linux-kernel - usb-storage, error reading the last 8 sectors, regression in 2.6.25-rc7

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Message-ID: <20080330074927.GA8178@slk.laptop>
Date:	Sun, 30 Mar 2008 11:49:27 +0400
From:	Sergey Dolgov <solkaa@...il.com>
To:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: usb-storage, error reading the last 8 sectors, regression in
	2.6.25-rc7

Hi!

If I boot Asus Eee PC with 8 Gb Transcend SDHC card inserted into the
internal card reader, 2.6.25-rc7 prints the following:

   [    9.914968] scsi 2:0:0:0: Direct-Access     USB2.0   CardReader SD0   0100 PQ: 0 ANSI: 0
   [   10.248951] sd 2:0:0:0: [sdb] 15660032 512-byte hardware sectors (8018 MB)
   [   10.249695] sd 2:0:0:0: [sdb] Write Protect is off
   [   10.249928] sd 2:0:0:0: [sdb] Mode Sense: 03 00 00 00
   [   10.249935] sd 2:0:0:0: [sdb] Assuming drive cache: write through
   [   10.256632] sd 2:0:0:0: [sdb] 15660032 512-byte hardware sectors (8018 MB)
   [   10.257440] sd 2:0:0:0: [sdb] Write Protect is off
   [   10.257546] sd 2:0:0:0: [sdb] Mode Sense: 03 00 00 00
   [   10.257552] sd 2:0:0:0: [sdb] Assuming drive cache: write through
   [   10.257657]  sdb: sdb1 sdb2 sdb3
   [   10.259560] sd 2:0:0:0: [sdb] Attached SCSI removable disk
   [   10.260489] usb-storage: device scan complete
   [   10.380590] sd 2:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
   [   10.380590] sd 2:0:0:0: [sdb] Sense Key : 0x4 [current] 
   [   10.380590] sd 2:0:0:0: [sdb] ASC=0x11 ASCQ=0x0
   [   10.380590] end_request: I/O error, dev sdb, sector 15660024

As a result, no sdb device is created by udev.

If the card is inserted after the boot, it sometimes works fine (I've
tested with "dd if=/dev/sdb of=/dev/null bs=512 skip=15660000"), and
sometimes fails in the same way (the same I/O error message, dd
hangs).

2.6.24.4 is fine (no problems at boot, always can dd read the whole
card, all 15660032 sectors of it).

The other SD card I've got, 2 Gb, also works ok even with 2.6.25-rc7.

-- 
Sergey
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