linux-kernel - Re: ATA failure regression in kernel 4.2

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Date:	Thu, 23 Jul 2015 14:44:06 -0400
From:	Alex Deucher <alexdeucher@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: ATA failure regression in kernel 4.2

On Thu, Jul 23, 2015 at 2:35 PM, Tejun Heo <tj@...nel.org> wrote:
> Hello,
>
> On Thu, Jul 23, 2015 at 01:48:24PM -0400, Alex Deucher wrote:
>> Something new in kernel 4.2 seems to have broken one of my hard drives
>> (ssd) in kernel 4.2.  4.1 and older kernels work fine.  Here are the
>> relevant logs.
>>
> ...
>> [    6.547628] ata2.00: qc timeout (cmd 0xec)
>> [    6.547721] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>> [    7.007213] ata2: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
>> [   16.997819] ata2.00: qc timeout (cmd 0xec)
>> [   16.997910] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>> [   16.997995] ata2: limiting SATA link speed to 3.0 Gbps
>> [   17.457400] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
>> [   47.429257] ata2.00: qc timeout (cmd 0xec)
>> [   47.429349] ata2.00: failed to IDENTIFY (I/O error, err_mask=0x4)
>> [   47.888822] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
>
> Nothing really rings a bell.  Timeouts on IDENTIFY.  Could be IRQ
> related.  Which controller is it (lspci -nn)?  Also, can you try to
> bisect the issue?

00:11.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH
SATA Controller [AHCI mode] [1022:7801] (rev 40)
00:14.1 IDE interface [0101]: Advanced Micro Devices, Inc. [AMD] FCH
IDE Controller [1022:780c]

I can take a look at bisecting later this week.

Alex

>
> Thanks.
>
> --
> tejun
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