Symptoms

Assume that you run some Portable Operating System Interface for UNIX (POSIX)-based scripts or applications on a computer that is running Windows Vista or Windows Server 2008. In this situation, the POSIX subsystem (Psxss.exe) experiences high memory consumption. Additionally, the scripts or applications stop responding after some time.

Note This issue occurs after the POSIX-based scripts or applications run for a long time. For example, this issue occurs when the scripts or applications are running for a month.

Cause

This issue occurs because of a memory leak in Psxss.exe.

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 Vista Service Pack 2 (SP2)

  • Windows Server 2008 Service Pack 2 (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.
    23xxx

    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 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 Server 2008 and of Windows Vista

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

Loginenv

6.0.6002.23002

14,848

14-Dec-2012

01:12

Not Applicable

Makedev

6.0.6002.23002

36,864

14-Dec-2012

01:12

Not Applicable

Posix.exe

6.0.6002.23002

80,896

14-Dec-2012

01:13

x86

Posixsscom.dll

6.0.6002.23002

5,632

14-Dec-2012

02:34

x86

Psxdll.dll

6.0.6002.23002

314,880

14-Dec-2012

02:34

x86

Psxdllsvr.dll

6.0.6002.23002

364,032

14-Dec-2012

02:34

x86

Psxdrv.sys

6.0.6002.23002

9,216

14-Dec-2012

01:12

x86

Psxoffset

6.0.6002.23002

15,872

14-Dec-2012

01:12

Not Applicable

Psxrun.exe

6.0.6002.23002

40,960

14-Dec-2012

01:13

x86

Psxss.exe

6.0.6002.23002

654,848

14-Dec-2012

01:14

x86

Suacore-ppdlic.xrm-ms

Not Applicable

2,993

14-Dec-2012

02:21

Not Applicable

Suares.dll

6.0.6002.23002

2,048

14-Dec-2012

01:12

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

Loginenv

6.0.6002.23002

14,848

14-Dec-2012

01:12

Not Applicable

Makedev

6.0.6002.23002

36,864

14-Dec-2012

01:12

Not Applicable

Posix.exe

6.0.6002.23002

80,896

14-Dec-2012

01:13

x86

Posixsscom.dll

6.0.6002.23002

5,632

14-Dec-2012

02:34

x86

Psxdll.dll

6.0.6002.23002

314,880

14-Dec-2012

02:34

x86

Psxdllsvr.dll

6.0.6002.23002

364,032

14-Dec-2012

02:34

x86

Psxdrv.sys

6.0.6002.23002

9,216

14-Dec-2012

01:12

x86

Psxoffset

6.0.6002.23002

15,872

14-Dec-2012

01:12

Not Applicable

Psxrun.exe

6.0.6002.23002

40,960

14-Dec-2012

01:13

x86

Psxss.exe

6.0.6002.23002

654,848

14-Dec-2012

01:14

x86

Sua-ppdlic.xrm-ms

Not Applicable

2,981

14-Dec-2012

02:21

Not Applicable

Suagc.exe

6.0.6002.23002

7,680

14-Dec-2012

01:12

x86

Suares.dll

6.0.6002.23002

2,048

14-Dec-2012

01:12

x86

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

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

Loginenv

6.0.6002.23002

12,288

14-Dec-2012

01:45

Not Applicable

Makedev

6.0.6002.23002

41,984

14-Dec-2012

01:45

Not Applicable

Posix.exe

6.0.6002.23002

89,088

14-Dec-2012

01:45

x64

Psxdll.dll

6.0.6002.23002

333,824

14-Dec-2012

03:32

x64

Psxdllsvr.dll

6.0.6002.23002

382,464

14-Dec-2012

03:32

x64

Psxdrv.sys

6.0.6002.23002

10,240

14-Dec-2012

01:45

x64

Psxoffset

6.0.6002.23002

15,360

14-Dec-2012

01:45

Not Applicable

Psxrun.exe

6.0.6002.23002

44,544

14-Dec-2012

01:45

x64

Psxss.exe

6.0.6002.23002

847,360

14-Dec-2012

01:46

x64

Suacore-ppdlic.xrm-ms

Not Applicable

2,993

14-Dec-2012

03:08

Not Applicable

Suares.dll

6.0.6002.23002

2,048

14-Dec-2012

01:45

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

Loginenv

6.0.6002.23002

12,288

14-Dec-2012

01:45

Not Applicable

Makedev

6.0.6002.23002

41,984

14-Dec-2012

01:45

Not Applicable

Posix.exe

6.0.6002.23002

89,088

14-Dec-2012

01:45

x64

Psxdll.dll

6.0.6002.23002

333,824

14-Dec-2012

03:32

x64

Psxdllsvr.dll

6.0.6002.23002

382,464

14-Dec-2012

03:32

x64

Psxdrv.sys

6.0.6002.23002

10,240

14-Dec-2012

01:45

x64

Psxoffset

6.0.6002.23002

15,360

14-Dec-2012

01:45

Not Applicable

Psxrun.exe

6.0.6002.23002

44,544

14-Dec-2012

01:45

x64

Psxss.exe

6.0.6002.23002

847,360

14-Dec-2012

01:46

x64

Sua-ppdlic.xrm-ms

Not Applicable

2,981

14-Dec-2012

03:08

Not Applicable

Suagc.exe

6.0.6002.23002

8,704

14-Dec-2012

01:45

x64

Suares.dll

6.0.6002.23002

2,048

14-Dec-2012

01:45

x64

Posixsscom.dll

6.0.6002.23002

5,632

14-Dec-2012

02:34

x86

Psxdll.dll

6.0.6002.23002

333,824

14-Dec-2012

02:34

x86

Psxdllsvr.dll

6.0.6002.23002

382,976

14-Dec-2012

02:34

x86

Posixsscom.dll

6.0.6002.23002

5,632

14-Dec-2012

02:34

x86

Psxdll.dll

6.0.6002.23002

333,824

14-Dec-2012

02:34

x86

Psxdllsvr.dll

6.0.6002.23002

382,976

14-Dec-2012

02:34

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

Loginenv

6.0.6002.23002

25,600

14-Dec-2012

00:51

Not Applicable

Makedev

6.0.6002.23002

49,152

14-Dec-2012

00:51

Not Applicable

Posix.exe

6.0.6002.23002

181,248

14-Dec-2012

00:51

IA-64

Psxdll.dll

6.0.6002.23002

736,768

14-Dec-2012

02:13

IA-64

Psxdllsvr.dll

6.0.6002.23002

762,368

14-Dec-2012

02:13

IA-64

Psxdrv.sys

6.0.6002.23002

20,480

14-Dec-2012

00:51

IA-64

Psxoffset

6.0.6002.23002

34,816

14-Dec-2012

00:51

Not Applicable

Psxrun.exe

6.0.6002.23002

75,776

14-Dec-2012

00:51

IA-64

Psxss.exe

6.0.6002.23002

1,645,568

14-Dec-2012

00:52

IA-64

Sua-ppdlic.xrm-ms

Not Applicable

2,981

14-Dec-2012

02:03

Not Applicable

Suagc.exe

6.0.6002.23002

16,384

14-Dec-2012

00:51

IA-64

Suares.dll

6.0.6002.23002

2,048

14-Dec-2012

00:51

IA-64

Posixsscom.dll

6.0.6002.23002

5,632

14-Dec-2012

02:34

x86

Psxdll.dll

6.0.6002.23002

333,824

14-Dec-2012

02:34

x86

Psxdllsvr.dll

6.0.6002.23002

382,976

14-Dec-2012

02:34

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 for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008

File name

Update.mum

File version

Not Applicable

File size

2,996

Date (UTC)

14-Dec-2012

Time (UTC)

04:31

Platform

Not Applicable

File name

X86_083f89f6e8f173e432edca057337f883_31bf3856ad364e35_6.0.6002.23002_none_2d435f1104717893.manifest

File version

Not Applicable

File size

712

Date (UTC)

14-Dec-2012

Time (UTC)

04:31

Platform

Not Applicable

File name

X86_767766f7c4125088614fb60e06fe62ee_31bf3856ad364e35_6.0.6002.23002_none_c3ccef84e9d29014.manifest

File version

Not Applicable

File size

707

Date (UTC)

14-Dec-2012

Time (UTC)

04:31

Platform

Not Applicable

File name

X86_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.23002_none_f6cf761eb6ae1b02.manifest

File version

Not Applicable

File size

67,914

Date (UTC)

14-Dec-2012

Time (UTC)

02:45

Platform

Not Applicable

File name

X86_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.23002_none_765a54110631d764.manifest

File version

Not Applicable

File size

72,810

Date (UTC)

14-Dec-2012

Time (UTC)

02:45

Platform

Not Applicable

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

File name

Amd64_84112a3e2692434a8144ad151d6f8675_31bf3856ad364e35_6.0.6002.23002_none_4b06d3c01994458f.manifest

File version

Not Applicable

File size

1,074

Date (UTC)

14-Dec-2012

Time (UTC)

04:32

Platform

Not Applicable

File name

Amd64_bc0a383a2363988dcb51fb1b4d42b4f7_31bf3856ad364e35_6.0.6002.23002_none_aa64005079b08ba1.manifest

File version

Not Applicable

File size

1,064

Date (UTC)

14-Dec-2012

Time (UTC)

04:32

Platform

Not Applicable

File name

Amd64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.23002_none_52ee11a26f0b8c38.manifest

File version

Not Applicable

File size

67,414

Date (UTC)

14-Dec-2012

Time (UTC)

03:44

Platform

Not Applicable

File name

Amd64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.23002_none_d278ef94be8f489a.manifest

File version

Not Applicable

File size

73,989

Date (UTC)

14-Dec-2012

Time (UTC)

03:44

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

3,020

Date (UTC)

14-Dec-2012

Time (UTC)

04:32

Platform

Not Applicable

File name

Wow64_subsystem-for-unix-..d-applications-core_31bf3856ad364e35_6.0.6002.23002_none_5d42bbf4a36c4e33.manifest

File version

Not Applicable

File size

42,587

Date (UTC)

14-Dec-2012

Time (UTC)

02:38

Platform

Not Applicable

File name

Wow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.23002_none_dccd99e6f2f00a95.manifest

File version

Not Applicable

File size

42,068

Date (UTC)

14-Dec-2012

Time (UTC)

02:39

Platform

Not Applicable

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

File name

Ia64_34a036ee50ad71a1f2fc2e3aa65aaf08_31bf3856ad364e35_6.0.6002.23002_none_05c664d9a6bed775.manifest

File version

Not Applicable

File size

1,062

Date (UTC)

14-Dec-2012

Time (UTC)

04:31

Platform

Not Applicable

File name

Ia64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.23002_none_765bf807062fe060.manifest

File version

Not Applicable

File size

73,967

Date (UTC)

14-Dec-2012

Time (UTC)

02:21

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

1,565

Date (UTC)

14-Dec-2012

Time (UTC)

04:31

Platform

Not Applicable

File name

Wow64_subsystem-for-unix-based-applications_31bf3856ad364e35_6.0.6002.23002_none_dccd99e6f2f00a95.manifest

File version

Not Applicable

File size

42,068

Date (UTC)

14-Dec-2012

Time (UTC)

02:39

Platform

Not Applicable


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