linux-kernel - Re: [PATCH] JMicron JM20337 USB-SATA data corruption bugfix

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Message-Id: <20080729220908.8b698469.alex.buell@munted.org.uk>
Date:	Tue, 29 Jul 2008 22:09:08 +0100
From:	Alex Buell <alex.buell@...ted.org.uk>
To:	Robert Hancock <hancockr@...w.ca>
Cc:	Tomas Styblo <tripie@...n.org>, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net,
	Alan Stern <stern@...land.harvard.edu>
Subject: Re: [PATCH] JMicron JM20337 USB-SATA data corruption bugfix -
 device 152d:2338

On Tue, 22 Jul 2008 02:45:32 -0600, I waved a wand and this message
magically appears in front of Robert Hancock:

> I suppose it wouldn't hurt to let JMicron know about this. I doubt
> they could do anything for existing chipsets, but it might help them
> avoid this bug in future designs.

I can reproduce this EVERY time with SATA disks using the same JM20337
chipset. 

1. mke2fs /dev/sda1
2. tunefs -j /dev/sda1
3. e2fsck /dev/sda1

This spits out a whole load of:
Jul 29 22:04:41 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:04:41 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:04:43 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:04:43 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:04:44 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:04:44 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:04:45 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:04:45 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:04:45 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:04:45 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:06:31 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:06:31 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:06:32 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:06:32 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:06:35 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:06:35 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:06:51 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:06:51 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:06:51 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:06:51 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:06:54 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:06:54 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:07:37 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:07:37 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:07:37 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:07:37 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:07:47 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:07:47 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:08:04 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:08:04 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0
Jul 29 22:08:06 lithium sd 4:0:0:0: [sda] Sense Key : 0x0 [current] 
Jul 29 22:08:06 lithium sd 4:0:0:0: [sda] ASC=0x0 ASCQ=0x0

-- 
http://www.munted.org.uk

Fearsome grindings.
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