Symptoms

Assume that you install Subsystem for UNIX-based Applications (SUA) on a computer that is running Windows Vista or Windows Server 2008. Additionally, assume that you run a Korn shell script that creates child processes on this computer. In this situation, the main process of the Korn shell script freezes.

Cause

This issue occurs because the SIGCHLD signal is not delivered to the thread in the Korn shell.

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 Windows Vista Service Pack 2 (SP2) or Windows Server 2008 SP2.

For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

Registry information

To apply this hotfix, 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.

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 Vista and Windows Server 2008 file information notesImportant Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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

    6.0.600
    2.
    22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • 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 and for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintaining the state of the updated component. 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 Vista and of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Baseu.dnl

Not applicable

166

09-Sep-2011

12:09

Not applicable

Baseu.prm

Not applicable

1,153

09-Sep-2011

12:09

Not applicable

Disablesetuid.ini

Not applicable

92

09-Sep-2011

12:09

Not applicable

Download.url

Not applicable

71

09-Sep-2011

12:09

Not applicable

Enablesetuid.ini

Not applicable

92

09-Sep-2011

12:09

Not applicable

Posix.exe

6.0.6002.22991

80,896

01-Dec-2012

01:48

x86

Posixsscom.dll

6.0.6002.22991

5,632

01-Dec-2012

03:20

x86

Psxdll.dll

6.0.6002.22991

314,880

01-Dec-2012

03:20

x86

Psxdllsvr.dll

6.0.6002.22991

364,032

01-Dec-2012

03:20

x86

Psxdrv.sys

6.0.6002.22991

9,216

01-Dec-2012

01:48

x86

Psxrun.exe

6.0.6002.22991

40,960

01-Dec-2012

01:48

x86

Psxss.exe

6.0.6002.22991

654,848

01-Dec-2012

01:49

x86

Suacore-ppdlic.xrm-ms

Not applicable

2,993

01-Dec-2012

03:06

Not applicable

Suares.dll

6.0.6002.22991

2,048

01-Dec-2012

01:47

x86

Baseu.dnl

Not applicable

166

09-Sep-2011

12:09

Not applicable

Baseu.prm

Not applicable

1,153

09-Sep-2011

12:09

Not applicable

Desktop.ini

Not applicable

81

09-Sep-2011

12:09

Not applicable

Disablesetuid.ini

Not applicable

92

09-Sep-2011

12:09

Not applicable

Download.url

Not applicable

71

09-Sep-2011

12:09

Not applicable

Enablesetuid.ini

Not applicable

92

09-Sep-2011

12:09

Not applicable

Posix.exe

6.0.6002.22991

80,896

01-Dec-2012

01:48

x86

Posixsscom.dll

6.0.6002.22991

5,632

01-Dec-2012

03:20

x86

Psxdll.dll

6.0.6002.22991

314,880

01-Dec-2012

03:20

x86

Psxdllsvr.dll

6.0.6002.22991

364,032

01-Dec-2012

03:20

x86

Psxdrv.sys

6.0.6002.22991

9,216

01-Dec-2012

01:48

x86

Psxrun.exe

6.0.6002.22991

40,960

01-Dec-2012

01:48

x86

Psxss.exe

6.0.6002.22991

654,848

01-Dec-2012

01:49

x86

Sua-ppdlic.xrm-ms

Not applicable

2,981

01-Dec-2012

03:06

Not applicable

Suagc.exe

6.0.6002.22991

7,680

01-Dec-2012

01:48

x86

Suares.dll

6.0.6002.22991

2,048

01-Dec-2012

01:47

x86

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

File name

File version

File size

Date

Time

Platform

Baseu.dnl

Not applicable

166

01-Dec-2011

11:52

Not applicable

Baseu.prm

Not applicable

1,153

01-Dec-2011

11:52

Not applicable

Disablesetuid.ini

Not applicable

92

01-Dec-2011

11:52

Not applicable

Download.url

Not applicable

71

01-Dec-2011

11:52

Not applicable

Enablesetuid.ini

Not applicable

92

01-Dec-2011

11:52

Not applicable

Posix.exe

6.0.6002.22991

89,088

01-Dec-2012

02:01

x64

Psxdll.dll

6.0.6002.22991

333,824

01-Dec-2012

03:42

x64

Psxdllsvr.dll

6.0.6002.22991

382,464

01-Dec-2012

03:42

x64

Psxdrv.sys

6.0.6002.22991

10,240

01-Dec-2012

02:01

x64

Psxrun.exe

6.0.6002.22991

44,544

01-Dec-2012

02:01

x64

Psxss.exe

6.0.6002.22991

847,360

01-Dec-2012

02:02

x64

Suacore-ppdlic.xrm-ms

Not applicable

2,993

01-Dec-2012

03:22

Not applicable

Suares.dll

6.0.6002.22991

2,048

01-Dec-2012

02:01

x64

Baseu.dnl

Not applicable

166

01-Dec-2011

11:52

Not applicable

Baseu.prm

Not applicable

1,153

01-Dec-2011

11:52

Not applicable

Desktop.ini

Not applicable

81

01-Dec-2011

11:52

Not applicable

Disablesetuid.ini

Not applicable

92

01-Dec-2011

11:52

Not applicable

Download.url

Not applicable

71

01-Dec-2011

11:52

Not applicable

Enablesetuid.ini

Not applicable

92

01-Dec-2011

11:52

Not applicable

Posix.exe

6.0.6002.22991

89,088

01-Dec-2012

02:01

x64

Psxdll.dll

6.0.6002.22991

333,824

01-Dec-2012

03:42

x64

Psxdllsvr.dll

6.0.6002.22991

382,464

01-Dec-2012

03:42

x64

Psxdrv.sys

6.0.6002.22991

10,240

01-Dec-2012

02:01

x64

Psxrun.exe

6.0.6002.22991

44,544

01-Dec-2012

02:01

x64

Psxss.exe

6.0.6002.22991

847,360

01-Dec-2012

02:02

x64

Sua-ppdlic.xrm-ms

Not applicable

2,981

01-Dec-2012

03:22

Not applicable

Suagc.exe

6.0.6002.22991

8,704

01-Dec-2012

02:01

x64

Suares.dll

6.0.6002.22991

2,048

01-Dec-2012

02:01

x64

Posixsscom.dll

6.0.6002.22991

5,632

01-Dec-2012

03:20

x86

Psxdll.dll

6.0.6002.22991

333,824

01-Dec-2012

03:20

x86

Psxdllsvr.dll

6.0.6002.22991

382,976

01-Dec-2012

03:20

x86

Posixsscom.dll

6.0.6002.22991

5,632

01-Dec-2012

03:20

x86

Psxdll.dll

6.0.6002.22991

333,824

01-Dec-2012

03:20

x86

Psxdllsvr.dll

6.0.6002.22991

382,976

01-Dec-2012

03:20

x86

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

File name

File version

File size

Date

Time

Platform

Baseu.dnl

Not applicable

166

15-Mar-2011

07:08

Not applicable

Baseu.prm

Not applicable

1,153

15-Mar-2011

07:08

Not applicable

Desktop.ini

Not applicable

81

15-Mar-2011

07:08

Not applicable

Disablesetuid.ini

Not applicable

92

15-Mar-2011

07:08

Not applicable

Download.url

Not applicable

71

15-Mar-2011

07:08

Not applicable

Enablesetuid.ini

Not applicable

92

15-Mar-2011

07:08

Not applicable

Posix.exe

6.0.6002.22991

181,248

01-Dec-2012

01:01

IA-64

Psxdll.dll

6.0.6002.22991

736,768

01-Dec-2012

02:17

IA-64

Psxdllsvr.dll

6.0.6002.22991

762,368

01-Dec-2012

02:17

IA-64

Psxdrv.sys

6.0.6002.22991

20,480

01-Dec-2012

01:01

IA-64

Psxrun.exe

6.0.6002.22991

75,776

01-Dec-2012

01:01

IA-64

Psxss.exe

6.0.6002.22991

1,645,568

01-Dec-2012

01:02

IA-64

Sua-ppdlic.xrm-ms

Not applicable

2,981

01-Dec-2012

02:08

Not applicable

Suagc.exe

6.0.6002.22991

16,384

01-Dec-2012

01:01

IA-64

Suares.dll

6.0.6002.22991

2,048

01-Dec-2012

01:01

IA-64

Posixsscom.dll

6.0.6002.22991

5,632

01-Dec-2012

03:20

x86

Psxdll.dll

6.0.6002.22991

333,824

01-Dec-2012

03:20

x86

Psxdllsvr.dll

6.0.6002.22991

382,976

01-Dec-2012

03:20

x86


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

Additional file information

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