linux-kernel - Re: Hitachi disk: spurious completions during NCQ

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Message-Id: <20071012174637.9b3b517b.akpm@linux-foundation.org>
Date:	Fri, 12 Oct 2007 17:46:37 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Luca Tettamanti <kronos.it@...il.com>
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Hitachi disk: spurious completions during NCQ

On Wed, 10 Oct 2007 21:03:43 +0200
Luca Tettamanti <kronos.it@...il.com> wrote:

> Hello,
> sometimes kernel complains about spurious completions on my new
> notebook:
> 
> ata3.00: exception Emask 0x2 SAct 0x407fd SErr 0x0 action 0x2 frozen
> ata3.00: spurious completions during NCQ issue=0x0 SAct=0x407fd FIS=005040a1:00020000
> ata3.00: cmd 61/08:00:c7:5a:82/00:00:1b:00:00/40 tag 0 cdb 0x0 data 4096 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/08:10:3f:5b:fa/00:00:18:00:00/40 tag 2 cdb 0x0 data 4096 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/08:18:5f:5b:fa/00:00:18:00:00/40 tag 3 cdb 0x0 data 4096 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/18:20:6f:5b:fa/00:00:18:00:00/40 tag 4 cdb 0x0 data 12288 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/08:28:e7:19:fd/00:00:18:00:00/40 tag 5 cdb 0x0 data 4096 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/08:30:df:59:ae/00:00:1a:00:00/40 tag 6 cdb 0x0 data 4096 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/08:38:3f:5a:ae/00:00:1a:00:00/40 tag 7 cdb 0x0 data 4096 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/08:40:6f:62:ae/00:00:1a:00:00/40 tag 8 cdb 0x0 data 4096 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/28:48:d7:59:7e/00:00:1b:00:00/40 tag 9 cdb 0x0 data 20480 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/10:50:07:5b:82/00:00:1b:00:00/40 tag 10 cdb 0x0 data 8192 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3.00: cmd 61/30:90:f7:5a:fa/00:00:18:00:00/40 tag 18 cdb 0x0 data 24576 out
>          res 50/00:10:07:5b:82/00:00:1b:00:00/40 Emask 0x2 (HSM violation)
> ata3: soft resetting port
> ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
> ata3.00: configured for UDMA/133
> ata3: EH complete
> sd 2:0:0:0: [sda] 488397168 512-byte hardware sectors (250059 MB)
> sd 2:0:0:0: [sda] Write Protect is off
> sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00
> sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
> 
> (this is a very recent 2.6.23-git, SMP, x86_64)

The latest kernel, a serious-looking problem, sent to the correct mailing
lists.  After two days nobody has bothered replying.

> The disk is:
> 
> ATA device, with non-removable media
>         Model Number:       Hitachi HTS542525K9SA00
>         Firmware Revision:  BBFOC31P
> 
> The controller is: 
> 
> 00:1f.2 SATA controller: Intel Corporation Mobile SATA AHCI Controller (rev 03) (prog-if 01 [AHCI 1.0])
>         Subsystem: ASUSTeK Computer Inc. Unknown device 14e7
>         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
>         Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>         Latency: 0
>         Interrupt: pin B routed to IRQ 1272
>         Region 0: I/O ports at ec00 [size=8]
>         Region 1: I/O ports at e880 [size=4]
>         Region 2: I/O ports at e800 [size=8]
>         Region 3: I/O ports at e480 [size=4]
>         Region 4: I/O ports at e400 [size=32]
>         Region 5: Memory at febff800 (32-bit, non-prefetchable) [size=2K]
>         Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/2 Enable+
>                 Address: fee0300c  Data: 41b9
>         Capabilities: [70] Power Management version 3
>                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)
>                 Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>         Capabilities: [a8] #12 [0010]
> 
> and I'm using AHCI driver.
> 
> I see that similar disks are already blacklisted, probably this one is
> bugged too - though the error is pretty rare :(
> 

Does this cause any other symptoms?  ie: does the system otherwise work OK?


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