Symptoms

When you use Advanced DMA 2 (ADMA2) host controller implementation for the Secure Digital (SD) card bus driver(Sdbus.sys) on a computer that is running Windows 7 or Windows Server 2008 R2, a buffer alignment error may occur. Additionally, Device Manager displays the following:

  • A yellow exclamation mark on the controller

  • Error code 10

Cause

This issue occurs because the alignment of the data buffer that is provided by the function driver (4-byte aligned) for ADMA2 transfer does not match the specification of the SD card bus driver (8-byte aligned). Therefore, the driver fails, and error code 10 is displayed in Device Manager.

Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:

  • Windows 7

  • Windows 7 Service Pack 1 (SP1)

  • Windows Server 2008 R2

  • Windows Server 2008 R2 Service Pack 1 (SP1)

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 7 and Windows Server 2008 R2 file information notes


  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.1.760
    0.
    16xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    GDR

    6.1.760
    0.
    20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.
    17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    6.1.760
    1.
    21xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, very important issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Sdbus.sys

6.1.7600.16722

84,992

18-Dec-2010

03:24

x86

Sdbus.sys

6.1.7600.20861

84,992

18-Dec-2010

03:25

x86

Sdbus.sys

6.1.7601.17527

84,992

17-Dec-2010

04:53

x86

Sdbus.sys

6.1.7601.21624

84,992

18-Dec-2010

05:56

x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Sdbus.sys

6.1.7600.16722

109,056

18-Dec-2010

03:41

x64

Sdbus.sys

6.1.7600.20861

109,056

18-Dec-2010

03:39

x64

Sdbus.sys

6.1.7601.17527

109,056

17-Dec-2010

08:44

x64

Sdbus.sys

6.1.7601.21624

109,056

18-Dec-2010

06:17

x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Sdbus.sys

6.1.7600.16722

271,872

18-Dec-2010

03:07

IA-64

Sdbus.sys

6.1.7600.20861

271,872

18-Dec-2010

03:06

IA-64

Sdbus.sys

6.1.7601.17527

271,872

17-Dec-2010

04:15

IA-64

Sdbus.sys

6.1.7601.21624

271,872

18-Dec-2010

06:55

IA-64

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

For more information about secure digital card direct memory access support, visit the following Microsoft webpage:

Introduction to secure digital card direct memory access support

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File name

Update.mum

File version

Not applicable

File size

2,285

Date (UTC)

20-Dec-2010

Time (UTC)

05:57

Platform

Not applicable

File name

X86_sdbus.inf_31bf3856ad364e35_6.1.7600.16722_none_71f6f9292b7ca83c.manifest

File version

Not applicable

File size

2,075

Date (UTC)

18-Dec-2010

Time (UTC)

06:02

Platform

Not applicable

File name

X86_sdbus.inf_31bf3856ad364e35_6.1.7600.20861_none_725455fa44bb9e73.manifest

File version

Not applicable

File size

2,075

Date (UTC)

18-Dec-2010

Time (UTC)

05:54

Platform

Not applicable

File name

X86_sdbus.inf_31bf3856ad364e35_6.1.7601.17527_none_73e257a1289e92db.manifest

File version

Not applicable

File size

2,075

Date (UTC)

17-Dec-2010

Time (UTC)

07:46

Platform

Not applicable

File name

X86_sdbus.inf_31bf3856ad364e35_6.1.7601.21624_none_7468f38e41bee6a0.manifest

File version

Not applicable

File size

2,075

Date (UTC)

18-Dec-2010

Time (UTC)

08:28

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_sdbus.inf_31bf3856ad364e35_6.1.7600.16722_none_ce1594ace3da1972.manifest

File version

Not applicable

File size

2,079

Date (UTC)

18-Dec-2010

Time (UTC)

06:52

Platform

Not applicable

File name

Amd64_sdbus.inf_31bf3856ad364e35_6.1.7600.20861_none_ce72f17dfd190fa9.manifest

File version

Not applicable

File size

2,079

Date (UTC)

18-Dec-2010

Time (UTC)

06:49

Platform

Not applicable

File name

Amd64_sdbus.inf_31bf3856ad364e35_6.1.7601.17527_none_d000f324e0fc0411.manifest

File version

Not applicable

File size

2,079

Date (UTC)

17-Dec-2010

Time (UTC)

12:20

Platform

Not applicable

File name

Amd64_sdbus.inf_31bf3856ad364e35_6.1.7601.21624_none_d0878f11fa1c57d6.manifest

File version

Not applicable

File size

2,079

Date (UTC)

18-Dec-2010

Time (UTC)

09:21

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,709

Date (UTC)

20-Dec-2010

Time (UTC)

05:57

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_sdbus.inf_31bf3856ad364e35_6.1.7600.16722_none_71f89d1f2b7ab138.manifest

File version

Not applicable

File size

2,077

Date (UTC)

18-Dec-2010

Time (UTC)

06:50

Platform

Not applicable

File name

Ia64_sdbus.inf_31bf3856ad364e35_6.1.7600.20861_none_7255f9f044b9a76f.manifest

File version

Not applicable

File size

2,077

Date (UTC)

18-Dec-2010

Time (UTC)

06:49

Platform

Not applicable

File name

Ia64_sdbus.inf_31bf3856ad364e35_6.1.7601.17527_none_73e3fb97289c9bd7.manifest

File version

Not applicable

File size

2,077

Date (UTC)

17-Dec-2010

Time (UTC)

08:18

Platform

Not applicable

File name

Ia64_sdbus.inf_31bf3856ad364e35_6.1.7601.21624_none_746a978441bcef9c.manifest

File version

Not applicable

File size

2,077

Date (UTC)

18-Dec-2010

Time (UTC)

09:55

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,933

Date (UTC)

20-Dec-2010

Time (UTC)

05:57

Platform

Not applicable

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