Date:	Wed, 30 Jun 2010 11:43:01 -0700
From:	Chris Li <lkml@...isli.org>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	david.woodhouse@...el.com
Subject: Re: BUG in drivers/dma/ioat/dma_v2.c:314

On Wed, Jun 30, 2010 at 11:26 AM, Chris Li <lkml@...isli.org> wrote:
> iommu=off cause the kernel not boot properly. BTW, that is why I lost
> my machine remotely last night. There is some sata error keep printing on
> the console. Let me try to collect that once I reboot the machine again.

The error is flushing the screen very fast. Now it stops. I type the
last one in:

nommu_map_sg: overflow 270e3800+256 of device mask fffffff
ata1.00: execption Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
sr 0:0:0:0: [sr0] CDB: Inquiry: 12 00 00 00 fe 00
ata1.00: cmd a0/01:00:00:fe:00/00/00:00:00:00:00/a0 tag 0 dma 16640 in
             res 50/00:03:16:00:00/00:00:00:00:00:00/a0 Emask 0x40
(internal error)
ata1.00: status: {DRDY}
ata1.00: configured for UDMA/166
ata1: EH complete

I get lost of those.

Chris
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